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0f113f3e 1/*
b0edda11 2 * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
448be743 3 *
2039c421
RS		 4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
448be743
DSH		 8 */
9
10#include <stdio.h>
b39fc560 11#include "internal/cryptlib.h"
448be743
DSH		 12#include <openssl/asn1t.h>
13#include <openssl/x509.h>
1e26a8ba 14#include <openssl/bn.h>
3c27208f 15#include <openssl/cms.h>
5fe736e5 16#include "internal/asn1_int.h"
3aeb9348 17#include "internal/evp_int.h"
9862e9aa 18#include "rsa_locl.h"
448be743 19
e968561d 20#ifndef OPENSSL_NO_CMS
0574cadf
DSH		 21static int rsa_cms_sign(CMS_SignerInfo *si);
22static int rsa_cms_verify(CMS_SignerInfo *si);
23static int rsa_cms_decrypt(CMS_RecipientInfo *ri);
24static int rsa_cms_encrypt(CMS_RecipientInfo *ri);
e968561d 25#endif
0574cadf 26
b35b8d11
DSH		 27static RSA_PSS_PARAMS *rsa_pss_decode(const X509_ALGOR *alg);
28
42009ae8
DSH		 29/* Set any parameters associated with pkey */
30static int rsa_param_encode(const EVP_PKEY *pkey,
31 ASN1_STRING **pstr, int *pstrtype)
32{
33 const RSA *rsa = pkey->pkey.rsa;
52ad523c 34
42009ae8
DSH		 35 *pstr = NULL;
36 /* If RSA it's just NULL type */
37 if (pkey->ameth->pkey_id == EVP_PKEY_RSA) {
38 *pstrtype = V_ASN1_NULL;
39 return 1;
40 }
41 /* If no PSS parameters we omit parameters entirely */
42 if (rsa->pss == NULL) {
43 *pstrtype = V_ASN1_UNDEF;
44 return 1;
45 }
46 /* Encode PSS parameters */
f291138b 47 if (ASN1_item_pack(rsa->pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), pstr) == NULL)
42009ae8 48 return 0;
42009ae8
DSH		 49
50 *pstrtype = V_ASN1_SEQUENCE;
51 return 1;
52}
53/* Decode any parameters and set them in RSA structure */
54static int rsa_param_decode(RSA *rsa, const X509_ALGOR *alg)
55{
56 const ASN1_OBJECT *algoid;
57 const void *algp;
58 int algptype;
59
60 X509_ALGOR_get0(&algoid, &algptype, &algp, alg);
61 if (OBJ_obj2nid(algoid) == EVP_PKEY_RSA)
62 return 1;
63 if (algptype == V_ASN1_UNDEF)
64 return 1;
635fe50f
DSH		 65 if (algptype != V_ASN1_SEQUENCE) {
66 RSAerr(RSA_F_RSA_PARAM_DECODE, RSA_R_INVALID_PSS_PARAMETERS);
42009ae8 67 return 0;
635fe50f 68 }
b35b8d11 69 rsa->pss = rsa_pss_decode(alg);
42009ae8
DSH		 70 if (rsa->pss == NULL)
71 return 0;
72 return 1;
73}
74
6f81892e 75static int rsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey)
0f113f3e
MC		 76{
77 unsigned char *penc = NULL;
78 int penclen;
42009ae8
DSH		 79 ASN1_STRING *str;
80 int strtype;
52ad523c 81
42009ae8
DSH		 82 if (!rsa_param_encode(pkey, &str, &strtype))
83 return 0;
0f113f3e
MC		 84 penclen = i2d_RSAPublicKey(pkey->pkey.rsa, &penc);
85 if (penclen <= 0)
86 return 0;
42009ae8
DSH		 87 if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(pkey->ameth->pkey_id),
88 strtype, str, penc, penclen))
0f113f3e
MC		 89 return 1;
90
91 OPENSSL_free(penc);
92 return 0;
93}
448be743
DSH		 94
95static int rsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey)
0f113f3e
MC		 96{
97 const unsigned char *p;
98 int pklen;
42009ae8 99 X509_ALGOR *alg;
0f113f3e 100 RSA *rsa = NULL;
75ebbd9a 101
42009ae8 102 if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &alg, pubkey))
0f113f3e 103 return 0;
75ebbd9a 104 if ((rsa = d2i_RSAPublicKey(NULL, &p, pklen)) == NULL) {
0f113f3e
MC		 105 RSAerr(RSA_F_RSA_PUB_DECODE, ERR_R_RSA_LIB);
106 return 0;
107 }
42009ae8
DSH		 108 if (!rsa_param_decode(rsa, alg)) {
109 RSA_free(rsa);
110 return 0;
111 }
faa02fe2 112 EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, rsa);
0f113f3e
MC		 113 return 1;
114}
448be743 115
6f81892e 116static int rsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
0f113f3e
MC		 117{
118 if (BN_cmp(b->pkey.rsa->n, a->pkey.rsa->n) != 0
119 || BN_cmp(b->pkey.rsa->e, a->pkey.rsa->e) != 0)
120 return 0;
121 return 1;
122}
6f81892e 123
e4263314 124static int old_rsa_priv_decode(EVP_PKEY *pkey,
0f113f3e
MC		 125 const unsigned char **pder, int derlen)
126{
127 RSA *rsa;
75ebbd9a
RS		 128
129 if ((rsa = d2i_RSAPrivateKey(NULL, pder, derlen)) == NULL) {
0f113f3e
MC		 130 RSAerr(RSA_F_OLD_RSA_PRIV_DECODE, ERR_R_RSA_LIB);
131 return 0;
132 }
faa02fe2 133 EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, rsa);
0f113f3e
MC		 134 return 1;
135}
448be743 136
e4263314 137static int old_rsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder)
0f113f3e
MC		 138{
139 return i2d_RSAPrivateKey(pkey->pkey.rsa, pder);
140}
e4263314 141
6f81892e 142static int rsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey)
0f113f3e
MC		 143{
144 unsigned char *rk = NULL;
145 int rklen;
42009ae8
DSH		 146 ASN1_STRING *str;
147 int strtype;
52ad523c 148
42009ae8
DSH		 149 if (!rsa_param_encode(pkey, &str, &strtype))
150 return 0;
0f113f3e
MC		 151 rklen = i2d_RSAPrivateKey(pkey->pkey.rsa, &rk);
152
153 if (rklen <= 0) {
154 RSAerr(RSA_F_RSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE);
285c7d9c 155 ASN1_STRING_free(str);
0f113f3e
MC		 156 return 0;
157 }
158
faa02fe2 159 if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(pkey->ameth->pkey_id), 0,
42009ae8 160 strtype, str, rk, rklen)) {
0f113f3e 161 RSAerr(RSA_F_RSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE);
285c7d9c 162 ASN1_STRING_free(str);
0f113f3e
MC		 163 return 0;
164 }
165
166 return 1;
167}
448be743 168
245c6bc3 169static int rsa_priv_decode(EVP_PKEY *pkey, const PKCS8_PRIV_KEY_INFO *p8)
0f113f3e
MC		 170{
171 const unsigned char *p;
42009ae8 172 RSA *rsa;
0f113f3e 173 int pklen;
42009ae8
DSH		 174 const X509_ALGOR *alg;
175
176 if (!PKCS8_pkey_get0(NULL, &p, &pklen, &alg, p8))
177 return 0;
178 rsa = d2i_RSAPrivateKey(NULL, &p, pklen);
179 if (rsa == NULL) {
180 RSAerr(RSA_F_RSA_PRIV_DECODE, ERR_R_RSA_LIB);
181 return 0;
182 }
183 if (!rsa_param_decode(rsa, alg)) {
184 RSA_free(rsa);
0f113f3e 185 return 0;
42009ae8
DSH		 186 }
187 EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, rsa);
188 return 1;
0f113f3e 189}
e4263314 190
6f81892e 191static int int_rsa_size(const EVP_PKEY *pkey)
0f113f3e
MC		 192{
193 return RSA_size(pkey->pkey.rsa);
194}
6f81892e
DSH		 195
196static int rsa_bits(const EVP_PKEY *pkey)
0f113f3e
MC		 197{
198 return BN_num_bits(pkey->pkey.rsa->n);
199}
6f81892e 200
2514fa79 201static int rsa_security_bits(const EVP_PKEY *pkey)
0f113f3e
MC		 202{
203 return RSA_security_bits(pkey->pkey.rsa);
204}
2514fa79 205
6f81892e 206static void int_rsa_free(EVP_PKEY *pkey)
0f113f3e
MC		 207{
208 RSA_free(pkey->pkey.rsa);
209}
35208f36 210
9503ed8b
DSH		 211static X509_ALGOR *rsa_mgf1_decode(X509_ALGOR *alg)
212{
213 if (OBJ_obj2nid(alg->algorithm) != NID_mgf1)
214 return NULL;
215 return ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(X509_ALGOR),
216 alg->parameter);
217}
218
219static int rsa_pss_param_print(BIO *bp, int pss_key, RSA_PSS_PARAMS *pss,
220 int indent)
221{
222 int rv = 0;
223 X509_ALGOR *maskHash = NULL;
52ad523c 224
9503ed8b
DSH		 225 if (!BIO_indent(bp, indent, 128))
226 goto err;
227 if (pss_key) {
228 if (pss == NULL) {
229 if (BIO_puts(bp, "No PSS parameter restrictions\n") <= 0)
230 return 0;
231 return 1;
232 } else {
233 if (BIO_puts(bp, "PSS parameter restrictions:") <= 0)
234 return 0;
235 }
236 } else if (pss == NULL) {
237 if (BIO_puts(bp,"(INVALID PSS PARAMETERS)\n") <= 0)
238 return 0;
239 return 1;
240 }
241 if (BIO_puts(bp, "\n") <= 0)
242 goto err;
243 if (pss_key)
244 indent += 2;
245 if (!BIO_indent(bp, indent, 128))
246 goto err;
247 if (BIO_puts(bp, "Hash Algorithm: ") <= 0)
248 goto err;
249
250 if (pss->hashAlgorithm) {
251 if (i2a_ASN1_OBJECT(bp, pss->hashAlgorithm->algorithm) <= 0)
252 goto err;
90862ab4 253 } else if (BIO_puts(bp, "sha1 (default)") <= 0) {
9503ed8b 254 goto err;
90862ab4 255 }
9503ed8b
DSH		 256
257 if (BIO_puts(bp, "\n") <= 0)
258 goto err;
259
260 if (!BIO_indent(bp, indent, 128))
261 goto err;
262
263 if (BIO_puts(bp, "Mask Algorithm: ") <= 0)
264 goto err;
265 if (pss->maskGenAlgorithm) {
266 if (i2a_ASN1_OBJECT(bp, pss->maskGenAlgorithm->algorithm) <= 0)
267 goto err;
268 if (BIO_puts(bp, " with ") <= 0)
269 goto err;
270 maskHash = rsa_mgf1_decode(pss->maskGenAlgorithm);
271 if (maskHash != NULL) {
272 if (i2a_ASN1_OBJECT(bp, maskHash->algorithm) <= 0)
273 goto err;
90862ab4 274 } else if (BIO_puts(bp, "INVALID") <= 0) {
9503ed8b 275 goto err;
90862ab4
PY		 276 }
277 } else if (BIO_puts(bp, "mgf1 with sha1 (default)") <= 0) {
9503ed8b 278 goto err;
90862ab4 279 }
9503ed8b
DSH		 280 BIO_puts(bp, "\n");
281
282 if (!BIO_indent(bp, indent, 128))
283 goto err;
284 if (BIO_printf(bp, "%s Salt Length: 0x", pss_key ? "Minimum" : "") <= 0)
285 goto err;
286 if (pss->saltLength) {
287 if (i2a_ASN1_INTEGER(bp, pss->saltLength) <= 0)
288 goto err;
90862ab4 289 } else if (BIO_puts(bp, "14 (default)") <= 0) {
9503ed8b 290 goto err;
90862ab4 291 }
9503ed8b
DSH		 292 BIO_puts(bp, "\n");
293
294 if (!BIO_indent(bp, indent, 128))
295 goto err;
296 if (BIO_puts(bp, "Trailer Field: 0x") <= 0)
297 goto err;
298 if (pss->trailerField) {
299 if (i2a_ASN1_INTEGER(bp, pss->trailerField) <= 0)
300 goto err;
90862ab4 301 } else if (BIO_puts(bp, "BC (default)") <= 0) {
9503ed8b 302 goto err;
90862ab4 303 }
9503ed8b
DSH		 304 BIO_puts(bp, "\n");
305
306 rv = 1;
307
308 err:
309 X509_ALGOR_free(maskHash);
310 return rv;
311
312}
313
314static int pkey_rsa_print(BIO *bp, const EVP_PKEY *pkey, int off, int priv)
0f113f3e 315{
9503ed8b 316 const RSA *x = pkey->pkey.rsa;
0f113f3e
MC		 317 char *str;
318 const char *s;
665d899f 319 int ret = 0, mod_len = 0, ex_primes;
0f113f3e
MC		 320
321 if (x->n != NULL)
322 mod_len = BN_num_bits(x->n);
665d899f 323 ex_primes = sk_RSA_PRIME_INFO_num(x->prime_infos);
0f113f3e
MC		 324
325 if (!BIO_indent(bp, off, 128))
326 goto err;
327
87ee7b22 328 if (BIO_printf(bp, "%s ", pkey_is_pss(pkey) ? "RSA-PSS" : "RSA") <= 0)
9503ed8b
DSH		 329 goto err;
330
0f113f3e 331 if (priv && x->d) {
665d899f
PY		 332 if (BIO_printf(bp, "Private-Key: (%d bit, %d primes)\n",
333 mod_len, ex_primes <= 0 ? 2 : ex_primes + 2) <= 0)
0f113f3e
MC		 334 goto err;
335 str = "modulus:";
336 s = "publicExponent:";
337 } else {
a773b52a 338 if (BIO_printf(bp, "Public-Key: (%d bit)\n", mod_len) <= 0)
0f113f3e
MC		 339 goto err;
340 str = "Modulus:";
341 s = "Exponent:";
342 }
a773b52a 343 if (!ASN1_bn_print(bp, str, x->n, NULL, off))
0f113f3e 344 goto err;
a773b52a 345 if (!ASN1_bn_print(bp, s, x->e, NULL, off))
0f113f3e
MC		 346 goto err;
347 if (priv) {
665d899f
PY		 348 int i;
349
a773b52a 350 if (!ASN1_bn_print(bp, "privateExponent:", x->d, NULL, off))
0f113f3e 351 goto err;
a773b52a 352 if (!ASN1_bn_print(bp, "prime1:", x->p, NULL, off))
0f113f3e 353 goto err;
a773b52a 354 if (!ASN1_bn_print(bp, "prime2:", x->q, NULL, off))
0f113f3e 355 goto err;
a773b52a 356 if (!ASN1_bn_print(bp, "exponent1:", x->dmp1, NULL, off))
0f113f3e 357 goto err;
a773b52a 358 if (!ASN1_bn_print(bp, "exponent2:", x->dmq1, NULL, off))
0f113f3e 359 goto err;
a773b52a 360 if (!ASN1_bn_print(bp, "coefficient:", x->iqmp, NULL, off))
0f113f3e 361 goto err;
665d899f
PY		 362 for (i = 0; i < sk_RSA_PRIME_INFO_num(x->prime_infos); i++) {
363 /* print multi-prime info */
364 BIGNUM *bn = NULL;
365 RSA_PRIME_INFO *pinfo;
366 int j;
367
368 pinfo = sk_RSA_PRIME_INFO_value(x->prime_infos, i);
369 for (j = 0; j < 3; j++) {
370 if (!BIO_indent(bp, off, 128))
371 goto err;
372 switch (j) {
373 case 0:
374 if (BIO_printf(bp, "prime%d:", i + 3) <= 0)
375 goto err;
376 bn = pinfo->r;
377 break;
378 case 1:
379 if (BIO_printf(bp, "exponent%d:", i + 3) <= 0)
380 goto err;
381 bn = pinfo->d;
382 break;
383 case 2:
384 if (BIO_printf(bp, "coefficient%d:", i + 3) <= 0)
385 goto err;
386 bn = pinfo->t;
387 break;
388 default:
389 break;
390 }
391 if (!ASN1_bn_print(bp, "", bn, NULL, off))
392 goto err;
393 }
394 }
0f113f3e 395 }
87ee7b22 396 if (pkey_is_pss(pkey) && !rsa_pss_param_print(bp, 1, x->pss, off))
9503ed8b 397 goto err;
0f113f3e
MC		 398 ret = 1;
399 err:
9503ed8b 400 return ret;
0f113f3e 401}
35208f36
DSH		 402
403static int rsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
0f113f3e
MC		 404 ASN1_PCTX *ctx)
405{
9503ed8b 406 return pkey_rsa_print(bp, pkey, indent, 0);
0f113f3e 407}
35208f36
DSH		 408
409static int rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
0f113f3e
MC		 410 ASN1_PCTX *ctx)
411{
9503ed8b 412 return pkey_rsa_print(bp, pkey, indent, 1);
0f113f3e 413}
0574cadf 414
6745a1ff 415static RSA_PSS_PARAMS *rsa_pss_decode(const X509_ALGOR *alg)
0f113f3e 416{
0f113f3e
MC		 417 RSA_PSS_PARAMS *pss;
418
e93c8748
DSH		 419 pss = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(RSA_PSS_PARAMS),
420 alg->parameter);
0f113f3e 421
6745a1ff 422 if (pss == NULL)
0f113f3e
MC		 423 return NULL;
424
6745a1ff
DSH		 425 if (pss->maskGenAlgorithm != NULL) {
426 pss->maskHash = rsa_mgf1_decode(pss->maskGenAlgorithm);
427 if (pss->maskHash == NULL) {
428 RSA_PSS_PARAMS_free(pss);
429 return NULL;
430 }
431 }
0f113f3e
MC		 432
433 return pss;
434}
435
ff04bbe3 436static int rsa_sig_print(BIO *bp, const X509_ALGOR *sigalg,
0f113f3e
MC		 437 const ASN1_STRING *sig, int indent, ASN1_PCTX *pctx)
438{
ffc6fad5 439 if (OBJ_obj2nid(sigalg->algorithm) == EVP_PKEY_RSA_PSS) {
0f113f3e 440 int rv;
52ad523c 441 RSA_PSS_PARAMS *pss = rsa_pss_decode(sigalg);
c82bafc5 442
9503ed8b 443 rv = rsa_pss_param_print(bp, 0, pss, indent);
25aaa98a 444 RSA_PSS_PARAMS_free(pss);
0f113f3e
MC		 445 if (!rv)
446 return 0;
52ad523c 447 } else if (!sig && BIO_puts(bp, "\n") <= 0) {
0f113f3e 448 return 0;
52ad523c 449 }
0f113f3e
MC		 450 if (sig)
451 return X509_signature_dump(bp, sig, indent);
452 return 1;
453}
492a9e24
DSH		 454
455static int rsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
0f113f3e
MC		 456{
457 X509_ALGOR *alg = NULL;
52ad523c 458
0f113f3e
MC		 459 switch (op) {
460
461 case ASN1_PKEY_CTRL_PKCS7_SIGN:
462 if (arg1 == 0)
463 PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, NULL, &alg);
464 break;
465
466 case ASN1_PKEY_CTRL_PKCS7_ENCRYPT:
53d2260c
DSH		 467 if (pkey_is_pss(pkey))
468 return -2;
0f113f3e
MC		 469 if (arg1 == 0)
470 PKCS7_RECIP_INFO_get0_alg(arg2, &alg);
471 break;
8931b30d 472#ifndef OPENSSL_NO_CMS
0f113f3e
MC		 473 case ASN1_PKEY_CTRL_CMS_SIGN:
474 if (arg1 == 0)
475 return rsa_cms_sign(arg2);
476 else if (arg1 == 1)
477 return rsa_cms_verify(arg2);
478 break;
479
480 case ASN1_PKEY_CTRL_CMS_ENVELOPE:
53d2260c
DSH		 481 if (pkey_is_pss(pkey))
482 return -2;
0f113f3e
MC		 483 if (arg1 == 0)
484 return rsa_cms_encrypt(arg2);
485 else if (arg1 == 1)
486 return rsa_cms_decrypt(arg2);
487 break;
488
489 case ASN1_PKEY_CTRL_CMS_RI_TYPE:
53d2260c
DSH		 490 if (pkey_is_pss(pkey))
491 return -2;
0f113f3e
MC		 492 *(int *)arg2 = CMS_RECIPINFO_TRANS;
493 return 1;
8931b30d 494#endif
a78568b7 495
0f113f3e
MC		 496 case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
497 *(int *)arg2 = NID_sha256;
498 return 1;
03919683 499
0f113f3e
MC		 500 default:
501 return -2;
492a9e24 502
0f113f3e 503 }
492a9e24 504
0f113f3e
MC		 505 if (alg)
506 X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0);
4f1aa191 507
0f113f3e 508 return 1;
4f1aa191 509
0f113f3e 510}
492a9e24 511
0574cadf
DSH		 512/* allocate and set algorithm ID from EVP_MD, default SHA1 */
513static int rsa_md_to_algor(X509_ALGOR **palg, const EVP_MD *md)
0f113f3e 514{
47e42b3c 515 if (md == NULL || EVP_MD_type(md) == NID_sha1)
0f113f3e
MC		 516 return 1;
517 *palg = X509_ALGOR_new();
90945fa3 518 if (*palg == NULL)
0f113f3e
MC		 519 return 0;
520 X509_ALGOR_set_md(*palg, md);
521 return 1;
522}
0574cadf
DSH		 523
524/* Allocate and set MGF1 algorithm ID from EVP_MD */
525static int rsa_md_to_mgf1(X509_ALGOR **palg, const EVP_MD *mgf1md)
0f113f3e
MC		 526{
527 X509_ALGOR *algtmp = NULL;
528 ASN1_STRING *stmp = NULL;
52ad523c 529
0f113f3e 530 *palg = NULL;
47e42b3c 531 if (mgf1md == NULL || EVP_MD_type(mgf1md) == NID_sha1)
0f113f3e
MC		 532 return 1;
533 /* need to embed algorithm ID inside another */
534 if (!rsa_md_to_algor(&algtmp, mgf1md))
535 goto err;
f291138b 536 if (ASN1_item_pack(algtmp, ASN1_ITEM_rptr(X509_ALGOR), &stmp) == NULL)
0f113f3e
MC		 537 goto err;
538 *palg = X509_ALGOR_new();
90945fa3 539 if (*palg == NULL)
0f113f3e
MC		 540 goto err;
541 X509_ALGOR_set0(*palg, OBJ_nid2obj(NID_mgf1), V_ASN1_SEQUENCE, stmp);
542 stmp = NULL;
543 err:
0dfb9398 544 ASN1_STRING_free(stmp);
222561fe 545 X509_ALGOR_free(algtmp);
0f113f3e
MC		 546 if (*palg)
547 return 1;
548 return 0;
549}
0574cadf
DSH		 550
551/* convert algorithm ID to EVP_MD, default SHA1 */
552static const EVP_MD *rsa_algor_to_md(X509_ALGOR *alg)
0f113f3e
MC		 553{
554 const EVP_MD *md;
52ad523c 555
0f113f3e
MC		 556 if (!alg)
557 return EVP_sha1();
558 md = EVP_get_digestbyobj(alg->algorithm);
559 if (md == NULL)
560 RSAerr(RSA_F_RSA_ALGOR_TO_MD, RSA_R_UNKNOWN_DIGEST);
561 return md;
562}
563
0f113f3e 564/*
47e42b3c 565 * Convert EVP_PKEY_CTX in PSS mode into corresponding algorithm parameter,
0574cadf 566 * suitable for setting an AlgorithmIdentifier.
31904ecd
DSH		 567 */
568
47e42b3c 569static RSA_PSS_PARAMS *rsa_ctx_to_pss(EVP_PKEY_CTX *pkctx)
0f113f3e
MC		 570{
571 const EVP_MD *sigmd, *mgf1md;
0f113f3e 572 EVP_PKEY *pk = EVP_PKEY_CTX_get0_pkey(pkctx);
47e42b3c 573 int saltlen;
52ad523c 574
0f113f3e 575 if (EVP_PKEY_CTX_get_signature_md(pkctx, &sigmd) <= 0)
47e42b3c 576 return NULL;
0f113f3e 577 if (EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) <= 0)
47e42b3c 578 return NULL;
0f113f3e 579 if (!EVP_PKEY_CTX_get_rsa_pss_saltlen(pkctx, &saltlen))
47e42b3c 580 return NULL;
90862ab4 581 if (saltlen == -1) {
0f113f3e 582 saltlen = EVP_MD_size(sigmd);
90862ab4 583 } else if (saltlen == -2) {
0f113f3e 584 saltlen = EVP_PKEY_size(pk) - EVP_MD_size(sigmd) - 2;
137096a7 585 if ((EVP_PKEY_bits(pk) & 0x7) == 1)
0f113f3e
MC		 586 saltlen--;
587 }
47e42b3c
DSH		 588
589 return rsa_pss_params_create(sigmd, mgf1md, saltlen);
590}
591
592RSA_PSS_PARAMS *rsa_pss_params_create(const EVP_MD *sigmd,
593 const EVP_MD *mgf1md, int saltlen)
594{
595 RSA_PSS_PARAMS *pss = RSA_PSS_PARAMS_new();
52ad523c 596
90945fa3 597 if (pss == NULL)
0f113f3e
MC		 598 goto err;
599 if (saltlen != 20) {
600 pss->saltLength = ASN1_INTEGER_new();
90945fa3 601 if (pss->saltLength == NULL)
0f113f3e
MC		 602 goto err;
603 if (!ASN1_INTEGER_set(pss->saltLength, saltlen))
604 goto err;
605 }
606 if (!rsa_md_to_algor(&pss->hashAlgorithm, sigmd))
607 goto err;
47e42b3c 608 if (mgf1md == NULL)
b6b885c6 609 mgf1md = sigmd;
0f113f3e
MC		 610 if (!rsa_md_to_mgf1(&pss->maskGenAlgorithm, mgf1md))
611 goto err;
74753357
DSH		 612 if (!rsa_md_to_algor(&pss->maskHash, mgf1md))
613 goto err;
47e42b3c 614 return pss;
0f113f3e 615 err:
25aaa98a 616 RSA_PSS_PARAMS_free(pss);
0f113f3e
MC		 617 return NULL;
618}
619
47e42b3c
DSH		 620static ASN1_STRING *rsa_ctx_to_pss_string(EVP_PKEY_CTX *pkctx)
621{
622 RSA_PSS_PARAMS *pss = rsa_ctx_to_pss(pkctx);
f291138b 623 ASN1_STRING *os;
52ad523c 624
47e42b3c
DSH		 625 if (pss == NULL)
626 return NULL;
627
f291138b 628 os = ASN1_item_pack(pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), NULL);
47e42b3c
DSH		 629 RSA_PSS_PARAMS_free(pss);
630 return os;
631}
632
0f113f3e
MC		 633/*
634 * From PSS AlgorithmIdentifier set public key parameters. If pkey isn't NULL
0d4fb843 635 * then the EVP_MD_CTX is setup and initialised. If it is NULL parameters are
0f113f3e 636 * passed to pkctx instead.
0574cadf 637 */
31904ecd 638
0574cadf 639static int rsa_pss_to_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pkctx,
0f113f3e
MC		 640 X509_ALGOR *sigalg, EVP_PKEY *pkey)
641{
642 int rv = -1;
643 int saltlen;
644 const EVP_MD *mgf1md = NULL, *md = NULL;
645 RSA_PSS_PARAMS *pss;
52ad523c 646
0f113f3e 647 /* Sanity check: make sure it is PSS */
ffc6fad5 648 if (OBJ_obj2nid(sigalg->algorithm) != EVP_PKEY_RSA_PSS) {
0f113f3e
MC		 649 RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_UNSUPPORTED_SIGNATURE_TYPE);
650 return -1;
651 }
652 /* Decode PSS parameters */
6745a1ff 653 pss = rsa_pss_decode(sigalg);
0f113f3e 654
cfd81c6d 655 if (!rsa_pss_get_param(pss, &md, &mgf1md, &saltlen)) {
0f113f3e
MC		 656 RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_INVALID_PSS_PARAMETERS);
657 goto err;
658 }
0f113f3e
MC		 659
660 /* We have all parameters now set up context */
0f113f3e
MC		 661 if (pkey) {
662 if (!EVP_DigestVerifyInit(ctx, &pkctx, md, NULL, pkey))
663 goto err;
664 } else {
665 const EVP_MD *checkmd;
666 if (EVP_PKEY_CTX_get_signature_md(pkctx, &checkmd) <= 0)
667 goto err;
668 if (EVP_MD_type(md) != EVP_MD_type(checkmd)) {
669 RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_DIGEST_DOES_NOT_MATCH);
670 goto err;
671 }
672 }
673
674 if (EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_PSS_PADDING) <= 0)
675 goto err;
676
677 if (EVP_PKEY_CTX_set_rsa_pss_saltlen(pkctx, saltlen) <= 0)
678 goto err;
679
680 if (EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md) <= 0)
681 goto err;
682 /* Carry on */
683 rv = 1;
684
685 err:
686 RSA_PSS_PARAMS_free(pss);
0f113f3e
MC		 687 return rv;
688}
492a9e24 689
cfd81c6d
DSH		 690int rsa_pss_get_param(const RSA_PSS_PARAMS *pss, const EVP_MD **pmd,
691 const EVP_MD **pmgf1md, int *psaltlen)
692{
693 if (pss == NULL)
694 return 0;
695 *pmd = rsa_algor_to_md(pss->hashAlgorithm);
696 if (*pmd == NULL)
697 return 0;
698 *pmgf1md = rsa_algor_to_md(pss->maskHash);
699 if (*pmgf1md == NULL)
700 return 0;
701 if (pss->saltLength) {
702 *psaltlen = ASN1_INTEGER_get(pss->saltLength);
703 if (*psaltlen < 0) {
704 RSAerr(RSA_F_RSA_PSS_GET_PARAM, RSA_R_INVALID_SALT_LENGTH);
705 return 0;
706 }
c82bafc5 707 } else {
cfd81c6d 708 *psaltlen = 20;
c82bafc5 709 }
cfd81c6d
DSH		 710
711 /*
712 * low-level routines support only trailer field 0xbc (value 1) and
713 * PKCS#1 says we should reject any other value anyway.
714 */
715 if (pss->trailerField && ASN1_INTEGER_get(pss->trailerField) != 1) {
716 RSAerr(RSA_F_RSA_PSS_GET_PARAM, RSA_R_INVALID_TRAILER);
b6b885c6 717 return 0;
cfd81c6d
DSH		 718 }
719
720 return 1;
721}
722
e968561d 723#ifndef OPENSSL_NO_CMS
0574cadf 724static int rsa_cms_verify(CMS_SignerInfo *si)
0f113f3e
MC		 725{
726 int nid, nid2;
727 X509_ALGOR *alg;
728 EVP_PKEY_CTX *pkctx = CMS_SignerInfo_get0_pkey_ctx(si);
52ad523c 729
0f113f3e
MC		 730 CMS_SignerInfo_get0_algs(si, NULL, NULL, NULL, &alg);
731 nid = OBJ_obj2nid(alg->algorithm);
ffc6fad5 732 if (nid == EVP_PKEY_RSA_PSS)
0f113f3e 733 return rsa_pss_to_ctx(NULL, pkctx, alg, NULL);
08be0331
DSH		 734 /* Only PSS allowed for PSS keys */
735 if (pkey_ctx_is_pss(pkctx)) {
736 RSAerr(RSA_F_RSA_CMS_VERIFY, RSA_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE);
737 return 0;
738 }
739 if (nid == NID_rsaEncryption)
740 return 1;
0f113f3e
MC		 741 /* Workaround for some implementation that use a signature OID */
742 if (OBJ_find_sigid_algs(nid, NULL, &nid2)) {
743 if (nid2 == NID_rsaEncryption)
744 return 1;
745 }
746 return 0;
747}
e968561d 748#endif
0f113f3e
MC		 749
750/*
751 * Customised RSA item verification routine. This is called when a signature
752 * is encountered requiring special handling. We currently only handle PSS.
0574cadf
DSH		 753 */
754
0574cadf 755static int rsa_item_verify(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
0f113f3e
MC		 756 X509_ALGOR *sigalg, ASN1_BIT_STRING *sig,
757 EVP_PKEY *pkey)
758{
759 /* Sanity check: make sure it is PSS */
ffc6fad5 760 if (OBJ_obj2nid(sigalg->algorithm) != EVP_PKEY_RSA_PSS) {
0f113f3e
MC		 761 RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_SIGNATURE_TYPE);
762 return -1;
763 }
09f06923 764 if (rsa_pss_to_ctx(ctx, NULL, sigalg, pkey) > 0) {
0f113f3e
MC		 765 /* Carry on */
766 return 2;
09f06923 767 }
0f113f3e
MC		 768 return -1;
769}
0574cadf 770
e968561d 771#ifndef OPENSSL_NO_CMS
0574cadf 772static int rsa_cms_sign(CMS_SignerInfo *si)
0f113f3e
MC		 773{
774 int pad_mode = RSA_PKCS1_PADDING;
775 X509_ALGOR *alg;
776 EVP_PKEY_CTX *pkctx = CMS_SignerInfo_get0_pkey_ctx(si);
777 ASN1_STRING *os = NULL;
52ad523c 778
0f113f3e
MC		 779 CMS_SignerInfo_get0_algs(si, NULL, NULL, NULL, &alg);
780 if (pkctx) {
781 if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0)
782 return 0;
783 }
784 if (pad_mode == RSA_PKCS1_PADDING) {
785 X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0);
786 return 1;
787 }
788 /* We don't support it */
789 if (pad_mode != RSA_PKCS1_PSS_PADDING)
790 return 0;
47e42b3c 791 os = rsa_ctx_to_pss_string(pkctx);
0f113f3e
MC		 792 if (!os)
793 return 0;
ffc6fad5 794 X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_PKEY_RSA_PSS), V_ASN1_SEQUENCE, os);
0f113f3e
MC		 795 return 1;
796}
e968561d 797#endif
0574cadf 798
17c63d1c 799static int rsa_item_sign(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
0f113f3e
MC		 800 X509_ALGOR *alg1, X509_ALGOR *alg2,
801 ASN1_BIT_STRING *sig)
802{
803 int pad_mode;
6e59a892 804 EVP_PKEY_CTX *pkctx = EVP_MD_CTX_pkey_ctx(ctx);
52ad523c 805
0f113f3e
MC		 806 if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0)
807 return 0;
808 if (pad_mode == RSA_PKCS1_PADDING)
809 return 2;
810 if (pad_mode == RSA_PKCS1_PSS_PADDING) {
811 ASN1_STRING *os1 = NULL;
47e42b3c 812 os1 = rsa_ctx_to_pss_string(pkctx);
0f113f3e
MC		 813 if (!os1)
814 return 0;
815 /* Duplicate parameters if we have to */
816 if (alg2) {
817 ASN1_STRING *os2 = ASN1_STRING_dup(os1);
818 if (!os2) {
819 ASN1_STRING_free(os1);
820 return 0;
821 }
ffc6fad5 822 X509_ALGOR_set0(alg2, OBJ_nid2obj(EVP_PKEY_RSA_PSS),
0f113f3e
MC		 823 V_ASN1_SEQUENCE, os2);
824 }
ffc6fad5 825 X509_ALGOR_set0(alg1, OBJ_nid2obj(EVP_PKEY_RSA_PSS),
0f113f3e
MC		 826 V_ASN1_SEQUENCE, os1);
827 return 3;
828 }
829 return 2;
830}
17c63d1c 831
629e369c
DSH		 832static int rsa_sig_info_set(X509_SIG_INFO *siginf, const X509_ALGOR *sigalg,
833 const ASN1_STRING *sig)
834{
835 int rv = 0;
836 int mdnid, saltlen;
837 uint32_t flags;
838 const EVP_MD *mgf1md = NULL, *md = NULL;
839 RSA_PSS_PARAMS *pss;
840
841 /* Sanity check: make sure it is PSS */
842 if (OBJ_obj2nid(sigalg->algorithm) != EVP_PKEY_RSA_PSS)
843 return 0;
844 /* Decode PSS parameters */
845 pss = rsa_pss_decode(sigalg);
846 if (!rsa_pss_get_param(pss, &md, &mgf1md, &saltlen))
847 goto err;
848 mdnid = EVP_MD_type(md);
849 /*
850 * For TLS need SHA256, SHA384 or SHA512, digest and MGF1 digest must
851 * match and salt length must equal digest size
852 */
853 if ((mdnid == NID_sha256 || mdnid == NID_sha384 || mdnid == NID_sha512)
854 && mdnid == EVP_MD_type(mgf1md) && saltlen == EVP_MD_size(md))
855 flags = X509_SIG_INFO_TLS;
856 else
857 flags = 0;
858 /* Note: security bits half number of digest bits */
859 X509_SIG_INFO_set(siginf, mdnid, EVP_PKEY_RSA_PSS, EVP_MD_size(md) * 4,
860 flags);
861 rv = 1;
862 err:
863 RSA_PSS_PARAMS_free(pss);
864 return rv;
865}
866
e968561d 867#ifndef OPENSSL_NO_CMS
6745a1ff 868static RSA_OAEP_PARAMS *rsa_oaep_decode(const X509_ALGOR *alg)
0f113f3e 869{
6745a1ff 870 RSA_OAEP_PARAMS *oaep;
0574cadf 871
6745a1ff 872 oaep = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(RSA_OAEP_PARAMS),
52ad523c 873 alg->parameter);
0574cadf 874
6745a1ff 875 if (oaep == NULL)
0f113f3e 876 return NULL;
0574cadf 877
6745a1ff
DSH		 878 if (oaep->maskGenFunc != NULL) {
879 oaep->maskHash = rsa_mgf1_decode(oaep->maskGenFunc);
880 if (oaep->maskHash == NULL) {
881 RSA_OAEP_PARAMS_free(oaep);
882 return NULL;
883 }
884 }
885 return oaep;
0f113f3e 886}
0574cadf
DSH		 887
888static int rsa_cms_decrypt(CMS_RecipientInfo *ri)
0f113f3e
MC		 889{
890 EVP_PKEY_CTX *pkctx;
891 X509_ALGOR *cmsalg;
892 int nid;
893 int rv = -1;
894 unsigned char *label = NULL;
895 int labellen = 0;
896 const EVP_MD *mgf1md = NULL, *md = NULL;
897 RSA_OAEP_PARAMS *oaep;
52ad523c 898
0f113f3e 899 pkctx = CMS_RecipientInfo_get0_pkey_ctx(ri);
52ad523c 900 if (pkctx == NULL)
0f113f3e
MC		 901 return 0;
902 if (!CMS_RecipientInfo_ktri_get0_algs(ri, NULL, NULL, &cmsalg))
903 return -1;
904 nid = OBJ_obj2nid(cmsalg->algorithm);
905 if (nid == NID_rsaEncryption)
906 return 1;
907 if (nid != NID_rsaesOaep) {
908 RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_UNSUPPORTED_ENCRYPTION_TYPE);
909 return -1;
910 }
911 /* Decode OAEP parameters */
6745a1ff 912 oaep = rsa_oaep_decode(cmsalg);
0f113f3e
MC		 913
914 if (oaep == NULL) {
915 RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_INVALID_OAEP_PARAMETERS);
916 goto err;
917 }
918
6745a1ff 919 mgf1md = rsa_algor_to_md(oaep->maskHash);
52ad523c 920 if (mgf1md == NULL)
0f113f3e
MC		 921 goto err;
922 md = rsa_algor_to_md(oaep->hashFunc);
52ad523c 923 if (md == NULL)
0f113f3e
MC		 924 goto err;
925
52ad523c 926 if (oaep->pSourceFunc != NULL) {
0f113f3e 927 X509_ALGOR *plab = oaep->pSourceFunc;
52ad523c 928
0f113f3e
MC		 929 if (OBJ_obj2nid(plab->algorithm) != NID_pSpecified) {
930 RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_UNSUPPORTED_LABEL_SOURCE);
931 goto err;
932 }
933 if (plab->parameter->type != V_ASN1_OCTET_STRING) {
934 RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_INVALID_LABEL);
935 goto err;
936 }
937
938 label = plab->parameter->value.octet_string->data;
939 /* Stop label being freed when OAEP parameters are freed */
940 plab->parameter->value.octet_string->data = NULL;
941 labellen = plab->parameter->value.octet_string->length;
942 }
943
944 if (EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_OAEP_PADDING) <= 0)
945 goto err;
946 if (EVP_PKEY_CTX_set_rsa_oaep_md(pkctx, md) <= 0)
947 goto err;
948 if (EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md) <= 0)
949 goto err;
950 if (EVP_PKEY_CTX_set0_rsa_oaep_label(pkctx, label, labellen) <= 0)
951 goto err;
952 /* Carry on */
953 rv = 1;
954
955 err:
956 RSA_OAEP_PARAMS_free(oaep);
0f113f3e
MC		 957 return rv;
958}
0574cadf
DSH		 959
960static int rsa_cms_encrypt(CMS_RecipientInfo *ri)
0f113f3e
MC		 961{
962 const EVP_MD *md, *mgf1md;
963 RSA_OAEP_PARAMS *oaep = NULL;
964 ASN1_STRING *os = NULL;
965 X509_ALGOR *alg;
966 EVP_PKEY_CTX *pkctx = CMS_RecipientInfo_get0_pkey_ctx(ri);
967 int pad_mode = RSA_PKCS1_PADDING, rv = 0, labellen;
968 unsigned char *label;
52ad523c 969
178989b4
BS		 970 if (CMS_RecipientInfo_ktri_get0_algs(ri, NULL, NULL, &alg) <= 0)
971 return 0;
0f113f3e
MC		 972 if (pkctx) {
973 if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0)
974 return 0;
975 }
976 if (pad_mode == RSA_PKCS1_PADDING) {
977 X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0);
978 return 1;
979 }
980 /* Not supported */
981 if (pad_mode != RSA_PKCS1_OAEP_PADDING)
982 return 0;
983 if (EVP_PKEY_CTX_get_rsa_oaep_md(pkctx, &md) <= 0)
984 goto err;
985 if (EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) <= 0)
986 goto err;
987 labellen = EVP_PKEY_CTX_get0_rsa_oaep_label(pkctx, &label);
988 if (labellen < 0)
989 goto err;
990 oaep = RSA_OAEP_PARAMS_new();
90945fa3 991 if (oaep == NULL)
0f113f3e
MC		 992 goto err;
993 if (!rsa_md_to_algor(&oaep->hashFunc, md))
994 goto err;
995 if (!rsa_md_to_mgf1(&oaep->maskGenFunc, mgf1md))
996 goto err;
997 if (labellen > 0) {
5e8129f2 998 ASN1_OCTET_STRING *los;
0f113f3e 999 oaep->pSourceFunc = X509_ALGOR_new();
90945fa3 1000 if (oaep->pSourceFunc == NULL)
0f113f3e 1001 goto err;
5e8129f2 1002 los = ASN1_OCTET_STRING_new();
90945fa3 1003 if (los == NULL)
0f113f3e
MC		 1004 goto err;
1005 if (!ASN1_OCTET_STRING_set(los, label, labellen)) {
1006 ASN1_OCTET_STRING_free(los);
1007 goto err;
1008 }
1009 X509_ALGOR_set0(oaep->pSourceFunc, OBJ_nid2obj(NID_pSpecified),
1010 V_ASN1_OCTET_STRING, los);
1011 }
1012 /* create string with pss parameter encoding. */
1013 if (!ASN1_item_pack(oaep, ASN1_ITEM_rptr(RSA_OAEP_PARAMS), &os))
1014 goto err;
1015 X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaesOaep), V_ASN1_SEQUENCE, os);
1016 os = NULL;
1017 rv = 1;
1018 err:
25aaa98a 1019 RSA_OAEP_PARAMS_free(oaep);
0dfb9398 1020 ASN1_STRING_free(os);
0f113f3e
MC		 1021 return rv;
1022}
e968561d 1023#endif
0f113f3e 1024
2aee35d3
PY		 1025static int rsa_pkey_check(const EVP_PKEY *pkey)
1026{
1027 return RSA_check_key_ex(pkey->pkey.rsa, NULL);
1028}
1029
578b5514 1030const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[2] = {
0f113f3e
MC		 1031 {
1032 EVP_PKEY_RSA,
1033 EVP_PKEY_RSA,
1034 ASN1_PKEY_SIGPARAM_NULL,
1035
1036 "RSA",
1037 "OpenSSL RSA method",
1038
1039 rsa_pub_decode,
1040 rsa_pub_encode,
1041 rsa_pub_cmp,
1042 rsa_pub_print,
1043
1044 rsa_priv_decode,
1045 rsa_priv_encode,
1046 rsa_priv_print,
1047
1048 int_rsa_size,
1049 rsa_bits,
1050 rsa_security_bits,
1051
1052 0, 0, 0, 0, 0, 0,
1053
1054 rsa_sig_print,
1055 int_rsa_free,
1056 rsa_pkey_ctrl,
1057 old_rsa_priv_decode,
1058 old_rsa_priv_encode,
1059 rsa_item_verify,
629e369c 1060 rsa_item_sign,
2aee35d3
PY		 1061 rsa_sig_info_set,
1062 rsa_pkey_check
629e369c 1063 },
0f113f3e
MC		 1064
1065 {
1066 EVP_PKEY_RSA2,
1067 EVP_PKEY_RSA,
1068 ASN1_PKEY_ALIAS}
1069};
4e8ba747
DSH		 1070
1071const EVP_PKEY_ASN1_METHOD rsa_pss_asn1_meth = {
1072 EVP_PKEY_RSA_PSS,
1073 EVP_PKEY_RSA_PSS,
1074 ASN1_PKEY_SIGPARAM_NULL,
1075
1076 "RSA-PSS",
1077 "OpenSSL RSA-PSS method",
1078
1079 rsa_pub_decode,
1080 rsa_pub_encode,
1081 rsa_pub_cmp,
1082 rsa_pub_print,
1083
1084 rsa_priv_decode,
1085 rsa_priv_encode,
1086 rsa_priv_print,
1087
1088 int_rsa_size,
1089 rsa_bits,
1090 rsa_security_bits,
1091
1092 0, 0, 0, 0, 0, 0,
1093
1094 rsa_sig_print,
1095 int_rsa_free,
1096 rsa_pkey_ctrl,
1097 0, 0,
1098 rsa_item_verify,
1099 rsa_item_sign,
2aee35d3
PY		 1100 0,
1101 rsa_pkey_check
4e8ba747 1102};
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