Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* evp_locl.h */ |
| 2 | /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
| 3 | * project 2000. |
| 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 | /* Macros to code block cipher wrappers */ |
| 60 | |
| 61 | /* Wrapper functions for each cipher mode */ |
| 62 | |
| 63 | #define BLOCK_CIPHER_ecb_loop() \ |
| 64 | size_t i, bl; \ |
| 65 | bl = ctx->cipher->block_size;\ |
| 66 | if(inl < bl) return 1;\ |
| 67 | inl -= bl; \ |
| 68 | for(i=0; i <= inl; i+=bl) |
| 69 | |
| 70 | #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \ |
| 71 | static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \ |
| 72 | {\ |
| 73 | BLOCK_CIPHER_ecb_loop() \ |
| 74 | cprefix##_ecb_encrypt(in + i, out + i, &((kstruct *)ctx->cipher_data)->ksched, ctx->encrypt);\ |
| 75 | return 1;\ |
| 76 | } |
| 77 | |
| 78 | #define EVP_MAXCHUNK ((size_t)1<<(sizeof(long)*8-2)) |
| 79 | |
| 80 | #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \ |
| 81 | static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \ |
| 82 | {\ |
| 83 | while(inl>=EVP_MAXCHUNK)\ |
| 84 | {\ |
| 85 | cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num);\ |
| 86 | inl-=EVP_MAXCHUNK;\ |
| 87 | in +=EVP_MAXCHUNK;\ |
| 88 | out+=EVP_MAXCHUNK;\ |
| 89 | }\ |
| 90 | if (inl)\ |
| 91 | cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num);\ |
| 92 | return 1;\ |
| 93 | } |
| 94 | |
| 95 | #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \ |
| 96 | static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \ |
| 97 | {\ |
| 98 | while(inl>=EVP_MAXCHUNK) \ |
| 99 | {\ |
| 100 | cprefix##_cbc_encrypt(in, out, (long)EVP_MAXCHUNK, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, ctx->encrypt);\ |
| 101 | inl-=EVP_MAXCHUNK;\ |
| 102 | in +=EVP_MAXCHUNK;\ |
| 103 | out+=EVP_MAXCHUNK;\ |
| 104 | }\ |
| 105 | if (inl)\ |
| 106 | cprefix##_cbc_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, ctx->encrypt);\ |
| 107 | return 1;\ |
| 108 | } |
| 109 | |
| 110 | #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \ |
| 111 | static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \ |
| 112 | {\ |
| 113 | size_t chunk=EVP_MAXCHUNK;\ |
| 114 | if (cbits==1) chunk>>=3;\ |
| 115 | if (inl<chunk) chunk=inl;\ |
| 116 | while(inl && inl>=chunk)\ |
| 117 | {\ |
| 118 | cprefix##_cfb##cbits##_encrypt(in, out, (long)((cbits==1) && !(ctx->flags & EVP_CIPH_FLAG_LENGTH_BITS) ?inl*8:inl), &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num, ctx->encrypt);\ |
| 119 | inl-=chunk;\ |
| 120 | in +=chunk;\ |
| 121 | out+=chunk;\ |
| 122 | if(inl<chunk) chunk=inl;\ |
| 123 | }\ |
| 124 | return 1;\ |
| 125 | } |
| 126 | |
| 127 | #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \ |
| 128 | BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \ |
| 129 | BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \ |
| 130 | BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \ |
| 131 | BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) |
| 132 | |
| 133 | #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \ |
| 134 | key_len, iv_len, flags, init_key, cleanup, \ |
| 135 | set_asn1, get_asn1, ctrl) \ |
| 136 | static const EVP_CIPHER cname##_##mode = { \ |
| 137 | nid##_##nmode, block_size, key_len, iv_len, \ |
| 138 | flags | EVP_CIPH_##MODE##_MODE, \ |
| 139 | init_key, \ |
| 140 | cname##_##mode##_cipher, \ |
| 141 | cleanup, \ |
| 142 | sizeof(kstruct), \ |
| 143 | set_asn1, get_asn1,\ |
| 144 | ctrl, \ |
| 145 | NULL \ |
| 146 | }; \ |
| 147 | const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; } |
| 148 | |
| 149 | #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \ |
| 150 | iv_len, flags, init_key, cleanup, set_asn1, \ |
| 151 | get_asn1, ctrl) \ |
| 152 | BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \ |
| 153 | iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl) |
| 154 | |
| 155 | #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \ |
| 156 | iv_len, cbits, flags, init_key, cleanup, \ |
| 157 | set_asn1, get_asn1, ctrl) \ |
| 158 | BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \ |
| 159 | key_len, iv_len, flags, init_key, cleanup, set_asn1, \ |
| 160 | get_asn1, ctrl) |
| 161 | |
| 162 | #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \ |
| 163 | iv_len, cbits, flags, init_key, cleanup, \ |
| 164 | set_asn1, get_asn1, ctrl) \ |
| 165 | BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \ |
| 166 | key_len, iv_len, flags, init_key, cleanup, set_asn1, \ |
| 167 | get_asn1, ctrl) |
| 168 | |
| 169 | #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \ |
| 170 | flags, init_key, cleanup, set_asn1, \ |
| 171 | get_asn1, ctrl) \ |
| 172 | BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \ |
| 173 | 0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl) |
| 174 | |
| 175 | #define BLOCK_CIPHER_defs(cname, kstruct, \ |
| 176 | nid, block_size, key_len, iv_len, cbits, flags, \ |
| 177 | init_key, cleanup, set_asn1, get_asn1, ctrl) \ |
| 178 | BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \ |
| 179 | init_key, cleanup, set_asn1, get_asn1, ctrl) \ |
| 180 | BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \ |
| 181 | flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \ |
| 182 | BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \ |
| 183 | flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \ |
| 184 | BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \ |
| 185 | init_key, cleanup, set_asn1, get_asn1, ctrl) |
| 186 | |
| 187 | |
| 188 | /* |
| 189 | #define BLOCK_CIPHER_defs(cname, kstruct, \ |
| 190 | nid, block_size, key_len, iv_len, flags,\ |
| 191 | init_key, cleanup, set_asn1, get_asn1, ctrl)\ |
| 192 | static const EVP_CIPHER cname##_cbc = {\ |
| 193 | nid##_cbc, block_size, key_len, iv_len, \ |
| 194 | flags | EVP_CIPH_CBC_MODE,\ |
| 195 | init_key,\ |
| 196 | cname##_cbc_cipher,\ |
| 197 | cleanup,\ |
| 198 | sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\ |
| 199 | sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\ |
| 200 | set_asn1, get_asn1,\ |
| 201 | ctrl, \ |
| 202 | NULL \ |
| 203 | };\ |
| 204 | const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\ |
| 205 | static const EVP_CIPHER cname##_cfb = {\ |
| 206 | nid##_cfb64, 1, key_len, iv_len, \ |
| 207 | flags | EVP_CIPH_CFB_MODE,\ |
| 208 | init_key,\ |
| 209 | cname##_cfb_cipher,\ |
| 210 | cleanup,\ |
| 211 | sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\ |
| 212 | sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\ |
| 213 | set_asn1, get_asn1,\ |
| 214 | ctrl,\ |
| 215 | NULL \ |
| 216 | };\ |
| 217 | const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\ |
| 218 | static const EVP_CIPHER cname##_ofb = {\ |
| 219 | nid##_ofb64, 1, key_len, iv_len, \ |
| 220 | flags | EVP_CIPH_OFB_MODE,\ |
| 221 | init_key,\ |
| 222 | cname##_ofb_cipher,\ |
| 223 | cleanup,\ |
| 224 | sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\ |
| 225 | sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\ |
| 226 | set_asn1, get_asn1,\ |
| 227 | ctrl,\ |
| 228 | NULL \ |
| 229 | };\ |
| 230 | const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\ |
| 231 | static const EVP_CIPHER cname##_ecb = {\ |
| 232 | nid##_ecb, block_size, key_len, iv_len, \ |
| 233 | flags | EVP_CIPH_ECB_MODE,\ |
| 234 | init_key,\ |
| 235 | cname##_ecb_cipher,\ |
| 236 | cleanup,\ |
| 237 | sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\ |
| 238 | sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\ |
| 239 | set_asn1, get_asn1,\ |
| 240 | ctrl,\ |
| 241 | NULL \ |
| 242 | };\ |
| 243 | const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; } |
| 244 | */ |
| 245 | |
| 246 | #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \ |
| 247 | block_size, key_len, iv_len, cbits, \ |
| 248 | flags, init_key, \ |
| 249 | cleanup, set_asn1, get_asn1, ctrl) \ |
| 250 | BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \ |
| 251 | BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \ |
| 252 | cbits, flags, init_key, cleanup, set_asn1, \ |
| 253 | get_asn1, ctrl) |
| 254 | |
| 255 | #define EVP_C_DATA(kstruct, ctx) ((kstruct *)(ctx)->cipher_data) |
| 256 | |
| 257 | #define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len) \ |
| 258 | BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \ |
| 259 | BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \ |
| 260 | NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \ |
| 261 | 0, cipher##_init_key, NULL, \ |
| 262 | EVP_CIPHER_set_asn1_iv, \ |
| 263 | EVP_CIPHER_get_asn1_iv, \ |
| 264 | NULL) |
| 265 | |
| 266 | struct evp_pkey_ctx_st |
| 267 | { |
| 268 | /* Method associated with this operation */ |
| 269 | const EVP_PKEY_METHOD *pmeth; |
| 270 | /* Engine that implements this method or NULL if builtin */ |
| 271 | ENGINE *engine; |
| 272 | /* Key: may be NULL */ |
| 273 | EVP_PKEY *pkey; |
| 274 | /* Peer key for key agreement, may be NULL */ |
| 275 | EVP_PKEY *peerkey; |
| 276 | /* Actual operation */ |
| 277 | int operation; |
| 278 | /* Algorithm specific data */ |
| 279 | void *data; |
| 280 | /* Application specific data */ |
| 281 | void *app_data; |
| 282 | /* Keygen callback */ |
| 283 | EVP_PKEY_gen_cb *pkey_gencb; |
| 284 | /* implementation specific keygen data */ |
| 285 | int *keygen_info; |
| 286 | int keygen_info_count; |
| 287 | } /* EVP_PKEY_CTX */; |
| 288 | |
| 289 | #define EVP_PKEY_FLAG_DYNAMIC 1 |
| 290 | |
| 291 | struct evp_pkey_method_st |
| 292 | { |
| 293 | int pkey_id; |
| 294 | int flags; |
| 295 | |
| 296 | int (*init)(EVP_PKEY_CTX *ctx); |
| 297 | int (*copy)(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src); |
| 298 | void (*cleanup)(EVP_PKEY_CTX *ctx); |
| 299 | |
| 300 | int (*paramgen_init)(EVP_PKEY_CTX *ctx); |
| 301 | int (*paramgen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey); |
| 302 | |
| 303 | int (*keygen_init)(EVP_PKEY_CTX *ctx); |
| 304 | int (*keygen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey); |
| 305 | |
| 306 | int (*sign_init)(EVP_PKEY_CTX *ctx); |
| 307 | int (*sign)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen, |
| 308 | const unsigned char *tbs, size_t tbslen); |
| 309 | |
| 310 | int (*verify_init)(EVP_PKEY_CTX *ctx); |
| 311 | int (*verify)(EVP_PKEY_CTX *ctx, |
| 312 | const unsigned char *sig, size_t siglen, |
| 313 | const unsigned char *tbs, size_t tbslen); |
| 314 | |
| 315 | int (*verify_recover_init)(EVP_PKEY_CTX *ctx); |
| 316 | int (*verify_recover)(EVP_PKEY_CTX *ctx, |
| 317 | unsigned char *rout, size_t *routlen, |
| 318 | const unsigned char *sig, size_t siglen); |
| 319 | |
| 320 | int (*signctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx); |
| 321 | int (*signctx)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen, |
| 322 | EVP_MD_CTX *mctx); |
| 323 | |
| 324 | int (*verifyctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx); |
| 325 | int (*verifyctx)(EVP_PKEY_CTX *ctx, const unsigned char *sig,int siglen, |
| 326 | EVP_MD_CTX *mctx); |
| 327 | |
| 328 | int (*encrypt_init)(EVP_PKEY_CTX *ctx); |
| 329 | int (*encrypt)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, |
| 330 | const unsigned char *in, size_t inlen); |
| 331 | |
| 332 | int (*decrypt_init)(EVP_PKEY_CTX *ctx); |
| 333 | int (*decrypt)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, |
| 334 | const unsigned char *in, size_t inlen); |
| 335 | |
| 336 | int (*derive_init)(EVP_PKEY_CTX *ctx); |
| 337 | int (*derive)(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen); |
| 338 | |
| 339 | int (*ctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2); |
| 340 | int (*ctrl_str)(EVP_PKEY_CTX *ctx, const char *type, const char *value); |
| 341 | |
| 342 | |
| 343 | } /* EVP_PKEY_METHOD */; |
| 344 | |
| 345 | void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx); |