Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
| 2 | * project 2006. |
| 3 | */ |
| 4 | /* ==================================================================== |
| 5 | * Copyright (c) 2006 The OpenSSL Project. All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * |
| 11 | * 1. Redistributions of source code must retain the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer. |
| 13 | * |
| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer in |
| 16 | * the documentation and/or other materials provided with the |
| 17 | * distribution. |
| 18 | * |
| 19 | * 3. All advertising materials mentioning features or use of this |
| 20 | * software must display the following acknowledgment: |
| 21 | * "This product includes software developed by the OpenSSL Project |
| 22 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
| 23 | * |
| 24 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| 25 | * endorse or promote products derived from this software without |
| 26 | * prior written permission. For written permission, please contact |
| 27 | * licensing@OpenSSL.org. |
| 28 | * |
| 29 | * 5. Products derived from this software may not be called "OpenSSL" |
| 30 | * nor may "OpenSSL" appear in their names without prior written |
| 31 | * permission of the OpenSSL Project. |
| 32 | * |
| 33 | * 6. Redistributions of any form whatsoever must retain the following |
| 34 | * acknowledgment: |
| 35 | * "This product includes software developed by the OpenSSL Project |
| 36 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
| 37 | * |
| 38 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| 39 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 40 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 41 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| 42 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 43 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 44 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 45 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 46 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 47 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 48 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 49 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
| 50 | * ==================================================================== |
| 51 | * |
| 52 | * This product includes cryptographic software written by Eric Young |
| 53 | * (eay@cryptsoft.com). This product includes software written by Tim |
| 54 | * Hudson (tjh@cryptsoft.com). |
| 55 | * |
| 56 | */ |
| 57 | |
| 58 | #include <stdio.h> |
| 59 | #include "cryptlib.h" |
| 60 | #include <openssl/x509.h> |
| 61 | #include <openssl/asn1.h> |
| 62 | #include <openssl/dsa.h> |
| 63 | #include <openssl/bn.h> |
| 64 | #ifndef OPENSSL_NO_CMS |
| 65 | #include <openssl/cms.h> |
| 66 | #endif |
| 67 | #include "asn1_locl.h" |
| 68 | |
| 69 | static int dsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey) |
| 70 | { |
| 71 | const unsigned char *p, *pm; |
| 72 | int pklen, pmlen; |
| 73 | int ptype; |
| 74 | void *pval; |
| 75 | ASN1_STRING *pstr; |
| 76 | X509_ALGOR *palg; |
| 77 | ASN1_INTEGER *public_key = NULL; |
| 78 | |
| 79 | DSA *dsa = NULL; |
| 80 | |
| 81 | if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey)) |
| 82 | return 0; |
| 83 | X509_ALGOR_get0(NULL, &ptype, &pval, palg); |
| 84 | |
| 85 | |
| 86 | if (ptype == V_ASN1_SEQUENCE) |
| 87 | { |
| 88 | pstr = pval; |
| 89 | pm = pstr->data; |
| 90 | pmlen = pstr->length; |
| 91 | |
| 92 | if (!(dsa = d2i_DSAparams(NULL, &pm, pmlen))) |
| 93 | { |
| 94 | DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_DECODE_ERROR); |
| 95 | goto err; |
| 96 | } |
| 97 | |
| 98 | } |
| 99 | else if ((ptype == V_ASN1_NULL) || (ptype == V_ASN1_UNDEF)) |
| 100 | { |
| 101 | if (!(dsa = DSA_new())) |
| 102 | { |
| 103 | DSAerr(DSA_F_DSA_PUB_DECODE, ERR_R_MALLOC_FAILURE); |
| 104 | goto err; |
| 105 | } |
| 106 | } |
| 107 | else |
| 108 | { |
| 109 | DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_PARAMETER_ENCODING_ERROR); |
| 110 | goto err; |
| 111 | } |
| 112 | |
| 113 | if (!(public_key=d2i_ASN1_INTEGER(NULL, &p, pklen))) |
| 114 | { |
| 115 | DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_DECODE_ERROR); |
| 116 | goto err; |
| 117 | } |
| 118 | |
| 119 | if (!(dsa->pub_key = ASN1_INTEGER_to_BN(public_key, NULL))) |
| 120 | { |
| 121 | DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_BN_DECODE_ERROR); |
| 122 | goto err; |
| 123 | } |
| 124 | |
| 125 | ASN1_INTEGER_free(public_key); |
| 126 | EVP_PKEY_assign_DSA(pkey, dsa); |
| 127 | return 1; |
| 128 | |
| 129 | err: |
| 130 | if (public_key) |
| 131 | ASN1_INTEGER_free(public_key); |
| 132 | if (dsa) |
| 133 | DSA_free(dsa); |
| 134 | return 0; |
| 135 | |
| 136 | } |
| 137 | |
| 138 | static int dsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey) |
| 139 | { |
| 140 | DSA *dsa; |
| 141 | void *pval = NULL; |
| 142 | int ptype; |
| 143 | unsigned char *penc = NULL; |
| 144 | int penclen; |
| 145 | |
| 146 | dsa=pkey->pkey.dsa; |
| 147 | if (pkey->save_parameters && dsa->p && dsa->q && dsa->g) |
| 148 | { |
| 149 | ASN1_STRING *str; |
| 150 | str = ASN1_STRING_new(); |
| 151 | str->length = i2d_DSAparams(dsa, &str->data); |
| 152 | if (str->length <= 0) |
| 153 | { |
| 154 | DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE); |
| 155 | goto err; |
| 156 | } |
| 157 | pval = str; |
| 158 | ptype = V_ASN1_SEQUENCE; |
| 159 | } |
| 160 | else |
| 161 | ptype = V_ASN1_UNDEF; |
| 162 | |
| 163 | dsa->write_params=0; |
| 164 | |
| 165 | penclen = i2d_DSAPublicKey(dsa, &penc); |
| 166 | |
| 167 | if (penclen <= 0) |
| 168 | { |
| 169 | DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE); |
| 170 | goto err; |
| 171 | } |
| 172 | |
| 173 | if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_DSA), |
| 174 | ptype, pval, penc, penclen)) |
| 175 | return 1; |
| 176 | |
| 177 | err: |
| 178 | if (penc) |
| 179 | OPENSSL_free(penc); |
| 180 | if (pval) |
| 181 | ASN1_STRING_free(pval); |
| 182 | |
| 183 | return 0; |
| 184 | } |
| 185 | |
| 186 | /* In PKCS#8 DSA: you just get a private key integer and parameters in the |
| 187 | * AlgorithmIdentifier the pubkey must be recalculated. |
| 188 | */ |
| 189 | |
| 190 | static int dsa_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8) |
| 191 | { |
| 192 | const unsigned char *p, *pm; |
| 193 | int pklen, pmlen; |
| 194 | int ptype; |
| 195 | void *pval; |
| 196 | ASN1_STRING *pstr; |
| 197 | X509_ALGOR *palg; |
| 198 | ASN1_INTEGER *privkey = NULL; |
| 199 | BN_CTX *ctx = NULL; |
| 200 | |
| 201 | STACK_OF(ASN1_TYPE) *ndsa = NULL; |
| 202 | DSA *dsa = NULL; |
| 203 | |
| 204 | if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8)) |
| 205 | return 0; |
| 206 | X509_ALGOR_get0(NULL, &ptype, &pval, palg); |
| 207 | |
| 208 | /* Check for broken DSA PKCS#8, UGH! */ |
| 209 | if (*p == (V_ASN1_SEQUENCE|V_ASN1_CONSTRUCTED)) |
| 210 | { |
| 211 | ASN1_TYPE *t1, *t2; |
| 212 | if(!(ndsa = d2i_ASN1_SEQUENCE_ANY(NULL, &p, pklen))) |
| 213 | goto decerr; |
| 214 | if (sk_ASN1_TYPE_num(ndsa) != 2) |
| 215 | goto decerr; |
| 216 | /* Handle Two broken types: |
| 217 | * SEQUENCE {parameters, priv_key} |
| 218 | * SEQUENCE {pub_key, priv_key} |
| 219 | */ |
| 220 | |
| 221 | t1 = sk_ASN1_TYPE_value(ndsa, 0); |
| 222 | t2 = sk_ASN1_TYPE_value(ndsa, 1); |
| 223 | if (t1->type == V_ASN1_SEQUENCE) |
| 224 | { |
| 225 | p8->broken = PKCS8_EMBEDDED_PARAM; |
| 226 | pval = t1->value.ptr; |
| 227 | } |
| 228 | else if (ptype == V_ASN1_SEQUENCE) |
| 229 | p8->broken = PKCS8_NS_DB; |
| 230 | else |
| 231 | goto decerr; |
| 232 | |
| 233 | if (t2->type != V_ASN1_INTEGER) |
| 234 | goto decerr; |
| 235 | |
| 236 | privkey = t2->value.integer; |
| 237 | } |
| 238 | else |
| 239 | { |
| 240 | const unsigned char *q = p; |
| 241 | if (!(privkey=d2i_ASN1_INTEGER(NULL, &p, pklen))) |
| 242 | goto decerr; |
| 243 | if (privkey->type == V_ASN1_NEG_INTEGER) |
| 244 | { |
| 245 | p8->broken = PKCS8_NEG_PRIVKEY; |
| 246 | ASN1_INTEGER_free(privkey); |
| 247 | if (!(privkey=d2i_ASN1_UINTEGER(NULL, &q, pklen))) |
| 248 | goto decerr; |
| 249 | } |
| 250 | if (ptype != V_ASN1_SEQUENCE) |
| 251 | goto decerr; |
| 252 | } |
| 253 | |
| 254 | pstr = pval; |
| 255 | pm = pstr->data; |
| 256 | pmlen = pstr->length; |
| 257 | if (!(dsa = d2i_DSAparams(NULL, &pm, pmlen))) |
| 258 | goto decerr; |
| 259 | /* We have parameters now set private key */ |
| 260 | if (!(dsa->priv_key = ASN1_INTEGER_to_BN(privkey, NULL))) |
| 261 | { |
| 262 | DSAerr(DSA_F_DSA_PRIV_DECODE,DSA_R_BN_ERROR); |
| 263 | goto dsaerr; |
| 264 | } |
| 265 | /* Calculate public key */ |
| 266 | if (!(dsa->pub_key = BN_new())) |
| 267 | { |
| 268 | DSAerr(DSA_F_DSA_PRIV_DECODE, ERR_R_MALLOC_FAILURE); |
| 269 | goto dsaerr; |
| 270 | } |
| 271 | if (!(ctx = BN_CTX_new())) |
| 272 | { |
| 273 | DSAerr(DSA_F_DSA_PRIV_DECODE, ERR_R_MALLOC_FAILURE); |
| 274 | goto dsaerr; |
| 275 | } |
| 276 | |
| 277 | if (!BN_mod_exp(dsa->pub_key, dsa->g, dsa->priv_key, dsa->p, ctx)) |
| 278 | { |
| 279 | DSAerr(DSA_F_DSA_PRIV_DECODE,DSA_R_BN_ERROR); |
| 280 | goto dsaerr; |
| 281 | } |
| 282 | |
| 283 | EVP_PKEY_assign_DSA(pkey, dsa); |
| 284 | BN_CTX_free (ctx); |
| 285 | if(ndsa) |
| 286 | sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free); |
| 287 | else |
| 288 | ASN1_INTEGER_free(privkey); |
| 289 | |
| 290 | return 1; |
| 291 | |
| 292 | decerr: |
| 293 | DSAerr(DSA_F_DSA_PRIV_DECODE, EVP_R_DECODE_ERROR); |
| 294 | dsaerr: |
| 295 | BN_CTX_free (ctx); |
| 296 | if (privkey) |
| 297 | ASN1_INTEGER_free(privkey); |
| 298 | sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free); |
| 299 | DSA_free(dsa); |
| 300 | return 0; |
| 301 | } |
| 302 | |
| 303 | static int dsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey) |
| 304 | { |
| 305 | ASN1_STRING *params = NULL; |
| 306 | ASN1_INTEGER *prkey = NULL; |
| 307 | unsigned char *dp = NULL; |
| 308 | int dplen; |
| 309 | |
| 310 | params = ASN1_STRING_new(); |
| 311 | |
| 312 | if (!params) |
| 313 | { |
| 314 | DSAerr(DSA_F_DSA_PRIV_ENCODE,ERR_R_MALLOC_FAILURE); |
| 315 | goto err; |
| 316 | } |
| 317 | |
| 318 | params->length = i2d_DSAparams(pkey->pkey.dsa, ¶ms->data); |
| 319 | if (params->length <= 0) |
| 320 | { |
| 321 | DSAerr(DSA_F_DSA_PRIV_ENCODE,ERR_R_MALLOC_FAILURE); |
| 322 | goto err; |
| 323 | } |
| 324 | params->type = V_ASN1_SEQUENCE; |
| 325 | |
| 326 | /* Get private key into integer */ |
| 327 | prkey = BN_to_ASN1_INTEGER(pkey->pkey.dsa->priv_key, NULL); |
| 328 | |
| 329 | if (!prkey) |
| 330 | { |
| 331 | DSAerr(DSA_F_DSA_PRIV_ENCODE,DSA_R_BN_ERROR); |
| 332 | goto err; |
| 333 | } |
| 334 | |
| 335 | dplen = i2d_ASN1_INTEGER(prkey, &dp); |
| 336 | |
| 337 | ASN1_INTEGER_free(prkey); |
| 338 | |
| 339 | if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_dsa), 0, |
| 340 | V_ASN1_SEQUENCE, params, dp, dplen)) |
| 341 | goto err; |
| 342 | |
| 343 | return 1; |
| 344 | |
| 345 | err: |
| 346 | if (dp != NULL) |
| 347 | OPENSSL_free(dp); |
| 348 | if (params != NULL) |
| 349 | ASN1_STRING_free(params); |
| 350 | if (prkey != NULL) |
| 351 | ASN1_INTEGER_free(prkey); |
| 352 | return 0; |
| 353 | } |
| 354 | |
| 355 | static int int_dsa_size(const EVP_PKEY *pkey) |
| 356 | { |
| 357 | return(DSA_size(pkey->pkey.dsa)); |
| 358 | } |
| 359 | |
| 360 | static int dsa_bits(const EVP_PKEY *pkey) |
| 361 | { |
| 362 | return BN_num_bits(pkey->pkey.dsa->p); |
| 363 | } |
| 364 | |
| 365 | static int dsa_missing_parameters(const EVP_PKEY *pkey) |
| 366 | { |
| 367 | DSA *dsa; |
| 368 | dsa=pkey->pkey.dsa; |
| 369 | if ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL)) |
| 370 | return 1; |
| 371 | return 0; |
| 372 | } |
| 373 | |
| 374 | static int dsa_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) |
| 375 | { |
| 376 | BIGNUM *a; |
| 377 | |
| 378 | if ((a=BN_dup(from->pkey.dsa->p)) == NULL) |
| 379 | return 0; |
| 380 | if (to->pkey.dsa->p != NULL) |
| 381 | BN_free(to->pkey.dsa->p); |
| 382 | to->pkey.dsa->p=a; |
| 383 | |
| 384 | if ((a=BN_dup(from->pkey.dsa->q)) == NULL) |
| 385 | return 0; |
| 386 | if (to->pkey.dsa->q != NULL) |
| 387 | BN_free(to->pkey.dsa->q); |
| 388 | to->pkey.dsa->q=a; |
| 389 | |
| 390 | if ((a=BN_dup(from->pkey.dsa->g)) == NULL) |
| 391 | return 0; |
| 392 | if (to->pkey.dsa->g != NULL) |
| 393 | BN_free(to->pkey.dsa->g); |
| 394 | to->pkey.dsa->g=a; |
| 395 | return 1; |
| 396 | } |
| 397 | |
| 398 | static int dsa_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) |
| 399 | { |
| 400 | if ( BN_cmp(a->pkey.dsa->p,b->pkey.dsa->p) || |
| 401 | BN_cmp(a->pkey.dsa->q,b->pkey.dsa->q) || |
| 402 | BN_cmp(a->pkey.dsa->g,b->pkey.dsa->g)) |
| 403 | return 0; |
| 404 | else |
| 405 | return 1; |
| 406 | } |
| 407 | |
| 408 | static int dsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) |
| 409 | { |
| 410 | if (BN_cmp(b->pkey.dsa->pub_key,a->pkey.dsa->pub_key) != 0) |
| 411 | return 0; |
| 412 | else |
| 413 | return 1; |
| 414 | } |
| 415 | |
| 416 | static void int_dsa_free(EVP_PKEY *pkey) |
| 417 | { |
| 418 | DSA_free(pkey->pkey.dsa); |
| 419 | } |
| 420 | |
| 421 | static void update_buflen(const BIGNUM *b, size_t *pbuflen) |
| 422 | { |
| 423 | size_t i; |
| 424 | if (!b) |
| 425 | return; |
| 426 | if (*pbuflen < (i = (size_t)BN_num_bytes(b))) |
| 427 | *pbuflen = i; |
| 428 | } |
| 429 | |
| 430 | static int do_dsa_print(BIO *bp, const DSA *x, int off, int ptype) |
| 431 | { |
| 432 | unsigned char *m=NULL; |
| 433 | int ret=0; |
| 434 | size_t buf_len=0; |
| 435 | const char *ktype = NULL; |
| 436 | |
| 437 | const BIGNUM *priv_key, *pub_key; |
| 438 | |
| 439 | if (ptype == 2) |
| 440 | priv_key = x->priv_key; |
| 441 | else |
| 442 | priv_key = NULL; |
| 443 | |
| 444 | if (ptype > 0) |
| 445 | pub_key = x->pub_key; |
| 446 | else |
| 447 | pub_key = NULL; |
| 448 | |
| 449 | if (ptype == 2) |
| 450 | ktype = "Private-Key"; |
| 451 | else if (ptype == 1) |
| 452 | ktype = "Public-Key"; |
| 453 | else |
| 454 | ktype = "DSA-Parameters"; |
| 455 | |
| 456 | update_buflen(x->p, &buf_len); |
| 457 | update_buflen(x->q, &buf_len); |
| 458 | update_buflen(x->g, &buf_len); |
| 459 | update_buflen(priv_key, &buf_len); |
| 460 | update_buflen(pub_key, &buf_len); |
| 461 | |
| 462 | m=(unsigned char *)OPENSSL_malloc(buf_len+10); |
| 463 | if (m == NULL) |
| 464 | { |
| 465 | DSAerr(DSA_F_DO_DSA_PRINT,ERR_R_MALLOC_FAILURE); |
| 466 | goto err; |
| 467 | } |
| 468 | |
| 469 | if (priv_key) |
| 470 | { |
| 471 | if(!BIO_indent(bp,off,128)) |
| 472 | goto err; |
| 473 | if (BIO_printf(bp,"%s: (%d bit)\n",ktype, BN_num_bits(x->p)) |
| 474 | <= 0) goto err; |
| 475 | } |
| 476 | |
| 477 | if (!ASN1_bn_print(bp,"priv:",priv_key,m,off)) |
| 478 | goto err; |
| 479 | if (!ASN1_bn_print(bp,"pub: ",pub_key,m,off)) |
| 480 | goto err; |
| 481 | if (!ASN1_bn_print(bp,"P: ",x->p,m,off)) goto err; |
| 482 | if (!ASN1_bn_print(bp,"Q: ",x->q,m,off)) goto err; |
| 483 | if (!ASN1_bn_print(bp,"G: ",x->g,m,off)) goto err; |
| 484 | ret=1; |
| 485 | err: |
| 486 | if (m != NULL) OPENSSL_free(m); |
| 487 | return(ret); |
| 488 | } |
| 489 | |
| 490 | static int dsa_param_decode(EVP_PKEY *pkey, |
| 491 | const unsigned char **pder, int derlen) |
| 492 | { |
| 493 | DSA *dsa; |
| 494 | if (!(dsa = d2i_DSAparams(NULL, pder, derlen))) |
| 495 | { |
| 496 | DSAerr(DSA_F_DSA_PARAM_DECODE, ERR_R_DSA_LIB); |
| 497 | return 0; |
| 498 | } |
| 499 | EVP_PKEY_assign_DSA(pkey, dsa); |
| 500 | return 1; |
| 501 | } |
| 502 | |
| 503 | static int dsa_param_encode(const EVP_PKEY *pkey, unsigned char **pder) |
| 504 | { |
| 505 | return i2d_DSAparams(pkey->pkey.dsa, pder); |
| 506 | } |
| 507 | |
| 508 | static int dsa_param_print(BIO *bp, const EVP_PKEY *pkey, int indent, |
| 509 | ASN1_PCTX *ctx) |
| 510 | { |
| 511 | return do_dsa_print(bp, pkey->pkey.dsa, indent, 0); |
| 512 | } |
| 513 | |
| 514 | static int dsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent, |
| 515 | ASN1_PCTX *ctx) |
| 516 | { |
| 517 | return do_dsa_print(bp, pkey->pkey.dsa, indent, 1); |
| 518 | } |
| 519 | |
| 520 | |
| 521 | static int dsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent, |
| 522 | ASN1_PCTX *ctx) |
| 523 | { |
| 524 | return do_dsa_print(bp, pkey->pkey.dsa, indent, 2); |
| 525 | } |
| 526 | |
| 527 | static int old_dsa_priv_decode(EVP_PKEY *pkey, |
| 528 | const unsigned char **pder, int derlen) |
| 529 | { |
| 530 | DSA *dsa; |
| 531 | if (!(dsa = d2i_DSAPrivateKey (NULL, pder, derlen))) |
| 532 | { |
| 533 | DSAerr(DSA_F_OLD_DSA_PRIV_DECODE, ERR_R_DSA_LIB); |
| 534 | return 0; |
| 535 | } |
| 536 | EVP_PKEY_assign_DSA(pkey, dsa); |
| 537 | return 1; |
| 538 | } |
| 539 | |
| 540 | static int old_dsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder) |
| 541 | { |
| 542 | return i2d_DSAPrivateKey(pkey->pkey.dsa, pder); |
| 543 | } |
| 544 | |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 545 | static int dsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2) |
| 546 | { |
| 547 | switch (op) |
| 548 | { |
| 549 | case ASN1_PKEY_CTRL_PKCS7_SIGN: |
| 550 | if (arg1 == 0) |
| 551 | { |
| 552 | int snid, hnid; |
| 553 | X509_ALGOR *alg1, *alg2; |
| 554 | PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, &alg1, &alg2); |
| 555 | if (alg1 == NULL || alg1->algorithm == NULL) |
| 556 | return -1; |
| 557 | hnid = OBJ_obj2nid(alg1->algorithm); |
| 558 | if (hnid == NID_undef) |
| 559 | return -1; |
| 560 | if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey))) |
| 561 | return -1; |
| 562 | X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0); |
| 563 | } |
| 564 | return 1; |
| 565 | #ifndef OPENSSL_NO_CMS |
| 566 | case ASN1_PKEY_CTRL_CMS_SIGN: |
| 567 | if (arg1 == 0) |
| 568 | { |
| 569 | int snid, hnid; |
| 570 | X509_ALGOR *alg1, *alg2; |
| 571 | CMS_SignerInfo_get0_algs(arg2, NULL, NULL, &alg1, &alg2); |
| 572 | if (alg1 == NULL || alg1->algorithm == NULL) |
| 573 | return -1; |
| 574 | hnid = OBJ_obj2nid(alg1->algorithm); |
| 575 | if (hnid == NID_undef) |
| 576 | return -1; |
| 577 | if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey))) |
| 578 | return -1; |
| 579 | X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0); |
| 580 | } |
| 581 | return 1; |
| 582 | #endif |
| 583 | |
| 584 | case ASN1_PKEY_CTRL_DEFAULT_MD_NID: |
| 585 | *(int *)arg2 = NID_sha1; |
| 586 | return 2; |
| 587 | |
| 588 | default: |
| 589 | return -2; |
| 590 | |
| 591 | } |
| 592 | |
| 593 | } |
| 594 | |
| 595 | /* NB these are sorted in pkey_id order, lowest first */ |
| 596 | |
| 597 | const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[] = |
| 598 | { |
| 599 | |
| 600 | { |
| 601 | EVP_PKEY_DSA2, |
| 602 | EVP_PKEY_DSA, |
| 603 | ASN1_PKEY_ALIAS |
| 604 | }, |
| 605 | |
| 606 | { |
| 607 | EVP_PKEY_DSA1, |
| 608 | EVP_PKEY_DSA, |
| 609 | ASN1_PKEY_ALIAS |
| 610 | }, |
| 611 | |
| 612 | { |
| 613 | EVP_PKEY_DSA4, |
| 614 | EVP_PKEY_DSA, |
| 615 | ASN1_PKEY_ALIAS |
| 616 | }, |
| 617 | |
| 618 | { |
| 619 | EVP_PKEY_DSA3, |
| 620 | EVP_PKEY_DSA, |
| 621 | ASN1_PKEY_ALIAS |
| 622 | }, |
| 623 | |
| 624 | { |
| 625 | EVP_PKEY_DSA, |
| 626 | EVP_PKEY_DSA, |
| 627 | 0, |
| 628 | |
| 629 | "DSA", |
| 630 | "OpenSSL DSA method", |
| 631 | |
| 632 | dsa_pub_decode, |
| 633 | dsa_pub_encode, |
| 634 | dsa_pub_cmp, |
| 635 | dsa_pub_print, |
| 636 | |
| 637 | dsa_priv_decode, |
| 638 | dsa_priv_encode, |
| 639 | dsa_priv_print, |
| 640 | |
| 641 | int_dsa_size, |
| 642 | dsa_bits, |
| 643 | |
| 644 | dsa_param_decode, |
| 645 | dsa_param_encode, |
| 646 | dsa_missing_parameters, |
| 647 | dsa_copy_parameters, |
| 648 | dsa_cmp_parameters, |
| 649 | dsa_param_print, |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 650 | |
| 651 | int_dsa_free, |
| 652 | dsa_pkey_ctrl, |
| 653 | old_dsa_priv_decode, |
| 654 | old_dsa_priv_encode |
| 655 | } |
| 656 | }; |
| 657 | |