1 /* 2 * Copyright 1999-2018 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #include <stdio.h> 11 #include "internal/cryptlib.h" 12 #include <openssl/evp.h> 13 #include <openssl/pkcs12.h> 14 #include <openssl/x509.h> 15 #include "evp_locl.h" 16 17 /* Password based encryption (PBE) functions */ 18 19 /* Setup a cipher context from a PBE algorithm */ 20 21 struct evp_pbe_st { 22 int pbe_type; 23 int pbe_nid; 24 int cipher_nid; 25 int md_nid; 26 EVP_PBE_KEYGEN *keygen; 27 }; 28 29 static STACK_OF(EVP_PBE_CTL) *pbe_algs; 30 31 static const EVP_PBE_CTL builtin_pbe[] = { 32 {EVP_PBE_TYPE_OUTER, NID_pbeWithMD2AndDES_CBC, 33 NID_des_cbc, NID_md2, PKCS5_PBE_keyivgen}, 34 {EVP_PBE_TYPE_OUTER, NID_pbeWithMD5AndDES_CBC, 35 NID_des_cbc, NID_md5, PKCS5_PBE_keyivgen}, 36 {EVP_PBE_TYPE_OUTER, NID_pbeWithSHA1AndRC2_CBC, 37 NID_rc2_64_cbc, NID_sha1, PKCS5_PBE_keyivgen}, 38 39 {EVP_PBE_TYPE_OUTER, NID_id_pbkdf2, -1, -1, PKCS5_v2_PBKDF2_keyivgen}, 40 41 {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And128BitRC4, 42 NID_rc4, NID_sha1, PKCS12_PBE_keyivgen}, 43 {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And40BitRC4, 44 NID_rc4_40, NID_sha1, PKCS12_PBE_keyivgen}, 45 {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And3_Key_TripleDES_CBC, 46 NID_des_ede3_cbc, NID_sha1, PKCS12_PBE_keyivgen}, 47 {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And2_Key_TripleDES_CBC, 48 NID_des_ede_cbc, NID_sha1, PKCS12_PBE_keyivgen}, 49 {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And128BitRC2_CBC, 50 NID_rc2_cbc, NID_sha1, PKCS12_PBE_keyivgen}, 51 {EVP_PBE_TYPE_OUTER, NID_pbe_WithSHA1And40BitRC2_CBC, 52 NID_rc2_40_cbc, NID_sha1, PKCS12_PBE_keyivgen}, 53 54 {EVP_PBE_TYPE_OUTER, NID_pbes2, -1, -1, PKCS5_v2_PBE_keyivgen}, 55 56 {EVP_PBE_TYPE_OUTER, NID_pbeWithMD2AndRC2_CBC, 57 NID_rc2_64_cbc, NID_md2, PKCS5_PBE_keyivgen}, 58 {EVP_PBE_TYPE_OUTER, NID_pbeWithMD5AndRC2_CBC, 59 NID_rc2_64_cbc, NID_md5, PKCS5_PBE_keyivgen}, 60 {EVP_PBE_TYPE_OUTER, NID_pbeWithSHA1AndDES_CBC, 61 NID_des_cbc, NID_sha1, PKCS5_PBE_keyivgen}, 62 63 {EVP_PBE_TYPE_PRF, NID_hmacWithSHA1, -1, NID_sha1, 0}, 64 {EVP_PBE_TYPE_PRF, NID_hmac_md5, -1, NID_md5, 0}, 65 {EVP_PBE_TYPE_PRF, NID_hmac_sha1, -1, NID_sha1, 0}, 66 {EVP_PBE_TYPE_PRF, NID_hmacWithMD5, -1, NID_md5, 0}, 67 {EVP_PBE_TYPE_PRF, NID_hmacWithSHA224, -1, NID_sha224, 0}, 68 {EVP_PBE_TYPE_PRF, NID_hmacWithSHA256, -1, NID_sha256, 0}, 69 {EVP_PBE_TYPE_PRF, NID_hmacWithSHA384, -1, NID_sha384, 0}, 70 {EVP_PBE_TYPE_PRF, NID_hmacWithSHA512, -1, NID_sha512, 0}, 71 {EVP_PBE_TYPE_PRF, NID_id_HMACGostR3411_94, -1, NID_id_GostR3411_94, 0}, 72 {EVP_PBE_TYPE_PRF, NID_id_tc26_hmac_gost_3411_2012_256, -1, 73 NID_id_GostR3411_2012_256, 0}, 74 {EVP_PBE_TYPE_PRF, NID_id_tc26_hmac_gost_3411_2012_512, -1, 75 NID_id_GostR3411_2012_512, 0}, 76 {EVP_PBE_TYPE_PRF, NID_hmacWithSHA512_224, -1, NID_sha512_224, 0}, 77 {EVP_PBE_TYPE_PRF, NID_hmacWithSHA512_256, -1, NID_sha512_256, 0}, 78 {EVP_PBE_TYPE_KDF, NID_id_pbkdf2, -1, -1, PKCS5_v2_PBKDF2_keyivgen}, 79 #ifndef OPENSSL_NO_SCRYPT 80 {EVP_PBE_TYPE_KDF, NID_id_scrypt, -1, -1, PKCS5_v2_scrypt_keyivgen} 81 #endif 82 }; 83 84 int EVP_PBE_CipherInit(ASN1_OBJECT *pbe_obj, const char *pass, int passlen, 85 ASN1_TYPE *param, EVP_CIPHER_CTX *ctx, int en_de) 86 { 87 const EVP_CIPHER *cipher; 88 const EVP_MD *md; 89 int cipher_nid, md_nid; 90 EVP_PBE_KEYGEN *keygen; 91 92 if (!EVP_PBE_find(EVP_PBE_TYPE_OUTER, OBJ_obj2nid(pbe_obj), 93 &cipher_nid, &md_nid, &keygen)) { 94 char obj_tmp[80]; 95 EVPerr(EVP_F_EVP_PBE_CIPHERINIT, EVP_R_UNKNOWN_PBE_ALGORITHM); 96 if (!pbe_obj) 97 OPENSSL_strlcpy(obj_tmp, "NULL", sizeof(obj_tmp)); 98 else 99 i2t_ASN1_OBJECT(obj_tmp, sizeof(obj_tmp), pbe_obj); 100 ERR_add_error_data(2, "TYPE=", obj_tmp); 101 return 0; 102 } 103 104 if (!pass) 105 passlen = 0; 106 else if (passlen == -1) 107 passlen = strlen(pass); 108 109 if (cipher_nid == -1) 110 cipher = NULL; 111 else { 112 cipher = EVP_get_cipherbynid(cipher_nid); 113 if (!cipher) { 114 EVPerr(EVP_F_EVP_PBE_CIPHERINIT, EVP_R_UNKNOWN_CIPHER); 115 return 0; 116 } 117 } 118 119 if (md_nid == -1) 120 md = NULL; 121 else { 122 md = EVP_get_digestbynid(md_nid); 123 if (!md) { 124 EVPerr(EVP_F_EVP_PBE_CIPHERINIT, EVP_R_UNKNOWN_DIGEST); 125 return 0; 126 } 127 } 128 129 if (!keygen(ctx, pass, passlen, param, cipher, md, en_de)) { 130 EVPerr(EVP_F_EVP_PBE_CIPHERINIT, EVP_R_KEYGEN_FAILURE); 131 return 0; 132 } 133 return 1; 134 } 135 136 DECLARE_OBJ_BSEARCH_CMP_FN(EVP_PBE_CTL, EVP_PBE_CTL, pbe2); 137 138 static int pbe2_cmp(const EVP_PBE_CTL *pbe1, const EVP_PBE_CTL *pbe2) 139 { 140 int ret = pbe1->pbe_type - pbe2->pbe_type; 141 if (ret) 142 return ret; 143 else 144 return pbe1->pbe_nid - pbe2->pbe_nid; 145 } 146 147 IMPLEMENT_OBJ_BSEARCH_CMP_FN(EVP_PBE_CTL, EVP_PBE_CTL, pbe2); 148 149 static int pbe_cmp(const EVP_PBE_CTL *const *a, const EVP_PBE_CTL *const *b) 150 { 151 int ret = (*a)->pbe_type - (*b)->pbe_type; 152 if (ret) 153 return ret; 154 else 155 return (*a)->pbe_nid - (*b)->pbe_nid; 156 } 157 158 /* Add a PBE algorithm */ 159 160 int EVP_PBE_alg_add_type(int pbe_type, int pbe_nid, int cipher_nid, 161 int md_nid, EVP_PBE_KEYGEN *keygen) 162 { 163 EVP_PBE_CTL *pbe_tmp; 164 165 if (pbe_algs == NULL) { 166 pbe_algs = sk_EVP_PBE_CTL_new(pbe_cmp); 167 if (pbe_algs == NULL) 168 goto err; 169 } 170 171 if ((pbe_tmp = OPENSSL_malloc(sizeof(*pbe_tmp))) == NULL) 172 goto err; 173 174 pbe_tmp->pbe_type = pbe_type; 175 pbe_tmp->pbe_nid = pbe_nid; 176 pbe_tmp->cipher_nid = cipher_nid; 177 pbe_tmp->md_nid = md_nid; 178 pbe_tmp->keygen = keygen; 179 180 if (!sk_EVP_PBE_CTL_push(pbe_algs, pbe_tmp)) { 181 OPENSSL_free(pbe_tmp); 182 goto err; 183 } 184 return 1; 185 186 err: 187 EVPerr(EVP_F_EVP_PBE_ALG_ADD_TYPE, ERR_R_MALLOC_FAILURE); 188 return 0; 189 } 190 191 int EVP_PBE_alg_add(int nid, const EVP_CIPHER *cipher, const EVP_MD *md, 192 EVP_PBE_KEYGEN *keygen) 193 { 194 int cipher_nid, md_nid; 195 196 if (cipher) 197 cipher_nid = EVP_CIPHER_nid(cipher); 198 else 199 cipher_nid = -1; 200 if (md) 201 md_nid = EVP_MD_type(md); 202 else 203 md_nid = -1; 204 205 return EVP_PBE_alg_add_type(EVP_PBE_TYPE_OUTER, nid, 206 cipher_nid, md_nid, keygen); 207 } 208 209 int EVP_PBE_find(int type, int pbe_nid, 210 int *pcnid, int *pmnid, EVP_PBE_KEYGEN **pkeygen) 211 { 212 EVP_PBE_CTL *pbetmp = NULL, pbelu; 213 int i; 214 if (pbe_nid == NID_undef) 215 return 0; 216 217 pbelu.pbe_type = type; 218 pbelu.pbe_nid = pbe_nid; 219 220 if (pbe_algs != NULL) { 221 i = sk_EVP_PBE_CTL_find(pbe_algs, &pbelu); 222 pbetmp = sk_EVP_PBE_CTL_value(pbe_algs, i); 223 } 224 if (pbetmp == NULL) { 225 pbetmp = OBJ_bsearch_pbe2(&pbelu, builtin_pbe, OSSL_NELEM(builtin_pbe)); 226 } 227 if (pbetmp == NULL) 228 return 0; 229 if (pcnid) 230 *pcnid = pbetmp->cipher_nid; 231 if (pmnid) 232 *pmnid = pbetmp->md_nid; 233 if (pkeygen) 234 *pkeygen = pbetmp->keygen; 235 return 1; 236 } 237 238 static void free_evp_pbe_ctl(EVP_PBE_CTL *pbe) 239 { 240 OPENSSL_free(pbe); 241 } 242 243 void EVP_PBE_cleanup(void) 244 { 245 sk_EVP_PBE_CTL_pop_free(pbe_algs, free_evp_pbe_ctl); 246 pbe_algs = NULL; 247 } 248 249 int EVP_PBE_get(int *ptype, int *ppbe_nid, size_t num) 250 { 251 const EVP_PBE_CTL *tpbe; 252 253 if (num >= OSSL_NELEM(builtin_pbe)) 254 return 0; 255 256 tpbe = builtin_pbe + num; 257 if (ptype) 258 *ptype = tpbe->pbe_type; 259 if (ppbe_nid) 260 *ppbe_nid = tpbe->pbe_nid; 261 return 1; 262 } 263