[331] | 1 | /*
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| 2 | * Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <openssl/opensslconf.h>
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| 11 | #include <openssl/crypto.h>
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| 12 | #include <openssl/evp.h>
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| 13 | #include <openssl/err.h>
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| 14 | #include <string.h>
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| 15 | #include <assert.h>
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| 16 | #include <openssl/aes.h>
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| 17 | #include "internal/evp_int.h"
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| 18 | #include "../modes/modes_lcl.h"
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| 19 | #include <openssl/rand.h>
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| 20 | #include "evp_locl.h"
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| 21 | #include <stdint.h>
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| 22 | typedef unsigned short uint16_t;
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| 23 |
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| 24 | typedef struct {
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| 25 | union {
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| 26 | double align;
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| 27 | AES_KEY ks;
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| 28 | } ks;
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| 29 | block128_f block;
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| 30 | union {
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| 31 | cbc128_f cbc;
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| 32 | ctr128_f ctr;
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| 33 | } stream;
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| 34 | } EVP_AES_KEY;
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| 35 |
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| 36 | typedef struct {
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| 37 | union {
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| 38 | double align;
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| 39 | AES_KEY ks;
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| 40 | } ks; /* AES key schedule to use */
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| 41 | int key_set; /* Set if key initialised */
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| 42 | int iv_set; /* Set if an iv is set */
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| 43 | GCM128_CONTEXT gcm;
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| 44 | unsigned char *iv; /* Temporary IV store */
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| 45 | int ivlen; /* IV length */
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| 46 | int taglen;
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| 47 | int iv_gen; /* It is OK to generate IVs */
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| 48 | int tls_aad_len; /* TLS AAD length */
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| 49 | ctr128_f ctr;
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| 50 | } EVP_AES_GCM_CTX;
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| 51 |
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| 52 | typedef struct {
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| 53 | union {
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| 54 | double align;
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| 55 | AES_KEY ks;
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| 56 | } ks1, ks2; /* AES key schedules to use */
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| 57 | XTS128_CONTEXT xts;
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| 58 | void (*stream) (const unsigned char *in,
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| 59 | unsigned char *out, size_t length,
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| 60 | const AES_KEY *key1, const AES_KEY *key2,
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| 61 | const unsigned char iv[16]);
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| 62 | } EVP_AES_XTS_CTX;
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| 63 |
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| 64 | typedef struct {
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| 65 | union {
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| 66 | double align;
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| 67 | AES_KEY ks;
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| 68 | } ks; /* AES key schedule to use */
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| 69 | int key_set; /* Set if key initialised */
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| 70 | int iv_set; /* Set if an iv is set */
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| 71 | int tag_set; /* Set if tag is valid */
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| 72 | int len_set; /* Set if message length set */
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| 73 | int L, M; /* L and M parameters from RFC3610 */
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| 74 | int tls_aad_len; /* TLS AAD length */
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| 75 | CCM128_CONTEXT ccm;
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| 76 | ccm128_f str;
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| 77 | } EVP_AES_CCM_CTX;
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| 78 |
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| 79 | #ifndef OPENSSL_NO_OCB
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| 80 | typedef struct {
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| 81 | union {
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| 82 | double align;
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| 83 | AES_KEY ks;
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| 84 | } ksenc; /* AES key schedule to use for encryption */
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| 85 | union {
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| 86 | double align;
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| 87 | AES_KEY ks;
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| 88 | } ksdec; /* AES key schedule to use for decryption */
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| 89 | int key_set; /* Set if key initialised */
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| 90 | int iv_set; /* Set if an iv is set */
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| 91 | OCB128_CONTEXT ocb;
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| 92 | unsigned char *iv; /* Temporary IV store */
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| 93 | unsigned char tag[16];
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| 94 | unsigned char data_buf[16]; /* Store partial data blocks */
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| 95 | unsigned char aad_buf[16]; /* Store partial AAD blocks */
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| 96 | int data_buf_len;
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| 97 | int aad_buf_len;
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| 98 | int ivlen; /* IV length */
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| 99 | int taglen;
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| 100 | } EVP_AES_OCB_CTX;
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| 101 | #endif
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| 102 |
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| 103 | #define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4))
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| 104 |
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| 105 | #ifdef VPAES_ASM
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| 106 | int vpaes_set_encrypt_key(const unsigned char *userKey, int bits,
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| 107 | AES_KEY *key);
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| 108 | int vpaes_set_decrypt_key(const unsigned char *userKey, int bits,
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| 109 | AES_KEY *key);
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| 110 |
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| 111 | void vpaes_encrypt(const unsigned char *in, unsigned char *out,
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| 112 | const AES_KEY *key);
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| 113 | void vpaes_decrypt(const unsigned char *in, unsigned char *out,
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| 114 | const AES_KEY *key);
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| 115 |
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| 116 | void vpaes_cbc_encrypt(const unsigned char *in,
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| 117 | unsigned char *out,
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| 118 | size_t length,
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| 119 | const AES_KEY *key, unsigned char *ivec, int enc);
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| 120 | #endif
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| 121 | #ifdef BSAES_ASM
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| 122 | void bsaes_cbc_encrypt(const unsigned char *in, unsigned char *out,
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| 123 | size_t length, const AES_KEY *key,
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| 124 | unsigned char ivec[16], int enc);
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| 125 | void bsaes_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
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| 126 | size_t len, const AES_KEY *key,
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| 127 | const unsigned char ivec[16]);
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| 128 | void bsaes_xts_encrypt(const unsigned char *inp, unsigned char *out,
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| 129 | size_t len, const AES_KEY *key1,
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| 130 | const AES_KEY *key2, const unsigned char iv[16]);
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| 131 | void bsaes_xts_decrypt(const unsigned char *inp, unsigned char *out,
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| 132 | size_t len, const AES_KEY *key1,
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| 133 | const AES_KEY *key2, const unsigned char iv[16]);
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| 134 | #endif
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| 135 | #ifdef AES_CTR_ASM
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| 136 | void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
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| 137 | size_t blocks, const AES_KEY *key,
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| 138 | const unsigned char ivec[AES_BLOCK_SIZE]);
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| 139 | #endif
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| 140 | #ifdef AES_XTS_ASM
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| 141 | void AES_xts_encrypt(const char *inp, char *out, size_t len,
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| 142 | const AES_KEY *key1, const AES_KEY *key2,
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| 143 | const unsigned char iv[16]);
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| 144 | void AES_xts_decrypt(const char *inp, char *out, size_t len,
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| 145 | const AES_KEY *key1, const AES_KEY *key2,
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| 146 | const unsigned char iv[16]);
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| 147 | #endif
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| 148 |
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| 149 | #if defined(OPENSSL_CPUID_OBJ) && (defined(__powerpc__) || defined(__ppc__) || defined(_ARCH_PPC))
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| 150 | # include "ppc_arch.h"
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| 151 | # ifdef VPAES_ASM
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| 152 | # define VPAES_CAPABLE (OPENSSL_ppccap_P & PPC_ALTIVEC)
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| 153 | # endif
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| 154 | # define HWAES_CAPABLE (OPENSSL_ppccap_P & PPC_CRYPTO207)
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| 155 | # define HWAES_set_encrypt_key aes_p8_set_encrypt_key
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| 156 | # define HWAES_set_decrypt_key aes_p8_set_decrypt_key
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| 157 | # define HWAES_encrypt aes_p8_encrypt
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| 158 | # define HWAES_decrypt aes_p8_decrypt
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| 159 | # define HWAES_cbc_encrypt aes_p8_cbc_encrypt
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| 160 | # define HWAES_ctr32_encrypt_blocks aes_p8_ctr32_encrypt_blocks
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| 161 | # define HWAES_xts_encrypt aes_p8_xts_encrypt
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| 162 | # define HWAES_xts_decrypt aes_p8_xts_decrypt
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| 163 | #endif
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| 164 |
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| 165 | #if defined(AES_ASM) && !defined(I386_ONLY) && ( \
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| 166 | ((defined(__i386) || defined(__i386__) || \
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| 167 | defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
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| 168 | defined(__x86_64) || defined(__x86_64__) || \
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| 169 | defined(_M_AMD64) || defined(_M_X64) )
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| 170 |
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| 171 | extern unsigned int OPENSSL_ia32cap_P[];
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| 172 |
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| 173 | # ifdef VPAES_ASM
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| 174 | # define VPAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
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| 175 | # endif
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| 176 | # ifdef BSAES_ASM
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| 177 | # define BSAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
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| 178 | # endif
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| 179 | /*
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| 180 | * AES-NI section
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| 181 | */
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| 182 | # define AESNI_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(57-32)))
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| 183 |
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| 184 | int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
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| 185 | AES_KEY *key);
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| 186 | int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
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| 187 | AES_KEY *key);
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| 188 |
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| 189 | void aesni_encrypt(const unsigned char *in, unsigned char *out,
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| 190 | const AES_KEY *key);
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| 191 | void aesni_decrypt(const unsigned char *in, unsigned char *out,
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| 192 | const AES_KEY *key);
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| 193 |
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| 194 | void aesni_ecb_encrypt(const unsigned char *in,
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| 195 | unsigned char *out,
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| 196 | size_t length, const AES_KEY *key, int enc);
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| 197 | void aesni_cbc_encrypt(const unsigned char *in,
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| 198 | unsigned char *out,
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| 199 | size_t length,
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| 200 | const AES_KEY *key, unsigned char *ivec, int enc);
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| 201 |
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| 202 | void aesni_ctr32_encrypt_blocks(const unsigned char *in,
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| 203 | unsigned char *out,
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| 204 | size_t blocks,
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| 205 | const void *key, const unsigned char *ivec);
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| 206 |
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| 207 | void aesni_xts_encrypt(const unsigned char *in,
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| 208 | unsigned char *out,
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| 209 | size_t length,
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| 210 | const AES_KEY *key1, const AES_KEY *key2,
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| 211 | const unsigned char iv[16]);
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| 212 |
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| 213 | void aesni_xts_decrypt(const unsigned char *in,
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| 214 | unsigned char *out,
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| 215 | size_t length,
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| 216 | const AES_KEY *key1, const AES_KEY *key2,
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| 217 | const unsigned char iv[16]);
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| 218 |
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| 219 | void aesni_ccm64_encrypt_blocks(const unsigned char *in,
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| 220 | unsigned char *out,
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| 221 | size_t blocks,
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| 222 | const void *key,
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| 223 | const unsigned char ivec[16],
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| 224 | unsigned char cmac[16]);
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| 225 |
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| 226 | void aesni_ccm64_decrypt_blocks(const unsigned char *in,
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| 227 | unsigned char *out,
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| 228 | size_t blocks,
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| 229 | const void *key,
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| 230 | const unsigned char ivec[16],
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| 231 | unsigned char cmac[16]);
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| 232 |
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| 233 | # if defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64)
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| 234 | size_t aesni_gcm_encrypt(const unsigned char *in,
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| 235 | unsigned char *out,
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| 236 | size_t len,
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| 237 | const void *key, unsigned char ivec[16], u64 *Xi);
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| 238 | # define AES_gcm_encrypt aesni_gcm_encrypt
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| 239 | size_t aesni_gcm_decrypt(const unsigned char *in,
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| 240 | unsigned char *out,
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| 241 | size_t len,
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| 242 | const void *key, unsigned char ivec[16], u64 *Xi);
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| 243 | # define AES_gcm_decrypt aesni_gcm_decrypt
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| 244 | void gcm_ghash_avx(u64 Xi[2], const u128 Htable[16], const u8 *in,
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| 245 | size_t len);
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| 246 | # define AES_GCM_ASM(gctx) (gctx->ctr==aesni_ctr32_encrypt_blocks && \
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| 247 | gctx->gcm.ghash==gcm_ghash_avx)
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| 248 | # define AES_GCM_ASM2(gctx) (gctx->gcm.block==(block128_f)aesni_encrypt && \
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| 249 | gctx->gcm.ghash==gcm_ghash_avx)
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| 250 | # undef AES_GCM_ASM2 /* minor size optimization */
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| 251 | # endif
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| 252 |
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| 253 | static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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| 254 | const unsigned char *iv, int enc)
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| 255 | {
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| 256 | int ret, mode;
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| 257 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
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| 258 |
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| 259 | mode = EVP_CIPHER_CTX_mode(ctx);
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| 260 | if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
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| 261 | && !enc) {
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| 262 | ret = aesni_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
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| 263 | &dat->ks.ks);
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| 264 | dat->block = (block128_f) aesni_decrypt;
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| 265 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
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| 266 | (cbc128_f) aesni_cbc_encrypt : NULL;
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| 267 | } else {
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| 268 | ret = aesni_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
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| 269 | &dat->ks.ks);
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| 270 | dat->block = (block128_f) aesni_encrypt;
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| 271 | if (mode == EVP_CIPH_CBC_MODE)
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| 272 | dat->stream.cbc = (cbc128_f) aesni_cbc_encrypt;
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| 273 | else if (mode == EVP_CIPH_CTR_MODE)
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| 274 | dat->stream.ctr = (ctr128_f) aesni_ctr32_encrypt_blocks;
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| 275 | else
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| 276 | dat->stream.cbc = NULL;
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| 277 | }
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| 278 |
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| 279 | if (ret < 0) {
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| 280 | EVPerr(EVP_F_AESNI_INIT_KEY, EVP_R_AES_KEY_SETUP_FAILED);
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| 281 | return 0;
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| 282 | }
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| 283 |
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| 284 | return 1;
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| 285 | }
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| 286 |
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| 287 | static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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| 288 | const unsigned char *in, size_t len)
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| 289 | {
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| 290 | aesni_cbc_encrypt(in, out, len, &EVP_C_DATA(EVP_AES_KEY,ctx)->ks.ks,
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| 291 | EVP_CIPHER_CTX_iv_noconst(ctx),
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| 292 | EVP_CIPHER_CTX_encrypting(ctx));
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| 293 |
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| 294 | return 1;
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| 295 | }
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| 296 |
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| 297 | static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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| 298 | const unsigned char *in, size_t len)
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| 299 | {
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| 300 | size_t bl = EVP_CIPHER_CTX_block_size(ctx);
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| 301 |
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| 302 | if (len < bl)
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| 303 | return 1;
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| 304 |
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| 305 | aesni_ecb_encrypt(in, out, len, &EVP_C_DATA(EVP_AES_KEY,ctx)->ks.ks,
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| 306 | EVP_CIPHER_CTX_encrypting(ctx));
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| 307 |
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| 308 | return 1;
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| 309 | }
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| 310 |
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| 311 | # define aesni_ofb_cipher aes_ofb_cipher
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| 312 | static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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| 313 | const unsigned char *in, size_t len);
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| 314 |
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| 315 | # define aesni_cfb_cipher aes_cfb_cipher
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| 316 | static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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| 317 | const unsigned char *in, size_t len);
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| 318 |
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| 319 | # define aesni_cfb8_cipher aes_cfb8_cipher
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| 320 | static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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| 321 | const unsigned char *in, size_t len);
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| 322 |
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| 323 | # define aesni_cfb1_cipher aes_cfb1_cipher
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| 324 | static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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| 325 | const unsigned char *in, size_t len);
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| 326 |
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| 327 | # define aesni_ctr_cipher aes_ctr_cipher
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| 328 | static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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| 329 | const unsigned char *in, size_t len);
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| 330 |
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| 331 | static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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| 332 | const unsigned char *iv, int enc)
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| 333 | {
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| 334 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx);
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| 335 | if (!iv && !key)
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| 336 | return 1;
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| 337 | if (key) {
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| 338 | aesni_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
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| 339 | &gctx->ks.ks);
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| 340 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f) aesni_encrypt);
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| 341 | gctx->ctr = (ctr128_f) aesni_ctr32_encrypt_blocks;
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| 342 | /*
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| 343 | * If we have an iv can set it directly, otherwise use saved IV.
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| 344 | */
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| 345 | if (iv == NULL && gctx->iv_set)
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| 346 | iv = gctx->iv;
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| 347 | if (iv) {
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| 348 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
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| 349 | gctx->iv_set = 1;
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| 350 | }
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| 351 | gctx->key_set = 1;
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| 352 | } else {
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| 353 | /* If key set use IV, otherwise copy */
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| 354 | if (gctx->key_set)
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| 355 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
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| 356 | else
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| 357 | memcpy(gctx->iv, iv, gctx->ivlen);
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| 358 | gctx->iv_set = 1;
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| 359 | gctx->iv_gen = 0;
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| 360 | }
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| 361 | return 1;
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| 362 | }
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| 363 |
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| 364 | # define aesni_gcm_cipher aes_gcm_cipher
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| 365 | static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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| 366 | const unsigned char *in, size_t len);
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| 367 |
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| 368 | static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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| 369 | const unsigned char *iv, int enc)
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| 370 | {
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| 371 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx);
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| 372 | if (!iv && !key)
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| 373 | return 1;
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| 374 |
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| 375 | if (key) {
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| 376 | /* key_len is two AES keys */
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| 377 | if (enc) {
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| 378 | aesni_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 4,
|
---|
| 379 | &xctx->ks1.ks);
|
---|
| 380 | xctx->xts.block1 = (block128_f) aesni_encrypt;
|
---|
| 381 | xctx->stream = aesni_xts_encrypt;
|
---|
| 382 | } else {
|
---|
| 383 | aesni_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 4,
|
---|
| 384 | &xctx->ks1.ks);
|
---|
| 385 | xctx->xts.block1 = (block128_f) aesni_decrypt;
|
---|
| 386 | xctx->stream = aesni_xts_decrypt;
|
---|
| 387 | }
|
---|
| 388 |
|
---|
| 389 | aesni_set_encrypt_key(key + EVP_CIPHER_CTX_key_length(ctx) / 2,
|
---|
| 390 | EVP_CIPHER_CTX_key_length(ctx) * 4,
|
---|
| 391 | &xctx->ks2.ks);
|
---|
| 392 | xctx->xts.block2 = (block128_f) aesni_encrypt;
|
---|
| 393 |
|
---|
| 394 | xctx->xts.key1 = &xctx->ks1;
|
---|
| 395 | }
|
---|
| 396 |
|
---|
| 397 | if (iv) {
|
---|
| 398 | xctx->xts.key2 = &xctx->ks2;
|
---|
| 399 | memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 16);
|
---|
| 400 | }
|
---|
| 401 |
|
---|
| 402 | return 1;
|
---|
| 403 | }
|
---|
| 404 |
|
---|
| 405 | # define aesni_xts_cipher aes_xts_cipher
|
---|
| 406 | static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 407 | const unsigned char *in, size_t len);
|
---|
| 408 |
|
---|
| 409 | static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
---|
| 410 | const unsigned char *iv, int enc)
|
---|
| 411 | {
|
---|
| 412 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx);
|
---|
| 413 | if (!iv && !key)
|
---|
| 414 | return 1;
|
---|
| 415 | if (key) {
|
---|
| 416 | aesni_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 417 | &cctx->ks.ks);
|
---|
| 418 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
|
---|
| 419 | &cctx->ks, (block128_f) aesni_encrypt);
|
---|
| 420 | cctx->str = enc ? (ccm128_f) aesni_ccm64_encrypt_blocks :
|
---|
| 421 | (ccm128_f) aesni_ccm64_decrypt_blocks;
|
---|
| 422 | cctx->key_set = 1;
|
---|
| 423 | }
|
---|
| 424 | if (iv) {
|
---|
| 425 | memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 15 - cctx->L);
|
---|
| 426 | cctx->iv_set = 1;
|
---|
| 427 | }
|
---|
| 428 | return 1;
|
---|
| 429 | }
|
---|
| 430 |
|
---|
| 431 | # define aesni_ccm_cipher aes_ccm_cipher
|
---|
| 432 | static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 433 | const unsigned char *in, size_t len);
|
---|
| 434 |
|
---|
| 435 | # ifndef OPENSSL_NO_OCB
|
---|
| 436 | void aesni_ocb_encrypt(const unsigned char *in, unsigned char *out,
|
---|
| 437 | size_t blocks, const void *key,
|
---|
| 438 | size_t start_block_num,
|
---|
| 439 | unsigned char offset_i[16],
|
---|
| 440 | const unsigned char L_[][16],
|
---|
| 441 | unsigned char checksum[16]);
|
---|
| 442 | void aesni_ocb_decrypt(const unsigned char *in, unsigned char *out,
|
---|
| 443 | size_t blocks, const void *key,
|
---|
| 444 | size_t start_block_num,
|
---|
| 445 | unsigned char offset_i[16],
|
---|
| 446 | const unsigned char L_[][16],
|
---|
| 447 | unsigned char checksum[16]);
|
---|
| 448 |
|
---|
| 449 | static int aesni_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
---|
| 450 | const unsigned char *iv, int enc)
|
---|
| 451 | {
|
---|
| 452 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx);
|
---|
| 453 | if (!iv && !key)
|
---|
| 454 | return 1;
|
---|
| 455 | if (key) {
|
---|
| 456 | do {
|
---|
| 457 | /*
|
---|
| 458 | * We set both the encrypt and decrypt key here because decrypt
|
---|
| 459 | * needs both. We could possibly optimise to remove setting the
|
---|
| 460 | * decrypt for an encryption operation.
|
---|
| 461 | */
|
---|
| 462 | aesni_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 463 | &octx->ksenc.ks);
|
---|
| 464 | aesni_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 465 | &octx->ksdec.ks);
|
---|
| 466 | if (!CRYPTO_ocb128_init(&octx->ocb,
|
---|
| 467 | &octx->ksenc.ks, &octx->ksdec.ks,
|
---|
| 468 | (block128_f) aesni_encrypt,
|
---|
| 469 | (block128_f) aesni_decrypt,
|
---|
| 470 | enc ? aesni_ocb_encrypt
|
---|
| 471 | : aesni_ocb_decrypt))
|
---|
| 472 | return 0;
|
---|
| 473 | }
|
---|
| 474 | while (0);
|
---|
| 475 |
|
---|
| 476 | /*
|
---|
| 477 | * If we have an iv we can set it directly, otherwise use saved IV.
|
---|
| 478 | */
|
---|
| 479 | if (iv == NULL && octx->iv_set)
|
---|
| 480 | iv = octx->iv;
|
---|
| 481 | if (iv) {
|
---|
| 482 | if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen)
|
---|
| 483 | != 1)
|
---|
| 484 | return 0;
|
---|
| 485 | octx->iv_set = 1;
|
---|
| 486 | }
|
---|
| 487 | octx->key_set = 1;
|
---|
| 488 | } else {
|
---|
| 489 | /* If key set use IV, otherwise copy */
|
---|
| 490 | if (octx->key_set)
|
---|
| 491 | CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen);
|
---|
| 492 | else
|
---|
| 493 | memcpy(octx->iv, iv, octx->ivlen);
|
---|
| 494 | octx->iv_set = 1;
|
---|
| 495 | }
|
---|
| 496 | return 1;
|
---|
| 497 | }
|
---|
| 498 |
|
---|
| 499 | # define aesni_ocb_cipher aes_ocb_cipher
|
---|
| 500 | static int aesni_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 501 | const unsigned char *in, size_t len);
|
---|
| 502 | # endif /* OPENSSL_NO_OCB */
|
---|
| 503 |
|
---|
| 504 | # define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
|
---|
| 505 | static const EVP_CIPHER aesni_##keylen##_##mode = { \
|
---|
| 506 | nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
|
---|
| 507 | flags|EVP_CIPH_##MODE##_MODE, \
|
---|
| 508 | aesni_init_key, \
|
---|
| 509 | aesni_##mode##_cipher, \
|
---|
| 510 | NULL, \
|
---|
| 511 | sizeof(EVP_AES_KEY), \
|
---|
| 512 | NULL,NULL,NULL,NULL }; \
|
---|
| 513 | static const EVP_CIPHER aes_##keylen##_##mode = { \
|
---|
| 514 | nid##_##keylen##_##nmode,blocksize, \
|
---|
| 515 | keylen/8,ivlen, \
|
---|
| 516 | flags|EVP_CIPH_##MODE##_MODE, \
|
---|
| 517 | aes_init_key, \
|
---|
| 518 | aes_##mode##_cipher, \
|
---|
| 519 | NULL, \
|
---|
| 520 | sizeof(EVP_AES_KEY), \
|
---|
| 521 | NULL,NULL,NULL,NULL }; \
|
---|
| 522 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
|
---|
| 523 | { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
|
---|
| 524 |
|
---|
| 525 | # define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
|
---|
| 526 | static const EVP_CIPHER aesni_##keylen##_##mode = { \
|
---|
| 527 | nid##_##keylen##_##mode,blocksize, \
|
---|
| 528 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
|
---|
| 529 | flags|EVP_CIPH_##MODE##_MODE, \
|
---|
| 530 | aesni_##mode##_init_key, \
|
---|
| 531 | aesni_##mode##_cipher, \
|
---|
| 532 | aes_##mode##_cleanup, \
|
---|
| 533 | sizeof(EVP_AES_##MODE##_CTX), \
|
---|
| 534 | NULL,NULL,aes_##mode##_ctrl,NULL }; \
|
---|
| 535 | static const EVP_CIPHER aes_##keylen##_##mode = { \
|
---|
| 536 | nid##_##keylen##_##mode,blocksize, \
|
---|
| 537 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
|
---|
| 538 | flags|EVP_CIPH_##MODE##_MODE, \
|
---|
| 539 | aes_##mode##_init_key, \
|
---|
| 540 | aes_##mode##_cipher, \
|
---|
| 541 | aes_##mode##_cleanup, \
|
---|
| 542 | sizeof(EVP_AES_##MODE##_CTX), \
|
---|
| 543 | NULL,NULL,aes_##mode##_ctrl,NULL }; \
|
---|
| 544 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
|
---|
| 545 | { return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
|
---|
| 546 |
|
---|
| 547 | #elif defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
|
---|
| 548 |
|
---|
| 549 | # include "sparc_arch.h"
|
---|
| 550 |
|
---|
| 551 | extern unsigned int OPENSSL_sparcv9cap_P[];
|
---|
| 552 |
|
---|
| 553 | /*
|
---|
| 554 | * Initial Fujitsu SPARC64 X support
|
---|
| 555 | */
|
---|
| 556 | # define HWAES_CAPABLE (OPENSSL_sparcv9cap_P[0] & SPARCV9_FJAESX)
|
---|
| 557 | # define HWAES_set_encrypt_key aes_fx_set_encrypt_key
|
---|
| 558 | # define HWAES_set_decrypt_key aes_fx_set_decrypt_key
|
---|
| 559 | # define HWAES_encrypt aes_fx_encrypt
|
---|
| 560 | # define HWAES_decrypt aes_fx_decrypt
|
---|
| 561 | # define HWAES_cbc_encrypt aes_fx_cbc_encrypt
|
---|
| 562 | # define HWAES_ctr32_encrypt_blocks aes_fx_ctr32_encrypt_blocks
|
---|
| 563 |
|
---|
| 564 | # define SPARC_AES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_AES)
|
---|
| 565 |
|
---|
| 566 | void aes_t4_set_encrypt_key(const unsigned char *key, int bits, AES_KEY *ks);
|
---|
| 567 | void aes_t4_set_decrypt_key(const unsigned char *key, int bits, AES_KEY *ks);
|
---|
| 568 | void aes_t4_encrypt(const unsigned char *in, unsigned char *out,
|
---|
| 569 | const AES_KEY *key);
|
---|
| 570 | void aes_t4_decrypt(const unsigned char *in, unsigned char *out,
|
---|
| 571 | const AES_KEY *key);
|
---|
| 572 | /*
|
---|
| 573 | * Key-length specific subroutines were chosen for following reason.
|
---|
| 574 | * Each SPARC T4 core can execute up to 8 threads which share core's
|
---|
| 575 | * resources. Loading as much key material to registers allows to
|
---|
| 576 | * minimize references to shared memory interface, as well as amount
|
---|
| 577 | * of instructions in inner loops [much needed on T4]. But then having
|
---|
| 578 | * non-key-length specific routines would require conditional branches
|
---|
| 579 | * either in inner loops or on subroutines' entries. Former is hardly
|
---|
| 580 | * acceptable, while latter means code size increase to size occupied
|
---|
| 581 | * by multiple key-length specific subroutines, so why fight?
|
---|
| 582 | */
|
---|
| 583 | void aes128_t4_cbc_encrypt(const unsigned char *in, unsigned char *out,
|
---|
| 584 | size_t len, const AES_KEY *key,
|
---|
| 585 | unsigned char *ivec);
|
---|
| 586 | void aes128_t4_cbc_decrypt(const unsigned char *in, unsigned char *out,
|
---|
| 587 | size_t len, const AES_KEY *key,
|
---|
| 588 | unsigned char *ivec);
|
---|
| 589 | void aes192_t4_cbc_encrypt(const unsigned char *in, unsigned char *out,
|
---|
| 590 | size_t len, const AES_KEY *key,
|
---|
| 591 | unsigned char *ivec);
|
---|
| 592 | void aes192_t4_cbc_decrypt(const unsigned char *in, unsigned char *out,
|
---|
| 593 | size_t len, const AES_KEY *key,
|
---|
| 594 | unsigned char *ivec);
|
---|
| 595 | void aes256_t4_cbc_encrypt(const unsigned char *in, unsigned char *out,
|
---|
| 596 | size_t len, const AES_KEY *key,
|
---|
| 597 | unsigned char *ivec);
|
---|
| 598 | void aes256_t4_cbc_decrypt(const unsigned char *in, unsigned char *out,
|
---|
| 599 | size_t len, const AES_KEY *key,
|
---|
| 600 | unsigned char *ivec);
|
---|
| 601 | void aes128_t4_ctr32_encrypt(const unsigned char *in, unsigned char *out,
|
---|
| 602 | size_t blocks, const AES_KEY *key,
|
---|
| 603 | unsigned char *ivec);
|
---|
| 604 | void aes192_t4_ctr32_encrypt(const unsigned char *in, unsigned char *out,
|
---|
| 605 | size_t blocks, const AES_KEY *key,
|
---|
| 606 | unsigned char *ivec);
|
---|
| 607 | void aes256_t4_ctr32_encrypt(const unsigned char *in, unsigned char *out,
|
---|
| 608 | size_t blocks, const AES_KEY *key,
|
---|
| 609 | unsigned char *ivec);
|
---|
| 610 | void aes128_t4_xts_encrypt(const unsigned char *in, unsigned char *out,
|
---|
| 611 | size_t blocks, const AES_KEY *key1,
|
---|
| 612 | const AES_KEY *key2, const unsigned char *ivec);
|
---|
| 613 | void aes128_t4_xts_decrypt(const unsigned char *in, unsigned char *out,
|
---|
| 614 | size_t blocks, const AES_KEY *key1,
|
---|
| 615 | const AES_KEY *key2, const unsigned char *ivec);
|
---|
| 616 | void aes256_t4_xts_encrypt(const unsigned char *in, unsigned char *out,
|
---|
| 617 | size_t blocks, const AES_KEY *key1,
|
---|
| 618 | const AES_KEY *key2, const unsigned char *ivec);
|
---|
| 619 | void aes256_t4_xts_decrypt(const unsigned char *in, unsigned char *out,
|
---|
| 620 | size_t blocks, const AES_KEY *key1,
|
---|
| 621 | const AES_KEY *key2, const unsigned char *ivec);
|
---|
| 622 |
|
---|
| 623 | static int aes_t4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
---|
| 624 | const unsigned char *iv, int enc)
|
---|
| 625 | {
|
---|
| 626 | int ret, mode, bits;
|
---|
| 627 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
|
---|
| 628 |
|
---|
| 629 | mode = EVP_CIPHER_CTX_mode(ctx);
|
---|
| 630 | bits = EVP_CIPHER_CTX_key_length(ctx) * 8;
|
---|
| 631 | if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
|
---|
| 632 | && !enc) {
|
---|
| 633 | ret = 0;
|
---|
| 634 | aes_t4_set_decrypt_key(key, bits, &dat->ks.ks);
|
---|
| 635 | dat->block = (block128_f) aes_t4_decrypt;
|
---|
| 636 | switch (bits) {
|
---|
| 637 | case 128:
|
---|
| 638 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
|
---|
| 639 | (cbc128_f) aes128_t4_cbc_decrypt : NULL;
|
---|
| 640 | break;
|
---|
| 641 | case 192:
|
---|
| 642 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
|
---|
| 643 | (cbc128_f) aes192_t4_cbc_decrypt : NULL;
|
---|
| 644 | break;
|
---|
| 645 | case 256:
|
---|
| 646 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
|
---|
| 647 | (cbc128_f) aes256_t4_cbc_decrypt : NULL;
|
---|
| 648 | break;
|
---|
| 649 | default:
|
---|
| 650 | ret = -1;
|
---|
| 651 | }
|
---|
| 652 | } else {
|
---|
| 653 | ret = 0;
|
---|
| 654 | aes_t4_set_encrypt_key(key, bits, &dat->ks.ks);
|
---|
| 655 | dat->block = (block128_f) aes_t4_encrypt;
|
---|
| 656 | switch (bits) {
|
---|
| 657 | case 128:
|
---|
| 658 | if (mode == EVP_CIPH_CBC_MODE)
|
---|
| 659 | dat->stream.cbc = (cbc128_f) aes128_t4_cbc_encrypt;
|
---|
| 660 | else if (mode == EVP_CIPH_CTR_MODE)
|
---|
| 661 | dat->stream.ctr = (ctr128_f) aes128_t4_ctr32_encrypt;
|
---|
| 662 | else
|
---|
| 663 | dat->stream.cbc = NULL;
|
---|
| 664 | break;
|
---|
| 665 | case 192:
|
---|
| 666 | if (mode == EVP_CIPH_CBC_MODE)
|
---|
| 667 | dat->stream.cbc = (cbc128_f) aes192_t4_cbc_encrypt;
|
---|
| 668 | else if (mode == EVP_CIPH_CTR_MODE)
|
---|
| 669 | dat->stream.ctr = (ctr128_f) aes192_t4_ctr32_encrypt;
|
---|
| 670 | else
|
---|
| 671 | dat->stream.cbc = NULL;
|
---|
| 672 | break;
|
---|
| 673 | case 256:
|
---|
| 674 | if (mode == EVP_CIPH_CBC_MODE)
|
---|
| 675 | dat->stream.cbc = (cbc128_f) aes256_t4_cbc_encrypt;
|
---|
| 676 | else if (mode == EVP_CIPH_CTR_MODE)
|
---|
| 677 | dat->stream.ctr = (ctr128_f) aes256_t4_ctr32_encrypt;
|
---|
| 678 | else
|
---|
| 679 | dat->stream.cbc = NULL;
|
---|
| 680 | break;
|
---|
| 681 | default:
|
---|
| 682 | ret = -1;
|
---|
| 683 | }
|
---|
| 684 | }
|
---|
| 685 |
|
---|
| 686 | if (ret < 0) {
|
---|
| 687 | EVPerr(EVP_F_AES_T4_INIT_KEY, EVP_R_AES_KEY_SETUP_FAILED);
|
---|
| 688 | return 0;
|
---|
| 689 | }
|
---|
| 690 |
|
---|
| 691 | return 1;
|
---|
| 692 | }
|
---|
| 693 |
|
---|
| 694 | # define aes_t4_cbc_cipher aes_cbc_cipher
|
---|
| 695 | static int aes_t4_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 696 | const unsigned char *in, size_t len);
|
---|
| 697 |
|
---|
| 698 | # define aes_t4_ecb_cipher aes_ecb_cipher
|
---|
| 699 | static int aes_t4_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 700 | const unsigned char *in, size_t len);
|
---|
| 701 |
|
---|
| 702 | # define aes_t4_ofb_cipher aes_ofb_cipher
|
---|
| 703 | static int aes_t4_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 704 | const unsigned char *in, size_t len);
|
---|
| 705 |
|
---|
| 706 | # define aes_t4_cfb_cipher aes_cfb_cipher
|
---|
| 707 | static int aes_t4_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 708 | const unsigned char *in, size_t len);
|
---|
| 709 |
|
---|
| 710 | # define aes_t4_cfb8_cipher aes_cfb8_cipher
|
---|
| 711 | static int aes_t4_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 712 | const unsigned char *in, size_t len);
|
---|
| 713 |
|
---|
| 714 | # define aes_t4_cfb1_cipher aes_cfb1_cipher
|
---|
| 715 | static int aes_t4_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 716 | const unsigned char *in, size_t len);
|
---|
| 717 |
|
---|
| 718 | # define aes_t4_ctr_cipher aes_ctr_cipher
|
---|
| 719 | static int aes_t4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 720 | const unsigned char *in, size_t len);
|
---|
| 721 |
|
---|
| 722 | static int aes_t4_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
---|
| 723 | const unsigned char *iv, int enc)
|
---|
| 724 | {
|
---|
| 725 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx);
|
---|
| 726 | if (!iv && !key)
|
---|
| 727 | return 1;
|
---|
| 728 | if (key) {
|
---|
| 729 | int bits = EVP_CIPHER_CTX_key_length(ctx) * 8;
|
---|
| 730 | aes_t4_set_encrypt_key(key, bits, &gctx->ks.ks);
|
---|
| 731 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
|
---|
| 732 | (block128_f) aes_t4_encrypt);
|
---|
| 733 | switch (bits) {
|
---|
| 734 | case 128:
|
---|
| 735 | gctx->ctr = (ctr128_f) aes128_t4_ctr32_encrypt;
|
---|
| 736 | break;
|
---|
| 737 | case 192:
|
---|
| 738 | gctx->ctr = (ctr128_f) aes192_t4_ctr32_encrypt;
|
---|
| 739 | break;
|
---|
| 740 | case 256:
|
---|
| 741 | gctx->ctr = (ctr128_f) aes256_t4_ctr32_encrypt;
|
---|
| 742 | break;
|
---|
| 743 | default:
|
---|
| 744 | return 0;
|
---|
| 745 | }
|
---|
| 746 | /*
|
---|
| 747 | * If we have an iv can set it directly, otherwise use saved IV.
|
---|
| 748 | */
|
---|
| 749 | if (iv == NULL && gctx->iv_set)
|
---|
| 750 | iv = gctx->iv;
|
---|
| 751 | if (iv) {
|
---|
| 752 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
|
---|
| 753 | gctx->iv_set = 1;
|
---|
| 754 | }
|
---|
| 755 | gctx->key_set = 1;
|
---|
| 756 | } else {
|
---|
| 757 | /* If key set use IV, otherwise copy */
|
---|
| 758 | if (gctx->key_set)
|
---|
| 759 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
|
---|
| 760 | else
|
---|
| 761 | memcpy(gctx->iv, iv, gctx->ivlen);
|
---|
| 762 | gctx->iv_set = 1;
|
---|
| 763 | gctx->iv_gen = 0;
|
---|
| 764 | }
|
---|
| 765 | return 1;
|
---|
| 766 | }
|
---|
| 767 |
|
---|
| 768 | # define aes_t4_gcm_cipher aes_gcm_cipher
|
---|
| 769 | static int aes_t4_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 770 | const unsigned char *in, size_t len);
|
---|
| 771 |
|
---|
| 772 | static int aes_t4_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
---|
| 773 | const unsigned char *iv, int enc)
|
---|
| 774 | {
|
---|
| 775 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx);
|
---|
| 776 | if (!iv && !key)
|
---|
| 777 | return 1;
|
---|
| 778 |
|
---|
| 779 | if (key) {
|
---|
| 780 | int bits = EVP_CIPHER_CTX_key_length(ctx) * 4;
|
---|
| 781 | xctx->stream = NULL;
|
---|
| 782 | /* key_len is two AES keys */
|
---|
| 783 | if (enc) {
|
---|
| 784 | aes_t4_set_encrypt_key(key, bits, &xctx->ks1.ks);
|
---|
| 785 | xctx->xts.block1 = (block128_f) aes_t4_encrypt;
|
---|
| 786 | switch (bits) {
|
---|
| 787 | case 128:
|
---|
| 788 | xctx->stream = aes128_t4_xts_encrypt;
|
---|
| 789 | break;
|
---|
| 790 | case 256:
|
---|
| 791 | xctx->stream = aes256_t4_xts_encrypt;
|
---|
| 792 | break;
|
---|
| 793 | default:
|
---|
| 794 | return 0;
|
---|
| 795 | }
|
---|
| 796 | } else {
|
---|
| 797 | aes_t4_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 4,
|
---|
| 798 | &xctx->ks1.ks);
|
---|
| 799 | xctx->xts.block1 = (block128_f) aes_t4_decrypt;
|
---|
| 800 | switch (bits) {
|
---|
| 801 | case 128:
|
---|
| 802 | xctx->stream = aes128_t4_xts_decrypt;
|
---|
| 803 | break;
|
---|
| 804 | case 256:
|
---|
| 805 | xctx->stream = aes256_t4_xts_decrypt;
|
---|
| 806 | break;
|
---|
| 807 | default:
|
---|
| 808 | return 0;
|
---|
| 809 | }
|
---|
| 810 | }
|
---|
| 811 |
|
---|
| 812 | aes_t4_set_encrypt_key(key + EVP_CIPHER_CTX_key_length(ctx) / 2,
|
---|
| 813 | EVP_CIPHER_CTX_key_length(ctx) * 4,
|
---|
| 814 | &xctx->ks2.ks);
|
---|
| 815 | xctx->xts.block2 = (block128_f) aes_t4_encrypt;
|
---|
| 816 |
|
---|
| 817 | xctx->xts.key1 = &xctx->ks1;
|
---|
| 818 | }
|
---|
| 819 |
|
---|
| 820 | if (iv) {
|
---|
| 821 | xctx->xts.key2 = &xctx->ks2;
|
---|
| 822 | memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 16);
|
---|
| 823 | }
|
---|
| 824 |
|
---|
| 825 | return 1;
|
---|
| 826 | }
|
---|
| 827 |
|
---|
| 828 | # define aes_t4_xts_cipher aes_xts_cipher
|
---|
| 829 | static int aes_t4_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 830 | const unsigned char *in, size_t len);
|
---|
| 831 |
|
---|
| 832 | static int aes_t4_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
---|
| 833 | const unsigned char *iv, int enc)
|
---|
| 834 | {
|
---|
| 835 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx);
|
---|
| 836 | if (!iv && !key)
|
---|
| 837 | return 1;
|
---|
| 838 | if (key) {
|
---|
| 839 | int bits = EVP_CIPHER_CTX_key_length(ctx) * 8;
|
---|
| 840 | aes_t4_set_encrypt_key(key, bits, &cctx->ks.ks);
|
---|
| 841 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
|
---|
| 842 | &cctx->ks, (block128_f) aes_t4_encrypt);
|
---|
| 843 | cctx->str = NULL;
|
---|
| 844 | cctx->key_set = 1;
|
---|
| 845 | }
|
---|
| 846 | if (iv) {
|
---|
| 847 | memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 15 - cctx->L);
|
---|
| 848 | cctx->iv_set = 1;
|
---|
| 849 | }
|
---|
| 850 | return 1;
|
---|
| 851 | }
|
---|
| 852 |
|
---|
| 853 | # define aes_t4_ccm_cipher aes_ccm_cipher
|
---|
| 854 | static int aes_t4_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 855 | const unsigned char *in, size_t len);
|
---|
| 856 |
|
---|
| 857 | # ifndef OPENSSL_NO_OCB
|
---|
| 858 | static int aes_t4_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
---|
| 859 | const unsigned char *iv, int enc)
|
---|
| 860 | {
|
---|
| 861 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx);
|
---|
| 862 | if (!iv && !key)
|
---|
| 863 | return 1;
|
---|
| 864 | if (key) {
|
---|
| 865 | do {
|
---|
| 866 | /*
|
---|
| 867 | * We set both the encrypt and decrypt key here because decrypt
|
---|
| 868 | * needs both. We could possibly optimise to remove setting the
|
---|
| 869 | * decrypt for an encryption operation.
|
---|
| 870 | */
|
---|
| 871 | aes_t4_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 872 | &octx->ksenc.ks);
|
---|
| 873 | aes_t4_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 874 | &octx->ksdec.ks);
|
---|
| 875 | if (!CRYPTO_ocb128_init(&octx->ocb,
|
---|
| 876 | &octx->ksenc.ks, &octx->ksdec.ks,
|
---|
| 877 | (block128_f) aes_t4_encrypt,
|
---|
| 878 | (block128_f) aes_t4_decrypt,
|
---|
| 879 | NULL))
|
---|
| 880 | return 0;
|
---|
| 881 | }
|
---|
| 882 | while (0);
|
---|
| 883 |
|
---|
| 884 | /*
|
---|
| 885 | * If we have an iv we can set it directly, otherwise use saved IV.
|
---|
| 886 | */
|
---|
| 887 | if (iv == NULL && octx->iv_set)
|
---|
| 888 | iv = octx->iv;
|
---|
| 889 | if (iv) {
|
---|
| 890 | if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen)
|
---|
| 891 | != 1)
|
---|
| 892 | return 0;
|
---|
| 893 | octx->iv_set = 1;
|
---|
| 894 | }
|
---|
| 895 | octx->key_set = 1;
|
---|
| 896 | } else {
|
---|
| 897 | /* If key set use IV, otherwise copy */
|
---|
| 898 | if (octx->key_set)
|
---|
| 899 | CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen);
|
---|
| 900 | else
|
---|
| 901 | memcpy(octx->iv, iv, octx->ivlen);
|
---|
| 902 | octx->iv_set = 1;
|
---|
| 903 | }
|
---|
| 904 | return 1;
|
---|
| 905 | }
|
---|
| 906 |
|
---|
| 907 | # define aes_t4_ocb_cipher aes_ocb_cipher
|
---|
| 908 | static int aes_t4_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 909 | const unsigned char *in, size_t len);
|
---|
| 910 | # endif /* OPENSSL_NO_OCB */
|
---|
| 911 |
|
---|
| 912 | # define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
|
---|
| 913 | static const EVP_CIPHER aes_t4_##keylen##_##mode = { \
|
---|
| 914 | nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
|
---|
| 915 | flags|EVP_CIPH_##MODE##_MODE, \
|
---|
| 916 | aes_t4_init_key, \
|
---|
| 917 | aes_t4_##mode##_cipher, \
|
---|
| 918 | NULL, \
|
---|
| 919 | sizeof(EVP_AES_KEY), \
|
---|
| 920 | NULL,NULL,NULL,NULL }; \
|
---|
| 921 | static const EVP_CIPHER aes_##keylen##_##mode = { \
|
---|
| 922 | nid##_##keylen##_##nmode,blocksize, \
|
---|
| 923 | keylen/8,ivlen, \
|
---|
| 924 | flags|EVP_CIPH_##MODE##_MODE, \
|
---|
| 925 | aes_init_key, \
|
---|
| 926 | aes_##mode##_cipher, \
|
---|
| 927 | NULL, \
|
---|
| 928 | sizeof(EVP_AES_KEY), \
|
---|
| 929 | NULL,NULL,NULL,NULL }; \
|
---|
| 930 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
|
---|
| 931 | { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; }
|
---|
| 932 |
|
---|
| 933 | # define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
|
---|
| 934 | static const EVP_CIPHER aes_t4_##keylen##_##mode = { \
|
---|
| 935 | nid##_##keylen##_##mode,blocksize, \
|
---|
| 936 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
|
---|
| 937 | flags|EVP_CIPH_##MODE##_MODE, \
|
---|
| 938 | aes_t4_##mode##_init_key, \
|
---|
| 939 | aes_t4_##mode##_cipher, \
|
---|
| 940 | aes_##mode##_cleanup, \
|
---|
| 941 | sizeof(EVP_AES_##MODE##_CTX), \
|
---|
| 942 | NULL,NULL,aes_##mode##_ctrl,NULL }; \
|
---|
| 943 | static const EVP_CIPHER aes_##keylen##_##mode = { \
|
---|
| 944 | nid##_##keylen##_##mode,blocksize, \
|
---|
| 945 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
|
---|
| 946 | flags|EVP_CIPH_##MODE##_MODE, \
|
---|
| 947 | aes_##mode##_init_key, \
|
---|
| 948 | aes_##mode##_cipher, \
|
---|
| 949 | aes_##mode##_cleanup, \
|
---|
| 950 | sizeof(EVP_AES_##MODE##_CTX), \
|
---|
| 951 | NULL,NULL,aes_##mode##_ctrl,NULL }; \
|
---|
| 952 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
|
---|
| 953 | { return SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; }
|
---|
| 954 |
|
---|
| 955 | #else
|
---|
| 956 |
|
---|
| 957 | # define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
|
---|
| 958 | static const EVP_CIPHER aes_##keylen##_##mode = { \
|
---|
| 959 | nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
|
---|
| 960 | flags|EVP_CIPH_##MODE##_MODE, \
|
---|
| 961 | aes_init_key, \
|
---|
| 962 | aes_##mode##_cipher, \
|
---|
| 963 | NULL, \
|
---|
| 964 | sizeof(EVP_AES_KEY), \
|
---|
| 965 | NULL,NULL,NULL,NULL }; \
|
---|
| 966 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
|
---|
| 967 | { return &aes_##keylen##_##mode; }
|
---|
| 968 |
|
---|
| 969 | # define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
|
---|
| 970 | static const EVP_CIPHER aes_##keylen##_##mode = { \
|
---|
| 971 | nid##_##keylen##_##mode,blocksize, \
|
---|
| 972 | (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
|
---|
| 973 | flags|EVP_CIPH_##MODE##_MODE, \
|
---|
| 974 | aes_##mode##_init_key, \
|
---|
| 975 | aes_##mode##_cipher, \
|
---|
| 976 | aes_##mode##_cleanup, \
|
---|
| 977 | sizeof(EVP_AES_##MODE##_CTX), \
|
---|
| 978 | NULL,NULL,aes_##mode##_ctrl,NULL }; \
|
---|
| 979 | const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
|
---|
| 980 | { return &aes_##keylen##_##mode; }
|
---|
| 981 |
|
---|
| 982 | #endif
|
---|
| 983 |
|
---|
| 984 | #if defined(OPENSSL_CPUID_OBJ) && (defined(__arm__) || defined(__arm) || defined(__aarch64__))
|
---|
| 985 | # include "arm_arch.h"
|
---|
| 986 | # if __ARM_MAX_ARCH__>=7
|
---|
| 987 | # if defined(BSAES_ASM)
|
---|
| 988 | # define BSAES_CAPABLE (OPENSSL_armcap_P & ARMV7_NEON)
|
---|
| 989 | # endif
|
---|
| 990 | # if defined(VPAES_ASM)
|
---|
| 991 | # define VPAES_CAPABLE (OPENSSL_armcap_P & ARMV7_NEON)
|
---|
| 992 | # endif
|
---|
| 993 | # define HWAES_CAPABLE (OPENSSL_armcap_P & ARMV8_AES)
|
---|
| 994 | # define HWAES_set_encrypt_key aes_v8_set_encrypt_key
|
---|
| 995 | # define HWAES_set_decrypt_key aes_v8_set_decrypt_key
|
---|
| 996 | # define HWAES_encrypt aes_v8_encrypt
|
---|
| 997 | # define HWAES_decrypt aes_v8_decrypt
|
---|
| 998 | # define HWAES_cbc_encrypt aes_v8_cbc_encrypt
|
---|
| 999 | # define HWAES_ctr32_encrypt_blocks aes_v8_ctr32_encrypt_blocks
|
---|
| 1000 | # endif
|
---|
| 1001 | #endif
|
---|
| 1002 |
|
---|
| 1003 | #if defined(HWAES_CAPABLE)
|
---|
| 1004 | int HWAES_set_encrypt_key(const unsigned char *userKey, const int bits,
|
---|
| 1005 | AES_KEY *key);
|
---|
| 1006 | int HWAES_set_decrypt_key(const unsigned char *userKey, const int bits,
|
---|
| 1007 | AES_KEY *key);
|
---|
| 1008 | void HWAES_encrypt(const unsigned char *in, unsigned char *out,
|
---|
| 1009 | const AES_KEY *key);
|
---|
| 1010 | void HWAES_decrypt(const unsigned char *in, unsigned char *out,
|
---|
| 1011 | const AES_KEY *key);
|
---|
| 1012 | void HWAES_cbc_encrypt(const unsigned char *in, unsigned char *out,
|
---|
| 1013 | size_t length, const AES_KEY *key,
|
---|
| 1014 | unsigned char *ivec, const int enc);
|
---|
| 1015 | void HWAES_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
|
---|
| 1016 | size_t len, const AES_KEY *key,
|
---|
| 1017 | const unsigned char ivec[16]);
|
---|
| 1018 | void HWAES_xts_encrypt(const unsigned char *inp, unsigned char *out,
|
---|
| 1019 | size_t len, const AES_KEY *key1,
|
---|
| 1020 | const AES_KEY *key2, const unsigned char iv[16]);
|
---|
| 1021 | void HWAES_xts_decrypt(const unsigned char *inp, unsigned char *out,
|
---|
| 1022 | size_t len, const AES_KEY *key1,
|
---|
| 1023 | const AES_KEY *key2, const unsigned char iv[16]);
|
---|
| 1024 | #endif
|
---|
| 1025 |
|
---|
| 1026 | #define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \
|
---|
| 1027 | BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
|
---|
| 1028 | BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
|
---|
| 1029 | BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
|
---|
| 1030 | BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
|
---|
| 1031 | BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \
|
---|
| 1032 | BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \
|
---|
| 1033 | BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
|
---|
| 1034 |
|
---|
| 1035 | static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
---|
| 1036 | const unsigned char *iv, int enc)
|
---|
| 1037 | {
|
---|
| 1038 | int ret, mode;
|
---|
| 1039 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
|
---|
| 1040 |
|
---|
| 1041 | mode = EVP_CIPHER_CTX_mode(ctx);
|
---|
| 1042 | if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
|
---|
| 1043 | && !enc) {
|
---|
| 1044 | #ifdef HWAES_CAPABLE
|
---|
| 1045 | if (HWAES_CAPABLE) {
|
---|
| 1046 | ret = HWAES_set_decrypt_key(key,
|
---|
| 1047 | EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 1048 | &dat->ks.ks);
|
---|
| 1049 | dat->block = (block128_f) HWAES_decrypt;
|
---|
| 1050 | dat->stream.cbc = NULL;
|
---|
| 1051 | # ifdef HWAES_cbc_encrypt
|
---|
| 1052 | if (mode == EVP_CIPH_CBC_MODE)
|
---|
| 1053 | dat->stream.cbc = (cbc128_f) HWAES_cbc_encrypt;
|
---|
| 1054 | # endif
|
---|
| 1055 | } else
|
---|
| 1056 | #endif
|
---|
| 1057 | #ifdef BSAES_CAPABLE
|
---|
| 1058 | if (BSAES_CAPABLE && mode == EVP_CIPH_CBC_MODE) {
|
---|
| 1059 | ret = AES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 1060 | &dat->ks.ks);
|
---|
| 1061 | dat->block = (block128_f) AES_decrypt;
|
---|
| 1062 | dat->stream.cbc = (cbc128_f) bsaes_cbc_encrypt;
|
---|
| 1063 | } else
|
---|
| 1064 | #endif
|
---|
| 1065 | #ifdef VPAES_CAPABLE
|
---|
| 1066 | if (VPAES_CAPABLE) {
|
---|
| 1067 | ret = vpaes_set_decrypt_key(key,
|
---|
| 1068 | EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 1069 | &dat->ks.ks);
|
---|
| 1070 | dat->block = (block128_f) vpaes_decrypt;
|
---|
| 1071 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
|
---|
| 1072 | (cbc128_f) vpaes_cbc_encrypt : NULL;
|
---|
| 1073 | } else
|
---|
| 1074 | #endif
|
---|
| 1075 | {
|
---|
| 1076 | ret = AES_set_decrypt_key(key,
|
---|
| 1077 | EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 1078 | &dat->ks.ks);
|
---|
| 1079 | dat->block = (block128_f) AES_decrypt;
|
---|
| 1080 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
|
---|
| 1081 | (cbc128_f) AES_cbc_encrypt : NULL;
|
---|
| 1082 | }
|
---|
| 1083 | } else
|
---|
| 1084 | #ifdef HWAES_CAPABLE
|
---|
| 1085 | if (HWAES_CAPABLE) {
|
---|
| 1086 | ret = HWAES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 1087 | &dat->ks.ks);
|
---|
| 1088 | dat->block = (block128_f) HWAES_encrypt;
|
---|
| 1089 | dat->stream.cbc = NULL;
|
---|
| 1090 | # ifdef HWAES_cbc_encrypt
|
---|
| 1091 | if (mode == EVP_CIPH_CBC_MODE)
|
---|
| 1092 | dat->stream.cbc = (cbc128_f) HWAES_cbc_encrypt;
|
---|
| 1093 | else
|
---|
| 1094 | # endif
|
---|
| 1095 | # ifdef HWAES_ctr32_encrypt_blocks
|
---|
| 1096 | if (mode == EVP_CIPH_CTR_MODE)
|
---|
| 1097 | dat->stream.ctr = (ctr128_f) HWAES_ctr32_encrypt_blocks;
|
---|
| 1098 | else
|
---|
| 1099 | # endif
|
---|
| 1100 | (void)0; /* terminate potentially open 'else' */
|
---|
| 1101 | } else
|
---|
| 1102 | #endif
|
---|
| 1103 | #ifdef BSAES_CAPABLE
|
---|
| 1104 | if (BSAES_CAPABLE && mode == EVP_CIPH_CTR_MODE) {
|
---|
| 1105 | ret = AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 1106 | &dat->ks.ks);
|
---|
| 1107 | dat->block = (block128_f) AES_encrypt;
|
---|
| 1108 | dat->stream.ctr = (ctr128_f) bsaes_ctr32_encrypt_blocks;
|
---|
| 1109 | } else
|
---|
| 1110 | #endif
|
---|
| 1111 | #ifdef VPAES_CAPABLE
|
---|
| 1112 | if (VPAES_CAPABLE) {
|
---|
| 1113 | ret = vpaes_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 1114 | &dat->ks.ks);
|
---|
| 1115 | dat->block = (block128_f) vpaes_encrypt;
|
---|
| 1116 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
|
---|
| 1117 | (cbc128_f) vpaes_cbc_encrypt : NULL;
|
---|
| 1118 | } else
|
---|
| 1119 | #endif
|
---|
| 1120 | {
|
---|
| 1121 | ret = AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 1122 | &dat->ks.ks);
|
---|
| 1123 | dat->block = (block128_f) AES_encrypt;
|
---|
| 1124 | dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
|
---|
| 1125 | (cbc128_f) AES_cbc_encrypt : NULL;
|
---|
| 1126 | #ifdef AES_CTR_ASM
|
---|
| 1127 | if (mode == EVP_CIPH_CTR_MODE)
|
---|
| 1128 | dat->stream.ctr = (ctr128_f) AES_ctr32_encrypt;
|
---|
| 1129 | #endif
|
---|
| 1130 | }
|
---|
| 1131 |
|
---|
| 1132 | if (ret < 0) {
|
---|
| 1133 | EVPerr(EVP_F_AES_INIT_KEY, EVP_R_AES_KEY_SETUP_FAILED);
|
---|
| 1134 | return 0;
|
---|
| 1135 | }
|
---|
| 1136 |
|
---|
| 1137 | return 1;
|
---|
| 1138 | }
|
---|
| 1139 |
|
---|
| 1140 | static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 1141 | const unsigned char *in, size_t len)
|
---|
| 1142 | {
|
---|
| 1143 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
|
---|
| 1144 |
|
---|
| 1145 | if (dat->stream.cbc)
|
---|
| 1146 | (*dat->stream.cbc) (in, out, len, &dat->ks,
|
---|
| 1147 | EVP_CIPHER_CTX_iv_noconst(ctx),
|
---|
| 1148 | EVP_CIPHER_CTX_encrypting(ctx));
|
---|
| 1149 | else if (EVP_CIPHER_CTX_encrypting(ctx))
|
---|
| 1150 | CRYPTO_cbc128_encrypt(in, out, len, &dat->ks,
|
---|
| 1151 | EVP_CIPHER_CTX_iv_noconst(ctx), dat->block);
|
---|
| 1152 | else
|
---|
| 1153 | CRYPTO_cbc128_decrypt(in, out, len, &dat->ks,
|
---|
| 1154 | EVP_CIPHER_CTX_iv_noconst(ctx), dat->block);
|
---|
| 1155 |
|
---|
| 1156 | return 1;
|
---|
| 1157 | }
|
---|
| 1158 |
|
---|
| 1159 | static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 1160 | const unsigned char *in, size_t len)
|
---|
| 1161 | {
|
---|
| 1162 | size_t bl = EVP_CIPHER_CTX_block_size(ctx);
|
---|
| 1163 | size_t i;
|
---|
| 1164 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
|
---|
| 1165 |
|
---|
| 1166 | if (len < bl)
|
---|
| 1167 | return 1;
|
---|
| 1168 |
|
---|
| 1169 | for (i = 0, len -= bl; i <= len; i += bl)
|
---|
| 1170 | (*dat->block) (in + i, out + i, &dat->ks);
|
---|
| 1171 |
|
---|
| 1172 | return 1;
|
---|
| 1173 | }
|
---|
| 1174 |
|
---|
| 1175 | static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 1176 | const unsigned char *in, size_t len)
|
---|
| 1177 | {
|
---|
| 1178 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
|
---|
| 1179 |
|
---|
| 1180 | int num = EVP_CIPHER_CTX_num(ctx);
|
---|
| 1181 | CRYPTO_ofb128_encrypt(in, out, len, &dat->ks,
|
---|
| 1182 | EVP_CIPHER_CTX_iv_noconst(ctx), &num, dat->block);
|
---|
| 1183 | EVP_CIPHER_CTX_set_num(ctx, num);
|
---|
| 1184 | return 1;
|
---|
| 1185 | }
|
---|
| 1186 |
|
---|
| 1187 | static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 1188 | const unsigned char *in, size_t len)
|
---|
| 1189 | {
|
---|
| 1190 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
|
---|
| 1191 |
|
---|
| 1192 | int num = EVP_CIPHER_CTX_num(ctx);
|
---|
| 1193 | CRYPTO_cfb128_encrypt(in, out, len, &dat->ks,
|
---|
| 1194 | EVP_CIPHER_CTX_iv_noconst(ctx), &num,
|
---|
| 1195 | EVP_CIPHER_CTX_encrypting(ctx), dat->block);
|
---|
| 1196 | EVP_CIPHER_CTX_set_num(ctx, num);
|
---|
| 1197 | return 1;
|
---|
| 1198 | }
|
---|
| 1199 |
|
---|
| 1200 | static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 1201 | const unsigned char *in, size_t len)
|
---|
| 1202 | {
|
---|
| 1203 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
|
---|
| 1204 |
|
---|
| 1205 | int num = EVP_CIPHER_CTX_num(ctx);
|
---|
| 1206 | CRYPTO_cfb128_8_encrypt(in, out, len, &dat->ks,
|
---|
| 1207 | EVP_CIPHER_CTX_iv_noconst(ctx), &num,
|
---|
| 1208 | EVP_CIPHER_CTX_encrypting(ctx), dat->block);
|
---|
| 1209 | EVP_CIPHER_CTX_set_num(ctx, num);
|
---|
| 1210 | return 1;
|
---|
| 1211 | }
|
---|
| 1212 |
|
---|
| 1213 | static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 1214 | const unsigned char *in, size_t len)
|
---|
| 1215 | {
|
---|
| 1216 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
|
---|
| 1217 |
|
---|
| 1218 | if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS)) {
|
---|
| 1219 | int num = EVP_CIPHER_CTX_num(ctx);
|
---|
| 1220 | CRYPTO_cfb128_1_encrypt(in, out, len, &dat->ks,
|
---|
| 1221 | EVP_CIPHER_CTX_iv_noconst(ctx), &num,
|
---|
| 1222 | EVP_CIPHER_CTX_encrypting(ctx), dat->block);
|
---|
| 1223 | EVP_CIPHER_CTX_set_num(ctx, num);
|
---|
| 1224 | return 1;
|
---|
| 1225 | }
|
---|
| 1226 |
|
---|
| 1227 | while (len >= MAXBITCHUNK) {
|
---|
| 1228 | int num = EVP_CIPHER_CTX_num(ctx);
|
---|
| 1229 | CRYPTO_cfb128_1_encrypt(in, out, MAXBITCHUNK * 8, &dat->ks,
|
---|
| 1230 | EVP_CIPHER_CTX_iv_noconst(ctx), &num,
|
---|
| 1231 | EVP_CIPHER_CTX_encrypting(ctx), dat->block);
|
---|
| 1232 | EVP_CIPHER_CTX_set_num(ctx, num);
|
---|
| 1233 | len -= MAXBITCHUNK;
|
---|
| 1234 | }
|
---|
| 1235 | if (len) {
|
---|
| 1236 | int num = EVP_CIPHER_CTX_num(ctx);
|
---|
| 1237 | CRYPTO_cfb128_1_encrypt(in, out, len * 8, &dat->ks,
|
---|
| 1238 | EVP_CIPHER_CTX_iv_noconst(ctx), &num,
|
---|
| 1239 | EVP_CIPHER_CTX_encrypting(ctx), dat->block);
|
---|
| 1240 | EVP_CIPHER_CTX_set_num(ctx, num);
|
---|
| 1241 | }
|
---|
| 1242 |
|
---|
| 1243 | return 1;
|
---|
| 1244 | }
|
---|
| 1245 |
|
---|
| 1246 | static int aes_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 1247 | const unsigned char *in, size_t len)
|
---|
| 1248 | {
|
---|
| 1249 | unsigned int num = EVP_CIPHER_CTX_num(ctx);
|
---|
| 1250 | EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
|
---|
| 1251 |
|
---|
| 1252 | if (dat->stream.ctr)
|
---|
| 1253 | CRYPTO_ctr128_encrypt_ctr32(in, out, len, &dat->ks,
|
---|
| 1254 | EVP_CIPHER_CTX_iv_noconst(ctx),
|
---|
| 1255 | EVP_CIPHER_CTX_buf_noconst(ctx),
|
---|
| 1256 | &num, dat->stream.ctr);
|
---|
| 1257 | else
|
---|
| 1258 | CRYPTO_ctr128_encrypt(in, out, len, &dat->ks,
|
---|
| 1259 | EVP_CIPHER_CTX_iv_noconst(ctx),
|
---|
| 1260 | EVP_CIPHER_CTX_buf_noconst(ctx), &num,
|
---|
| 1261 | dat->block);
|
---|
| 1262 | EVP_CIPHER_CTX_set_num(ctx, num);
|
---|
| 1263 | return 1;
|
---|
| 1264 | }
|
---|
| 1265 |
|
---|
| 1266 | BLOCK_CIPHER_generic_pack(NID_aes, 128, 0)
|
---|
| 1267 | BLOCK_CIPHER_generic_pack(NID_aes, 192, 0)
|
---|
| 1268 | BLOCK_CIPHER_generic_pack(NID_aes, 256, 0)
|
---|
| 1269 |
|
---|
| 1270 | static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
|
---|
| 1271 | {
|
---|
| 1272 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,c);
|
---|
| 1273 | if (gctx == NULL)
|
---|
| 1274 | return 0;
|
---|
| 1275 | OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
|
---|
| 1276 | if (gctx->iv != EVP_CIPHER_CTX_iv_noconst(c))
|
---|
| 1277 | OPENSSL_free(gctx->iv);
|
---|
| 1278 | return 1;
|
---|
| 1279 | }
|
---|
| 1280 |
|
---|
| 1281 | /* increment counter (64-bit int) by 1 */
|
---|
| 1282 | static void ctr64_inc(unsigned char *counter)
|
---|
| 1283 | {
|
---|
| 1284 | int n = 8;
|
---|
| 1285 | unsigned char c;
|
---|
| 1286 |
|
---|
| 1287 | do {
|
---|
| 1288 | --n;
|
---|
| 1289 | c = counter[n];
|
---|
| 1290 | ++c;
|
---|
| 1291 | counter[n] = c;
|
---|
| 1292 | if (c)
|
---|
| 1293 | return;
|
---|
| 1294 | } while (n);
|
---|
| 1295 | }
|
---|
| 1296 |
|
---|
| 1297 | static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
|
---|
| 1298 | {
|
---|
| 1299 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,c);
|
---|
| 1300 | switch (type) {
|
---|
| 1301 | case EVP_CTRL_INIT:
|
---|
| 1302 | gctx->key_set = 0;
|
---|
| 1303 | gctx->iv_set = 0;
|
---|
| 1304 | gctx->ivlen = EVP_CIPHER_CTX_iv_length(c);
|
---|
| 1305 | gctx->iv = EVP_CIPHER_CTX_iv_noconst(c);
|
---|
| 1306 | gctx->taglen = -1;
|
---|
| 1307 | gctx->iv_gen = 0;
|
---|
| 1308 | gctx->tls_aad_len = -1;
|
---|
| 1309 | return 1;
|
---|
| 1310 |
|
---|
| 1311 | case EVP_CTRL_AEAD_SET_IVLEN:
|
---|
| 1312 | if (arg <= 0)
|
---|
| 1313 | return 0;
|
---|
| 1314 | /* Allocate memory for IV if needed */
|
---|
| 1315 | if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen)) {
|
---|
| 1316 | if (gctx->iv != EVP_CIPHER_CTX_iv_noconst(c))
|
---|
| 1317 | OPENSSL_free(gctx->iv);
|
---|
| 1318 | gctx->iv = OPENSSL_malloc(arg);
|
---|
| 1319 | if (gctx->iv == NULL)
|
---|
| 1320 | return 0;
|
---|
| 1321 | }
|
---|
| 1322 | gctx->ivlen = arg;
|
---|
| 1323 | return 1;
|
---|
| 1324 |
|
---|
| 1325 | case EVP_CTRL_AEAD_SET_TAG:
|
---|
| 1326 | if (arg <= 0 || arg > 16 || EVP_CIPHER_CTX_encrypting(c))
|
---|
| 1327 | return 0;
|
---|
| 1328 | memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
|
---|
| 1329 | gctx->taglen = arg;
|
---|
| 1330 | return 1;
|
---|
| 1331 |
|
---|
| 1332 | case EVP_CTRL_AEAD_GET_TAG:
|
---|
| 1333 | if (arg <= 0 || arg > 16 || !EVP_CIPHER_CTX_encrypting(c)
|
---|
| 1334 | || gctx->taglen < 0)
|
---|
| 1335 | return 0;
|
---|
| 1336 | memcpy(ptr, EVP_CIPHER_CTX_buf_noconst(c), arg);
|
---|
| 1337 | return 1;
|
---|
| 1338 |
|
---|
| 1339 | case EVP_CTRL_GCM_SET_IV_FIXED:
|
---|
| 1340 | /* Special case: -1 length restores whole IV */
|
---|
| 1341 | if (arg == -1) {
|
---|
| 1342 | memcpy(gctx->iv, ptr, gctx->ivlen);
|
---|
| 1343 | gctx->iv_gen = 1;
|
---|
| 1344 | return 1;
|
---|
| 1345 | }
|
---|
| 1346 | /*
|
---|
| 1347 | * Fixed field must be at least 4 bytes and invocation field at least
|
---|
| 1348 | * 8.
|
---|
| 1349 | */
|
---|
| 1350 | if ((arg < 4) || (gctx->ivlen - arg) < 8)
|
---|
| 1351 | return 0;
|
---|
| 1352 | if (arg)
|
---|
| 1353 | memcpy(gctx->iv, ptr, arg);
|
---|
| 1354 | if (EVP_CIPHER_CTX_encrypting(c)
|
---|
| 1355 | && RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
|
---|
| 1356 | return 0;
|
---|
| 1357 | gctx->iv_gen = 1;
|
---|
| 1358 | return 1;
|
---|
| 1359 |
|
---|
| 1360 | case EVP_CTRL_GCM_IV_GEN:
|
---|
| 1361 | if (gctx->iv_gen == 0 || gctx->key_set == 0)
|
---|
| 1362 | return 0;
|
---|
| 1363 | CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
|
---|
| 1364 | if (arg <= 0 || arg > gctx->ivlen)
|
---|
| 1365 | arg = gctx->ivlen;
|
---|
| 1366 | memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
|
---|
| 1367 | /*
|
---|
| 1368 | * Invocation field will be at least 8 bytes in size and so no need
|
---|
| 1369 | * to check wrap around or increment more than last 8 bytes.
|
---|
| 1370 | */
|
---|
| 1371 | ctr64_inc(gctx->iv + gctx->ivlen - 8);
|
---|
| 1372 | gctx->iv_set = 1;
|
---|
| 1373 | return 1;
|
---|
| 1374 |
|
---|
| 1375 | case EVP_CTRL_GCM_SET_IV_INV:
|
---|
| 1376 | if (gctx->iv_gen == 0 || gctx->key_set == 0
|
---|
| 1377 | || EVP_CIPHER_CTX_encrypting(c))
|
---|
| 1378 | return 0;
|
---|
| 1379 | memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
|
---|
| 1380 | CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
|
---|
| 1381 | gctx->iv_set = 1;
|
---|
| 1382 | return 1;
|
---|
| 1383 |
|
---|
| 1384 | case EVP_CTRL_AEAD_TLS1_AAD:
|
---|
| 1385 | /* Save the AAD for later use */
|
---|
| 1386 | if (arg != EVP_AEAD_TLS1_AAD_LEN)
|
---|
| 1387 | return 0;
|
---|
| 1388 | memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
|
---|
| 1389 | gctx->tls_aad_len = arg;
|
---|
| 1390 | {
|
---|
| 1391 | unsigned int len =
|
---|
| 1392 | EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] << 8
|
---|
| 1393 | | EVP_CIPHER_CTX_buf_noconst(c)[arg - 1];
|
---|
| 1394 | /* Correct length for explicit IV */
|
---|
| 1395 | if (len < EVP_GCM_TLS_EXPLICIT_IV_LEN)
|
---|
| 1396 | return 0;
|
---|
| 1397 | len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
|
---|
| 1398 | /* If decrypting correct for tag too */
|
---|
| 1399 | if (!EVP_CIPHER_CTX_encrypting(c)) {
|
---|
| 1400 | if (len < EVP_GCM_TLS_TAG_LEN)
|
---|
| 1401 | return 0;
|
---|
| 1402 | len -= EVP_GCM_TLS_TAG_LEN;
|
---|
| 1403 | }
|
---|
| 1404 | EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] = len >> 8;
|
---|
| 1405 | EVP_CIPHER_CTX_buf_noconst(c)[arg - 1] = len & 0xff;
|
---|
| 1406 | }
|
---|
| 1407 | /* Extra padding: tag appended to record */
|
---|
| 1408 | return EVP_GCM_TLS_TAG_LEN;
|
---|
| 1409 |
|
---|
| 1410 | case EVP_CTRL_COPY:
|
---|
| 1411 | {
|
---|
| 1412 | EVP_CIPHER_CTX *out = ptr;
|
---|
| 1413 | EVP_AES_GCM_CTX *gctx_out = EVP_C_DATA(EVP_AES_GCM_CTX,out);
|
---|
| 1414 | if (gctx->gcm.key) {
|
---|
| 1415 | if (gctx->gcm.key != &gctx->ks)
|
---|
| 1416 | return 0;
|
---|
| 1417 | gctx_out->gcm.key = &gctx_out->ks;
|
---|
| 1418 | }
|
---|
| 1419 | if (gctx->iv == EVP_CIPHER_CTX_iv_noconst(c))
|
---|
| 1420 | gctx_out->iv = EVP_CIPHER_CTX_iv_noconst(out);
|
---|
| 1421 | else {
|
---|
| 1422 | gctx_out->iv = OPENSSL_malloc(gctx->ivlen);
|
---|
| 1423 | if (gctx_out->iv == NULL)
|
---|
| 1424 | return 0;
|
---|
| 1425 | memcpy(gctx_out->iv, gctx->iv, gctx->ivlen);
|
---|
| 1426 | }
|
---|
| 1427 | return 1;
|
---|
| 1428 | }
|
---|
| 1429 |
|
---|
| 1430 | default:
|
---|
| 1431 | return -1;
|
---|
| 1432 |
|
---|
| 1433 | }
|
---|
| 1434 | }
|
---|
| 1435 |
|
---|
| 1436 | static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
---|
| 1437 | const unsigned char *iv, int enc)
|
---|
| 1438 | {
|
---|
| 1439 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx);
|
---|
| 1440 | if (!iv && !key)
|
---|
| 1441 | return 1;
|
---|
| 1442 | if (key) {
|
---|
| 1443 | do {
|
---|
| 1444 | #ifdef HWAES_CAPABLE
|
---|
| 1445 | if (HWAES_CAPABLE) {
|
---|
| 1446 | HWAES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 1447 | &gctx->ks.ks);
|
---|
| 1448 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
|
---|
| 1449 | (block128_f) HWAES_encrypt);
|
---|
| 1450 | # ifdef HWAES_ctr32_encrypt_blocks
|
---|
| 1451 | gctx->ctr = (ctr128_f) HWAES_ctr32_encrypt_blocks;
|
---|
| 1452 | # else
|
---|
| 1453 | gctx->ctr = NULL;
|
---|
| 1454 | # endif
|
---|
| 1455 | break;
|
---|
| 1456 | } else
|
---|
| 1457 | #endif
|
---|
| 1458 | #ifdef BSAES_CAPABLE
|
---|
| 1459 | if (BSAES_CAPABLE) {
|
---|
| 1460 | AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 1461 | &gctx->ks.ks);
|
---|
| 1462 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
|
---|
| 1463 | (block128_f) AES_encrypt);
|
---|
| 1464 | gctx->ctr = (ctr128_f) bsaes_ctr32_encrypt_blocks;
|
---|
| 1465 | break;
|
---|
| 1466 | } else
|
---|
| 1467 | #endif
|
---|
| 1468 | #ifdef VPAES_CAPABLE
|
---|
| 1469 | if (VPAES_CAPABLE) {
|
---|
| 1470 | vpaes_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 1471 | &gctx->ks.ks);
|
---|
| 1472 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
|
---|
| 1473 | (block128_f) vpaes_encrypt);
|
---|
| 1474 | gctx->ctr = NULL;
|
---|
| 1475 | break;
|
---|
| 1476 | } else
|
---|
| 1477 | #endif
|
---|
| 1478 | (void)0; /* terminate potentially open 'else' */
|
---|
| 1479 |
|
---|
| 1480 | AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 1481 | &gctx->ks.ks);
|
---|
| 1482 | CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
|
---|
| 1483 | (block128_f) AES_encrypt);
|
---|
| 1484 | #ifdef AES_CTR_ASM
|
---|
| 1485 | gctx->ctr = (ctr128_f) AES_ctr32_encrypt;
|
---|
| 1486 | #else
|
---|
| 1487 | gctx->ctr = NULL;
|
---|
| 1488 | #endif
|
---|
| 1489 | } while (0);
|
---|
| 1490 |
|
---|
| 1491 | /*
|
---|
| 1492 | * If we have an iv can set it directly, otherwise use saved IV.
|
---|
| 1493 | */
|
---|
| 1494 | if (iv == NULL && gctx->iv_set)
|
---|
| 1495 | iv = gctx->iv;
|
---|
| 1496 | if (iv) {
|
---|
| 1497 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
|
---|
| 1498 | gctx->iv_set = 1;
|
---|
| 1499 | }
|
---|
| 1500 | gctx->key_set = 1;
|
---|
| 1501 | } else {
|
---|
| 1502 | /* If key set use IV, otherwise copy */
|
---|
| 1503 | if (gctx->key_set)
|
---|
| 1504 | CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
|
---|
| 1505 | else
|
---|
| 1506 | memcpy(gctx->iv, iv, gctx->ivlen);
|
---|
| 1507 | gctx->iv_set = 1;
|
---|
| 1508 | gctx->iv_gen = 0;
|
---|
| 1509 | }
|
---|
| 1510 | return 1;
|
---|
| 1511 | }
|
---|
| 1512 |
|
---|
| 1513 | /*
|
---|
| 1514 | * Handle TLS GCM packet format. This consists of the last portion of the IV
|
---|
| 1515 | * followed by the payload and finally the tag. On encrypt generate IV,
|
---|
| 1516 | * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
|
---|
| 1517 | * and verify tag.
|
---|
| 1518 | */
|
---|
| 1519 |
|
---|
| 1520 | static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 1521 | const unsigned char *in, size_t len)
|
---|
| 1522 | {
|
---|
| 1523 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx);
|
---|
| 1524 | int rv = -1;
|
---|
| 1525 | /* Encrypt/decrypt must be performed in place */
|
---|
| 1526 | if (out != in
|
---|
| 1527 | || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN))
|
---|
| 1528 | return -1;
|
---|
| 1529 | /*
|
---|
| 1530 | * Set IV from start of buffer or generate IV and write to start of
|
---|
| 1531 | * buffer.
|
---|
| 1532 | */
|
---|
| 1533 | if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CIPHER_CTX_encrypting(ctx) ?
|
---|
| 1534 | EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
|
---|
| 1535 | EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
|
---|
| 1536 | goto err;
|
---|
| 1537 | /* Use saved AAD */
|
---|
| 1538 | if (CRYPTO_gcm128_aad(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx),
|
---|
| 1539 | gctx->tls_aad_len))
|
---|
| 1540 | goto err;
|
---|
| 1541 | /* Fix buffer and length to point to payload */
|
---|
| 1542 | in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
|
---|
| 1543 | out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
|
---|
| 1544 | len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
|
---|
| 1545 | if (EVP_CIPHER_CTX_encrypting(ctx)) {
|
---|
| 1546 | /* Encrypt payload */
|
---|
| 1547 | if (gctx->ctr) {
|
---|
| 1548 | size_t bulk = 0;
|
---|
| 1549 | #if defined(AES_GCM_ASM)
|
---|
| 1550 | if (len >= 32 && AES_GCM_ASM(gctx)) {
|
---|
| 1551 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, NULL, NULL, 0))
|
---|
| 1552 | return -1;
|
---|
| 1553 |
|
---|
| 1554 | bulk = AES_gcm_encrypt(in, out, len,
|
---|
| 1555 | gctx->gcm.key,
|
---|
| 1556 | gctx->gcm.Yi.c, gctx->gcm.Xi.u);
|
---|
| 1557 | gctx->gcm.len.u[1] += bulk;
|
---|
| 1558 | }
|
---|
| 1559 | #endif
|
---|
| 1560 | if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
|
---|
| 1561 | in + bulk,
|
---|
| 1562 | out + bulk,
|
---|
| 1563 | len - bulk, gctx->ctr))
|
---|
| 1564 | goto err;
|
---|
| 1565 | } else {
|
---|
| 1566 | size_t bulk = 0;
|
---|
| 1567 | #if defined(AES_GCM_ASM2)
|
---|
| 1568 | if (len >= 32 && AES_GCM_ASM2(gctx)) {
|
---|
| 1569 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, NULL, NULL, 0))
|
---|
| 1570 | return -1;
|
---|
| 1571 |
|
---|
| 1572 | bulk = AES_gcm_encrypt(in, out, len,
|
---|
| 1573 | gctx->gcm.key,
|
---|
| 1574 | gctx->gcm.Yi.c, gctx->gcm.Xi.u);
|
---|
| 1575 | gctx->gcm.len.u[1] += bulk;
|
---|
| 1576 | }
|
---|
| 1577 | #endif
|
---|
| 1578 | if (CRYPTO_gcm128_encrypt(&gctx->gcm,
|
---|
| 1579 | in + bulk, out + bulk, len - bulk))
|
---|
| 1580 | goto err;
|
---|
| 1581 | }
|
---|
| 1582 | out += len;
|
---|
| 1583 | /* Finally write tag */
|
---|
| 1584 | CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
|
---|
| 1585 | rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
|
---|
| 1586 | } else {
|
---|
| 1587 | /* Decrypt */
|
---|
| 1588 | if (gctx->ctr) {
|
---|
| 1589 | size_t bulk = 0;
|
---|
| 1590 | #if defined(AES_GCM_ASM)
|
---|
| 1591 | if (len >= 16 && AES_GCM_ASM(gctx)) {
|
---|
| 1592 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, NULL, NULL, 0))
|
---|
| 1593 | return -1;
|
---|
| 1594 |
|
---|
| 1595 | bulk = AES_gcm_decrypt(in, out, len,
|
---|
| 1596 | gctx->gcm.key,
|
---|
| 1597 | gctx->gcm.Yi.c, gctx->gcm.Xi.u);
|
---|
| 1598 | gctx->gcm.len.u[1] += bulk;
|
---|
| 1599 | }
|
---|
| 1600 | #endif
|
---|
| 1601 | if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
|
---|
| 1602 | in + bulk,
|
---|
| 1603 | out + bulk,
|
---|
| 1604 | len - bulk, gctx->ctr))
|
---|
| 1605 | goto err;
|
---|
| 1606 | } else {
|
---|
| 1607 | size_t bulk = 0;
|
---|
| 1608 | #if defined(AES_GCM_ASM2)
|
---|
| 1609 | if (len >= 16 && AES_GCM_ASM2(gctx)) {
|
---|
| 1610 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, NULL, NULL, 0))
|
---|
| 1611 | return -1;
|
---|
| 1612 |
|
---|
| 1613 | bulk = AES_gcm_decrypt(in, out, len,
|
---|
| 1614 | gctx->gcm.key,
|
---|
| 1615 | gctx->gcm.Yi.c, gctx->gcm.Xi.u);
|
---|
| 1616 | gctx->gcm.len.u[1] += bulk;
|
---|
| 1617 | }
|
---|
| 1618 | #endif
|
---|
| 1619 | if (CRYPTO_gcm128_decrypt(&gctx->gcm,
|
---|
| 1620 | in + bulk, out + bulk, len - bulk))
|
---|
| 1621 | goto err;
|
---|
| 1622 | }
|
---|
| 1623 | /* Retrieve tag */
|
---|
| 1624 | CRYPTO_gcm128_tag(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx),
|
---|
| 1625 | EVP_GCM_TLS_TAG_LEN);
|
---|
| 1626 | /* If tag mismatch wipe buffer */
|
---|
| 1627 | if (CRYPTO_memcmp(EVP_CIPHER_CTX_buf_noconst(ctx), in + len,
|
---|
| 1628 | EVP_GCM_TLS_TAG_LEN)) {
|
---|
| 1629 | OPENSSL_cleanse(out, len);
|
---|
| 1630 | goto err;
|
---|
| 1631 | }
|
---|
| 1632 | rv = len;
|
---|
| 1633 | }
|
---|
| 1634 |
|
---|
| 1635 | err:
|
---|
| 1636 | gctx->iv_set = 0;
|
---|
| 1637 | gctx->tls_aad_len = -1;
|
---|
| 1638 | return rv;
|
---|
| 1639 | }
|
---|
| 1640 |
|
---|
| 1641 | static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 1642 | const unsigned char *in, size_t len)
|
---|
| 1643 | {
|
---|
| 1644 | EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx);
|
---|
| 1645 | /* If not set up, return error */
|
---|
| 1646 | if (!gctx->key_set)
|
---|
| 1647 | return -1;
|
---|
| 1648 |
|
---|
| 1649 | if (gctx->tls_aad_len >= 0)
|
---|
| 1650 | return aes_gcm_tls_cipher(ctx, out, in, len);
|
---|
| 1651 |
|
---|
| 1652 | if (!gctx->iv_set)
|
---|
| 1653 | return -1;
|
---|
| 1654 | if (in) {
|
---|
| 1655 | if (out == NULL) {
|
---|
| 1656 | if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
|
---|
| 1657 | return -1;
|
---|
| 1658 | } else if (EVP_CIPHER_CTX_encrypting(ctx)) {
|
---|
| 1659 | if (gctx->ctr) {
|
---|
| 1660 | size_t bulk = 0;
|
---|
| 1661 | #if defined(AES_GCM_ASM)
|
---|
| 1662 | if (len >= 32 && AES_GCM_ASM(gctx)) {
|
---|
| 1663 | size_t res = (16 - gctx->gcm.mres) % 16;
|
---|
| 1664 |
|
---|
| 1665 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, res))
|
---|
| 1666 | return -1;
|
---|
| 1667 |
|
---|
| 1668 | bulk = AES_gcm_encrypt(in + res,
|
---|
| 1669 | out + res, len - res,
|
---|
| 1670 | gctx->gcm.key, gctx->gcm.Yi.c,
|
---|
| 1671 | gctx->gcm.Xi.u);
|
---|
| 1672 | gctx->gcm.len.u[1] += bulk;
|
---|
| 1673 | bulk += res;
|
---|
| 1674 | }
|
---|
| 1675 | #endif
|
---|
| 1676 | if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
|
---|
| 1677 | in + bulk,
|
---|
| 1678 | out + bulk,
|
---|
| 1679 | len - bulk, gctx->ctr))
|
---|
| 1680 | return -1;
|
---|
| 1681 | } else {
|
---|
| 1682 | size_t bulk = 0;
|
---|
| 1683 | #if defined(AES_GCM_ASM2)
|
---|
| 1684 | if (len >= 32 && AES_GCM_ASM2(gctx)) {
|
---|
| 1685 | size_t res = (16 - gctx->gcm.mres) % 16;
|
---|
| 1686 |
|
---|
| 1687 | if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, res))
|
---|
| 1688 | return -1;
|
---|
| 1689 |
|
---|
| 1690 | bulk = AES_gcm_encrypt(in + res,
|
---|
| 1691 | out + res, len - res,
|
---|
| 1692 | gctx->gcm.key, gctx->gcm.Yi.c,
|
---|
| 1693 | gctx->gcm.Xi.u);
|
---|
| 1694 | gctx->gcm.len.u[1] += bulk;
|
---|
| 1695 | bulk += res;
|
---|
| 1696 | }
|
---|
| 1697 | #endif
|
---|
| 1698 | if (CRYPTO_gcm128_encrypt(&gctx->gcm,
|
---|
| 1699 | in + bulk, out + bulk, len - bulk))
|
---|
| 1700 | return -1;
|
---|
| 1701 | }
|
---|
| 1702 | } else {
|
---|
| 1703 | if (gctx->ctr) {
|
---|
| 1704 | size_t bulk = 0;
|
---|
| 1705 | #if defined(AES_GCM_ASM)
|
---|
| 1706 | if (len >= 16 && AES_GCM_ASM(gctx)) {
|
---|
| 1707 | size_t res = (16 - gctx->gcm.mres) % 16;
|
---|
| 1708 |
|
---|
| 1709 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, res))
|
---|
| 1710 | return -1;
|
---|
| 1711 |
|
---|
| 1712 | bulk = AES_gcm_decrypt(in + res,
|
---|
| 1713 | out + res, len - res,
|
---|
| 1714 | gctx->gcm.key,
|
---|
| 1715 | gctx->gcm.Yi.c, gctx->gcm.Xi.u);
|
---|
| 1716 | gctx->gcm.len.u[1] += bulk;
|
---|
| 1717 | bulk += res;
|
---|
| 1718 | }
|
---|
| 1719 | #endif
|
---|
| 1720 | if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
|
---|
| 1721 | in + bulk,
|
---|
| 1722 | out + bulk,
|
---|
| 1723 | len - bulk, gctx->ctr))
|
---|
| 1724 | return -1;
|
---|
| 1725 | } else {
|
---|
| 1726 | size_t bulk = 0;
|
---|
| 1727 | #if defined(AES_GCM_ASM2)
|
---|
| 1728 | if (len >= 16 && AES_GCM_ASM2(gctx)) {
|
---|
| 1729 | size_t res = (16 - gctx->gcm.mres) % 16;
|
---|
| 1730 |
|
---|
| 1731 | if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, res))
|
---|
| 1732 | return -1;
|
---|
| 1733 |
|
---|
| 1734 | bulk = AES_gcm_decrypt(in + res,
|
---|
| 1735 | out + res, len - res,
|
---|
| 1736 | gctx->gcm.key,
|
---|
| 1737 | gctx->gcm.Yi.c, gctx->gcm.Xi.u);
|
---|
| 1738 | gctx->gcm.len.u[1] += bulk;
|
---|
| 1739 | bulk += res;
|
---|
| 1740 | }
|
---|
| 1741 | #endif
|
---|
| 1742 | if (CRYPTO_gcm128_decrypt(&gctx->gcm,
|
---|
| 1743 | in + bulk, out + bulk, len - bulk))
|
---|
| 1744 | return -1;
|
---|
| 1745 | }
|
---|
| 1746 | }
|
---|
| 1747 | return len;
|
---|
| 1748 | } else {
|
---|
| 1749 | if (!EVP_CIPHER_CTX_encrypting(ctx)) {
|
---|
| 1750 | if (gctx->taglen < 0)
|
---|
| 1751 | return -1;
|
---|
| 1752 | if (CRYPTO_gcm128_finish(&gctx->gcm,
|
---|
| 1753 | EVP_CIPHER_CTX_buf_noconst(ctx),
|
---|
| 1754 | gctx->taglen) != 0)
|
---|
| 1755 | return -1;
|
---|
| 1756 | gctx->iv_set = 0;
|
---|
| 1757 | return 0;
|
---|
| 1758 | }
|
---|
| 1759 | CRYPTO_gcm128_tag(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx), 16);
|
---|
| 1760 | gctx->taglen = 16;
|
---|
| 1761 | /* Don't reuse the IV */
|
---|
| 1762 | gctx->iv_set = 0;
|
---|
| 1763 | return 0;
|
---|
| 1764 | }
|
---|
| 1765 |
|
---|
| 1766 | }
|
---|
| 1767 |
|
---|
| 1768 | #define CUSTOM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \
|
---|
| 1769 | | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
|
---|
| 1770 | | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \
|
---|
| 1771 | | EVP_CIPH_CUSTOM_COPY)
|
---|
| 1772 |
|
---|
| 1773 | BLOCK_CIPHER_custom(NID_aes, 128, 1, 12, gcm, GCM,
|
---|
| 1774 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
|
---|
| 1775 | BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, gcm, GCM,
|
---|
| 1776 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
|
---|
| 1777 | BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, gcm, GCM,
|
---|
| 1778 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
|
---|
| 1779 |
|
---|
| 1780 | static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
|
---|
| 1781 | {
|
---|
| 1782 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,c);
|
---|
| 1783 | if (type == EVP_CTRL_COPY) {
|
---|
| 1784 | EVP_CIPHER_CTX *out = ptr;
|
---|
| 1785 | EVP_AES_XTS_CTX *xctx_out = EVP_C_DATA(EVP_AES_XTS_CTX,out);
|
---|
| 1786 | if (xctx->xts.key1) {
|
---|
| 1787 | if (xctx->xts.key1 != &xctx->ks1)
|
---|
| 1788 | return 0;
|
---|
| 1789 | xctx_out->xts.key1 = &xctx_out->ks1;
|
---|
| 1790 | }
|
---|
| 1791 | if (xctx->xts.key2) {
|
---|
| 1792 | if (xctx->xts.key2 != &xctx->ks2)
|
---|
| 1793 | return 0;
|
---|
| 1794 | xctx_out->xts.key2 = &xctx_out->ks2;
|
---|
| 1795 | }
|
---|
| 1796 | return 1;
|
---|
| 1797 | } else if (type != EVP_CTRL_INIT)
|
---|
| 1798 | return -1;
|
---|
| 1799 | /* key1 and key2 are used as an indicator both key and IV are set */
|
---|
| 1800 | xctx->xts.key1 = NULL;
|
---|
| 1801 | xctx->xts.key2 = NULL;
|
---|
| 1802 | return 1;
|
---|
| 1803 | }
|
---|
| 1804 |
|
---|
| 1805 | static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
---|
| 1806 | const unsigned char *iv, int enc)
|
---|
| 1807 | {
|
---|
| 1808 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx);
|
---|
| 1809 | if (!iv && !key)
|
---|
| 1810 | return 1;
|
---|
| 1811 |
|
---|
| 1812 | if (key)
|
---|
| 1813 | do {
|
---|
| 1814 | #ifdef AES_XTS_ASM
|
---|
| 1815 | xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt;
|
---|
| 1816 | #else
|
---|
| 1817 | xctx->stream = NULL;
|
---|
| 1818 | #endif
|
---|
| 1819 | /* key_len is two AES keys */
|
---|
| 1820 | #ifdef HWAES_CAPABLE
|
---|
| 1821 | if (HWAES_CAPABLE) {
|
---|
| 1822 | if (enc) {
|
---|
| 1823 | HWAES_set_encrypt_key(key,
|
---|
| 1824 | EVP_CIPHER_CTX_key_length(ctx) * 4,
|
---|
| 1825 | &xctx->ks1.ks);
|
---|
| 1826 | xctx->xts.block1 = (block128_f) HWAES_encrypt;
|
---|
| 1827 | # ifdef HWAES_xts_encrypt
|
---|
| 1828 | xctx->stream = HWAES_xts_encrypt;
|
---|
| 1829 | # endif
|
---|
| 1830 | } else {
|
---|
| 1831 | HWAES_set_decrypt_key(key,
|
---|
| 1832 | EVP_CIPHER_CTX_key_length(ctx) * 4,
|
---|
| 1833 | &xctx->ks1.ks);
|
---|
| 1834 | xctx->xts.block1 = (block128_f) HWAES_decrypt;
|
---|
| 1835 | # ifdef HWAES_xts_decrypt
|
---|
| 1836 | xctx->stream = HWAES_xts_decrypt;
|
---|
| 1837 | #endif
|
---|
| 1838 | }
|
---|
| 1839 |
|
---|
| 1840 | HWAES_set_encrypt_key(key + EVP_CIPHER_CTX_key_length(ctx) / 2,
|
---|
| 1841 | EVP_CIPHER_CTX_key_length(ctx) * 4,
|
---|
| 1842 | &xctx->ks2.ks);
|
---|
| 1843 | xctx->xts.block2 = (block128_f) HWAES_encrypt;
|
---|
| 1844 |
|
---|
| 1845 | xctx->xts.key1 = &xctx->ks1;
|
---|
| 1846 | break;
|
---|
| 1847 | } else
|
---|
| 1848 | #endif
|
---|
| 1849 | #ifdef BSAES_CAPABLE
|
---|
| 1850 | if (BSAES_CAPABLE)
|
---|
| 1851 | xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt;
|
---|
| 1852 | else
|
---|
| 1853 | #endif
|
---|
| 1854 | #ifdef VPAES_CAPABLE
|
---|
| 1855 | if (VPAES_CAPABLE) {
|
---|
| 1856 | if (enc) {
|
---|
| 1857 | vpaes_set_encrypt_key(key,
|
---|
| 1858 | EVP_CIPHER_CTX_key_length(ctx) * 4,
|
---|
| 1859 | &xctx->ks1.ks);
|
---|
| 1860 | xctx->xts.block1 = (block128_f) vpaes_encrypt;
|
---|
| 1861 | } else {
|
---|
| 1862 | vpaes_set_decrypt_key(key,
|
---|
| 1863 | EVP_CIPHER_CTX_key_length(ctx) * 4,
|
---|
| 1864 | &xctx->ks1.ks);
|
---|
| 1865 | xctx->xts.block1 = (block128_f) vpaes_decrypt;
|
---|
| 1866 | }
|
---|
| 1867 |
|
---|
| 1868 | vpaes_set_encrypt_key(key + EVP_CIPHER_CTX_key_length(ctx) / 2,
|
---|
| 1869 | EVP_CIPHER_CTX_key_length(ctx) * 4,
|
---|
| 1870 | &xctx->ks2.ks);
|
---|
| 1871 | xctx->xts.block2 = (block128_f) vpaes_encrypt;
|
---|
| 1872 |
|
---|
| 1873 | xctx->xts.key1 = &xctx->ks1;
|
---|
| 1874 | break;
|
---|
| 1875 | } else
|
---|
| 1876 | #endif
|
---|
| 1877 | (void)0; /* terminate potentially open 'else' */
|
---|
| 1878 |
|
---|
| 1879 | if (enc) {
|
---|
| 1880 | AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 4,
|
---|
| 1881 | &xctx->ks1.ks);
|
---|
| 1882 | xctx->xts.block1 = (block128_f) AES_encrypt;
|
---|
| 1883 | } else {
|
---|
| 1884 | AES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 4,
|
---|
| 1885 | &xctx->ks1.ks);
|
---|
| 1886 | xctx->xts.block1 = (block128_f) AES_decrypt;
|
---|
| 1887 | }
|
---|
| 1888 |
|
---|
| 1889 | AES_set_encrypt_key(key + EVP_CIPHER_CTX_key_length(ctx) / 2,
|
---|
| 1890 | EVP_CIPHER_CTX_key_length(ctx) * 4,
|
---|
| 1891 | &xctx->ks2.ks);
|
---|
| 1892 | xctx->xts.block2 = (block128_f) AES_encrypt;
|
---|
| 1893 |
|
---|
| 1894 | xctx->xts.key1 = &xctx->ks1;
|
---|
| 1895 | } while (0);
|
---|
| 1896 |
|
---|
| 1897 | if (iv) {
|
---|
| 1898 | xctx->xts.key2 = &xctx->ks2;
|
---|
| 1899 | memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 16);
|
---|
| 1900 | }
|
---|
| 1901 |
|
---|
| 1902 | return 1;
|
---|
| 1903 | }
|
---|
| 1904 |
|
---|
| 1905 | static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 1906 | const unsigned char *in, size_t len)
|
---|
| 1907 | {
|
---|
| 1908 | EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx);
|
---|
| 1909 | if (!xctx->xts.key1 || !xctx->xts.key2)
|
---|
| 1910 | return 0;
|
---|
| 1911 | if (!out || !in || len < AES_BLOCK_SIZE)
|
---|
| 1912 | return 0;
|
---|
| 1913 | if (xctx->stream)
|
---|
| 1914 | (*xctx->stream) (in, out, len,
|
---|
| 1915 | xctx->xts.key1, xctx->xts.key2,
|
---|
| 1916 | EVP_CIPHER_CTX_iv_noconst(ctx));
|
---|
| 1917 | else if (CRYPTO_xts128_encrypt(&xctx->xts, EVP_CIPHER_CTX_iv_noconst(ctx),
|
---|
| 1918 | in, out, len,
|
---|
| 1919 | EVP_CIPHER_CTX_encrypting(ctx)))
|
---|
| 1920 | return 0;
|
---|
| 1921 | return 1;
|
---|
| 1922 | }
|
---|
| 1923 |
|
---|
| 1924 | #define aes_xts_cleanup NULL
|
---|
| 1925 |
|
---|
| 1926 | #define XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
|
---|
| 1927 | | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \
|
---|
| 1928 | | EVP_CIPH_CUSTOM_COPY)
|
---|
| 1929 |
|
---|
| 1930 | BLOCK_CIPHER_custom(NID_aes, 128, 1, 16, xts, XTS, XTS_FLAGS)
|
---|
| 1931 | BLOCK_CIPHER_custom(NID_aes, 256, 1, 16, xts, XTS, XTS_FLAGS)
|
---|
| 1932 |
|
---|
| 1933 | static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
|
---|
| 1934 | {
|
---|
| 1935 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,c);
|
---|
| 1936 | switch (type) {
|
---|
| 1937 | case EVP_CTRL_INIT:
|
---|
| 1938 | cctx->key_set = 0;
|
---|
| 1939 | cctx->iv_set = 0;
|
---|
| 1940 | cctx->L = 8;
|
---|
| 1941 | cctx->M = 12;
|
---|
| 1942 | cctx->tag_set = 0;
|
---|
| 1943 | cctx->len_set = 0;
|
---|
| 1944 | cctx->tls_aad_len = -1;
|
---|
| 1945 | return 1;
|
---|
| 1946 |
|
---|
| 1947 | case EVP_CTRL_AEAD_TLS1_AAD:
|
---|
| 1948 | /* Save the AAD for later use */
|
---|
| 1949 | if (arg != EVP_AEAD_TLS1_AAD_LEN)
|
---|
| 1950 | return 0;
|
---|
| 1951 | memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
|
---|
| 1952 | cctx->tls_aad_len = arg;
|
---|
| 1953 | {
|
---|
| 1954 | uint16_t len =
|
---|
| 1955 | EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] << 8
|
---|
| 1956 | | EVP_CIPHER_CTX_buf_noconst(c)[arg - 1];
|
---|
| 1957 | /* Correct length for explicit IV */
|
---|
| 1958 | if (len < EVP_CCM_TLS_EXPLICIT_IV_LEN)
|
---|
| 1959 | return 0;
|
---|
| 1960 | len -= EVP_CCM_TLS_EXPLICIT_IV_LEN;
|
---|
| 1961 | /* If decrypting correct for tag too */
|
---|
| 1962 | if (!EVP_CIPHER_CTX_encrypting(c)) {
|
---|
| 1963 | if (len < cctx->M)
|
---|
| 1964 | return 0;
|
---|
| 1965 | len -= cctx->M;
|
---|
| 1966 | }
|
---|
| 1967 | EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] = len >> 8;
|
---|
| 1968 | EVP_CIPHER_CTX_buf_noconst(c)[arg - 1] = len & 0xff;
|
---|
| 1969 | }
|
---|
| 1970 | /* Extra padding: tag appended to record */
|
---|
| 1971 | return cctx->M;
|
---|
| 1972 |
|
---|
| 1973 | case EVP_CTRL_CCM_SET_IV_FIXED:
|
---|
| 1974 | /* Sanity check length */
|
---|
| 1975 | if (arg != EVP_CCM_TLS_FIXED_IV_LEN)
|
---|
| 1976 | return 0;
|
---|
| 1977 | /* Just copy to first part of IV */
|
---|
| 1978 | memcpy(EVP_CIPHER_CTX_iv_noconst(c), ptr, arg);
|
---|
| 1979 | return 1;
|
---|
| 1980 |
|
---|
| 1981 | case EVP_CTRL_AEAD_SET_IVLEN:
|
---|
| 1982 | arg = 15 - arg;
|
---|
| 1983 | case EVP_CTRL_CCM_SET_L:
|
---|
| 1984 | if (arg < 2 || arg > 8)
|
---|
| 1985 | return 0;
|
---|
| 1986 | cctx->L = arg;
|
---|
| 1987 | return 1;
|
---|
| 1988 |
|
---|
| 1989 | case EVP_CTRL_AEAD_SET_TAG:
|
---|
| 1990 | if ((arg & 1) || arg < 4 || arg > 16)
|
---|
| 1991 | return 0;
|
---|
| 1992 | if (EVP_CIPHER_CTX_encrypting(c) && ptr)
|
---|
| 1993 | return 0;
|
---|
| 1994 | if (ptr) {
|
---|
| 1995 | cctx->tag_set = 1;
|
---|
| 1996 | memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
|
---|
| 1997 | }
|
---|
| 1998 | cctx->M = arg;
|
---|
| 1999 | return 1;
|
---|
| 2000 |
|
---|
| 2001 | case EVP_CTRL_AEAD_GET_TAG:
|
---|
| 2002 | if (!EVP_CIPHER_CTX_encrypting(c) || !cctx->tag_set)
|
---|
| 2003 | return 0;
|
---|
| 2004 | if (!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
|
---|
| 2005 | return 0;
|
---|
| 2006 | cctx->tag_set = 0;
|
---|
| 2007 | cctx->iv_set = 0;
|
---|
| 2008 | cctx->len_set = 0;
|
---|
| 2009 | return 1;
|
---|
| 2010 |
|
---|
| 2011 | case EVP_CTRL_COPY:
|
---|
| 2012 | {
|
---|
| 2013 | EVP_CIPHER_CTX *out = ptr;
|
---|
| 2014 | EVP_AES_CCM_CTX *cctx_out = EVP_C_DATA(EVP_AES_CCM_CTX,out);
|
---|
| 2015 | if (cctx->ccm.key) {
|
---|
| 2016 | if (cctx->ccm.key != &cctx->ks)
|
---|
| 2017 | return 0;
|
---|
| 2018 | cctx_out->ccm.key = &cctx_out->ks;
|
---|
| 2019 | }
|
---|
| 2020 | return 1;
|
---|
| 2021 | }
|
---|
| 2022 |
|
---|
| 2023 | default:
|
---|
| 2024 | return -1;
|
---|
| 2025 |
|
---|
| 2026 | }
|
---|
| 2027 | }
|
---|
| 2028 |
|
---|
| 2029 | static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
---|
| 2030 | const unsigned char *iv, int enc)
|
---|
| 2031 | {
|
---|
| 2032 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx);
|
---|
| 2033 | if (!iv && !key)
|
---|
| 2034 | return 1;
|
---|
| 2035 | if (key)
|
---|
| 2036 | do {
|
---|
| 2037 | #ifdef HWAES_CAPABLE
|
---|
| 2038 | if (HWAES_CAPABLE) {
|
---|
| 2039 | HWAES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 2040 | &cctx->ks.ks);
|
---|
| 2041 |
|
---|
| 2042 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
|
---|
| 2043 | &cctx->ks, (block128_f) HWAES_encrypt);
|
---|
| 2044 | cctx->str = NULL;
|
---|
| 2045 | cctx->key_set = 1;
|
---|
| 2046 | break;
|
---|
| 2047 | } else
|
---|
| 2048 | #endif
|
---|
| 2049 | #ifdef VPAES_CAPABLE
|
---|
| 2050 | if (VPAES_CAPABLE) {
|
---|
| 2051 | vpaes_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 2052 | &cctx->ks.ks);
|
---|
| 2053 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
|
---|
| 2054 | &cctx->ks, (block128_f) vpaes_encrypt);
|
---|
| 2055 | cctx->str = NULL;
|
---|
| 2056 | cctx->key_set = 1;
|
---|
| 2057 | break;
|
---|
| 2058 | }
|
---|
| 2059 | #endif
|
---|
| 2060 | AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 2061 | &cctx->ks.ks);
|
---|
| 2062 | CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
|
---|
| 2063 | &cctx->ks, (block128_f) AES_encrypt);
|
---|
| 2064 | cctx->str = NULL;
|
---|
| 2065 | cctx->key_set = 1;
|
---|
| 2066 | } while (0);
|
---|
| 2067 | if (iv) {
|
---|
| 2068 | memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 15 - cctx->L);
|
---|
| 2069 | cctx->iv_set = 1;
|
---|
| 2070 | }
|
---|
| 2071 | return 1;
|
---|
| 2072 | }
|
---|
| 2073 |
|
---|
| 2074 | static int aes_ccm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 2075 | const unsigned char *in, size_t len)
|
---|
| 2076 | {
|
---|
| 2077 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx);
|
---|
| 2078 | CCM128_CONTEXT *ccm = &cctx->ccm;
|
---|
| 2079 | /* Encrypt/decrypt must be performed in place */
|
---|
| 2080 | if (out != in || len < (EVP_CCM_TLS_EXPLICIT_IV_LEN + (size_t)cctx->M))
|
---|
| 2081 | return -1;
|
---|
| 2082 | /* If encrypting set explicit IV from sequence number (start of AAD) */
|
---|
| 2083 | if (EVP_CIPHER_CTX_encrypting(ctx))
|
---|
| 2084 | memcpy(out, EVP_CIPHER_CTX_buf_noconst(ctx),
|
---|
| 2085 | EVP_CCM_TLS_EXPLICIT_IV_LEN);
|
---|
| 2086 | /* Get rest of IV from explicit IV */
|
---|
| 2087 | memcpy(EVP_CIPHER_CTX_iv_noconst(ctx) + EVP_CCM_TLS_FIXED_IV_LEN, in,
|
---|
| 2088 | EVP_CCM_TLS_EXPLICIT_IV_LEN);
|
---|
| 2089 | /* Correct length value */
|
---|
| 2090 | len -= EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M;
|
---|
| 2091 | if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx), 15 - cctx->L,
|
---|
| 2092 | len))
|
---|
| 2093 | return -1;
|
---|
| 2094 | /* Use saved AAD */
|
---|
| 2095 | CRYPTO_ccm128_aad(ccm, EVP_CIPHER_CTX_buf_noconst(ctx), cctx->tls_aad_len);
|
---|
| 2096 | /* Fix buffer to point to payload */
|
---|
| 2097 | in += EVP_CCM_TLS_EXPLICIT_IV_LEN;
|
---|
| 2098 | out += EVP_CCM_TLS_EXPLICIT_IV_LEN;
|
---|
| 2099 | if (EVP_CIPHER_CTX_encrypting(ctx)) {
|
---|
| 2100 | if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
|
---|
| 2101 | cctx->str) :
|
---|
| 2102 | CRYPTO_ccm128_encrypt(ccm, in, out, len))
|
---|
| 2103 | return -1;
|
---|
| 2104 | if (!CRYPTO_ccm128_tag(ccm, out + len, cctx->M))
|
---|
| 2105 | return -1;
|
---|
| 2106 | return len + EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M;
|
---|
| 2107 | } else {
|
---|
| 2108 | if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
|
---|
| 2109 | cctx->str) :
|
---|
| 2110 | !CRYPTO_ccm128_decrypt(ccm, in, out, len)) {
|
---|
| 2111 | unsigned char tag[16];
|
---|
| 2112 | if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) {
|
---|
| 2113 | if (!CRYPTO_memcmp(tag, in + len, cctx->M))
|
---|
| 2114 | return len;
|
---|
| 2115 | }
|
---|
| 2116 | }
|
---|
| 2117 | OPENSSL_cleanse(out, len);
|
---|
| 2118 | return -1;
|
---|
| 2119 | }
|
---|
| 2120 | }
|
---|
| 2121 |
|
---|
| 2122 | static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 2123 | const unsigned char *in, size_t len)
|
---|
| 2124 | {
|
---|
| 2125 | EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx);
|
---|
| 2126 | CCM128_CONTEXT *ccm = &cctx->ccm;
|
---|
| 2127 | /* If not set up, return error */
|
---|
| 2128 | if (!cctx->key_set)
|
---|
| 2129 | return -1;
|
---|
| 2130 |
|
---|
| 2131 | if (cctx->tls_aad_len >= 0)
|
---|
| 2132 | return aes_ccm_tls_cipher(ctx, out, in, len);
|
---|
| 2133 |
|
---|
| 2134 | if (!cctx->iv_set)
|
---|
| 2135 | return -1;
|
---|
| 2136 |
|
---|
| 2137 | if (!EVP_CIPHER_CTX_encrypting(ctx) && !cctx->tag_set)
|
---|
| 2138 | return -1;
|
---|
| 2139 | if (!out) {
|
---|
| 2140 | if (!in) {
|
---|
| 2141 | if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx),
|
---|
| 2142 | 15 - cctx->L, len))
|
---|
| 2143 | return -1;
|
---|
| 2144 | cctx->len_set = 1;
|
---|
| 2145 | return len;
|
---|
| 2146 | }
|
---|
| 2147 | /* If have AAD need message length */
|
---|
| 2148 | if (!cctx->len_set && len)
|
---|
| 2149 | return -1;
|
---|
| 2150 | CRYPTO_ccm128_aad(ccm, in, len);
|
---|
| 2151 | return len;
|
---|
| 2152 | }
|
---|
| 2153 | /* EVP_*Final() doesn't return any data */
|
---|
| 2154 | if (!in)
|
---|
| 2155 | return 0;
|
---|
| 2156 | /* If not set length yet do it */
|
---|
| 2157 | if (!cctx->len_set) {
|
---|
| 2158 | if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx),
|
---|
| 2159 | 15 - cctx->L, len))
|
---|
| 2160 | return -1;
|
---|
| 2161 | cctx->len_set = 1;
|
---|
| 2162 | }
|
---|
| 2163 | if (EVP_CIPHER_CTX_encrypting(ctx)) {
|
---|
| 2164 | if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
|
---|
| 2165 | cctx->str) :
|
---|
| 2166 | CRYPTO_ccm128_encrypt(ccm, in, out, len))
|
---|
| 2167 | return -1;
|
---|
| 2168 | cctx->tag_set = 1;
|
---|
| 2169 | return len;
|
---|
| 2170 | } else {
|
---|
| 2171 | int rv = -1;
|
---|
| 2172 | if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
|
---|
| 2173 | cctx->str) :
|
---|
| 2174 | !CRYPTO_ccm128_decrypt(ccm, in, out, len)) {
|
---|
| 2175 | unsigned char tag[16];
|
---|
| 2176 | if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) {
|
---|
| 2177 | if (!CRYPTO_memcmp(tag, EVP_CIPHER_CTX_buf_noconst(ctx),
|
---|
| 2178 | cctx->M))
|
---|
| 2179 | rv = len;
|
---|
| 2180 | }
|
---|
| 2181 | }
|
---|
| 2182 | if (rv == -1)
|
---|
| 2183 | OPENSSL_cleanse(out, len);
|
---|
| 2184 | cctx->iv_set = 0;
|
---|
| 2185 | cctx->tag_set = 0;
|
---|
| 2186 | cctx->len_set = 0;
|
---|
| 2187 | return rv;
|
---|
| 2188 | }
|
---|
| 2189 | }
|
---|
| 2190 |
|
---|
| 2191 | #define aes_ccm_cleanup NULL
|
---|
| 2192 |
|
---|
| 2193 | BLOCK_CIPHER_custom(NID_aes, 128, 1, 12, ccm, CCM,
|
---|
| 2194 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
|
---|
| 2195 | BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, ccm, CCM,
|
---|
| 2196 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
|
---|
| 2197 | BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, ccm, CCM,
|
---|
| 2198 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
|
---|
| 2199 |
|
---|
| 2200 | typedef struct {
|
---|
| 2201 | union {
|
---|
| 2202 | double align;
|
---|
| 2203 | AES_KEY ks;
|
---|
| 2204 | } ks;
|
---|
| 2205 | /* Indicates if IV has been set */
|
---|
| 2206 | unsigned char *iv;
|
---|
| 2207 | } EVP_AES_WRAP_CTX;
|
---|
| 2208 |
|
---|
| 2209 | static int aes_wrap_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
---|
| 2210 | const unsigned char *iv, int enc)
|
---|
| 2211 | {
|
---|
| 2212 | EVP_AES_WRAP_CTX *wctx = EVP_C_DATA(EVP_AES_WRAP_CTX,ctx);
|
---|
| 2213 | if (!iv && !key)
|
---|
| 2214 | return 1;
|
---|
| 2215 | if (key) {
|
---|
| 2216 | if (EVP_CIPHER_CTX_encrypting(ctx))
|
---|
| 2217 | AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 2218 | &wctx->ks.ks);
|
---|
| 2219 | else
|
---|
| 2220 | AES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 2221 | &wctx->ks.ks);
|
---|
| 2222 | if (!iv)
|
---|
| 2223 | wctx->iv = NULL;
|
---|
| 2224 | }
|
---|
| 2225 | if (iv) {
|
---|
| 2226 | memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, EVP_CIPHER_CTX_iv_length(ctx));
|
---|
| 2227 | wctx->iv = EVP_CIPHER_CTX_iv_noconst(ctx);
|
---|
| 2228 | }
|
---|
| 2229 | return 1;
|
---|
| 2230 | }
|
---|
| 2231 |
|
---|
| 2232 | static int aes_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 2233 | const unsigned char *in, size_t inlen)
|
---|
| 2234 | {
|
---|
| 2235 | EVP_AES_WRAP_CTX *wctx = EVP_C_DATA(EVP_AES_WRAP_CTX,ctx);
|
---|
| 2236 | size_t rv;
|
---|
| 2237 | /* AES wrap with padding has IV length of 4, without padding 8 */
|
---|
| 2238 | int pad = EVP_CIPHER_CTX_iv_length(ctx) == 4;
|
---|
| 2239 | /* No final operation so always return zero length */
|
---|
| 2240 | if (!in)
|
---|
| 2241 | return 0;
|
---|
| 2242 | /* Input length must always be non-zero */
|
---|
| 2243 | if (!inlen)
|
---|
| 2244 | return -1;
|
---|
| 2245 | /* If decrypting need at least 16 bytes and multiple of 8 */
|
---|
| 2246 | if (!EVP_CIPHER_CTX_encrypting(ctx) && (inlen < 16 || inlen & 0x7))
|
---|
| 2247 | return -1;
|
---|
| 2248 | /* If not padding input must be multiple of 8 */
|
---|
| 2249 | if (!pad && inlen & 0x7)
|
---|
| 2250 | return -1;
|
---|
| 2251 | if (is_partially_overlapping(out, in, inlen)) {
|
---|
| 2252 | EVPerr(EVP_F_AES_WRAP_CIPHER, EVP_R_PARTIALLY_OVERLAPPING);
|
---|
| 2253 | return 0;
|
---|
| 2254 | }
|
---|
| 2255 | if (!out) {
|
---|
| 2256 | if (EVP_CIPHER_CTX_encrypting(ctx)) {
|
---|
| 2257 | /* If padding round up to multiple of 8 */
|
---|
| 2258 | if (pad)
|
---|
| 2259 | inlen = (inlen + 7) / 8 * 8;
|
---|
| 2260 | /* 8 byte prefix */
|
---|
| 2261 | return inlen + 8;
|
---|
| 2262 | } else {
|
---|
| 2263 | /*
|
---|
| 2264 | * If not padding output will be exactly 8 bytes smaller than
|
---|
| 2265 | * input. If padding it will be at least 8 bytes smaller but we
|
---|
| 2266 | * don't know how much.
|
---|
| 2267 | */
|
---|
| 2268 | return inlen - 8;
|
---|
| 2269 | }
|
---|
| 2270 | }
|
---|
| 2271 | if (pad) {
|
---|
| 2272 | if (EVP_CIPHER_CTX_encrypting(ctx))
|
---|
| 2273 | rv = CRYPTO_128_wrap_pad(&wctx->ks.ks, wctx->iv,
|
---|
| 2274 | out, in, inlen,
|
---|
| 2275 | (block128_f) AES_encrypt);
|
---|
| 2276 | else
|
---|
| 2277 | rv = CRYPTO_128_unwrap_pad(&wctx->ks.ks, wctx->iv,
|
---|
| 2278 | out, in, inlen,
|
---|
| 2279 | (block128_f) AES_decrypt);
|
---|
| 2280 | } else {
|
---|
| 2281 | if (EVP_CIPHER_CTX_encrypting(ctx))
|
---|
| 2282 | rv = CRYPTO_128_wrap(&wctx->ks.ks, wctx->iv,
|
---|
| 2283 | out, in, inlen, (block128_f) AES_encrypt);
|
---|
| 2284 | else
|
---|
| 2285 | rv = CRYPTO_128_unwrap(&wctx->ks.ks, wctx->iv,
|
---|
| 2286 | out, in, inlen, (block128_f) AES_decrypt);
|
---|
| 2287 | }
|
---|
| 2288 | return rv ? (int)rv : -1;
|
---|
| 2289 | }
|
---|
| 2290 |
|
---|
| 2291 | #define WRAP_FLAGS (EVP_CIPH_WRAP_MODE \
|
---|
| 2292 | | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
|
---|
| 2293 | | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_FLAG_DEFAULT_ASN1)
|
---|
| 2294 |
|
---|
| 2295 | static const EVP_CIPHER aes_128_wrap = {
|
---|
| 2296 | NID_id_aes128_wrap,
|
---|
| 2297 | 8, 16, 8, WRAP_FLAGS,
|
---|
| 2298 | aes_wrap_init_key, aes_wrap_cipher,
|
---|
| 2299 | NULL,
|
---|
| 2300 | sizeof(EVP_AES_WRAP_CTX),
|
---|
| 2301 | NULL, NULL, NULL, NULL
|
---|
| 2302 | };
|
---|
| 2303 |
|
---|
| 2304 | const EVP_CIPHER *EVP_aes_128_wrap(void)
|
---|
| 2305 | {
|
---|
| 2306 | return &aes_128_wrap;
|
---|
| 2307 | }
|
---|
| 2308 |
|
---|
| 2309 | static const EVP_CIPHER aes_192_wrap = {
|
---|
| 2310 | NID_id_aes192_wrap,
|
---|
| 2311 | 8, 24, 8, WRAP_FLAGS,
|
---|
| 2312 | aes_wrap_init_key, aes_wrap_cipher,
|
---|
| 2313 | NULL,
|
---|
| 2314 | sizeof(EVP_AES_WRAP_CTX),
|
---|
| 2315 | NULL, NULL, NULL, NULL
|
---|
| 2316 | };
|
---|
| 2317 |
|
---|
| 2318 | const EVP_CIPHER *EVP_aes_192_wrap(void)
|
---|
| 2319 | {
|
---|
| 2320 | return &aes_192_wrap;
|
---|
| 2321 | }
|
---|
| 2322 |
|
---|
| 2323 | static const EVP_CIPHER aes_256_wrap = {
|
---|
| 2324 | NID_id_aes256_wrap,
|
---|
| 2325 | 8, 32, 8, WRAP_FLAGS,
|
---|
| 2326 | aes_wrap_init_key, aes_wrap_cipher,
|
---|
| 2327 | NULL,
|
---|
| 2328 | sizeof(EVP_AES_WRAP_CTX),
|
---|
| 2329 | NULL, NULL, NULL, NULL
|
---|
| 2330 | };
|
---|
| 2331 |
|
---|
| 2332 | const EVP_CIPHER *EVP_aes_256_wrap(void)
|
---|
| 2333 | {
|
---|
| 2334 | return &aes_256_wrap;
|
---|
| 2335 | }
|
---|
| 2336 |
|
---|
| 2337 | static const EVP_CIPHER aes_128_wrap_pad = {
|
---|
| 2338 | NID_id_aes128_wrap_pad,
|
---|
| 2339 | 8, 16, 4, WRAP_FLAGS,
|
---|
| 2340 | aes_wrap_init_key, aes_wrap_cipher,
|
---|
| 2341 | NULL,
|
---|
| 2342 | sizeof(EVP_AES_WRAP_CTX),
|
---|
| 2343 | NULL, NULL, NULL, NULL
|
---|
| 2344 | };
|
---|
| 2345 |
|
---|
| 2346 | const EVP_CIPHER *EVP_aes_128_wrap_pad(void)
|
---|
| 2347 | {
|
---|
| 2348 | return &aes_128_wrap_pad;
|
---|
| 2349 | }
|
---|
| 2350 |
|
---|
| 2351 | static const EVP_CIPHER aes_192_wrap_pad = {
|
---|
| 2352 | NID_id_aes192_wrap_pad,
|
---|
| 2353 | 8, 24, 4, WRAP_FLAGS,
|
---|
| 2354 | aes_wrap_init_key, aes_wrap_cipher,
|
---|
| 2355 | NULL,
|
---|
| 2356 | sizeof(EVP_AES_WRAP_CTX),
|
---|
| 2357 | NULL, NULL, NULL, NULL
|
---|
| 2358 | };
|
---|
| 2359 |
|
---|
| 2360 | const EVP_CIPHER *EVP_aes_192_wrap_pad(void)
|
---|
| 2361 | {
|
---|
| 2362 | return &aes_192_wrap_pad;
|
---|
| 2363 | }
|
---|
| 2364 |
|
---|
| 2365 | static const EVP_CIPHER aes_256_wrap_pad = {
|
---|
| 2366 | NID_id_aes256_wrap_pad,
|
---|
| 2367 | 8, 32, 4, WRAP_FLAGS,
|
---|
| 2368 | aes_wrap_init_key, aes_wrap_cipher,
|
---|
| 2369 | NULL,
|
---|
| 2370 | sizeof(EVP_AES_WRAP_CTX),
|
---|
| 2371 | NULL, NULL, NULL, NULL
|
---|
| 2372 | };
|
---|
| 2373 |
|
---|
| 2374 | const EVP_CIPHER *EVP_aes_256_wrap_pad(void)
|
---|
| 2375 | {
|
---|
| 2376 | return &aes_256_wrap_pad;
|
---|
| 2377 | }
|
---|
| 2378 |
|
---|
| 2379 | #ifndef OPENSSL_NO_OCB
|
---|
| 2380 | static int aes_ocb_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
|
---|
| 2381 | {
|
---|
| 2382 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,c);
|
---|
| 2383 | EVP_CIPHER_CTX *newc;
|
---|
| 2384 | EVP_AES_OCB_CTX *new_octx;
|
---|
| 2385 |
|
---|
| 2386 | switch (type) {
|
---|
| 2387 | case EVP_CTRL_INIT:
|
---|
| 2388 | octx->key_set = 0;
|
---|
| 2389 | octx->iv_set = 0;
|
---|
| 2390 | octx->ivlen = EVP_CIPHER_CTX_iv_length(c);
|
---|
| 2391 | octx->iv = EVP_CIPHER_CTX_iv_noconst(c);
|
---|
| 2392 | octx->taglen = 16;
|
---|
| 2393 | octx->data_buf_len = 0;
|
---|
| 2394 | octx->aad_buf_len = 0;
|
---|
| 2395 | return 1;
|
---|
| 2396 |
|
---|
| 2397 | case EVP_CTRL_AEAD_SET_IVLEN:
|
---|
| 2398 | /* IV len must be 1 to 15 */
|
---|
| 2399 | if (arg <= 0 || arg > 15)
|
---|
| 2400 | return 0;
|
---|
| 2401 |
|
---|
| 2402 | octx->ivlen = arg;
|
---|
| 2403 | return 1;
|
---|
| 2404 |
|
---|
| 2405 | case EVP_CTRL_AEAD_SET_TAG:
|
---|
| 2406 | if (!ptr) {
|
---|
| 2407 | /* Tag len must be 0 to 16 */
|
---|
| 2408 | if (arg < 0 || arg > 16)
|
---|
| 2409 | return 0;
|
---|
| 2410 |
|
---|
| 2411 | octx->taglen = arg;
|
---|
| 2412 | return 1;
|
---|
| 2413 | }
|
---|
| 2414 | if (arg != octx->taglen || EVP_CIPHER_CTX_encrypting(c))
|
---|
| 2415 | return 0;
|
---|
| 2416 | memcpy(octx->tag, ptr, arg);
|
---|
| 2417 | return 1;
|
---|
| 2418 |
|
---|
| 2419 | case EVP_CTRL_AEAD_GET_TAG:
|
---|
| 2420 | if (arg != octx->taglen || !EVP_CIPHER_CTX_encrypting(c))
|
---|
| 2421 | return 0;
|
---|
| 2422 |
|
---|
| 2423 | memcpy(ptr, octx->tag, arg);
|
---|
| 2424 | return 1;
|
---|
| 2425 |
|
---|
| 2426 | case EVP_CTRL_COPY:
|
---|
| 2427 | newc = (EVP_CIPHER_CTX *)ptr;
|
---|
| 2428 | new_octx = EVP_C_DATA(EVP_AES_OCB_CTX,newc);
|
---|
| 2429 | return CRYPTO_ocb128_copy_ctx(&new_octx->ocb, &octx->ocb,
|
---|
| 2430 | &new_octx->ksenc.ks,
|
---|
| 2431 | &new_octx->ksdec.ks);
|
---|
| 2432 |
|
---|
| 2433 | default:
|
---|
| 2434 | return -1;
|
---|
| 2435 |
|
---|
| 2436 | }
|
---|
| 2437 | }
|
---|
| 2438 |
|
---|
| 2439 | # ifdef HWAES_CAPABLE
|
---|
| 2440 | # ifdef HWAES_ocb_encrypt
|
---|
| 2441 | void HWAES_ocb_encrypt(const unsigned char *in, unsigned char *out,
|
---|
| 2442 | size_t blocks, const void *key,
|
---|
| 2443 | size_t start_block_num,
|
---|
| 2444 | unsigned char offset_i[16],
|
---|
| 2445 | const unsigned char L_[][16],
|
---|
| 2446 | unsigned char checksum[16]);
|
---|
| 2447 | # else
|
---|
| 2448 | # define HWAES_ocb_encrypt ((ocb128_f)NULL)
|
---|
| 2449 | # endif
|
---|
| 2450 | # ifdef HWAES_ocb_decrypt
|
---|
| 2451 | void HWAES_ocb_decrypt(const unsigned char *in, unsigned char *out,
|
---|
| 2452 | size_t blocks, const void *key,
|
---|
| 2453 | size_t start_block_num,
|
---|
| 2454 | unsigned char offset_i[16],
|
---|
| 2455 | const unsigned char L_[][16],
|
---|
| 2456 | unsigned char checksum[16]);
|
---|
| 2457 | # else
|
---|
| 2458 | # define HWAES_ocb_decrypt ((ocb128_f)NULL)
|
---|
| 2459 | # endif
|
---|
| 2460 | # endif
|
---|
| 2461 |
|
---|
| 2462 | static int aes_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
---|
| 2463 | const unsigned char *iv, int enc)
|
---|
| 2464 | {
|
---|
| 2465 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx);
|
---|
| 2466 | if (!iv && !key)
|
---|
| 2467 | return 1;
|
---|
| 2468 | if (key) {
|
---|
| 2469 | do {
|
---|
| 2470 | /*
|
---|
| 2471 | * We set both the encrypt and decrypt key here because decrypt
|
---|
| 2472 | * needs both. We could possibly optimise to remove setting the
|
---|
| 2473 | * decrypt for an encryption operation.
|
---|
| 2474 | */
|
---|
| 2475 | # ifdef HWAES_CAPABLE
|
---|
| 2476 | if (HWAES_CAPABLE) {
|
---|
| 2477 | HWAES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 2478 | &octx->ksenc.ks);
|
---|
| 2479 | HWAES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 2480 | &octx->ksdec.ks);
|
---|
| 2481 | if (!CRYPTO_ocb128_init(&octx->ocb,
|
---|
| 2482 | &octx->ksenc.ks, &octx->ksdec.ks,
|
---|
| 2483 | (block128_f) HWAES_encrypt,
|
---|
| 2484 | (block128_f) HWAES_decrypt,
|
---|
| 2485 | enc ? HWAES_ocb_encrypt
|
---|
| 2486 | : HWAES_ocb_decrypt))
|
---|
| 2487 | return 0;
|
---|
| 2488 | break;
|
---|
| 2489 | }
|
---|
| 2490 | # endif
|
---|
| 2491 | # ifdef VPAES_CAPABLE
|
---|
| 2492 | if (VPAES_CAPABLE) {
|
---|
| 2493 | vpaes_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 2494 | &octx->ksenc.ks);
|
---|
| 2495 | vpaes_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 2496 | &octx->ksdec.ks);
|
---|
| 2497 | if (!CRYPTO_ocb128_init(&octx->ocb,
|
---|
| 2498 | &octx->ksenc.ks, &octx->ksdec.ks,
|
---|
| 2499 | (block128_f) vpaes_encrypt,
|
---|
| 2500 | (block128_f) vpaes_decrypt,
|
---|
| 2501 | NULL))
|
---|
| 2502 | return 0;
|
---|
| 2503 | break;
|
---|
| 2504 | }
|
---|
| 2505 | # endif
|
---|
| 2506 | AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 2507 | &octx->ksenc.ks);
|
---|
| 2508 | AES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
|
---|
| 2509 | &octx->ksdec.ks);
|
---|
| 2510 | if (!CRYPTO_ocb128_init(&octx->ocb,
|
---|
| 2511 | &octx->ksenc.ks, &octx->ksdec.ks,
|
---|
| 2512 | (block128_f) AES_encrypt,
|
---|
| 2513 | (block128_f) AES_decrypt,
|
---|
| 2514 | NULL))
|
---|
| 2515 | return 0;
|
---|
| 2516 | }
|
---|
| 2517 | while (0);
|
---|
| 2518 |
|
---|
| 2519 | /*
|
---|
| 2520 | * If we have an iv we can set it directly, otherwise use saved IV.
|
---|
| 2521 | */
|
---|
| 2522 | if (iv == NULL && octx->iv_set)
|
---|
| 2523 | iv = octx->iv;
|
---|
| 2524 | if (iv) {
|
---|
| 2525 | if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen)
|
---|
| 2526 | != 1)
|
---|
| 2527 | return 0;
|
---|
| 2528 | octx->iv_set = 1;
|
---|
| 2529 | }
|
---|
| 2530 | octx->key_set = 1;
|
---|
| 2531 | } else {
|
---|
| 2532 | /* If key set use IV, otherwise copy */
|
---|
| 2533 | if (octx->key_set)
|
---|
| 2534 | CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen);
|
---|
| 2535 | else
|
---|
| 2536 | memcpy(octx->iv, iv, octx->ivlen);
|
---|
| 2537 | octx->iv_set = 1;
|
---|
| 2538 | }
|
---|
| 2539 | return 1;
|
---|
| 2540 | }
|
---|
| 2541 |
|
---|
| 2542 | static int aes_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 2543 | const unsigned char *in, size_t len)
|
---|
| 2544 | {
|
---|
| 2545 | unsigned char *buf;
|
---|
| 2546 | int *buf_len;
|
---|
| 2547 | int written_len = 0;
|
---|
| 2548 | size_t trailing_len;
|
---|
| 2549 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx);
|
---|
| 2550 |
|
---|
| 2551 | /* If IV or Key not set then return error */
|
---|
| 2552 | if (!octx->iv_set)
|
---|
| 2553 | return -1;
|
---|
| 2554 |
|
---|
| 2555 | if (!octx->key_set)
|
---|
| 2556 | return -1;
|
---|
| 2557 |
|
---|
| 2558 | if (in != NULL) {
|
---|
| 2559 | /*
|
---|
| 2560 | * Need to ensure we are only passing full blocks to low level OCB
|
---|
| 2561 | * routines. We do it here rather than in EVP_EncryptUpdate/
|
---|
| 2562 | * EVP_DecryptUpdate because we need to pass full blocks of AAD too
|
---|
| 2563 | * and those routines don't support that
|
---|
| 2564 | */
|
---|
| 2565 |
|
---|
| 2566 | /* Are we dealing with AAD or normal data here? */
|
---|
| 2567 | if (out == NULL) {
|
---|
| 2568 | buf = octx->aad_buf;
|
---|
| 2569 | buf_len = &(octx->aad_buf_len);
|
---|
| 2570 | } else {
|
---|
| 2571 | buf = octx->data_buf;
|
---|
| 2572 | buf_len = &(octx->data_buf_len);
|
---|
| 2573 |
|
---|
| 2574 | if (is_partially_overlapping(out + *buf_len, in, len)) {
|
---|
| 2575 | EVPerr(EVP_F_AES_OCB_CIPHER, EVP_R_PARTIALLY_OVERLAPPING);
|
---|
| 2576 | return 0;
|
---|
| 2577 | }
|
---|
| 2578 | }
|
---|
| 2579 |
|
---|
| 2580 | /*
|
---|
| 2581 | * If we've got a partially filled buffer from a previous call then
|
---|
| 2582 | * use that data first
|
---|
| 2583 | */
|
---|
| 2584 | if (*buf_len > 0) {
|
---|
| 2585 | unsigned int remaining;
|
---|
| 2586 |
|
---|
| 2587 | remaining = AES_BLOCK_SIZE - (*buf_len);
|
---|
| 2588 | if (remaining > len) {
|
---|
| 2589 | memcpy(buf + (*buf_len), in, len);
|
---|
| 2590 | *(buf_len) += len;
|
---|
| 2591 | return 0;
|
---|
| 2592 | }
|
---|
| 2593 | memcpy(buf + (*buf_len), in, remaining);
|
---|
| 2594 |
|
---|
| 2595 | /*
|
---|
| 2596 | * If we get here we've filled the buffer, so process it
|
---|
| 2597 | */
|
---|
| 2598 | len -= remaining;
|
---|
| 2599 | in += remaining;
|
---|
| 2600 | if (out == NULL) {
|
---|
| 2601 | if (!CRYPTO_ocb128_aad(&octx->ocb, buf, AES_BLOCK_SIZE))
|
---|
| 2602 | return -1;
|
---|
| 2603 | } else if (EVP_CIPHER_CTX_encrypting(ctx)) {
|
---|
| 2604 | if (!CRYPTO_ocb128_encrypt(&octx->ocb, buf, out,
|
---|
| 2605 | AES_BLOCK_SIZE))
|
---|
| 2606 | return -1;
|
---|
| 2607 | } else {
|
---|
| 2608 | if (!CRYPTO_ocb128_decrypt(&octx->ocb, buf, out,
|
---|
| 2609 | AES_BLOCK_SIZE))
|
---|
| 2610 | return -1;
|
---|
| 2611 | }
|
---|
| 2612 | written_len = AES_BLOCK_SIZE;
|
---|
| 2613 | *buf_len = 0;
|
---|
| 2614 | if (out != NULL)
|
---|
| 2615 | out += AES_BLOCK_SIZE;
|
---|
| 2616 | }
|
---|
| 2617 |
|
---|
| 2618 | /* Do we have a partial block to handle at the end? */
|
---|
| 2619 | trailing_len = len % AES_BLOCK_SIZE;
|
---|
| 2620 |
|
---|
| 2621 | /*
|
---|
| 2622 | * If we've got some full blocks to handle, then process these first
|
---|
| 2623 | */
|
---|
| 2624 | if (len != trailing_len) {
|
---|
| 2625 | if (out == NULL) {
|
---|
| 2626 | if (!CRYPTO_ocb128_aad(&octx->ocb, in, len - trailing_len))
|
---|
| 2627 | return -1;
|
---|
| 2628 | } else if (EVP_CIPHER_CTX_encrypting(ctx)) {
|
---|
| 2629 | if (!CRYPTO_ocb128_encrypt
|
---|
| 2630 | (&octx->ocb, in, out, len - trailing_len))
|
---|
| 2631 | return -1;
|
---|
| 2632 | } else {
|
---|
| 2633 | if (!CRYPTO_ocb128_decrypt
|
---|
| 2634 | (&octx->ocb, in, out, len - trailing_len))
|
---|
| 2635 | return -1;
|
---|
| 2636 | }
|
---|
| 2637 | written_len += len - trailing_len;
|
---|
| 2638 | in += len - trailing_len;
|
---|
| 2639 | }
|
---|
| 2640 |
|
---|
| 2641 | /* Handle any trailing partial block */
|
---|
| 2642 | if (trailing_len > 0) {
|
---|
| 2643 | memcpy(buf, in, trailing_len);
|
---|
| 2644 | *buf_len = trailing_len;
|
---|
| 2645 | }
|
---|
| 2646 |
|
---|
| 2647 | return written_len;
|
---|
| 2648 | } else {
|
---|
| 2649 | /*
|
---|
| 2650 | * First of all empty the buffer of any partial block that we might
|
---|
| 2651 | * have been provided - both for data and AAD
|
---|
| 2652 | */
|
---|
| 2653 | if (octx->data_buf_len > 0) {
|
---|
| 2654 | if (EVP_CIPHER_CTX_encrypting(ctx)) {
|
---|
| 2655 | if (!CRYPTO_ocb128_encrypt(&octx->ocb, octx->data_buf, out,
|
---|
| 2656 | octx->data_buf_len))
|
---|
| 2657 | return -1;
|
---|
| 2658 | } else {
|
---|
| 2659 | if (!CRYPTO_ocb128_decrypt(&octx->ocb, octx->data_buf, out,
|
---|
| 2660 | octx->data_buf_len))
|
---|
| 2661 | return -1;
|
---|
| 2662 | }
|
---|
| 2663 | written_len = octx->data_buf_len;
|
---|
| 2664 | octx->data_buf_len = 0;
|
---|
| 2665 | }
|
---|
| 2666 | if (octx->aad_buf_len > 0) {
|
---|
| 2667 | if (!CRYPTO_ocb128_aad
|
---|
| 2668 | (&octx->ocb, octx->aad_buf, octx->aad_buf_len))
|
---|
| 2669 | return -1;
|
---|
| 2670 | octx->aad_buf_len = 0;
|
---|
| 2671 | }
|
---|
| 2672 | /* If decrypting then verify */
|
---|
| 2673 | if (!EVP_CIPHER_CTX_encrypting(ctx)) {
|
---|
| 2674 | if (octx->taglen < 0)
|
---|
| 2675 | return -1;
|
---|
| 2676 | if (CRYPTO_ocb128_finish(&octx->ocb,
|
---|
| 2677 | octx->tag, octx->taglen) != 0)
|
---|
| 2678 | return -1;
|
---|
| 2679 | octx->iv_set = 0;
|
---|
| 2680 | return written_len;
|
---|
| 2681 | }
|
---|
| 2682 | /* If encrypting then just get the tag */
|
---|
| 2683 | if (CRYPTO_ocb128_tag(&octx->ocb, octx->tag, 16) != 1)
|
---|
| 2684 | return -1;
|
---|
| 2685 | /* Don't reuse the IV */
|
---|
| 2686 | octx->iv_set = 0;
|
---|
| 2687 | return written_len;
|
---|
| 2688 | }
|
---|
| 2689 | }
|
---|
| 2690 |
|
---|
| 2691 | static int aes_ocb_cleanup(EVP_CIPHER_CTX *c)
|
---|
| 2692 | {
|
---|
| 2693 | EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,c);
|
---|
| 2694 | CRYPTO_ocb128_cleanup(&octx->ocb);
|
---|
| 2695 | return 1;
|
---|
| 2696 | }
|
---|
| 2697 |
|
---|
| 2698 | BLOCK_CIPHER_custom(NID_aes, 128, 16, 12, ocb, OCB,
|
---|
| 2699 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
|
---|
| 2700 | BLOCK_CIPHER_custom(NID_aes, 192, 16, 12, ocb, OCB,
|
---|
| 2701 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
|
---|
| 2702 | BLOCK_CIPHER_custom(NID_aes, 256, 16, 12, ocb, OCB,
|
---|
| 2703 | EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
|
---|
| 2704 | #endif /* OPENSSL_NO_OCB */
|
---|