[331] | 1 | /*
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| 2 | * Copyright 1999-2016 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 <stdio.h>
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| 11 | #include "internal/cryptlib.h"
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| 12 | #include <openssl/evp.h>
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| 13 | #include <openssl/pkcs12.h>
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| 14 | #include <openssl/x509.h>
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| 15 | #include "evp_locl.h"
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| 16 |
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| 17 | /* Password based encryption (PBE) functions */
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| 18 |
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| 19 | /* Setup a cipher context from a PBE algorithm */
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| 20 |
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| 21 | struct evp_pbe_st {
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| 22 | int pbe_type;
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| 23 | int pbe_nid;
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| 24 | int cipher_nid;
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| 25 | int md_nid;
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| 26 | EVP_PBE_KEYGEN *keygen;
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| 27 | };
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| 28 |
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| 29 | static STACK_OF(EVP_PBE_CTL) *pbe_algs;
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| 30 |
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| 31 | static const EVP_PBE_CTL builtin_pbe[] = {
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| 32 | {EVP_PBE_TYPE_OUTER, NID_pbeWithMD2AndDES_CBC,
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| 33 | NID_des_cbc, NID_md2, PKCS5_PBE_keyivgen},
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| 34 | {EVP_PBE_TYPE_OUTER, NID_pbeWithMD5AndDES_CBC,
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| 35 | NID_des_cbc, NID_md5, PKCS5_PBE_keyivgen},
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| 36 | {EVP_PBE_TYPE_OUTER, NID_pbeWithSHA1AndRC2_CBC,
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| 37 | NID_rc2_64_cbc, NID_sha1, PKCS5_PBE_keyivgen},
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| 38 |
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| 39 | {EVP_PBE_TYPE_OUTER, NID_id_pbkdf2, -1, -1, PKCS5_v2_PBKDF2_keyivgen},
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| 40 |
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| 41 | {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And128BitRC4,
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| 42 | NID_rc4, NID_sha1, PKCS12_PBE_keyivgen},
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| 43 | {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And40BitRC4,
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| 44 | NID_rc4_40, NID_sha1, PKCS12_PBE_keyivgen},
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| 45 | {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And3_Key_TripleDES_CBC,
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| 46 | NID_des_ede3_cbc, NID_sha1, PKCS12_PBE_keyivgen},
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| 47 | {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And2_Key_TripleDES_CBC,
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| 48 | NID_des_ede_cbc, NID_sha1, PKCS12_PBE_keyivgen},
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| 49 | {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And128BitRC2_CBC,
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| 50 | NID_rc2_cbc, NID_sha1, PKCS12_PBE_keyivgen},
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| 51 | {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And40BitRC2_CBC,
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| 52 | NID_rc2_40_cbc, NID_sha1, PKCS12_PBE_keyivgen},
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| 53 |
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| 54 | {EVP_PBE_TYPE_OUTER, NID_pbes2, -1, -1, PKCS5_v2_PBE_keyivgen},
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| 55 |
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| 56 | {EVP_PBE_TYPE_OUTER, NID_pbeWithMD2AndRC2_CBC,
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| 57 | NID_rc2_64_cbc, NID_md2, PKCS5_PBE_keyivgen},
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| 58 | {EVP_PBE_TYPE_OUTER, NID_pbeWithMD5AndRC2_CBC,
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| 59 | NID_rc2_64_cbc, NID_md5, PKCS5_PBE_keyivgen},
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| 60 | {EVP_PBE_TYPE_OUTER, NID_pbeWithSHA1AndDES_CBC,
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| 61 | NID_des_cbc, NID_sha1, PKCS5_PBE_keyivgen},
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| 62 |
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| 63 | {EVP_PBE_TYPE_PRF, NID_hmacWithSHA1, -1, NID_sha1, 0},
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| 64 | {EVP_PBE_TYPE_PRF, NID_hmacWithMD5, -1, NID_md5, 0},
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| 65 | {EVP_PBE_TYPE_PRF, NID_hmacWithSHA224, -1, NID_sha224, 0},
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| 66 | {EVP_PBE_TYPE_PRF, NID_hmacWithSHA256, -1, NID_sha256, 0},
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| 67 | {EVP_PBE_TYPE_PRF, NID_hmacWithSHA384, -1, NID_sha384, 0},
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| 68 | {EVP_PBE_TYPE_PRF, NID_hmacWithSHA512, -1, NID_sha512, 0},
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| 69 | {EVP_PBE_TYPE_PRF, NID_id_HMACGostR3411_94, -1, NID_id_GostR3411_94, 0},
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| 70 | {EVP_PBE_TYPE_PRF, NID_id_tc26_hmac_gost_3411_2012_256, -1,
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| 71 | NID_id_GostR3411_2012_256, 0},
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| 72 | {EVP_PBE_TYPE_PRF, NID_id_tc26_hmac_gost_3411_2012_512, -1,
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| 73 | NID_id_GostR3411_2012_512, 0},
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| 74 | {EVP_PBE_TYPE_KDF, NID_id_pbkdf2, -1, -1, PKCS5_v2_PBKDF2_keyivgen},
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| 75 | #ifndef OPENSSL_NO_SCRYPT
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| 76 | {EVP_PBE_TYPE_KDF, NID_id_scrypt, -1, -1, PKCS5_v2_scrypt_keyivgen}
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| 77 | #endif
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| 78 | };
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| 79 |
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| 80 | int EVP_PBE_CipherInit(ASN1_OBJECT *pbe_obj, const char *pass, int passlen,
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| 81 | ASN1_TYPE *param, EVP_CIPHER_CTX *ctx, int en_de)
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| 82 | {
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| 83 | const EVP_CIPHER *cipher;
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| 84 | const EVP_MD *md;
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| 85 | int cipher_nid, md_nid;
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| 86 | EVP_PBE_KEYGEN *keygen;
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| 87 |
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| 88 | if (!EVP_PBE_find(EVP_PBE_TYPE_OUTER, OBJ_obj2nid(pbe_obj),
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| 89 | &cipher_nid, &md_nid, &keygen)) {
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| 90 | char obj_tmp[80];
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| 91 | EVPerr(EVP_F_EVP_PBE_CIPHERINIT, EVP_R_UNKNOWN_PBE_ALGORITHM);
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| 92 | if (!pbe_obj)
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| 93 | OPENSSL_strlcpy(obj_tmp, "NULL", sizeof obj_tmp);
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| 94 | else
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| 95 | i2t_ASN1_OBJECT(obj_tmp, sizeof obj_tmp, pbe_obj);
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| 96 | ERR_add_error_data(2, "TYPE=", obj_tmp);
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| 97 | return 0;
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| 98 | }
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| 99 |
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| 100 | if (!pass)
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| 101 | passlen = 0;
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| 102 | else if (passlen == -1)
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| 103 | passlen = strlen(pass);
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| 104 |
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| 105 | if (cipher_nid == -1)
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| 106 | cipher = NULL;
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| 107 | else {
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| 108 | cipher = EVP_get_cipherbynid(cipher_nid);
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| 109 | if (!cipher) {
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| 110 | EVPerr(EVP_F_EVP_PBE_CIPHERINIT, EVP_R_UNKNOWN_CIPHER);
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| 111 | return 0;
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| 112 | }
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| 113 | }
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| 114 |
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| 115 | if (md_nid == -1)
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| 116 | md = NULL;
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| 117 | else {
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| 118 | md = EVP_get_digestbynid(md_nid);
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| 119 | if (!md) {
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| 120 | EVPerr(EVP_F_EVP_PBE_CIPHERINIT, EVP_R_UNKNOWN_DIGEST);
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| 121 | return 0;
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| 122 | }
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| 123 | }
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| 124 |
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| 125 | if (!keygen(ctx, pass, passlen, param, cipher, md, en_de)) {
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| 126 | EVPerr(EVP_F_EVP_PBE_CIPHERINIT, EVP_R_KEYGEN_FAILURE);
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| 127 | return 0;
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| 128 | }
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| 129 | return 1;
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| 130 | }
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| 131 |
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| 132 | DECLARE_OBJ_BSEARCH_CMP_FN(EVP_PBE_CTL, EVP_PBE_CTL, pbe2);
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| 133 |
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| 134 | static int pbe2_cmp(const EVP_PBE_CTL *pbe1, const EVP_PBE_CTL *pbe2)
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| 135 | {
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| 136 | int ret = pbe1->pbe_type - pbe2->pbe_type;
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| 137 | if (ret)
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| 138 | return ret;
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| 139 | else
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| 140 | return pbe1->pbe_nid - pbe2->pbe_nid;
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| 141 | }
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| 142 |
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| 143 | IMPLEMENT_OBJ_BSEARCH_CMP_FN(EVP_PBE_CTL, EVP_PBE_CTL, pbe2);
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| 144 |
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| 145 | static int pbe_cmp(const EVP_PBE_CTL *const *a, const EVP_PBE_CTL *const *b)
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| 146 | {
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| 147 | int ret = (*a)->pbe_type - (*b)->pbe_type;
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| 148 | if (ret)
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| 149 | return ret;
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| 150 | else
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| 151 | return (*a)->pbe_nid - (*b)->pbe_nid;
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| 152 | }
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| 153 |
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| 154 | /* Add a PBE algorithm */
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| 155 |
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| 156 | int EVP_PBE_alg_add_type(int pbe_type, int pbe_nid, int cipher_nid,
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| 157 | int md_nid, EVP_PBE_KEYGEN *keygen)
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| 158 | {
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| 159 | EVP_PBE_CTL *pbe_tmp;
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| 160 |
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| 161 | if (pbe_algs == NULL) {
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| 162 | pbe_algs = sk_EVP_PBE_CTL_new(pbe_cmp);
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| 163 | if (pbe_algs == NULL)
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| 164 | goto err;
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| 165 | }
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| 166 |
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| 167 | if ((pbe_tmp = OPENSSL_malloc(sizeof(*pbe_tmp))) == NULL)
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| 168 | goto err;
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| 169 |
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| 170 | pbe_tmp->pbe_type = pbe_type;
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| 171 | pbe_tmp->pbe_nid = pbe_nid;
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| 172 | pbe_tmp->cipher_nid = cipher_nid;
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| 173 | pbe_tmp->md_nid = md_nid;
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| 174 | pbe_tmp->keygen = keygen;
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| 175 |
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| 176 | if (!sk_EVP_PBE_CTL_push(pbe_algs, pbe_tmp)) {
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| 177 | OPENSSL_free(pbe_tmp);
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| 178 | goto err;
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| 179 | }
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| 180 | return 1;
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| 181 |
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| 182 | err:
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| 183 | EVPerr(EVP_F_EVP_PBE_ALG_ADD_TYPE, ERR_R_MALLOC_FAILURE);
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| 184 | return 0;
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| 185 | }
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| 186 |
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| 187 | int EVP_PBE_alg_add(int nid, const EVP_CIPHER *cipher, const EVP_MD *md,
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| 188 | EVP_PBE_KEYGEN *keygen)
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| 189 | {
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| 190 | int cipher_nid, md_nid;
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| 191 |
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| 192 | if (cipher)
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| 193 | cipher_nid = EVP_CIPHER_nid(cipher);
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| 194 | else
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| 195 | cipher_nid = -1;
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| 196 | if (md)
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| 197 | md_nid = EVP_MD_type(md);
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| 198 | else
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| 199 | md_nid = -1;
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| 200 |
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| 201 | return EVP_PBE_alg_add_type(EVP_PBE_TYPE_OUTER, nid,
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| 202 | cipher_nid, md_nid, keygen);
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| 203 | }
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| 204 |
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| 205 | int EVP_PBE_find(int type, int pbe_nid,
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| 206 | int *pcnid, int *pmnid, EVP_PBE_KEYGEN **pkeygen)
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| 207 | {
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| 208 | EVP_PBE_CTL *pbetmp = NULL, pbelu;
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| 209 | int i;
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| 210 | if (pbe_nid == NID_undef)
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| 211 | return 0;
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| 212 |
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| 213 | pbelu.pbe_type = type;
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| 214 | pbelu.pbe_nid = pbe_nid;
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| 215 |
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| 216 | if (pbe_algs) {
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| 217 | i = sk_EVP_PBE_CTL_find(pbe_algs, &pbelu);
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| 218 | if (i != -1)
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| 219 | pbetmp = sk_EVP_PBE_CTL_value(pbe_algs, i);
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| 220 | }
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| 221 | if (pbetmp == NULL) {
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| 222 | pbetmp = OBJ_bsearch_pbe2(&pbelu, builtin_pbe, OSSL_NELEM(builtin_pbe));
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| 223 | }
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| 224 | if (pbetmp == NULL)
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| 225 | return 0;
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| 226 | if (pcnid)
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| 227 | *pcnid = pbetmp->cipher_nid;
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| 228 | if (pmnid)
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| 229 | *pmnid = pbetmp->md_nid;
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| 230 | if (pkeygen)
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| 231 | *pkeygen = pbetmp->keygen;
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| 232 | return 1;
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| 233 | }
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| 234 |
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| 235 | static void free_evp_pbe_ctl(EVP_PBE_CTL *pbe)
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| 236 | {
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| 237 | OPENSSL_free(pbe);
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| 238 | }
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| 239 |
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| 240 | void EVP_PBE_cleanup(void)
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| 241 | {
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| 242 | sk_EVP_PBE_CTL_pop_free(pbe_algs, free_evp_pbe_ctl);
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| 243 | pbe_algs = NULL;
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| 244 | }
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| 245 |
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| 246 | int EVP_PBE_get(int *ptype, int *ppbe_nid, size_t num)
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| 247 | {
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| 248 | const EVP_PBE_CTL *tpbe;
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| 249 |
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| 250 | if (num >= OSSL_NELEM(builtin_pbe))
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| 251 | return 0;
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| 252 |
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| 253 | tpbe = builtin_pbe + num;
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| 254 | if (ptype)
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| 255 | *ptype = tpbe->pbe_type;
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| 256 | if (ppbe_nid)
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| 257 | *ppbe_nid = tpbe->pbe_nid;
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| 258 | return 1;
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| 259 | }
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