| 1 | /* rsa.h
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| 2 | *
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| 3 | * Copyright (C) 2006-2020 wolfSSL Inc.
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| 4 | *
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| 5 | * This file is part of wolfSSL.
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| 6 | *
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| 7 | * wolfSSL is free software; you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation; either version 2 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * wolfSSL is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with this program; if not, write to the Free Software
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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| 20 | */
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| 21 |
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| 22 | /*!
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| 23 | \file wolfssl/wolfcrypt/rsa.h
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| 24 | */
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| 25 |
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| 26 |
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| 27 | #ifndef WOLF_CRYPT_RSA_H
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| 28 | #define WOLF_CRYPT_RSA_H
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| 29 |
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| 30 | #include <wolfssl/wolfcrypt/types.h>
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| 31 |
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| 32 | #ifndef NO_RSA
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| 33 |
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| 34 |
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| 35 | /* RSA default exponent */
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| 36 | #ifndef WC_RSA_EXPONENT
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| 37 | #define WC_RSA_EXPONENT 65537L
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| 38 | #endif
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| 39 |
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| 40 | #if defined(WC_RSA_NONBLOCK)
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| 41 | /* enable support for fast math based non-blocking exptmod */
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| 42 | /* this splits the RSA function into many smaller operations */
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| 43 | #ifndef USE_FAST_MATH
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| 44 | #error RSA non-blocking mode only supported using fast math
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| 45 | #endif
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| 46 | #ifndef TFM_TIMING_RESISTANT
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| 47 | #error RSA non-blocking mode only supported with timing resistance enabled
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| 48 | #endif
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| 49 |
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| 50 | /* RSA bounds check is not supported with RSA non-blocking mode */
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| 51 | #undef NO_RSA_BOUNDS_CHECK
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| 52 | #define NO_RSA_BOUNDS_CHECK
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| 53 | #endif
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| 54 |
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| 55 | /* allow for user to plug in own crypto */
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| 56 | #if !defined(HAVE_FIPS) && (defined(HAVE_USER_RSA) || defined(HAVE_FAST_RSA))
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| 57 | #include "user_rsa.h"
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| 58 | #else
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| 59 |
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| 60 | #if defined(HAVE_FIPS) && \
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| 61 | (!defined(HAVE_FIPS_VERSION) || (HAVE_FIPS_VERSION < 2))
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| 62 | /* for fips @wc_fips */
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| 63 | #include <cyassl/ctaocrypt/rsa.h>
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| 64 | #if defined(CYASSL_KEY_GEN) && !defined(WOLFSSL_KEY_GEN)
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| 65 | #define WOLFSSL_KEY_GEN
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| 66 | #endif
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| 67 | #else
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| 68 | #include <wolfssl/wolfcrypt/integer.h>
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| 69 | #include <wolfssl/wolfcrypt/random.h>
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| 70 | #endif /* HAVE_FIPS && HAVE_FIPS_VERION 1 */
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| 71 | #if defined(HAVE_FIPS) && \
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| 72 | defined(HAVE_FIPS_VERSION) && (HAVE_FIPS_VERSION >= 2)
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| 73 | #include <wolfssl/wolfcrypt/fips.h>
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| 74 | #endif
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| 75 |
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| 76 | /* header file needed for OAEP padding */
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| 77 | #include <wolfssl/wolfcrypt/hash.h>
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| 78 |
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| 79 | #ifdef WOLFSSL_XILINX_CRYPT
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| 80 | #include "xsecure_rsa.h"
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| 81 | #endif
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| 82 |
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| 83 | #if defined(WOLFSSL_CRYPTOCELL)
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| 84 | #include <wolfssl/wolfcrypt/port/arm/cryptoCell.h>
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| 85 | #endif
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| 86 |
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| 87 | #ifdef __cplusplus
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| 88 | extern "C" {
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| 89 | #endif
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| 90 |
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| 91 | enum {
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| 92 | RSA_MIN_SIZE = 512,
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| 93 | RSA_MAX_SIZE = 4096,
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| 94 | };
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| 95 |
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| 96 | /* avoid redefinition of structs */
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| 97 | #if !defined(HAVE_FIPS) || \
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| 98 | (defined(HAVE_FIPS_VERSION) && (HAVE_FIPS_VERSION >= 2))
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| 99 |
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| 100 | #ifdef WOLFSSL_ASYNC_CRYPT
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| 101 | #include <wolfssl/wolfcrypt/async.h>
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| 102 | #ifdef WOLFSSL_CERT_GEN
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| 103 | #include <wolfssl/wolfcrypt/asn.h>
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| 104 | #endif
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| 105 | #endif
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| 106 |
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| 107 | enum {
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| 108 | RSA_PUBLIC = 0,
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| 109 | RSA_PRIVATE = 1,
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| 110 |
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| 111 | RSA_TYPE_UNKNOWN = -1,
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| 112 | RSA_PUBLIC_ENCRYPT = 0,
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| 113 | RSA_PUBLIC_DECRYPT = 1,
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| 114 | RSA_PRIVATE_ENCRYPT = 2,
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| 115 | RSA_PRIVATE_DECRYPT = 3,
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| 116 |
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| 117 | RSA_BLOCK_TYPE_1 = 1,
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| 118 | RSA_BLOCK_TYPE_2 = 2,
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| 119 |
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| 120 | RSA_MIN_PAD_SZ = 11, /* separator + 0 + pad value + 8 pads */
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| 121 |
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| 122 | RSA_PSS_PAD_SZ = 8,
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| 123 | RSA_PSS_SALT_MAX_SZ = 62,
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| 124 |
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| 125 | #ifdef OPENSSL_EXTRA
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| 126 | RSA_PKCS1_PADDING_SIZE = 11,
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| 127 | RSA_PKCS1_OAEP_PADDING_SIZE = 42, /* (2 * hashlen(SHA-1)) + 2 */
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| 128 | #endif
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| 129 | #ifdef WC_RSA_PSS
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| 130 | RSA_PSS_PAD_TERM = 0xBC,
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| 131 | #endif
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| 132 |
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| 133 | RSA_PSS_SALT_LEN_DEFAULT = -1,
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| 134 | #ifdef WOLFSSL_PSS_SALT_LEN_DISCOVER
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| 135 | RSA_PSS_SALT_LEN_DISCOVER = -2,
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| 136 | #endif
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| 137 |
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| 138 | #ifdef HAVE_PKCS11
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| 139 | RSA_MAX_ID_LEN = 32,
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| 140 | #endif
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| 141 | };
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| 142 |
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| 143 | #ifdef WC_RSA_NONBLOCK
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| 144 | typedef struct RsaNb {
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| 145 | exptModNb_t exptmod; /* non-block expt_mod */
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| 146 | mp_int tmp;
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| 147 | } RsaNb;
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| 148 | #endif
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| 149 |
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| 150 | /* RSA */
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| 151 | struct RsaKey {
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| 152 | mp_int n, e;
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| 153 | #ifndef WOLFSSL_RSA_PUBLIC_ONLY
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| 154 | mp_int d, p, q;
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| 155 | #if defined(WOLFSSL_KEY_GEN) || defined(OPENSSL_EXTRA) || !defined(RSA_LOW_MEM)
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| 156 | mp_int dP, dQ, u;
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| 157 | #endif
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| 158 | #endif
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| 159 | void* heap; /* for user memory overrides */
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| 160 | byte* data; /* temp buffer for async RSA */
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| 161 | int type; /* public or private */
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| 162 | int state;
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| 163 | word32 dataLen;
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| 164 | #ifdef WC_RSA_BLINDING
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| 165 | WC_RNG* rng; /* for PrivateDecrypt blinding */
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| 166 | #endif
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| 167 | #ifdef WOLF_CRYPTO_CB
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| 168 | int devId;
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| 169 | #endif
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| 170 | #ifdef WOLFSSL_ASYNC_CRYPT
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| 171 | WC_ASYNC_DEV asyncDev;
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| 172 | #ifdef WOLFSSL_CERT_GEN
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| 173 | CertSignCtx certSignCtx; /* context info for cert sign (MakeSignature) */
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| 174 | #endif
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| 175 | #endif /* WOLFSSL_ASYNC_CRYPT */
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| 176 | #ifdef WOLFSSL_XILINX_CRYPT
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| 177 | word32 pubExp; /* to keep values in scope they are here in struct */
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| 178 | byte* mod;
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| 179 | XSecure_Rsa xRsa;
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| 180 | #endif
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| 181 | #ifdef HAVE_PKCS11
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| 182 | byte id[RSA_MAX_ID_LEN];
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| 183 | int idLen;
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| 184 | #endif
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| 185 | #if defined(WOLFSSL_ASYNC_CRYPT) || !defined(WOLFSSL_RSA_VERIFY_INLINE)
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| 186 | byte dataIsAlloc;
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| 187 | #endif
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| 188 | #ifdef WC_RSA_NONBLOCK
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| 189 | RsaNb* nb;
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| 190 | #endif
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| 191 | #ifdef WOLFSSL_AFALG_XILINX_RSA
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| 192 | int alFd;
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| 193 | int rdFd;
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| 194 | #endif
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| 195 | #if defined(WOLFSSL_CRYPTOCELL)
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| 196 | rsa_context_t ctx;
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| 197 | #endif
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| 198 | };
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| 199 |
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| 200 | #ifndef WC_RSAKEY_TYPE_DEFINED
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| 201 | typedef struct RsaKey RsaKey;
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| 202 | #define WC_RSAKEY_TYPE_DEFINED
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| 203 | #endif
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| 204 |
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| 205 | #endif /*HAVE_FIPS */
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| 206 |
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| 207 | WOLFSSL_API int wc_InitRsaKey(RsaKey* key, void* heap);
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| 208 | WOLFSSL_API int wc_InitRsaKey_ex(RsaKey* key, void* heap, int devId);
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| 209 | WOLFSSL_API int wc_FreeRsaKey(RsaKey* key);
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| 210 | #ifdef HAVE_PKCS11
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| 211 | WOLFSSL_API int wc_InitRsaKey_Id(RsaKey* key, unsigned char* id, int len,
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| 212 | void* heap, int devId);
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| 213 | #endif
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| 214 | WOLFSSL_API int wc_CheckRsaKey(RsaKey* key);
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| 215 | #ifdef WOLFSSL_XILINX_CRYPT
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| 216 | WOLFSSL_LOCAL int wc_InitRsaHw(RsaKey* key);
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| 217 | #endif /* WOLFSSL_XILINX_CRYPT */
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| 218 |
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| 219 | WOLFSSL_API int wc_RsaFunction(const byte* in, word32 inLen, byte* out,
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| 220 | word32* outLen, int type, RsaKey* key, WC_RNG* rng);
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| 221 |
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| 222 | WOLFSSL_API int wc_RsaPublicEncrypt(const byte* in, word32 inLen, byte* out,
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| 223 | word32 outLen, RsaKey* key, WC_RNG* rng);
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| 224 | WOLFSSL_API int wc_RsaPrivateDecryptInline(byte* in, word32 inLen, byte** out,
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| 225 | RsaKey* key);
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| 226 | WOLFSSL_API int wc_RsaPrivateDecrypt(const byte* in, word32 inLen, byte* out,
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| 227 | word32 outLen, RsaKey* key);
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| 228 | WOLFSSL_API int wc_RsaSSL_Sign(const byte* in, word32 inLen, byte* out,
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| 229 | word32 outLen, RsaKey* key, WC_RNG* rng);
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| 230 | WOLFSSL_API int wc_RsaPSS_Sign(const byte* in, word32 inLen, byte* out,
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| 231 | word32 outLen, enum wc_HashType hash, int mgf,
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| 232 | RsaKey* key, WC_RNG* rng);
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| 233 | WOLFSSL_API int wc_RsaPSS_Sign_ex(const byte* in, word32 inLen, byte* out,
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| 234 | word32 outLen, enum wc_HashType hash,
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| 235 | int mgf, int saltLen, RsaKey* key,
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| 236 | WC_RNG* rng);
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| 237 | WOLFSSL_API int wc_RsaSSL_VerifyInline(byte* in, word32 inLen, byte** out,
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| 238 | RsaKey* key);
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| 239 | WOLFSSL_API int wc_RsaSSL_Verify(const byte* in, word32 inLen, byte* out,
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| 240 | word32 outLen, RsaKey* key);
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| 241 | WOLFSSL_API int wc_RsaSSL_Verify_ex(const byte* in, word32 inLen, byte* out,
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| 242 | word32 outLen, RsaKey* key, int pad_type);
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| 243 | WOLFSSL_API int wc_RsaPSS_VerifyInline(byte* in, word32 inLen, byte** out,
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| 244 | enum wc_HashType hash, int mgf,
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| 245 | RsaKey* key);
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| 246 | WOLFSSL_API int wc_RsaPSS_VerifyInline_ex(byte* in, word32 inLen, byte** out,
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| 247 | enum wc_HashType hash, int mgf,
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| 248 | int saltLen, RsaKey* key);
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| 249 | WOLFSSL_API int wc_RsaPSS_Verify(byte* in, word32 inLen, byte* out,
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| 250 | word32 outLen, enum wc_HashType hash, int mgf,
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| 251 | RsaKey* key);
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| 252 | WOLFSSL_API int wc_RsaPSS_Verify_ex(byte* in, word32 inLen, byte* out,
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| 253 | word32 outLen, enum wc_HashType hash,
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| 254 | int mgf, int saltLen, RsaKey* key);
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| 255 | WOLFSSL_API int wc_RsaPSS_CheckPadding(const byte* in, word32 inLen, byte* sig,
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| 256 | word32 sigSz,
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| 257 | enum wc_HashType hashType);
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| 258 | WOLFSSL_API int wc_RsaPSS_CheckPadding_ex(const byte* in, word32 inLen,
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| 259 | byte* sig, word32 sigSz,
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| 260 | enum wc_HashType hashType,
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| 261 | int saltLen, int bits);
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| 262 | WOLFSSL_API int wc_RsaPSS_VerifyCheckInline(byte* in, word32 inLen, byte** out,
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| 263 | const byte* digest, word32 digentLen,
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| 264 | enum wc_HashType hash, int mgf,
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| 265 | RsaKey* key);
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| 266 | WOLFSSL_API int wc_RsaPSS_VerifyCheck(byte* in, word32 inLen,
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| 267 | byte* out, word32 outLen,
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| 268 | const byte* digest, word32 digestLen,
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| 269 | enum wc_HashType hash, int mgf,
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| 270 | RsaKey* key);
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| 271 |
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| 272 | WOLFSSL_API int wc_RsaEncryptSize(RsaKey* key);
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| 273 |
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| 274 | #if !defined(HAVE_FIPS) || \
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| 275 | (defined(HAVE_FIPS_VERSION) && (HAVE_FIPS_VERSION >= 2))
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| 276 | /* to avoid asn duplicate symbols @wc_fips */
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| 277 | WOLFSSL_API int wc_RsaPrivateKeyDecode(const byte* input, word32* inOutIdx,
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| 278 | RsaKey*, word32);
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| 279 | WOLFSSL_API int wc_RsaPublicKeyDecode(const byte* input, word32* inOutIdx,
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| 280 | RsaKey*, word32);
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| 281 | WOLFSSL_API int wc_RsaPublicKeyDecodeRaw(const byte* n, word32 nSz,
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| 282 | const byte* e, word32 eSz, RsaKey* key);
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| 283 | WOLFSSL_API int wc_RsaKeyToDer(RsaKey*, byte* output, word32 inLen);
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| 284 |
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| 285 |
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| 286 | #ifdef WC_RSA_BLINDING
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| 287 | WOLFSSL_API int wc_RsaSetRNG(RsaKey* key, WC_RNG* rng);
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| 288 | #endif
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| 289 | #ifdef WC_RSA_NONBLOCK
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| 290 | WOLFSSL_API int wc_RsaSetNonBlock(RsaKey* key, RsaNb* nb);
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| 291 | #ifdef WC_RSA_NONBLOCK_TIME
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| 292 | WOLFSSL_API int wc_RsaSetNonBlockTime(RsaKey* key, word32 maxBlockUs,
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| 293 | word32 cpuMHz);
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| 294 | #endif
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| 295 | #endif
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| 296 |
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| 297 | /*
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| 298 | choice of padding added after fips, so not available when using fips RSA
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| 299 | */
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| 300 |
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| 301 | /* Mask Generation Function Identifiers */
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| 302 | #define WC_MGF1NONE 0
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| 303 | #define WC_MGF1SHA1 26
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| 304 | #define WC_MGF1SHA224 4
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| 305 | #define WC_MGF1SHA256 1
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| 306 | #define WC_MGF1SHA384 2
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| 307 | #define WC_MGF1SHA512 3
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| 308 |
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| 309 | /* Padding types */
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| 310 | #define WC_RSA_PKCSV15_PAD 0
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| 311 | #define WC_RSA_OAEP_PAD 1
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| 312 | #define WC_RSA_PSS_PAD 2
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| 313 | #define WC_RSA_NO_PAD 3
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| 314 |
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| 315 | WOLFSSL_API int wc_RsaPublicEncrypt_ex(const byte* in, word32 inLen, byte* out,
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| 316 | word32 outLen, RsaKey* key, WC_RNG* rng, int type,
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| 317 | enum wc_HashType hash, int mgf, byte* label, word32 lableSz);
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| 318 | WOLFSSL_API int wc_RsaPrivateDecrypt_ex(const byte* in, word32 inLen,
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| 319 | byte* out, word32 outLen, RsaKey* key, int type,
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| 320 | enum wc_HashType hash, int mgf, byte* label, word32 lableSz);
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| 321 | WOLFSSL_API int wc_RsaPrivateDecryptInline_ex(byte* in, word32 inLen,
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| 322 | byte** out, RsaKey* key, int type, enum wc_HashType hash,
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| 323 | int mgf, byte* label, word32 lableSz);
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| 324 | #if defined(WC_RSA_DIRECT) || defined(WC_RSA_NO_PADDING)
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| 325 | WOLFSSL_API int wc_RsaDirect(byte* in, word32 inLen, byte* out, word32* outSz,
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| 326 | RsaKey* key, int type, WC_RNG* rng);
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| 327 | #endif
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| 328 |
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| 329 | #endif /* HAVE_FIPS */
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| 330 |
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| 331 | WOLFSSL_API int wc_RsaFlattenPublicKey(RsaKey*, byte*, word32*, byte*,
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| 332 | word32*);
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| 333 | WOLFSSL_API int wc_RsaExportKey(RsaKey* key,
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| 334 | byte* e, word32* eSz,
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| 335 | byte* n, word32* nSz,
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| 336 | byte* d, word32* dSz,
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| 337 | byte* p, word32* pSz,
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| 338 | byte* q, word32* qSz);
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| 339 |
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| 340 | WOLFSSL_API int wc_RsaKeyToPublicDer(RsaKey*, byte* output, word32 inLen);
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| 341 |
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| 342 | #ifdef WOLFSSL_KEY_GEN
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| 343 | WOLFSSL_API int wc_MakeRsaKey(RsaKey* key, int size, long e, WC_RNG* rng);
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| 344 | WOLFSSL_API int wc_CheckProbablePrime_ex(const byte* p, word32 pSz,
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| 345 | const byte* q, word32 qSz,
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| 346 | const byte* e, word32 eSz,
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| 347 | int nlen, int* isPrime, WC_RNG* rng);
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| 348 | WOLFSSL_API int wc_CheckProbablePrime(const byte* p, word32 pSz,
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| 349 | const byte* q, word32 qSz,
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| 350 | const byte* e, word32 eSz,
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| 351 | int nlen, int* isPrime);
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| 352 | #endif
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| 353 |
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| 354 | WOLFSSL_LOCAL int wc_RsaPad_ex(const byte* input, word32 inputLen, byte* pkcsBlock,
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| 355 | word32 pkcsBlockLen, byte padValue, WC_RNG* rng, int padType,
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| 356 | enum wc_HashType hType, int mgf, byte* optLabel, word32 labelLen,
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| 357 | int saltLen, int bits, void* heap);
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| 358 | WOLFSSL_LOCAL int wc_RsaUnPad_ex(byte* pkcsBlock, word32 pkcsBlockLen, byte** out,
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| 359 | byte padValue, int padType, enum wc_HashType hType,
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| 360 | int mgf, byte* optLabel, word32 labelLen, int saltLen,
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| 361 | int bits, void* heap);
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| 362 |
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| 363 | #endif /* HAVE_USER_RSA */
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| 364 |
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| 365 | #ifdef __cplusplus
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| 366 | } /* extern "C" */
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| 367 | #endif
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| 368 |
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| 369 | #endif /* NO_RSA */
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| 370 | #endif /* WOLF_CRYPT_RSA_H */
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| 371 |
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