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| 1 /* crypto/evp/evp_lib.c */ | |
| 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
| 3 * All rights reserved. | |
| 4 * | |
| 5 * This package is an SSL implementation written | |
| 6 * by Eric Young (eay@cryptsoft.com). | |
| 7 * The implementation was written so as to conform with Netscapes SSL. | |
| 8 * | |
| 9 * This library is free for commercial and non-commercial use as long as | |
| 10 * the following conditions are aheared to. The following conditions | |
| 11 * apply to all code found in this distribution, be it the RC4, RSA, | |
| 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
| 13 * included with this distribution is covered by the same copyright terms | |
| 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
| 15 * | |
| 16 * Copyright remains Eric Young's, and as such any Copyright notices in | |
| 17 * the code are not to be removed. | |
| 18 * If this package is used in a product, Eric Young should be given attribution | |
| 19 * as the author of the parts of the library used. | |
| 20 * This can be in the form of a textual message at program startup or | |
| 21 * in documentation (online or textual) provided with the package. | |
| 22 * | |
| 23 * Redistribution and use in source and binary forms, with or without | |
| 24 * modification, are permitted provided that the following conditions | |
| 25 * are met: | |
| 26 * 1. Redistributions of source code must retain the copyright | |
| 27 * notice, this list of conditions and the following disclaimer. | |
| 28 * 2. Redistributions in binary form must reproduce the above copyright | |
| 29 * notice, this list of conditions and the following disclaimer in the | |
| 30 * documentation and/or other materials provided with the distribution. | |
| 31 * 3. All advertising materials mentioning features or use of this software | |
| 32 * must display the following acknowledgement: | |
| 33 * "This product includes cryptographic software written by | |
| 34 * Eric Young (eay@cryptsoft.com)" | |
| 35 * The word 'cryptographic' can be left out if the rouines from the library | |
| 36 * being used are not cryptographic related :-). | |
| 37 * 4. If you include any Windows specific code (or a derivative thereof) from | |
| 38 * the apps directory (application code) you must include an acknowledgement: | |
| 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
| 40 * | |
| 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
| 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
| 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 51 * SUCH DAMAGE. | |
| 52 * | |
| 53 * The licence and distribution terms for any publically available version or | |
| 54 * derivative of this code cannot be changed. i.e. this code cannot simply be | |
| 55 * copied and put under another distribution licence | |
| 56 * [including the GNU Public Licence.] | |
| 57 */ | |
| 58 | |
| 59 #include <stdio.h> | |
| 60 #include "cryptlib.h" | |
| 61 #include <openssl/evp.h> | |
| 62 #include <openssl/objects.h> | |
| 63 | |
| 64 int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type) | |
| 65 { | |
| 66 int ret; | |
| 67 | |
| 68 if (c->cipher->set_asn1_parameters != NULL) | |
| 69 ret=c->cipher->set_asn1_parameters(c,type); | |
| 70 else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1) | |
| 71 ret=EVP_CIPHER_set_asn1_iv(c, type); | |
| 72 else | |
| 73 ret=-1; | |
| 74 return(ret); | |
| 75 } | |
| 76 | |
| 77 int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type) | |
| 78 { | |
| 79 int ret; | |
| 80 | |
| 81 if (c->cipher->get_asn1_parameters != NULL) | |
| 82 ret=c->cipher->get_asn1_parameters(c,type); | |
| 83 else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1) | |
| 84 ret=EVP_CIPHER_get_asn1_iv(c, type); | |
| 85 else | |
| 86 ret=-1; | |
| 87 return(ret); | |
| 88 } | |
| 89 | |
| 90 int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type) | |
| 91 { | |
| 92 int i=0; | |
| 93 unsigned int l; | |
| 94 | |
| 95 if (type != NULL) | |
| 96 { | |
| 97 l=EVP_CIPHER_CTX_iv_length(c); | |
| 98 OPENSSL_assert(l <= sizeof(c->iv)); | |
| 99 i=ASN1_TYPE_get_octetstring(type,c->oiv,l); | |
| 100 if (i != (int)l) | |
| 101 return(-1); | |
| 102 else if (i > 0) | |
| 103 memcpy(c->iv,c->oiv,l); | |
| 104 } | |
| 105 return(i); | |
| 106 } | |
| 107 | |
| 108 int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type) | |
| 109 { | |
| 110 int i=0; | |
| 111 unsigned int j; | |
| 112 | |
| 113 if (type != NULL) | |
| 114 { | |
| 115 j=EVP_CIPHER_CTX_iv_length(c); | |
| 116 OPENSSL_assert(j <= sizeof(c->iv)); | |
| 117 i=ASN1_TYPE_set_octetstring(type,c->oiv,j); | |
| 118 } | |
| 119 return(i); | |
| 120 } | |
| 121 | |
| 122 /* Convert the various cipher NIDs and dummies to a proper OID NID */ | |
| 123 int EVP_CIPHER_type(const EVP_CIPHER *ctx) | |
| 124 { | |
| 125 int nid; | |
| 126 ASN1_OBJECT *otmp; | |
| 127 nid = EVP_CIPHER_nid(ctx); | |
| 128 | |
| 129 switch(nid) { | |
| 130 | |
| 131 case NID_rc2_cbc: | |
| 132 case NID_rc2_64_cbc: | |
| 133 case NID_rc2_40_cbc: | |
| 134 | |
| 135 return NID_rc2_cbc; | |
| 136 | |
| 137 case NID_rc4: | |
| 138 case NID_rc4_40: | |
| 139 | |
| 140 return NID_rc4; | |
| 141 | |
| 142 case NID_aes_128_cfb128: | |
| 143 case NID_aes_128_cfb8: | |
| 144 case NID_aes_128_cfb1: | |
| 145 | |
| 146 return NID_aes_128_cfb128; | |
| 147 | |
| 148 case NID_aes_192_cfb128: | |
| 149 case NID_aes_192_cfb8: | |
| 150 case NID_aes_192_cfb1: | |
| 151 | |
| 152 return NID_aes_192_cfb128; | |
| 153 | |
| 154 case NID_aes_256_cfb128: | |
| 155 case NID_aes_256_cfb8: | |
| 156 case NID_aes_256_cfb1: | |
| 157 | |
| 158 return NID_aes_256_cfb128; | |
| 159 | |
| 160 case NID_des_cfb64: | |
| 161 case NID_des_cfb8: | |
| 162 case NID_des_cfb1: | |
| 163 | |
| 164 return NID_des_cfb64; | |
| 165 | |
| 166 case NID_des_ede3_cfb64: | |
| 167 case NID_des_ede3_cfb8: | |
| 168 case NID_des_ede3_cfb1: | |
| 169 | |
| 170 return NID_des_cfb64; | |
| 171 | |
| 172 default: | |
| 173 /* Check it has an OID and it is valid */ | |
| 174 otmp = OBJ_nid2obj(nid); | |
| 175 if(!otmp || !otmp->data) nid = NID_undef; | |
| 176 ASN1_OBJECT_free(otmp); | |
| 177 return nid; | |
| 178 } | |
| 179 } | |
| 180 | |
| 181 int EVP_CIPHER_block_size(const EVP_CIPHER *e) | |
| 182 { | |
| 183 return e->block_size; | |
| 184 } | |
| 185 | |
| 186 int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx) | |
| 187 { | |
| 188 return ctx->cipher->block_size; | |
| 189 } | |
| 190 | |
| 191 int EVP_Cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in,
unsigned int inl) | |
| 192 { | |
| 193 return ctx->cipher->do_cipher(ctx,out,in,inl); | |
| 194 } | |
| 195 | |
| 196 const EVP_CIPHER *EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx) | |
| 197 { | |
| 198 return ctx->cipher; | |
| 199 } | |
| 200 | |
| 201 unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher) | |
| 202 { | |
| 203 return cipher->flags; | |
| 204 } | |
| 205 | |
| 206 unsigned long EVP_CIPHER_CTX_flags(const EVP_CIPHER_CTX *ctx) | |
| 207 { | |
| 208 return ctx->cipher->flags; | |
| 209 } | |
| 210 | |
| 211 void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx) | |
| 212 { | |
| 213 return ctx->app_data; | |
| 214 } | |
| 215 | |
| 216 void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data) | |
| 217 { | |
| 218 ctx->app_data = data; | |
| 219 } | |
| 220 | |
| 221 int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher) | |
| 222 { | |
| 223 return cipher->iv_len; | |
| 224 } | |
| 225 | |
| 226 int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx) | |
| 227 { | |
| 228 return ctx->cipher->iv_len; | |
| 229 } | |
| 230 | |
| 231 int EVP_CIPHER_key_length(const EVP_CIPHER *cipher) | |
| 232 { | |
| 233 return cipher->key_len; | |
| 234 } | |
| 235 | |
| 236 int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx) | |
| 237 { | |
| 238 return ctx->key_len; | |
| 239 } | |
| 240 | |
| 241 int EVP_CIPHER_nid(const EVP_CIPHER *cipher) | |
| 242 { | |
| 243 return cipher->nid; | |
| 244 } | |
| 245 | |
| 246 int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx) | |
| 247 { | |
| 248 return ctx->cipher->nid; | |
| 249 } | |
| 250 | |
| 251 int EVP_MD_block_size(const EVP_MD *md) | |
| 252 { | |
| 253 return md->block_size; | |
| 254 } | |
| 255 | |
| 256 int EVP_MD_type(const EVP_MD *md) | |
| 257 { | |
| 258 return md->type; | |
| 259 } | |
| 260 | |
| 261 int EVP_MD_pkey_type(const EVP_MD *md) | |
| 262 { | |
| 263 return md->pkey_type; | |
| 264 } | |
| 265 | |
| 266 int EVP_MD_size(const EVP_MD *md) | |
| 267 { | |
| 268 if (!md) | |
| 269 { | |
| 270 EVPerr(EVP_F_EVP_MD_SIZE, EVP_R_MESSAGE_DIGEST_IS_NULL); | |
| 271 return -1; | |
| 272 } | |
| 273 return md->md_size; | |
| 274 } | |
| 275 | |
| 276 unsigned long EVP_MD_flags(const EVP_MD *md) | |
| 277 { | |
| 278 return md->flags; | |
| 279 } | |
| 280 | |
| 281 const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx) | |
| 282 { | |
| 283 if (!ctx) | |
| 284 return NULL; | |
| 285 return ctx->digest; | |
| 286 } | |
| 287 | |
| 288 void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags) | |
| 289 { | |
| 290 ctx->flags |= flags; | |
| 291 } | |
| 292 | |
| 293 void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags) | |
| 294 { | |
| 295 ctx->flags &= ~flags; | |
| 296 } | |
| 297 | |
| 298 int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags) | |
| 299 { | |
| 300 return (ctx->flags & flags); | |
| 301 } | |
| 302 | |
| 303 void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags) | |
| 304 { | |
| 305 ctx->flags |= flags; | |
| 306 } | |
| 307 | |
| 308 void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags) | |
| 309 { | |
| 310 ctx->flags &= ~flags; | |
| 311 } | |
| 312 | |
| 313 int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags) | |
| 314 { | |
| 315 return (ctx->flags & flags); | |
| 316 } | |
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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