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| 1 /* p5_pbev2.c */ | |
| 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL | |
| 3 * project 1999-2004. | |
| 4 */ | |
| 5 /* ==================================================================== | |
| 6 * Copyright (c) 1999 The OpenSSL Project. All rights reserved. | |
| 7 * | |
| 8 * Redistribution and use in source and binary forms, with or without | |
| 9 * modification, are permitted provided that the following conditions | |
| 10 * are met: | |
| 11 * | |
| 12 * 1. Redistributions of source code must retain the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer. | |
| 14 * | |
| 15 * 2. Redistributions in binary form must reproduce the above copyright | |
| 16 * notice, this list of conditions and the following disclaimer in | |
| 17 * the documentation and/or other materials provided with the | |
| 18 * distribution. | |
| 19 * | |
| 20 * 3. All advertising materials mentioning features or use of this | |
| 21 * software must display the following acknowledgment: | |
| 22 * "This product includes software developed by the OpenSSL Project | |
| 23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
| 24 * | |
| 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
| 26 * endorse or promote products derived from this software without | |
| 27 * prior written permission. For written permission, please contact | |
| 28 * licensing@OpenSSL.org. | |
| 29 * | |
| 30 * 5. Products derived from this software may not be called "OpenSSL" | |
| 31 * nor may "OpenSSL" appear in their names without prior written | |
| 32 * permission of the OpenSSL Project. | |
| 33 * | |
| 34 * 6. Redistributions of any form whatsoever must retain the following | |
| 35 * acknowledgment: | |
| 36 * "This product includes software developed by the OpenSSL Project | |
| 37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
| 38 * | |
| 39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
| 40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
| 43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
| 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
| 50 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 51 * ==================================================================== | |
| 52 * | |
| 53 * This product includes cryptographic software written by Eric Young | |
| 54 * (eay@cryptsoft.com). This product includes software written by Tim | |
| 55 * Hudson (tjh@cryptsoft.com). | |
| 56 * | |
| 57 */ | |
| 58 | |
| 59 #include <stdio.h> | |
| 60 #include "cryptlib.h" | |
| 61 #include <openssl/asn1t.h> | |
| 62 #include <openssl/x509.h> | |
| 63 #include <openssl/rand.h> | |
| 64 | |
| 65 /* PKCS#5 v2.0 password based encryption structures */ | |
| 66 | |
| 67 ASN1_SEQUENCE(PBE2PARAM) = { | |
| 68 ASN1_SIMPLE(PBE2PARAM, keyfunc, X509_ALGOR), | |
| 69 ASN1_SIMPLE(PBE2PARAM, encryption, X509_ALGOR) | |
| 70 } ASN1_SEQUENCE_END(PBE2PARAM) | |
| 71 | |
| 72 IMPLEMENT_ASN1_FUNCTIONS(PBE2PARAM) | |
| 73 | |
| 74 ASN1_SEQUENCE(PBKDF2PARAM) = { | |
| 75 ASN1_SIMPLE(PBKDF2PARAM, salt, ASN1_ANY), | |
| 76 ASN1_SIMPLE(PBKDF2PARAM, iter, ASN1_INTEGER), | |
| 77 ASN1_OPT(PBKDF2PARAM, keylength, ASN1_INTEGER), | |
| 78 ASN1_OPT(PBKDF2PARAM, prf, X509_ALGOR) | |
| 79 } ASN1_SEQUENCE_END(PBKDF2PARAM) | |
| 80 | |
| 81 IMPLEMENT_ASN1_FUNCTIONS(PBKDF2PARAM) | |
| 82 | |
| 83 /* Return an algorithm identifier for a PKCS#5 v2.0 PBE algorithm: | |
| 84 * yes I know this is horrible! | |
| 85 * | |
| 86 * Extended version to allow application supplied PRF NID and IV. | |
| 87 */ | |
| 88 | |
| 89 X509_ALGOR *PKCS5_pbe2_set_iv(const EVP_CIPHER *cipher, int iter, | |
| 90 unsigned char *salt, int saltlen, | |
| 91 unsigned char *aiv, int prf_nid) | |
| 92 { | |
| 93 X509_ALGOR *scheme = NULL, *kalg = NULL, *ret = NULL; | |
| 94 int alg_nid, keylen; | |
| 95 EVP_CIPHER_CTX ctx; | |
| 96 unsigned char iv[EVP_MAX_IV_LENGTH]; | |
| 97 PBE2PARAM *pbe2 = NULL; | |
| 98 ASN1_OBJECT *obj; | |
| 99 | |
| 100 alg_nid = EVP_CIPHER_type(cipher); | |
| 101 if(alg_nid == NID_undef) { | |
| 102 ASN1err(ASN1_F_PKCS5_PBE2_SET_IV, | |
| 103 ASN1_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER); | |
| 104 goto err; | |
| 105 } | |
| 106 obj = OBJ_nid2obj(alg_nid); | |
| 107 | |
| 108 if(!(pbe2 = PBE2PARAM_new())) goto merr; | |
| 109 | |
| 110 /* Setup the AlgorithmIdentifier for the encryption scheme */ | |
| 111 scheme = pbe2->encryption; | |
| 112 | |
| 113 scheme->algorithm = obj; | |
| 114 if(!(scheme->parameter = ASN1_TYPE_new())) goto merr; | |
| 115 | |
| 116 /* Create random IV */ | |
| 117 if (EVP_CIPHER_iv_length(cipher)) | |
| 118 { | |
| 119 if (aiv) | |
| 120 memcpy(iv, aiv, EVP_CIPHER_iv_length(cipher)); | |
| 121 else if (RAND_pseudo_bytes(iv, EVP_CIPHER_iv_length(cipher)) < 0
) | |
| 122 goto err; | |
| 123 } | |
| 124 | |
| 125 EVP_CIPHER_CTX_init(&ctx); | |
| 126 | |
| 127 /* Dummy cipherinit to just setup the IV, and PRF */ | |
| 128 if (!EVP_CipherInit_ex(&ctx, cipher, NULL, NULL, iv, 0)) | |
| 129 goto err; | |
| 130 if(EVP_CIPHER_param_to_asn1(&ctx, scheme->parameter) < 0) { | |
| 131 ASN1err(ASN1_F_PKCS5_PBE2_SET_IV, | |
| 132 ASN1_R_ERROR_SETTING_CIPHER_PARAMS); | |
| 133 EVP_CIPHER_CTX_cleanup(&ctx); | |
| 134 goto err; | |
| 135 } | |
| 136 /* If prf NID unspecified see if cipher has a preference. | |
| 137 * An error is OK here: just means use default PRF. | |
| 138 */ | |
| 139 if ((prf_nid == -1) && | |
| 140 EVP_CIPHER_CTX_ctrl(&ctx, EVP_CTRL_PBE_PRF_NID, 0, &prf_nid) <= 0) | |
| 141 { | |
| 142 ERR_clear_error(); | |
| 143 prf_nid = NID_hmacWithSHA1; | |
| 144 } | |
| 145 EVP_CIPHER_CTX_cleanup(&ctx); | |
| 146 | |
| 147 /* If its RC2 then we'd better setup the key length */ | |
| 148 | |
| 149 if(alg_nid == NID_rc2_cbc) | |
| 150 keylen = EVP_CIPHER_key_length(cipher); | |
| 151 else | |
| 152 keylen = -1; | |
| 153 | |
| 154 /* Setup keyfunc */ | |
| 155 | |
| 156 X509_ALGOR_free(pbe2->keyfunc); | |
| 157 | |
| 158 pbe2->keyfunc = PKCS5_pbkdf2_set(iter, salt, saltlen, prf_nid, keylen); | |
| 159 | |
| 160 if (!pbe2->keyfunc) | |
| 161 goto merr; | |
| 162 | |
| 163 /* Now set up top level AlgorithmIdentifier */ | |
| 164 | |
| 165 if(!(ret = X509_ALGOR_new())) goto merr; | |
| 166 if(!(ret->parameter = ASN1_TYPE_new())) goto merr; | |
| 167 | |
| 168 ret->algorithm = OBJ_nid2obj(NID_pbes2); | |
| 169 | |
| 170 /* Encode PBE2PARAM into parameter */ | |
| 171 | |
| 172 if(!ASN1_item_pack(pbe2, ASN1_ITEM_rptr(PBE2PARAM), | |
| 173 &ret->parameter->value.sequence)) goto merr; | |
| 174 ret->parameter->type = V_ASN1_SEQUENCE; | |
| 175 | |
| 176 PBE2PARAM_free(pbe2); | |
| 177 pbe2 = NULL; | |
| 178 | |
| 179 return ret; | |
| 180 | |
| 181 merr: | |
| 182 ASN1err(ASN1_F_PKCS5_PBE2_SET_IV,ERR_R_MALLOC_FAILURE); | |
| 183 | |
| 184 err: | |
| 185 PBE2PARAM_free(pbe2); | |
| 186 /* Note 'scheme' is freed as part of pbe2 */ | |
| 187 X509_ALGOR_free(kalg); | |
| 188 X509_ALGOR_free(ret); | |
| 189 | |
| 190 return NULL; | |
| 191 | |
| 192 } | |
| 193 | |
| 194 X509_ALGOR *PKCS5_pbe2_set(const EVP_CIPHER *cipher, int iter, | |
| 195 unsigned char *salt, int saltlen) | |
| 196 { | |
| 197 return PKCS5_pbe2_set_iv(cipher, iter, salt, saltlen, NULL, -1); | |
| 198 } | |
| 199 | |
| 200 X509_ALGOR *PKCS5_pbkdf2_set(int iter, unsigned char *salt, int saltlen, | |
| 201 int prf_nid, int keylen) | |
| 202 { | |
| 203 X509_ALGOR *keyfunc = NULL; | |
| 204 PBKDF2PARAM *kdf = NULL; | |
| 205 ASN1_OCTET_STRING *osalt = NULL; | |
| 206 | |
| 207 if(!(kdf = PBKDF2PARAM_new())) | |
| 208 goto merr; | |
| 209 if(!(osalt = M_ASN1_OCTET_STRING_new())) | |
| 210 goto merr; | |
| 211 | |
| 212 kdf->salt->value.octet_string = osalt; | |
| 213 kdf->salt->type = V_ASN1_OCTET_STRING; | |
| 214 | |
| 215 if (!saltlen) | |
| 216 saltlen = PKCS5_SALT_LEN; | |
| 217 if (!(osalt->data = OPENSSL_malloc (saltlen))) | |
| 218 goto merr; | |
| 219 | |
| 220 osalt->length = saltlen; | |
| 221 | |
| 222 if (salt) | |
| 223 memcpy (osalt->data, salt, saltlen); | |
| 224 else if (RAND_pseudo_bytes (osalt->data, saltlen) < 0) | |
| 225 goto merr; | |
| 226 | |
| 227 if(iter <= 0) | |
| 228 iter = PKCS5_DEFAULT_ITER; | |
| 229 | |
| 230 if(!ASN1_INTEGER_set(kdf->iter, iter)) | |
| 231 goto merr; | |
| 232 | |
| 233 /* If have a key len set it up */ | |
| 234 | |
| 235 if(keylen > 0) | |
| 236 { | |
| 237 if(!(kdf->keylength = M_ASN1_INTEGER_new())) | |
| 238 goto merr; | |
| 239 if(!ASN1_INTEGER_set (kdf->keylength, keylen)) | |
| 240 goto merr; | |
| 241 } | |
| 242 | |
| 243 /* prf can stay NULL if we are using hmacWithSHA1 */ | |
| 244 if (prf_nid > 0 && prf_nid != NID_hmacWithSHA1) | |
| 245 { | |
| 246 kdf->prf = X509_ALGOR_new(); | |
| 247 if (!kdf->prf) | |
| 248 goto merr; | |
| 249 X509_ALGOR_set0(kdf->prf, OBJ_nid2obj(prf_nid), | |
| 250 V_ASN1_NULL, NULL); | |
| 251 } | |
| 252 | |
| 253 /* Finally setup the keyfunc structure */ | |
| 254 | |
| 255 keyfunc = X509_ALGOR_new(); | |
| 256 if (!keyfunc) | |
| 257 goto merr; | |
| 258 | |
| 259 keyfunc->algorithm = OBJ_nid2obj(NID_id_pbkdf2); | |
| 260 | |
| 261 /* Encode PBKDF2PARAM into parameter of pbe2 */ | |
| 262 | |
| 263 if(!(keyfunc->parameter = ASN1_TYPE_new())) | |
| 264 goto merr; | |
| 265 | |
| 266 if(!ASN1_item_pack(kdf, ASN1_ITEM_rptr(PBKDF2PARAM), | |
| 267 &keyfunc->parameter->value.sequence)) | |
| 268 goto merr; | |
| 269 keyfunc->parameter->type = V_ASN1_SEQUENCE; | |
| 270 | |
| 271 PBKDF2PARAM_free(kdf); | |
| 272 return keyfunc; | |
| 273 | |
| 274 merr: | |
| 275 ASN1err(ASN1_F_PKCS5_PBKDF2_SET,ERR_R_MALLOC_FAILURE); | |
| 276 PBKDF2PARAM_free(kdf); | |
| 277 X509_ALGOR_free(keyfunc); | |
| 278 return NULL; | |
| 279 } | |
| 280 | |
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Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master