OLD | NEW |
(Empty) | |
| 1 /* pmeth_fn.c */ |
| 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
| 3 * project 2006. |
| 4 */ |
| 5 /* ==================================================================== |
| 6 * Copyright (c) 2006 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 <stdlib.h> |
| 61 #include "cryptlib.h" |
| 62 #include <openssl/objects.h> |
| 63 #include <openssl/evp.h> |
| 64 #include "evp_locl.h" |
| 65 |
| 66 #define M_check_autoarg(ctx, arg, arglen, err) \ |
| 67 if (ctx->pmeth->flags & EVP_PKEY_FLAG_AUTOARGLEN) \ |
| 68 { \ |
| 69 size_t pksize = (size_t)EVP_PKEY_size(ctx->pkey); \ |
| 70 if (!arg) \ |
| 71 { \ |
| 72 *arglen = pksize; \ |
| 73 return 1; \ |
| 74 } \ |
| 75 else if (*arglen < pksize) \ |
| 76 { \ |
| 77 EVPerr(err, EVP_R_BUFFER_TOO_SMALL); /*ckerr_ignore*/\ |
| 78 return 0; \ |
| 79 } \ |
| 80 } |
| 81 |
| 82 int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx) |
| 83 { |
| 84 int ret; |
| 85 if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) |
| 86 { |
| 87 EVPerr(EVP_F_EVP_PKEY_SIGN_INIT, |
| 88 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); |
| 89 return -2; |
| 90 } |
| 91 ctx->operation = EVP_PKEY_OP_SIGN; |
| 92 if (!ctx->pmeth->sign_init) |
| 93 return 1; |
| 94 ret = ctx->pmeth->sign_init(ctx); |
| 95 if (ret <= 0) |
| 96 ctx->operation = EVP_PKEY_OP_UNDEFINED; |
| 97 return ret; |
| 98 } |
| 99 |
| 100 int EVP_PKEY_sign(EVP_PKEY_CTX *ctx, |
| 101 unsigned char *sig, size_t *siglen, |
| 102 const unsigned char *tbs, size_t tbslen) |
| 103 { |
| 104 if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) |
| 105 { |
| 106 EVPerr(EVP_F_EVP_PKEY_SIGN, |
| 107 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); |
| 108 return -2; |
| 109 } |
| 110 if (ctx->operation != EVP_PKEY_OP_SIGN) |
| 111 { |
| 112 EVPerr(EVP_F_EVP_PKEY_SIGN, EVP_R_OPERATON_NOT_INITIALIZED); |
| 113 return -1; |
| 114 } |
| 115 M_check_autoarg(ctx, sig, siglen, EVP_F_EVP_PKEY_SIGN) |
| 116 return ctx->pmeth->sign(ctx, sig, siglen, tbs, tbslen); |
| 117 } |
| 118 |
| 119 int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx) |
| 120 { |
| 121 int ret; |
| 122 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) |
| 123 { |
| 124 EVPerr(EVP_F_EVP_PKEY_VERIFY_INIT, |
| 125 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); |
| 126 return -2; |
| 127 } |
| 128 ctx->operation = EVP_PKEY_OP_VERIFY; |
| 129 if (!ctx->pmeth->verify_init) |
| 130 return 1; |
| 131 ret = ctx->pmeth->verify_init(ctx); |
| 132 if (ret <= 0) |
| 133 ctx->operation = EVP_PKEY_OP_UNDEFINED; |
| 134 return ret; |
| 135 } |
| 136 |
| 137 int EVP_PKEY_verify(EVP_PKEY_CTX *ctx, |
| 138 const unsigned char *sig, size_t siglen, |
| 139 const unsigned char *tbs, size_t tbslen) |
| 140 { |
| 141 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) |
| 142 { |
| 143 EVPerr(EVP_F_EVP_PKEY_VERIFY, |
| 144 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); |
| 145 return -2; |
| 146 } |
| 147 if (ctx->operation != EVP_PKEY_OP_VERIFY) |
| 148 { |
| 149 EVPerr(EVP_F_EVP_PKEY_VERIFY, EVP_R_OPERATON_NOT_INITIALIZED); |
| 150 return -1; |
| 151 } |
| 152 return ctx->pmeth->verify(ctx, sig, siglen, tbs, tbslen); |
| 153 } |
| 154 |
| 155 int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx) |
| 156 { |
| 157 int ret; |
| 158 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) |
| 159 { |
| 160 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER_INIT, |
| 161 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); |
| 162 return -2; |
| 163 } |
| 164 ctx->operation = EVP_PKEY_OP_VERIFYRECOVER; |
| 165 if (!ctx->pmeth->verify_recover_init) |
| 166 return 1; |
| 167 ret = ctx->pmeth->verify_recover_init(ctx); |
| 168 if (ret <= 0) |
| 169 ctx->operation = EVP_PKEY_OP_UNDEFINED; |
| 170 return ret; |
| 171 } |
| 172 |
| 173 int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx, |
| 174 unsigned char *rout, size_t *routlen, |
| 175 const unsigned char *sig, size_t siglen) |
| 176 { |
| 177 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) |
| 178 { |
| 179 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER, |
| 180 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); |
| 181 return -2; |
| 182 } |
| 183 if (ctx->operation != EVP_PKEY_OP_VERIFYRECOVER) |
| 184 { |
| 185 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER, EVP_R_OPERATON_NOT_INITIAL
IZED); |
| 186 return -1; |
| 187 } |
| 188 M_check_autoarg(ctx, rout, routlen, EVP_F_EVP_PKEY_VERIFY_RECOVER) |
| 189 return ctx->pmeth->verify_recover(ctx, rout, routlen, sig, siglen); |
| 190 } |
| 191 |
| 192 int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx) |
| 193 { |
| 194 int ret; |
| 195 if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) |
| 196 { |
| 197 EVPerr(EVP_F_EVP_PKEY_ENCRYPT_INIT, |
| 198 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); |
| 199 return -2; |
| 200 } |
| 201 ctx->operation = EVP_PKEY_OP_ENCRYPT; |
| 202 if (!ctx->pmeth->encrypt_init) |
| 203 return 1; |
| 204 ret = ctx->pmeth->encrypt_init(ctx); |
| 205 if (ret <= 0) |
| 206 ctx->operation = EVP_PKEY_OP_UNDEFINED; |
| 207 return ret; |
| 208 } |
| 209 |
| 210 int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx, |
| 211 unsigned char *out, size_t *outlen, |
| 212 const unsigned char *in, size_t inlen) |
| 213 { |
| 214 if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) |
| 215 { |
| 216 EVPerr(EVP_F_EVP_PKEY_ENCRYPT, |
| 217 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); |
| 218 return -2; |
| 219 } |
| 220 if (ctx->operation != EVP_PKEY_OP_ENCRYPT) |
| 221 { |
| 222 EVPerr(EVP_F_EVP_PKEY_ENCRYPT, EVP_R_OPERATON_NOT_INITIALIZED); |
| 223 return -1; |
| 224 } |
| 225 M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_ENCRYPT) |
| 226 return ctx->pmeth->encrypt(ctx, out, outlen, in, inlen); |
| 227 } |
| 228 |
| 229 int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx) |
| 230 { |
| 231 int ret; |
| 232 if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) |
| 233 { |
| 234 EVPerr(EVP_F_EVP_PKEY_DECRYPT_INIT, |
| 235 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); |
| 236 return -2; |
| 237 } |
| 238 ctx->operation = EVP_PKEY_OP_DECRYPT; |
| 239 if (!ctx->pmeth->decrypt_init) |
| 240 return 1; |
| 241 ret = ctx->pmeth->decrypt_init(ctx); |
| 242 if (ret <= 0) |
| 243 ctx->operation = EVP_PKEY_OP_UNDEFINED; |
| 244 return ret; |
| 245 } |
| 246 |
| 247 int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx, |
| 248 unsigned char *out, size_t *outlen, |
| 249 const unsigned char *in, size_t inlen) |
| 250 { |
| 251 if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) |
| 252 { |
| 253 EVPerr(EVP_F_EVP_PKEY_DECRYPT, |
| 254 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); |
| 255 return -2; |
| 256 } |
| 257 if (ctx->operation != EVP_PKEY_OP_DECRYPT) |
| 258 { |
| 259 EVPerr(EVP_F_EVP_PKEY_DECRYPT, EVP_R_OPERATON_NOT_INITIALIZED); |
| 260 return -1; |
| 261 } |
| 262 M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_DECRYPT) |
| 263 return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen); |
| 264 } |
| 265 |
| 266 |
| 267 int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx) |
| 268 { |
| 269 int ret; |
| 270 if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) |
| 271 { |
| 272 EVPerr(EVP_F_EVP_PKEY_DERIVE_INIT, |
| 273 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); |
| 274 return -2; |
| 275 } |
| 276 ctx->operation = EVP_PKEY_OP_DERIVE; |
| 277 if (!ctx->pmeth->derive_init) |
| 278 return 1; |
| 279 ret = ctx->pmeth->derive_init(ctx); |
| 280 if (ret <= 0) |
| 281 ctx->operation = EVP_PKEY_OP_UNDEFINED; |
| 282 return ret; |
| 283 } |
| 284 |
| 285 int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer) |
| 286 { |
| 287 int ret; |
| 288 if (!ctx || !ctx->pmeth || !(ctx->pmeth->derive||ctx->pmeth->encrypt||ct
x->pmeth->decrypt) || !ctx->pmeth->ctrl) |
| 289 { |
| 290 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, |
| 291 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); |
| 292 return -2; |
| 293 } |
| 294 if (ctx->operation != EVP_PKEY_OP_DERIVE && ctx->operation != EVP_PKEY_O
P_ENCRYPT && ctx->operation != EVP_PKEY_OP_DECRYPT) |
| 295 { |
| 296 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, |
| 297 EVP_R_OPERATON_NOT_INITIALIZED); |
| 298 return -1; |
| 299 } |
| 300 |
| 301 ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 0, peer); |
| 302 |
| 303 if (ret <= 0) |
| 304 return ret; |
| 305 |
| 306 if (ret == 2) |
| 307 return 1; |
| 308 |
| 309 if (!ctx->pkey) |
| 310 { |
| 311 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_NO_KEY_SET); |
| 312 return -1; |
| 313 } |
| 314 |
| 315 if (ctx->pkey->type != peer->type) |
| 316 { |
| 317 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, |
| 318 EVP_R_DIFFERENT_KEY_TYPES); |
| 319 return -1; |
| 320 } |
| 321 |
| 322 /* ran@cryptocom.ru: For clarity. The error is if parameters in peer ar
e |
| 323 * present (!missing) but don't match. EVP_PKEY_cmp_parameters may retu
rn |
| 324 * 1 (match), 0 (don't match) and -2 (comparison is not defined). -1 |
| 325 * (different key types) is impossible here because it is checked earlie
r. |
| 326 * -2 is OK for us here, as well as 1, so we can check for 0 only. */ |
| 327 if (!EVP_PKEY_missing_parameters(peer) && |
| 328 !EVP_PKEY_cmp_parameters(ctx->pkey, peer)) |
| 329 { |
| 330 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, |
| 331 EVP_R_DIFFERENT_PARAMETERS); |
| 332 return -1; |
| 333 } |
| 334 |
| 335 if (ctx->peerkey) |
| 336 EVP_PKEY_free(ctx->peerkey); |
| 337 ctx->peerkey = peer; |
| 338 |
| 339 ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 1, peer); |
| 340 |
| 341 if (ret <= 0) |
| 342 { |
| 343 ctx->peerkey = NULL; |
| 344 return ret; |
| 345 } |
| 346 |
| 347 CRYPTO_add(&peer->references,1,CRYPTO_LOCK_EVP_PKEY); |
| 348 return 1; |
| 349 } |
| 350 |
| 351 |
| 352 int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *pkeylen) |
| 353 { |
| 354 if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) |
| 355 { |
| 356 EVPerr(EVP_F_EVP_PKEY_DERIVE, |
| 357 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); |
| 358 return -2; |
| 359 } |
| 360 if (ctx->operation != EVP_PKEY_OP_DERIVE) |
| 361 { |
| 362 EVPerr(EVP_F_EVP_PKEY_DERIVE, EVP_R_OPERATON_NOT_INITIALIZED); |
| 363 return -1; |
| 364 } |
| 365 M_check_autoarg(ctx, key, pkeylen, EVP_F_EVP_PKEY_DERIVE) |
| 366 return ctx->pmeth->derive(ctx, key, pkeylen); |
| 367 } |
| 368 |
OLD | NEW |