Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* crypto/rsa/rsa_pmeth.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 "cryptlib.h" |
| 61 | #include <openssl/asn1t.h> |
| 62 | #include <openssl/x509.h> |
| 63 | #include <openssl/rsa.h> |
| 64 | #include <openssl/bn.h> |
| 65 | #include <openssl/evp.h> |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 66 | #include "evp_locl.h" |
| 67 | #include "rsa_locl.h" |
| 68 | |
| 69 | /* RSA pkey context structure */ |
| 70 | |
| 71 | typedef struct |
| 72 | { |
| 73 | /* Key gen parameters */ |
| 74 | int nbits; |
| 75 | BIGNUM *pub_exp; |
| 76 | /* Keygen callback info */ |
| 77 | int gentmp[2]; |
| 78 | /* RSA padding mode */ |
| 79 | int pad_mode; |
| 80 | /* message digest */ |
| 81 | const EVP_MD *md; |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 82 | /* PSS/OAEP salt length */ |
| 83 | int saltlen; |
| 84 | /* Temp buffer */ |
| 85 | unsigned char *tbuf; |
| 86 | } RSA_PKEY_CTX; |
| 87 | |
| 88 | static int pkey_rsa_init(EVP_PKEY_CTX *ctx) |
| 89 | { |
| 90 | RSA_PKEY_CTX *rctx; |
| 91 | rctx = OPENSSL_malloc(sizeof(RSA_PKEY_CTX)); |
| 92 | if (!rctx) |
| 93 | return 0; |
| 94 | rctx->nbits = 1024; |
| 95 | rctx->pub_exp = NULL; |
| 96 | rctx->pad_mode = RSA_PKCS1_PADDING; |
| 97 | rctx->md = NULL; |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 98 | rctx->tbuf = NULL; |
| 99 | |
| 100 | rctx->saltlen = -2; |
| 101 | |
| 102 | ctx->data = rctx; |
| 103 | ctx->keygen_info = rctx->gentmp; |
| 104 | ctx->keygen_info_count = 2; |
| 105 | |
| 106 | return 1; |
| 107 | } |
| 108 | |
| 109 | static int pkey_rsa_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) |
| 110 | { |
| 111 | RSA_PKEY_CTX *dctx, *sctx; |
| 112 | if (!pkey_rsa_init(dst)) |
| 113 | return 0; |
| 114 | sctx = src->data; |
| 115 | dctx = dst->data; |
| 116 | dctx->nbits = sctx->nbits; |
| 117 | if (sctx->pub_exp) |
| 118 | { |
| 119 | dctx->pub_exp = BN_dup(sctx->pub_exp); |
| 120 | if (!dctx->pub_exp) |
| 121 | return 0; |
| 122 | } |
| 123 | dctx->pad_mode = sctx->pad_mode; |
| 124 | dctx->md = sctx->md; |
| 125 | return 1; |
| 126 | } |
| 127 | |
| 128 | static int setup_tbuf(RSA_PKEY_CTX *ctx, EVP_PKEY_CTX *pk) |
| 129 | { |
| 130 | if (ctx->tbuf) |
| 131 | return 1; |
| 132 | ctx->tbuf = OPENSSL_malloc(EVP_PKEY_size(pk->pkey)); |
| 133 | if (!ctx->tbuf) |
| 134 | return 0; |
| 135 | return 1; |
| 136 | } |
| 137 | |
| 138 | static void pkey_rsa_cleanup(EVP_PKEY_CTX *ctx) |
| 139 | { |
| 140 | RSA_PKEY_CTX *rctx = ctx->data; |
| 141 | if (rctx) |
| 142 | { |
| 143 | if (rctx->pub_exp) |
| 144 | BN_free(rctx->pub_exp); |
| 145 | if (rctx->tbuf) |
| 146 | OPENSSL_free(rctx->tbuf); |
| 147 | OPENSSL_free(rctx); |
| 148 | } |
| 149 | } |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 150 | |
| 151 | static int pkey_rsa_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen, |
| 152 | const unsigned char *tbs, size_t tbslen) |
| 153 | { |
| 154 | int ret; |
| 155 | RSA_PKEY_CTX *rctx = ctx->data; |
| 156 | RSA *rsa = ctx->pkey->pkey.rsa; |
| 157 | |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 158 | if (rctx->md) |
| 159 | { |
| 160 | if (tbslen != (size_t)EVP_MD_size(rctx->md)) |
| 161 | { |
| 162 | RSAerr(RSA_F_PKEY_RSA_SIGN, |
| 163 | RSA_R_INVALID_DIGEST_LENGTH); |
| 164 | return -1; |
| 165 | } |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 166 | if (rctx->pad_mode == RSA_X931_PADDING) |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 167 | { |
| 168 | if (!setup_tbuf(rctx, ctx)) |
| 169 | return -1; |
| 170 | memcpy(rctx->tbuf, tbs, tbslen); |
| 171 | rctx->tbuf[tbslen] = |
| 172 | RSA_X931_hash_id(EVP_MD_type(rctx->md)); |
| 173 | ret = RSA_private_encrypt(tbslen + 1, rctx->tbuf, |
| 174 | sig, rsa, RSA_X931_PADDING); |
| 175 | } |
| 176 | else if (rctx->pad_mode == RSA_PKCS1_PADDING) |
| 177 | { |
| 178 | unsigned int sltmp; |
| 179 | ret = RSA_sign(EVP_MD_type(rctx->md), |
| 180 | tbs, tbslen, sig, &sltmp, rsa); |
| 181 | if (ret <= 0) |
| 182 | return ret; |
| 183 | ret = sltmp; |
| 184 | } |
| 185 | else if (rctx->pad_mode == RSA_PKCS1_PSS_PADDING) |
| 186 | { |
| 187 | if (!setup_tbuf(rctx, ctx)) |
| 188 | return -1; |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 189 | if (!RSA_padding_add_PKCS1_PSS(rsa, rctx->tbuf, tbs, |
| 190 | rctx->md, rctx->saltlen)) |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 191 | return -1; |
| 192 | ret = RSA_private_encrypt(RSA_size(rsa), rctx->tbuf, |
| 193 | sig, rsa, RSA_NO_PADDING); |
| 194 | } |
| 195 | else |
| 196 | return -1; |
| 197 | } |
| 198 | else |
| 199 | ret = RSA_private_encrypt(tbslen, tbs, sig, ctx->pkey->pkey.rsa, |
| 200 | rctx->pad_mode); |
| 201 | if (ret < 0) |
| 202 | return ret; |
| 203 | *siglen = ret; |
| 204 | return 1; |
| 205 | } |
| 206 | |
| 207 | |
| 208 | static int pkey_rsa_verifyrecover(EVP_PKEY_CTX *ctx, |
| 209 | unsigned char *rout, size_t *routlen, |
| 210 | const unsigned char *sig, size_t siglen) |
| 211 | { |
| 212 | int ret; |
| 213 | RSA_PKEY_CTX *rctx = ctx->data; |
| 214 | |
| 215 | if (rctx->md) |
| 216 | { |
| 217 | if (rctx->pad_mode == RSA_X931_PADDING) |
| 218 | { |
| 219 | if (!setup_tbuf(rctx, ctx)) |
| 220 | return -1; |
| 221 | ret = RSA_public_decrypt(siglen, sig, |
| 222 | rctx->tbuf, ctx->pkey->pkey.rsa, |
| 223 | RSA_X931_PADDING); |
| 224 | if (ret < 1) |
| 225 | return 0; |
| 226 | ret--; |
| 227 | if (rctx->tbuf[ret] != |
| 228 | RSA_X931_hash_id(EVP_MD_type(rctx->md))) |
| 229 | { |
| 230 | RSAerr(RSA_F_PKEY_RSA_VERIFYRECOVER, |
| 231 | RSA_R_ALGORITHM_MISMATCH); |
| 232 | return 0; |
| 233 | } |
| 234 | if (ret != EVP_MD_size(rctx->md)) |
| 235 | { |
| 236 | RSAerr(RSA_F_PKEY_RSA_VERIFYRECOVER, |
| 237 | RSA_R_INVALID_DIGEST_LENGTH); |
| 238 | return 0; |
| 239 | } |
| 240 | if (rout) |
| 241 | memcpy(rout, rctx->tbuf, ret); |
| 242 | } |
| 243 | else if (rctx->pad_mode == RSA_PKCS1_PADDING) |
| 244 | { |
| 245 | size_t sltmp; |
| 246 | ret = int_rsa_verify(EVP_MD_type(rctx->md), |
| 247 | NULL, 0, rout, &sltmp, |
| 248 | sig, siglen, ctx->pkey->pkey.rsa); |
| 249 | if (ret <= 0) |
| 250 | return 0; |
| 251 | ret = sltmp; |
| 252 | } |
| 253 | else |
| 254 | return -1; |
| 255 | } |
| 256 | else |
| 257 | ret = RSA_public_decrypt(siglen, sig, rout, ctx->pkey->pkey.rsa, |
| 258 | rctx->pad_mode); |
| 259 | if (ret < 0) |
| 260 | return ret; |
| 261 | *routlen = ret; |
| 262 | return 1; |
| 263 | } |
| 264 | |
| 265 | static int pkey_rsa_verify(EVP_PKEY_CTX *ctx, |
| 266 | const unsigned char *sig, size_t siglen, |
| 267 | const unsigned char *tbs, size_t tbslen) |
| 268 | { |
| 269 | RSA_PKEY_CTX *rctx = ctx->data; |
| 270 | RSA *rsa = ctx->pkey->pkey.rsa; |
| 271 | size_t rslen; |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 272 | if (rctx->md) |
| 273 | { |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 274 | if (rctx->pad_mode == RSA_PKCS1_PADDING) |
| 275 | return RSA_verify(EVP_MD_type(rctx->md), tbs, tbslen, |
| 276 | sig, siglen, rsa); |
| 277 | if (rctx->pad_mode == RSA_X931_PADDING) |
| 278 | { |
| 279 | if (pkey_rsa_verifyrecover(ctx, NULL, &rslen, |
| 280 | sig, siglen) <= 0) |
| 281 | return 0; |
| 282 | } |
| 283 | else if (rctx->pad_mode == RSA_PKCS1_PSS_PADDING) |
| 284 | { |
| 285 | int ret; |
| 286 | if (!setup_tbuf(rctx, ctx)) |
| 287 | return -1; |
| 288 | ret = RSA_public_decrypt(siglen, sig, rctx->tbuf, |
| 289 | rsa, RSA_NO_PADDING); |
| 290 | if (ret <= 0) |
| 291 | return 0; |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 292 | ret = RSA_verify_PKCS1_PSS(rsa, tbs, rctx->md, |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 293 | rctx->tbuf, rctx->saltlen); |
| 294 | if (ret <= 0) |
| 295 | return 0; |
| 296 | return 1; |
| 297 | } |
| 298 | else |
| 299 | return -1; |
| 300 | } |
| 301 | else |
| 302 | { |
| 303 | if (!setup_tbuf(rctx, ctx)) |
| 304 | return -1; |
| 305 | rslen = RSA_public_decrypt(siglen, sig, rctx->tbuf, |
| 306 | rsa, rctx->pad_mode); |
| 307 | if (rslen == 0) |
| 308 | return 0; |
| 309 | } |
| 310 | |
| 311 | if ((rslen != tbslen) || memcmp(tbs, rctx->tbuf, rslen)) |
| 312 | return 0; |
| 313 | |
| 314 | return 1; |
| 315 | |
| 316 | } |
| 317 | |
| 318 | |
| 319 | static int pkey_rsa_encrypt(EVP_PKEY_CTX *ctx, |
| 320 | unsigned char *out, size_t *outlen, |
| 321 | const unsigned char *in, size_t inlen) |
| 322 | { |
| 323 | int ret; |
| 324 | RSA_PKEY_CTX *rctx = ctx->data; |
| 325 | ret = RSA_public_encrypt(inlen, in, out, ctx->pkey->pkey.rsa, |
| 326 | rctx->pad_mode); |
| 327 | if (ret < 0) |
| 328 | return ret; |
| 329 | *outlen = ret; |
| 330 | return 1; |
| 331 | } |
| 332 | |
| 333 | static int pkey_rsa_decrypt(EVP_PKEY_CTX *ctx, |
| 334 | unsigned char *out, size_t *outlen, |
| 335 | const unsigned char *in, size_t inlen) |
| 336 | { |
| 337 | int ret; |
| 338 | RSA_PKEY_CTX *rctx = ctx->data; |
| 339 | ret = RSA_private_decrypt(inlen, in, out, ctx->pkey->pkey.rsa, |
| 340 | rctx->pad_mode); |
| 341 | if (ret < 0) |
| 342 | return ret; |
| 343 | *outlen = ret; |
| 344 | return 1; |
| 345 | } |
| 346 | |
| 347 | static int check_padding_md(const EVP_MD *md, int padding) |
| 348 | { |
| 349 | if (!md) |
| 350 | return 1; |
| 351 | |
| 352 | if (padding == RSA_NO_PADDING) |
| 353 | { |
| 354 | RSAerr(RSA_F_CHECK_PADDING_MD, RSA_R_INVALID_PADDING_MODE); |
| 355 | return 0; |
| 356 | } |
| 357 | |
| 358 | if (padding == RSA_X931_PADDING) |
| 359 | { |
| 360 | if (RSA_X931_hash_id(EVP_MD_type(md)) == -1) |
| 361 | { |
| 362 | RSAerr(RSA_F_CHECK_PADDING_MD, |
| 363 | RSA_R_INVALID_X931_DIGEST); |
| 364 | return 0; |
| 365 | } |
| 366 | return 1; |
| 367 | } |
| 368 | |
| 369 | return 1; |
| 370 | } |
| 371 | |
| 372 | |
| 373 | static int pkey_rsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) |
| 374 | { |
| 375 | RSA_PKEY_CTX *rctx = ctx->data; |
| 376 | switch (type) |
| 377 | { |
| 378 | case EVP_PKEY_CTRL_RSA_PADDING: |
| 379 | if ((p1 >= RSA_PKCS1_PADDING) && (p1 <= RSA_PKCS1_PSS_PADDING)) |
| 380 | { |
| 381 | if (!check_padding_md(rctx->md, p1)) |
| 382 | return 0; |
| 383 | if (p1 == RSA_PKCS1_PSS_PADDING) |
| 384 | { |
| 385 | if (!(ctx->operation & |
| 386 | (EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY))) |
| 387 | goto bad_pad; |
| 388 | if (!rctx->md) |
| 389 | rctx->md = EVP_sha1(); |
| 390 | } |
| 391 | if (p1 == RSA_PKCS1_OAEP_PADDING) |
| 392 | { |
| 393 | if (!(ctx->operation & EVP_PKEY_OP_TYPE_CRYPT)) |
| 394 | goto bad_pad; |
| 395 | if (!rctx->md) |
| 396 | rctx->md = EVP_sha1(); |
| 397 | } |
| 398 | rctx->pad_mode = p1; |
| 399 | return 1; |
| 400 | } |
| 401 | bad_pad: |
| 402 | RSAerr(RSA_F_PKEY_RSA_CTRL, |
| 403 | RSA_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE); |
| 404 | return -2; |
| 405 | |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 406 | case EVP_PKEY_CTRL_RSA_PSS_SALTLEN: |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 407 | if (p1 < -2) |
| 408 | return -2; |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 409 | if (rctx->pad_mode != RSA_PKCS1_PSS_PADDING) |
| 410 | { |
| 411 | RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PSS_SALTLEN); |
| 412 | return -2; |
| 413 | } |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 414 | rctx->saltlen = p1; |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 415 | return 1; |
| 416 | |
| 417 | case EVP_PKEY_CTRL_RSA_KEYGEN_BITS: |
| 418 | if (p1 < 256) |
| 419 | { |
| 420 | RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_KEYBITS); |
| 421 | return -2; |
| 422 | } |
| 423 | rctx->nbits = p1; |
| 424 | return 1; |
| 425 | |
| 426 | case EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP: |
| 427 | if (!p2) |
| 428 | return -2; |
| 429 | rctx->pub_exp = p2; |
| 430 | return 1; |
| 431 | |
| 432 | case EVP_PKEY_CTRL_MD: |
| 433 | if (!check_padding_md(p2, rctx->pad_mode)) |
| 434 | return 0; |
| 435 | rctx->md = p2; |
| 436 | return 1; |
| 437 | |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 438 | case EVP_PKEY_CTRL_DIGESTINIT: |
| 439 | case EVP_PKEY_CTRL_PKCS7_ENCRYPT: |
| 440 | case EVP_PKEY_CTRL_PKCS7_DECRYPT: |
| 441 | case EVP_PKEY_CTRL_PKCS7_SIGN: |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 442 | #ifndef OPENSSL_NO_CMS |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 443 | case EVP_PKEY_CTRL_CMS_ENCRYPT: |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 444 | case EVP_PKEY_CTRL_CMS_DECRYPT: |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 445 | case EVP_PKEY_CTRL_CMS_SIGN: |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 446 | #endif |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 447 | return 1; |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 448 | case EVP_PKEY_CTRL_PEER_KEY: |
| 449 | RSAerr(RSA_F_PKEY_RSA_CTRL, |
| 450 | RSA_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); |
| 451 | return -2; |
| 452 | |
| 453 | default: |
| 454 | return -2; |
| 455 | |
| 456 | } |
| 457 | } |
| 458 | |
| 459 | static int pkey_rsa_ctrl_str(EVP_PKEY_CTX *ctx, |
| 460 | const char *type, const char *value) |
| 461 | { |
| 462 | if (!value) |
| 463 | { |
| 464 | RSAerr(RSA_F_PKEY_RSA_CTRL_STR, RSA_R_VALUE_MISSING); |
| 465 | return 0; |
| 466 | } |
| 467 | if (!strcmp(type, "rsa_padding_mode")) |
| 468 | { |
| 469 | int pm; |
| 470 | if (!strcmp(value, "pkcs1")) |
| 471 | pm = RSA_PKCS1_PADDING; |
| 472 | else if (!strcmp(value, "sslv23")) |
| 473 | pm = RSA_SSLV23_PADDING; |
| 474 | else if (!strcmp(value, "none")) |
| 475 | pm = RSA_NO_PADDING; |
| 476 | else if (!strcmp(value, "oeap")) |
| 477 | pm = RSA_PKCS1_OAEP_PADDING; |
| 478 | else if (!strcmp(value, "x931")) |
| 479 | pm = RSA_X931_PADDING; |
| 480 | else if (!strcmp(value, "pss")) |
| 481 | pm = RSA_PKCS1_PSS_PADDING; |
| 482 | else |
| 483 | { |
| 484 | RSAerr(RSA_F_PKEY_RSA_CTRL_STR, |
| 485 | RSA_R_UNKNOWN_PADDING_TYPE); |
| 486 | return -2; |
| 487 | } |
| 488 | return EVP_PKEY_CTX_set_rsa_padding(ctx, pm); |
| 489 | } |
| 490 | |
| 491 | if (!strcmp(type, "rsa_pss_saltlen")) |
| 492 | { |
| 493 | int saltlen; |
| 494 | saltlen = atoi(value); |
| 495 | return EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, saltlen); |
| 496 | } |
| 497 | |
| 498 | if (!strcmp(type, "rsa_keygen_bits")) |
| 499 | { |
| 500 | int nbits; |
| 501 | nbits = atoi(value); |
| 502 | return EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, nbits); |
| 503 | } |
| 504 | |
| 505 | if (!strcmp(type, "rsa_keygen_pubexp")) |
| 506 | { |
| 507 | int ret; |
| 508 | BIGNUM *pubexp = NULL; |
| 509 | if (!BN_asc2bn(&pubexp, value)) |
| 510 | return 0; |
| 511 | ret = EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, pubexp); |
| 512 | if (ret <= 0) |
| 513 | BN_free(pubexp); |
| 514 | return ret; |
| 515 | } |
| 516 | |
| 517 | return -2; |
| 518 | } |
| 519 | |
| 520 | static int pkey_rsa_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) |
| 521 | { |
| 522 | RSA *rsa = NULL; |
| 523 | RSA_PKEY_CTX *rctx = ctx->data; |
| 524 | BN_GENCB *pcb, cb; |
| 525 | int ret; |
| 526 | if (!rctx->pub_exp) |
| 527 | { |
| 528 | rctx->pub_exp = BN_new(); |
| 529 | if (!rctx->pub_exp || !BN_set_word(rctx->pub_exp, RSA_F4)) |
| 530 | return 0; |
| 531 | } |
| 532 | rsa = RSA_new(); |
| 533 | if (!rsa) |
| 534 | return 0; |
| 535 | if (ctx->pkey_gencb) |
| 536 | { |
| 537 | pcb = &cb; |
| 538 | evp_pkey_set_cb_translate(pcb, ctx); |
| 539 | } |
| 540 | else |
| 541 | pcb = NULL; |
| 542 | ret = RSA_generate_key_ex(rsa, rctx->nbits, rctx->pub_exp, pcb); |
| 543 | if (ret > 0) |
| 544 | EVP_PKEY_assign_RSA(pkey, rsa); |
| 545 | else |
| 546 | RSA_free(rsa); |
| 547 | return ret; |
| 548 | } |
| 549 | |
| 550 | const EVP_PKEY_METHOD rsa_pkey_meth = |
| 551 | { |
| 552 | EVP_PKEY_RSA, |
| 553 | EVP_PKEY_FLAG_AUTOARGLEN, |
| 554 | pkey_rsa_init, |
| 555 | pkey_rsa_copy, |
| 556 | pkey_rsa_cleanup, |
| 557 | |
| 558 | 0,0, |
| 559 | |
| 560 | 0, |
| 561 | pkey_rsa_keygen, |
| 562 | |
| 563 | 0, |
| 564 | pkey_rsa_sign, |
| 565 | |
| 566 | 0, |
| 567 | pkey_rsa_verify, |
| 568 | |
| 569 | 0, |
| 570 | pkey_rsa_verifyrecover, |
| 571 | |
| 572 | |
| 573 | 0,0,0,0, |
| 574 | |
| 575 | 0, |
| 576 | pkey_rsa_encrypt, |
| 577 | |
| 578 | 0, |
| 579 | pkey_rsa_decrypt, |
| 580 | |
| 581 | 0,0, |
| 582 | |
| 583 | pkey_rsa_ctrl, |
| 584 | pkey_rsa_ctrl_str |
| 585 | |
| 586 | |
| 587 | }; |