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rsa_ameth.c
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1 /* crypto/rsa/rsa_ameth.c */
2 /* Written by Dr Stephen N Henson ([email protected]) 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  * [email protected].
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  * ([email protected]). This product includes software written by Tim
55  * Hudson ([email protected]).
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 #ifndef OPENSSL_NO_CMS
66 #include <openssl/cms.h>
67 #endif
68 #include "asn1_locl.h"
69 
70 static int rsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey)
71  {
72  unsigned char *penc = NULL;
73  int penclen;
74  penclen = i2d_RSAPublicKey(pkey->pkey.rsa, &penc);
75  if (penclen <= 0)
76  return 0;
77  if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_RSA),
78  V_ASN1_NULL, NULL, penc, penclen))
79  return 1;
80 
81  OPENSSL_free(penc);
82  return 0;
83  }
84 
85 static int rsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey)
86  {
87  const unsigned char *p;
88  int pklen;
89  RSA *rsa = NULL;
90  if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, NULL, pubkey))
91  return 0;
92  if (!(rsa = d2i_RSAPublicKey(NULL, &p, pklen)))
93  {
94  RSAerr(RSA_F_RSA_PUB_DECODE, ERR_R_RSA_LIB);
95  return 0;
96  }
97  EVP_PKEY_assign_RSA (pkey, rsa);
98  return 1;
99  }
100 
101 static int rsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
102  {
103  if (BN_cmp(b->pkey.rsa->n,a->pkey.rsa->n) != 0
104  || BN_cmp(b->pkey.rsa->e,a->pkey.rsa->e) != 0)
105  return 0;
106  return 1;
107  }
108 
109 static int old_rsa_priv_decode(EVP_PKEY *pkey,
110  const unsigned char **pder, int derlen)
111  {
112  RSA *rsa;
113  if (!(rsa = d2i_RSAPrivateKey (NULL, pder, derlen)))
114  {
115  RSAerr(RSA_F_OLD_RSA_PRIV_DECODE, ERR_R_RSA_LIB);
116  return 0;
117  }
118  EVP_PKEY_assign_RSA(pkey, rsa);
119  return 1;
120  }
121 
122 static int old_rsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder)
123  {
124  return i2d_RSAPrivateKey(pkey->pkey.rsa, pder);
125  }
126 
127 static int rsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey)
128  {
129  unsigned char *rk = NULL;
130  int rklen;
131  rklen = i2d_RSAPrivateKey(pkey->pkey.rsa, &rk);
132 
133  if (rklen <= 0)
134  {
135  RSAerr(RSA_F_RSA_PRIV_ENCODE,ERR_R_MALLOC_FAILURE);
136  return 0;
137  }
138 
139  if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_rsaEncryption), 0,
140  V_ASN1_NULL, NULL, rk, rklen))
141  {
142  RSAerr(RSA_F_RSA_PRIV_ENCODE,ERR_R_MALLOC_FAILURE);
143  return 0;
144  }
145 
146  return 1;
147  }
148 
149 static int rsa_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8)
150  {
151  const unsigned char *p;
152  int pklen;
153  if (!PKCS8_pkey_get0(NULL, &p, &pklen, NULL, p8))
154  return 0;
155  return old_rsa_priv_decode(pkey, &p, pklen);
156  }
157 
158 static int int_rsa_size(const EVP_PKEY *pkey)
159  {
160  return RSA_size(pkey->pkey.rsa);
161  }
162 
163 static int rsa_bits(const EVP_PKEY *pkey)
164  {
165  return BN_num_bits(pkey->pkey.rsa->n);
166  }
167 
168 static void int_rsa_free(EVP_PKEY *pkey)
169  {
170  RSA_free(pkey->pkey.rsa);
171  }
172 
173 
174 static void update_buflen(const BIGNUM *b, size_t *pbuflen)
175  {
176  size_t i;
177  if (!b)
178  return;
179  if (*pbuflen < (i = (size_t)BN_num_bytes(b)))
180  *pbuflen = i;
181  }
182 
183 static int do_rsa_print(BIO *bp, const RSA *x, int off, int priv)
184  {
185  char *str;
186  const char *s;
187  unsigned char *m=NULL;
188  int ret=0, mod_len = 0;
189  size_t buf_len=0;
190 
191  update_buflen(x->n, &buf_len);
192  update_buflen(x->e, &buf_len);
193 
194  if (priv)
195  {
196  update_buflen(x->d, &buf_len);
197  update_buflen(x->p, &buf_len);
198  update_buflen(x->q, &buf_len);
199  update_buflen(x->dmp1, &buf_len);
200  update_buflen(x->dmq1, &buf_len);
201  update_buflen(x->iqmp, &buf_len);
202  }
203 
204  m=(unsigned char *)OPENSSL_malloc(buf_len+10);
205  if (m == NULL)
206  {
207  RSAerr(RSA_F_DO_RSA_PRINT,ERR_R_MALLOC_FAILURE);
208  goto err;
209  }
210 
211  if (x->n != NULL)
212  mod_len = BN_num_bits(x->n);
213 
214  if(!BIO_indent(bp,off,128))
215  goto err;
216 
217  if (priv && x->d)
218  {
219  if (BIO_printf(bp,"Private-Key: (%d bit)\n", mod_len)
220  <= 0) goto err;
221  str = "modulus:";
222  s = "publicExponent:";
223  }
224  else
225  {
226  if (BIO_printf(bp,"Public-Key: (%d bit)\n", mod_len)
227  <= 0) goto err;
228  str = "Modulus:";
229  s= "Exponent:";
230  }
231  if (!ASN1_bn_print(bp,str,x->n,m,off)) goto err;
232  if (!ASN1_bn_print(bp,s,x->e,m,off))
233  goto err;
234  if (priv)
235  {
236  if (!ASN1_bn_print(bp,"privateExponent:",x->d,m,off))
237  goto err;
238  if (!ASN1_bn_print(bp,"prime1:",x->p,m,off))
239  goto err;
240  if (!ASN1_bn_print(bp,"prime2:",x->q,m,off))
241  goto err;
242  if (!ASN1_bn_print(bp,"exponent1:",x->dmp1,m,off))
243  goto err;
244  if (!ASN1_bn_print(bp,"exponent2:",x->dmq1,m,off))
245  goto err;
246  if (!ASN1_bn_print(bp,"coefficient:",x->iqmp,m,off))
247  goto err;
248  }
249  ret=1;
250 err:
251  if (m != NULL) OPENSSL_free(m);
252  return(ret);
253  }
254 
255 static int rsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
256  ASN1_PCTX *ctx)
257  {
258  return do_rsa_print(bp, pkey->pkey.rsa, indent, 0);
259  }
260 
261 
262 static int rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
263  ASN1_PCTX *ctx)
264  {
265  return do_rsa_print(bp, pkey->pkey.rsa, indent, 1);
266  }
267 
268 static RSA_PSS_PARAMS *rsa_pss_decode(const X509_ALGOR *alg,
269  X509_ALGOR **pmaskHash)
270  {
271  const unsigned char *p;
272  int plen;
273  RSA_PSS_PARAMS *pss;
274 
275  *pmaskHash = NULL;
276 
277  if (!alg->parameter || alg->parameter->type != V_ASN1_SEQUENCE)
278  return NULL;
279  p = alg->parameter->value.sequence->data;
280  plen = alg->parameter->value.sequence->length;
281  pss = d2i_RSA_PSS_PARAMS(NULL, &p, plen);
282 
283  if (!pss)
284  return NULL;
285 
286  if (pss->maskGenAlgorithm)
287  {
288  ASN1_TYPE *param = pss->maskGenAlgorithm->parameter;
289  if (OBJ_obj2nid(pss->maskGenAlgorithm->algorithm) == NID_mgf1
290  && param->type == V_ASN1_SEQUENCE)
291  {
292  p = param->value.sequence->data;
293  plen = param->value.sequence->length;
294  *pmaskHash = d2i_X509_ALGOR(NULL, &p, plen);
295  }
296  }
297 
298  return pss;
299  }
300 
301 static int rsa_pss_param_print(BIO *bp, RSA_PSS_PARAMS *pss,
302  X509_ALGOR *maskHash, int indent)
303  {
304  int rv = 0;
305  if (!pss)
306  {
307  if (BIO_puts(bp, " (INVALID PSS PARAMETERS)\n") <= 0)
308  return 0;
309  return 1;
310  }
311  if (BIO_puts(bp, "\n") <= 0)
312  goto err;
313  if (!BIO_indent(bp, indent, 128))
314  goto err;
315  if (BIO_puts(bp, "Hash Algorithm: ") <= 0)
316  goto err;
317 
318  if (pss->hashAlgorithm)
319  {
320  if (i2a_ASN1_OBJECT(bp, pss->hashAlgorithm->algorithm) <= 0)
321  goto err;
322  }
323  else if (BIO_puts(bp, "sha1 (default)") <= 0)
324  goto err;
325 
326  if (BIO_puts(bp, "\n") <= 0)
327  goto err;
328 
329  if (!BIO_indent(bp, indent, 128))
330  goto err;
331 
332  if (BIO_puts(bp, "Mask Algorithm: ") <= 0)
333  goto err;
334  if (pss->maskGenAlgorithm)
335  {
336  if (i2a_ASN1_OBJECT(bp, pss->maskGenAlgorithm->algorithm) <= 0)
337  goto err;
338  if (BIO_puts(bp, " with ") <= 0)
339  goto err;
340  if (maskHash)
341  {
342  if (i2a_ASN1_OBJECT(bp, maskHash->algorithm) <= 0)
343  goto err;
344  }
345  else if (BIO_puts(bp, "INVALID") <= 0)
346  goto err;
347  }
348  else if (BIO_puts(bp, "mgf1 with sha1 (default)") <= 0)
349  goto err;
350  BIO_puts(bp, "\n");
351 
352  if (!BIO_indent(bp, indent, 128))
353  goto err;
354  if (BIO_puts(bp, "Salt Length: ") <= 0)
355  goto err;
356  if (pss->saltLength)
357  {
358  if (i2a_ASN1_INTEGER(bp, pss->saltLength) <= 0)
359  goto err;
360  }
361  else if (BIO_puts(bp, "20 (default)") <= 0)
362  goto err;
363  BIO_puts(bp, "\n");
364 
365  if (!BIO_indent(bp, indent, 128))
366  goto err;
367  if (BIO_puts(bp, "Trailer Field: ") <= 0)
368  goto err;
369  if (pss->trailerField)
370  {
371  if (i2a_ASN1_INTEGER(bp, pss->trailerField) <= 0)
372  goto err;
373  }
374  else if (BIO_puts(bp, "0xbc (default)") <= 0)
375  goto err;
376  BIO_puts(bp, "\n");
377 
378  rv = 1;
379 
380  err:
381  return rv;
382 
383  }
384 
385 static int rsa_sig_print(BIO *bp, const X509_ALGOR *sigalg,
386  const ASN1_STRING *sig,
387  int indent, ASN1_PCTX *pctx)
388  {
389  if (OBJ_obj2nid(sigalg->algorithm) == NID_rsassaPss)
390  {
391  int rv;
392  RSA_PSS_PARAMS *pss;
393  X509_ALGOR *maskHash;
394  pss = rsa_pss_decode(sigalg, &maskHash);
395  rv = rsa_pss_param_print(bp, pss, maskHash, indent);
396  if (pss)
397  RSA_PSS_PARAMS_free(pss);
398  if (maskHash)
399  X509_ALGOR_free(maskHash);
400  if (!rv)
401  return 0;
402  }
403  else if (!sig && BIO_puts(bp, "\n") <= 0)
404  return 0;
405  if (sig)
406  return X509_signature_dump(bp, sig, indent);
407  return 1;
408  }
409 
410 static int rsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
411  {
412  X509_ALGOR *alg = NULL;
413  switch (op)
414  {
415 
416  case ASN1_PKEY_CTRL_PKCS7_SIGN:
417  if (arg1 == 0)
418  PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, NULL, &alg);
419  break;
420 
421  case ASN1_PKEY_CTRL_PKCS7_ENCRYPT:
422  if (arg1 == 0)
423  PKCS7_RECIP_INFO_get0_alg(arg2, &alg);
424  break;
425 #ifndef OPENSSL_NO_CMS
426  case ASN1_PKEY_CTRL_CMS_SIGN:
427  if (arg1 == 0)
428  CMS_SignerInfo_get0_algs(arg2, NULL, NULL, NULL, &alg);
429  break;
430 
431  case ASN1_PKEY_CTRL_CMS_ENVELOPE:
432  if (arg1 == 0)
433  CMS_RecipientInfo_ktri_get0_algs(arg2, NULL, NULL, &alg);
434  break;
435 #endif
436 
437  case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
438  *(int *)arg2 = NID_sha1;
439  return 1;
440 
441  default:
442  return -2;
443 
444  }
445 
446  if (alg)
447  X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption),
448  V_ASN1_NULL, 0);
449 
450  return 1;
451 
452  }
453 
454 /* Customised RSA item verification routine. This is called
455  * when a signature is encountered requiring special handling. We
456  * currently only handle PSS.
457  */
458 
459 
460 static int rsa_item_verify(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
461  X509_ALGOR *sigalg, ASN1_BIT_STRING *sig,
462  EVP_PKEY *pkey)
463  {
464  int rv = -1;
465  int saltlen;
466  const EVP_MD *mgf1md = NULL, *md = NULL;
467  RSA_PSS_PARAMS *pss;
468  X509_ALGOR *maskHash;
469  EVP_PKEY_CTX *pkctx;
470  /* Sanity check: make sure it is PSS */
471  if (OBJ_obj2nid(sigalg->algorithm) != NID_rsassaPss)
472  {
473  RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_SIGNATURE_TYPE);
474  return -1;
475  }
476  /* Decode PSS parameters */
477  pss = rsa_pss_decode(sigalg, &maskHash);
478 
479  if (pss == NULL)
480  {
481  RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_INVALID_PSS_PARAMETERS);
482  goto err;
483  }
484  /* Check mask and lookup mask hash algorithm */
485  if (pss->maskGenAlgorithm)
486  {
487  if (OBJ_obj2nid(pss->maskGenAlgorithm->algorithm) != NID_mgf1)
488  {
489  RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_MASK_ALGORITHM);
490  goto err;
491  }
492  if (!maskHash)
493  {
494  RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_MASK_PARAMETER);
495  goto err;
496  }
497  mgf1md = EVP_get_digestbyobj(maskHash->algorithm);
498  if (mgf1md == NULL)
499  {
500  RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNKNOWN_MASK_DIGEST);
501  goto err;
502  }
503  }
504  else
505  mgf1md = EVP_sha1();
506 
507  if (pss->hashAlgorithm)
508  {
509  md = EVP_get_digestbyobj(pss->hashAlgorithm->algorithm);
510  if (md == NULL)
511  {
512  RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNKNOWN_PSS_DIGEST);
513  goto err;
514  }
515  }
516  else
517  md = EVP_sha1();
518 
519  if (pss->saltLength)
520  {
521  saltlen = ASN1_INTEGER_get(pss->saltLength);
522 
523  /* Could perform more salt length sanity checks but the main
524  * RSA routines will trap other invalid values anyway.
525  */
526  if (saltlen < 0)
527  {
528  RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_INVALID_SALT_LENGTH);
529  goto err;
530  }
531  }
532  else
533  saltlen = 20;
534 
535  /* low-level routines support only trailer field 0xbc (value 1)
536  * and PKCS#1 says we should reject any other value anyway.
537  */
538  if (pss->trailerField && ASN1_INTEGER_get(pss->trailerField) != 1)
539  {
540  RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_INVALID_TRAILER);
541  goto err;
542  }
543 
544  /* We have all parameters now set up context */
545 
546  if (!EVP_DigestVerifyInit(ctx, &pkctx, md, NULL, pkey))
547  goto err;
548 
549  if (EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_PSS_PADDING) <= 0)
550  goto err;
551 
552  if (EVP_PKEY_CTX_set_rsa_pss_saltlen(pkctx, saltlen) <= 0)
553  goto err;
554 
555  if (EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md) <= 0)
556  goto err;
557  /* Carry on */
558  rv = 2;
559 
560  err:
561  RSA_PSS_PARAMS_free(pss);
562  if (maskHash)
563  X509_ALGOR_free(maskHash);
564  return rv;
565  }
566 
567 static int rsa_item_sign(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
568  X509_ALGOR *alg1, X509_ALGOR *alg2,
569  ASN1_BIT_STRING *sig)
570  {
571  int pad_mode;
572  EVP_PKEY_CTX *pkctx = ctx->pctx;
573  if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0)
574  return 0;
575  if (pad_mode == RSA_PKCS1_PADDING)
576  return 2;
577  if (pad_mode == RSA_PKCS1_PSS_PADDING)
578  {
579  const EVP_MD *sigmd, *mgf1md;
580  RSA_PSS_PARAMS *pss = NULL;
581  X509_ALGOR *mgf1alg = NULL;
582  ASN1_STRING *os1 = NULL, *os2 = NULL;
583  EVP_PKEY *pk = EVP_PKEY_CTX_get0_pkey(pkctx);
584  int saltlen, rv = 0;
585  sigmd = EVP_MD_CTX_md(ctx);
586  if (EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) <= 0)
587  goto err;
588  if (!EVP_PKEY_CTX_get_rsa_pss_saltlen(pkctx, &saltlen))
589  goto err;
590  if (saltlen == -1)
591  saltlen = EVP_MD_size(sigmd);
592  else if (saltlen == -2)
593  {
594  saltlen = EVP_PKEY_size(pk) - EVP_MD_size(sigmd) - 2;
595  if (((EVP_PKEY_bits(pk) - 1) & 0x7) == 0)
596  saltlen--;
597  }
598  pss = RSA_PSS_PARAMS_new();
599  if (!pss)
600  goto err;
601  if (saltlen != 20)
602  {
603  pss->saltLength = ASN1_INTEGER_new();
604  if (!pss->saltLength)
605  goto err;
606  if (!ASN1_INTEGER_set(pss->saltLength, saltlen))
607  goto err;
608  }
609  if (EVP_MD_type(sigmd) != NID_sha1)
610  {
611  pss->hashAlgorithm = X509_ALGOR_new();
612  if (!pss->hashAlgorithm)
613  goto err;
614  X509_ALGOR_set_md(pss->hashAlgorithm, sigmd);
615  }
616  if (EVP_MD_type(mgf1md) != NID_sha1)
617  {
618  ASN1_STRING *stmp = NULL;
619  /* need to embed algorithm ID inside another */
620  mgf1alg = X509_ALGOR_new();
621  X509_ALGOR_set_md(mgf1alg, mgf1md);
622  if (!ASN1_item_pack(mgf1alg, ASN1_ITEM_rptr(X509_ALGOR),
623  &stmp))
624  goto err;
625  pss->maskGenAlgorithm = X509_ALGOR_new();
626  if (!pss->maskGenAlgorithm)
627  goto err;
628  X509_ALGOR_set0(pss->maskGenAlgorithm,
629  OBJ_nid2obj(NID_mgf1),
630  V_ASN1_SEQUENCE, stmp);
631  }
632  /* Finally create string with pss parameter encoding. */
633  if (!ASN1_item_pack(pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), &os1))
634  goto err;
635  if (alg2)
636  {
637  os2 = ASN1_STRING_dup(os1);
638  if (!os2)
639  goto err;
640  X509_ALGOR_set0(alg2, OBJ_nid2obj(NID_rsassaPss),
641  V_ASN1_SEQUENCE, os2);
642  }
643  X509_ALGOR_set0(alg1, OBJ_nid2obj(NID_rsassaPss),
644  V_ASN1_SEQUENCE, os1);
645  os1 = os2 = NULL;
646  rv = 3;
647  err:
648  if (mgf1alg)
649  X509_ALGOR_free(mgf1alg);
650  if (pss)
651  RSA_PSS_PARAMS_free(pss);
652  if (os1)
653  ASN1_STRING_free(os1);
654  return rv;
655 
656  }
657  return 2;
658  }
659 
660 const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[] =
661  {
662  {
663  EVP_PKEY_RSA,
664  EVP_PKEY_RSA,
665  ASN1_PKEY_SIGPARAM_NULL,
666 
667  "RSA",
668  "OpenSSL RSA method",
669 
670  rsa_pub_decode,
671  rsa_pub_encode,
672  rsa_pub_cmp,
673  rsa_pub_print,
674 
675  rsa_priv_decode,
676  rsa_priv_encode,
677  rsa_priv_print,
678 
679  int_rsa_size,
680  rsa_bits,
681 
682  0,0,0,0,0,0,
683 
684  rsa_sig_print,
685  int_rsa_free,
686  rsa_pkey_ctrl,
687  old_rsa_priv_decode,
688  old_rsa_priv_encode,
689  rsa_item_verify,
690  rsa_item_sign
691  },
692 
693  {
694  EVP_PKEY_RSA2,
695  EVP_PKEY_RSA,
696  ASN1_PKEY_ALIAS
697  }
698  };
Generated on Thu Jan 10 2013 09:53:38 for OpenSSL by   doxygen 1.8.2