1 | /* |
2 | * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved. |
3 | * |
4 | * Licensed under the Apache License 2.0 (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 |
8 | */ |
9 | |
10 | #include <stdio.h> |
11 | #include "internal/cryptlib.h" |
12 | #include <openssl/asn1t.h> |
13 | #include <openssl/x509.h> |
14 | #include <openssl/bn.h> |
15 | #include <openssl/cms.h> |
16 | #include <openssl/core_names.h> |
17 | #include "internal/param_build.h" |
18 | #include "crypto/asn1.h" |
19 | #include "crypto/evp.h" |
20 | #include "crypto/rsa.h" |
21 | #include "rsa_local.h" |
22 | |
23 | #ifndef OPENSSL_NO_CMS |
24 | static int rsa_cms_sign(CMS_SignerInfo *si); |
25 | static int rsa_cms_verify(CMS_SignerInfo *si); |
26 | static int rsa_cms_decrypt(CMS_RecipientInfo *ri); |
27 | static int rsa_cms_encrypt(CMS_RecipientInfo *ri); |
28 | #endif |
29 | |
30 | static RSA_PSS_PARAMS *rsa_pss_decode(const X509_ALGOR *alg); |
31 | |
32 | /* Set any parameters associated with pkey */ |
33 | static int rsa_param_encode(const EVP_PKEY *pkey, |
34 | ASN1_STRING **pstr, int *pstrtype) |
35 | { |
36 | const RSA *rsa = pkey->pkey.rsa; |
37 | |
38 | *pstr = NULL; |
39 | /* If RSA it's just NULL type */ |
40 | if (pkey->ameth->pkey_id != EVP_PKEY_RSA_PSS) { |
41 | *pstrtype = V_ASN1_NULL; |
42 | return 1; |
43 | } |
44 | /* If no PSS parameters we omit parameters entirely */ |
45 | if (rsa->pss == NULL) { |
46 | *pstrtype = V_ASN1_UNDEF; |
47 | return 1; |
48 | } |
49 | /* Encode PSS parameters */ |
50 | if (ASN1_item_pack(rsa->pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), pstr) == NULL) |
51 | return 0; |
52 | |
53 | *pstrtype = V_ASN1_SEQUENCE; |
54 | return 1; |
55 | } |
56 | /* Decode any parameters and set them in RSA structure */ |
57 | static int rsa_param_decode(RSA *rsa, const X509_ALGOR *alg) |
58 | { |
59 | const ASN1_OBJECT *algoid; |
60 | const void *algp; |
61 | int algptype; |
62 | |
63 | X509_ALGOR_get0(&algoid, &algptype, &algp, alg); |
64 | if (OBJ_obj2nid(algoid) != EVP_PKEY_RSA_PSS) |
65 | return 1; |
66 | if (algptype == V_ASN1_UNDEF) |
67 | return 1; |
68 | if (algptype != V_ASN1_SEQUENCE) { |
69 | RSAerr(RSA_F_RSA_PARAM_DECODE, RSA_R_INVALID_PSS_PARAMETERS); |
70 | return 0; |
71 | } |
72 | rsa->pss = rsa_pss_decode(alg); |
73 | if (rsa->pss == NULL) |
74 | return 0; |
75 | return 1; |
76 | } |
77 | |
78 | static int rsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey) |
79 | { |
80 | unsigned char *penc = NULL; |
81 | int penclen; |
82 | ASN1_STRING *str; |
83 | int strtype; |
84 | |
85 | if (!rsa_param_encode(pkey, &str, &strtype)) |
86 | return 0; |
87 | penclen = i2d_RSAPublicKey(pkey->pkey.rsa, &penc); |
88 | if (penclen <= 0) |
89 | return 0; |
90 | if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(pkey->ameth->pkey_id), |
91 | strtype, str, penc, penclen)) |
92 | return 1; |
93 | |
94 | OPENSSL_free(penc); |
95 | return 0; |
96 | } |
97 | |
98 | static int rsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey) |
99 | { |
100 | const unsigned char *p; |
101 | int pklen; |
102 | X509_ALGOR *alg; |
103 | RSA *rsa = NULL; |
104 | |
105 | if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &alg, pubkey)) |
106 | return 0; |
107 | if ((rsa = d2i_RSAPublicKey(NULL, &p, pklen)) == NULL) { |
108 | RSAerr(RSA_F_RSA_PUB_DECODE, ERR_R_RSA_LIB); |
109 | return 0; |
110 | } |
111 | if (!rsa_param_decode(rsa, alg)) { |
112 | RSA_free(rsa); |
113 | return 0; |
114 | } |
115 | if (!EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, rsa)) { |
116 | RSA_free(rsa); |
117 | return 0; |
118 | } |
119 | return 1; |
120 | } |
121 | |
122 | static int rsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) |
123 | { |
124 | if (BN_cmp(b->pkey.rsa->n, a->pkey.rsa->n) != 0 |
125 | || BN_cmp(b->pkey.rsa->e, a->pkey.rsa->e) != 0) |
126 | return 0; |
127 | return 1; |
128 | } |
129 | |
130 | static int old_rsa_priv_decode(EVP_PKEY *pkey, |
131 | const unsigned char **pder, int derlen) |
132 | { |
133 | RSA *rsa; |
134 | |
135 | if ((rsa = d2i_RSAPrivateKey(NULL, pder, derlen)) == NULL) { |
136 | RSAerr(RSA_F_OLD_RSA_PRIV_DECODE, ERR_R_RSA_LIB); |
137 | return 0; |
138 | } |
139 | EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, rsa); |
140 | return 1; |
141 | } |
142 | |
143 | static int old_rsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder) |
144 | { |
145 | return i2d_RSAPrivateKey(pkey->pkey.rsa, pder); |
146 | } |
147 | |
148 | static int rsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey) |
149 | { |
150 | unsigned char *rk = NULL; |
151 | int rklen; |
152 | ASN1_STRING *str; |
153 | int strtype; |
154 | |
155 | if (!rsa_param_encode(pkey, &str, &strtype)) |
156 | return 0; |
157 | rklen = i2d_RSAPrivateKey(pkey->pkey.rsa, &rk); |
158 | |
159 | if (rklen <= 0) { |
160 | RSAerr(RSA_F_RSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE); |
161 | ASN1_STRING_free(str); |
162 | return 0; |
163 | } |
164 | |
165 | if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(pkey->ameth->pkey_id), 0, |
166 | strtype, str, rk, rklen)) { |
167 | RSAerr(RSA_F_RSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE); |
168 | ASN1_STRING_free(str); |
169 | return 0; |
170 | } |
171 | |
172 | return 1; |
173 | } |
174 | |
175 | static int rsa_priv_decode(EVP_PKEY *pkey, const PKCS8_PRIV_KEY_INFO *p8) |
176 | { |
177 | const unsigned char *p; |
178 | RSA *rsa; |
179 | int pklen; |
180 | const X509_ALGOR *alg; |
181 | |
182 | if (!PKCS8_pkey_get0(NULL, &p, &pklen, &alg, p8)) |
183 | return 0; |
184 | rsa = d2i_RSAPrivateKey(NULL, &p, pklen); |
185 | if (rsa == NULL) { |
186 | RSAerr(RSA_F_RSA_PRIV_DECODE, ERR_R_RSA_LIB); |
187 | return 0; |
188 | } |
189 | if (!rsa_param_decode(rsa, alg)) { |
190 | RSA_free(rsa); |
191 | return 0; |
192 | } |
193 | EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, rsa); |
194 | return 1; |
195 | } |
196 | |
197 | static int int_rsa_size(const EVP_PKEY *pkey) |
198 | { |
199 | return RSA_size(pkey->pkey.rsa); |
200 | } |
201 | |
202 | static int rsa_bits(const EVP_PKEY *pkey) |
203 | { |
204 | return BN_num_bits(pkey->pkey.rsa->n); |
205 | } |
206 | |
207 | static int rsa_security_bits(const EVP_PKEY *pkey) |
208 | { |
209 | return RSA_security_bits(pkey->pkey.rsa); |
210 | } |
211 | |
212 | static void int_rsa_free(EVP_PKEY *pkey) |
213 | { |
214 | RSA_free(pkey->pkey.rsa); |
215 | } |
216 | |
217 | static X509_ALGOR *rsa_mgf1_decode(X509_ALGOR *alg) |
218 | { |
219 | if (OBJ_obj2nid(alg->algorithm) != NID_mgf1) |
220 | return NULL; |
221 | return ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(X509_ALGOR), |
222 | alg->parameter); |
223 | } |
224 | |
225 | static int rsa_pss_param_print(BIO *bp, int pss_key, RSA_PSS_PARAMS *pss, |
226 | int indent) |
227 | { |
228 | int rv = 0; |
229 | X509_ALGOR *maskHash = NULL; |
230 | |
231 | if (!BIO_indent(bp, indent, 128)) |
232 | goto err; |
233 | if (pss_key) { |
234 | if (pss == NULL) { |
235 | if (BIO_puts(bp, "No PSS parameter restrictions\n" ) <= 0) |
236 | return 0; |
237 | return 1; |
238 | } else { |
239 | if (BIO_puts(bp, "PSS parameter restrictions:" ) <= 0) |
240 | return 0; |
241 | } |
242 | } else if (pss == NULL) { |
243 | if (BIO_puts(bp,"(INVALID PSS PARAMETERS)\n" ) <= 0) |
244 | return 0; |
245 | return 1; |
246 | } |
247 | if (BIO_puts(bp, "\n" ) <= 0) |
248 | goto err; |
249 | if (pss_key) |
250 | indent += 2; |
251 | if (!BIO_indent(bp, indent, 128)) |
252 | goto err; |
253 | if (BIO_puts(bp, "Hash Algorithm: " ) <= 0) |
254 | goto err; |
255 | |
256 | if (pss->hashAlgorithm) { |
257 | if (i2a_ASN1_OBJECT(bp, pss->hashAlgorithm->algorithm) <= 0) |
258 | goto err; |
259 | } else if (BIO_puts(bp, "sha1 (default)" ) <= 0) { |
260 | goto err; |
261 | } |
262 | |
263 | if (BIO_puts(bp, "\n" ) <= 0) |
264 | goto err; |
265 | |
266 | if (!BIO_indent(bp, indent, 128)) |
267 | goto err; |
268 | |
269 | if (BIO_puts(bp, "Mask Algorithm: " ) <= 0) |
270 | goto err; |
271 | if (pss->maskGenAlgorithm) { |
272 | if (i2a_ASN1_OBJECT(bp, pss->maskGenAlgorithm->algorithm) <= 0) |
273 | goto err; |
274 | if (BIO_puts(bp, " with " ) <= 0) |
275 | goto err; |
276 | maskHash = rsa_mgf1_decode(pss->maskGenAlgorithm); |
277 | if (maskHash != NULL) { |
278 | if (i2a_ASN1_OBJECT(bp, maskHash->algorithm) <= 0) |
279 | goto err; |
280 | } else if (BIO_puts(bp, "INVALID" ) <= 0) { |
281 | goto err; |
282 | } |
283 | } else if (BIO_puts(bp, "mgf1 with sha1 (default)" ) <= 0) { |
284 | goto err; |
285 | } |
286 | BIO_puts(bp, "\n" ); |
287 | |
288 | if (!BIO_indent(bp, indent, 128)) |
289 | goto err; |
290 | if (BIO_printf(bp, "%s Salt Length: 0x" , pss_key ? "Minimum" : "" ) <= 0) |
291 | goto err; |
292 | if (pss->saltLength) { |
293 | if (i2a_ASN1_INTEGER(bp, pss->saltLength) <= 0) |
294 | goto err; |
295 | } else if (BIO_puts(bp, "14 (default)" ) <= 0) { |
296 | goto err; |
297 | } |
298 | BIO_puts(bp, "\n" ); |
299 | |
300 | if (!BIO_indent(bp, indent, 128)) |
301 | goto err; |
302 | if (BIO_puts(bp, "Trailer Field: 0x" ) <= 0) |
303 | goto err; |
304 | if (pss->trailerField) { |
305 | if (i2a_ASN1_INTEGER(bp, pss->trailerField) <= 0) |
306 | goto err; |
307 | } else if (BIO_puts(bp, "BC (default)" ) <= 0) { |
308 | goto err; |
309 | } |
310 | BIO_puts(bp, "\n" ); |
311 | |
312 | rv = 1; |
313 | |
314 | err: |
315 | X509_ALGOR_free(maskHash); |
316 | return rv; |
317 | |
318 | } |
319 | |
320 | static int pkey_rsa_print(BIO *bp, const EVP_PKEY *pkey, int off, int priv) |
321 | { |
322 | const RSA *x = pkey->pkey.rsa; |
323 | char *str; |
324 | const char *s; |
325 | int ret = 0, mod_len = 0, ex_primes; |
326 | |
327 | if (x->n != NULL) |
328 | mod_len = BN_num_bits(x->n); |
329 | ex_primes = sk_RSA_PRIME_INFO_num(x->prime_infos); |
330 | |
331 | if (!BIO_indent(bp, off, 128)) |
332 | goto err; |
333 | |
334 | if (BIO_printf(bp, "%s " , pkey_is_pss(pkey) ? "RSA-PSS" : "RSA" ) <= 0) |
335 | goto err; |
336 | |
337 | if (priv && x->d) { |
338 | if (BIO_printf(bp, "Private-Key: (%d bit, %d primes)\n" , |
339 | mod_len, ex_primes <= 0 ? 2 : ex_primes + 2) <= 0) |
340 | goto err; |
341 | str = "modulus:" ; |
342 | s = "publicExponent:" ; |
343 | } else { |
344 | if (BIO_printf(bp, "Public-Key: (%d bit)\n" , mod_len) <= 0) |
345 | goto err; |
346 | str = "Modulus:" ; |
347 | s = "Exponent:" ; |
348 | } |
349 | if (!ASN1_bn_print(bp, str, x->n, NULL, off)) |
350 | goto err; |
351 | if (!ASN1_bn_print(bp, s, x->e, NULL, off)) |
352 | goto err; |
353 | if (priv) { |
354 | int i; |
355 | |
356 | if (!ASN1_bn_print(bp, "privateExponent:" , x->d, NULL, off)) |
357 | goto err; |
358 | if (!ASN1_bn_print(bp, "prime1:" , x->p, NULL, off)) |
359 | goto err; |
360 | if (!ASN1_bn_print(bp, "prime2:" , x->q, NULL, off)) |
361 | goto err; |
362 | if (!ASN1_bn_print(bp, "exponent1:" , x->dmp1, NULL, off)) |
363 | goto err; |
364 | if (!ASN1_bn_print(bp, "exponent2:" , x->dmq1, NULL, off)) |
365 | goto err; |
366 | if (!ASN1_bn_print(bp, "coefficient:" , x->iqmp, NULL, off)) |
367 | goto err; |
368 | for (i = 0; i < sk_RSA_PRIME_INFO_num(x->prime_infos); i++) { |
369 | /* print multi-prime info */ |
370 | BIGNUM *bn = NULL; |
371 | RSA_PRIME_INFO *pinfo; |
372 | int j; |
373 | |
374 | pinfo = sk_RSA_PRIME_INFO_value(x->prime_infos, i); |
375 | for (j = 0; j < 3; j++) { |
376 | if (!BIO_indent(bp, off, 128)) |
377 | goto err; |
378 | switch (j) { |
379 | case 0: |
380 | if (BIO_printf(bp, "prime%d:" , i + 3) <= 0) |
381 | goto err; |
382 | bn = pinfo->r; |
383 | break; |
384 | case 1: |
385 | if (BIO_printf(bp, "exponent%d:" , i + 3) <= 0) |
386 | goto err; |
387 | bn = pinfo->d; |
388 | break; |
389 | case 2: |
390 | if (BIO_printf(bp, "coefficient%d:" , i + 3) <= 0) |
391 | goto err; |
392 | bn = pinfo->t; |
393 | break; |
394 | default: |
395 | break; |
396 | } |
397 | if (!ASN1_bn_print(bp, "" , bn, NULL, off)) |
398 | goto err; |
399 | } |
400 | } |
401 | } |
402 | if (pkey_is_pss(pkey) && !rsa_pss_param_print(bp, 1, x->pss, off)) |
403 | goto err; |
404 | ret = 1; |
405 | err: |
406 | return ret; |
407 | } |
408 | |
409 | static int rsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent, |
410 | ASN1_PCTX *ctx) |
411 | { |
412 | return pkey_rsa_print(bp, pkey, indent, 0); |
413 | } |
414 | |
415 | static int rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent, |
416 | ASN1_PCTX *ctx) |
417 | { |
418 | return pkey_rsa_print(bp, pkey, indent, 1); |
419 | } |
420 | |
421 | static RSA_PSS_PARAMS *rsa_pss_decode(const X509_ALGOR *alg) |
422 | { |
423 | RSA_PSS_PARAMS *pss; |
424 | |
425 | pss = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(RSA_PSS_PARAMS), |
426 | alg->parameter); |
427 | |
428 | if (pss == NULL) |
429 | return NULL; |
430 | |
431 | if (pss->maskGenAlgorithm != NULL) { |
432 | pss->maskHash = rsa_mgf1_decode(pss->maskGenAlgorithm); |
433 | if (pss->maskHash == NULL) { |
434 | RSA_PSS_PARAMS_free(pss); |
435 | return NULL; |
436 | } |
437 | } |
438 | |
439 | return pss; |
440 | } |
441 | |
442 | static int rsa_sig_print(BIO *bp, const X509_ALGOR *sigalg, |
443 | const ASN1_STRING *sig, int indent, ASN1_PCTX *pctx) |
444 | { |
445 | if (OBJ_obj2nid(sigalg->algorithm) == EVP_PKEY_RSA_PSS) { |
446 | int rv; |
447 | RSA_PSS_PARAMS *pss = rsa_pss_decode(sigalg); |
448 | |
449 | rv = rsa_pss_param_print(bp, 0, pss, indent); |
450 | RSA_PSS_PARAMS_free(pss); |
451 | if (!rv) |
452 | return 0; |
453 | } else if (BIO_puts(bp, "\n" ) <= 0) { |
454 | return 0; |
455 | } |
456 | if (sig) |
457 | return X509_signature_dump(bp, sig, indent); |
458 | return 1; |
459 | } |
460 | |
461 | static int rsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2) |
462 | { |
463 | X509_ALGOR *alg = NULL; |
464 | const EVP_MD *md; |
465 | const EVP_MD *mgf1md; |
466 | int min_saltlen; |
467 | |
468 | switch (op) { |
469 | |
470 | case ASN1_PKEY_CTRL_PKCS7_SIGN: |
471 | if (arg1 == 0) |
472 | PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, NULL, &alg); |
473 | break; |
474 | |
475 | case ASN1_PKEY_CTRL_PKCS7_ENCRYPT: |
476 | if (pkey_is_pss(pkey)) |
477 | return -2; |
478 | if (arg1 == 0) |
479 | PKCS7_RECIP_INFO_get0_alg(arg2, &alg); |
480 | break; |
481 | #ifndef OPENSSL_NO_CMS |
482 | case ASN1_PKEY_CTRL_CMS_SIGN: |
483 | if (arg1 == 0) |
484 | return rsa_cms_sign(arg2); |
485 | else if (arg1 == 1) |
486 | return rsa_cms_verify(arg2); |
487 | break; |
488 | |
489 | case ASN1_PKEY_CTRL_CMS_ENVELOPE: |
490 | if (pkey_is_pss(pkey)) |
491 | return -2; |
492 | if (arg1 == 0) |
493 | return rsa_cms_encrypt(arg2); |
494 | else if (arg1 == 1) |
495 | return rsa_cms_decrypt(arg2); |
496 | break; |
497 | |
498 | case ASN1_PKEY_CTRL_CMS_RI_TYPE: |
499 | if (pkey_is_pss(pkey)) |
500 | return -2; |
501 | *(int *)arg2 = CMS_RECIPINFO_TRANS; |
502 | return 1; |
503 | #endif |
504 | |
505 | case ASN1_PKEY_CTRL_DEFAULT_MD_NID: |
506 | if (pkey->pkey.rsa->pss != NULL) { |
507 | if (!rsa_pss_get_param(pkey->pkey.rsa->pss, &md, &mgf1md, |
508 | &min_saltlen)) { |
509 | RSAerr(0, ERR_R_INTERNAL_ERROR); |
510 | return 0; |
511 | } |
512 | *(int *)arg2 = EVP_MD_type(md); |
513 | /* Return of 2 indicates this MD is mandatory */ |
514 | return 2; |
515 | } |
516 | *(int *)arg2 = NID_sha256; |
517 | return 1; |
518 | |
519 | default: |
520 | return -2; |
521 | |
522 | } |
523 | |
524 | if (alg) |
525 | X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0); |
526 | |
527 | return 1; |
528 | |
529 | } |
530 | |
531 | /* allocate and set algorithm ID from EVP_MD, default SHA1 */ |
532 | static int rsa_md_to_algor(X509_ALGOR **palg, const EVP_MD *md) |
533 | { |
534 | if (md == NULL || EVP_MD_type(md) == NID_sha1) |
535 | return 1; |
536 | *palg = X509_ALGOR_new(); |
537 | if (*palg == NULL) |
538 | return 0; |
539 | X509_ALGOR_set_md(*palg, md); |
540 | return 1; |
541 | } |
542 | |
543 | /* Allocate and set MGF1 algorithm ID from EVP_MD */ |
544 | static int rsa_md_to_mgf1(X509_ALGOR **palg, const EVP_MD *mgf1md) |
545 | { |
546 | X509_ALGOR *algtmp = NULL; |
547 | ASN1_STRING *stmp = NULL; |
548 | |
549 | *palg = NULL; |
550 | if (mgf1md == NULL || EVP_MD_type(mgf1md) == NID_sha1) |
551 | return 1; |
552 | /* need to embed algorithm ID inside another */ |
553 | if (!rsa_md_to_algor(&algtmp, mgf1md)) |
554 | goto err; |
555 | if (ASN1_item_pack(algtmp, ASN1_ITEM_rptr(X509_ALGOR), &stmp) == NULL) |
556 | goto err; |
557 | *palg = X509_ALGOR_new(); |
558 | if (*palg == NULL) |
559 | goto err; |
560 | X509_ALGOR_set0(*palg, OBJ_nid2obj(NID_mgf1), V_ASN1_SEQUENCE, stmp); |
561 | stmp = NULL; |
562 | err: |
563 | ASN1_STRING_free(stmp); |
564 | X509_ALGOR_free(algtmp); |
565 | if (*palg) |
566 | return 1; |
567 | return 0; |
568 | } |
569 | |
570 | /* convert algorithm ID to EVP_MD, default SHA1 */ |
571 | static const EVP_MD *rsa_algor_to_md(X509_ALGOR *alg) |
572 | { |
573 | const EVP_MD *md; |
574 | |
575 | if (!alg) |
576 | return EVP_sha1(); |
577 | md = EVP_get_digestbyobj(alg->algorithm); |
578 | if (md == NULL) |
579 | RSAerr(RSA_F_RSA_ALGOR_TO_MD, RSA_R_UNKNOWN_DIGEST); |
580 | return md; |
581 | } |
582 | |
583 | /* |
584 | * Convert EVP_PKEY_CTX in PSS mode into corresponding algorithm parameter, |
585 | * suitable for setting an AlgorithmIdentifier. |
586 | */ |
587 | |
588 | static RSA_PSS_PARAMS *rsa_ctx_to_pss(EVP_PKEY_CTX *pkctx) |
589 | { |
590 | const EVP_MD *sigmd, *mgf1md; |
591 | EVP_PKEY *pk = EVP_PKEY_CTX_get0_pkey(pkctx); |
592 | int saltlen; |
593 | |
594 | if (EVP_PKEY_CTX_get_signature_md(pkctx, &sigmd) <= 0) |
595 | return NULL; |
596 | if (EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) <= 0) |
597 | return NULL; |
598 | if (!EVP_PKEY_CTX_get_rsa_pss_saltlen(pkctx, &saltlen)) |
599 | return NULL; |
600 | if (saltlen == -1) { |
601 | saltlen = EVP_MD_size(sigmd); |
602 | } else if (saltlen == -2 || saltlen == -3) { |
603 | saltlen = EVP_PKEY_size(pk) - EVP_MD_size(sigmd) - 2; |
604 | if ((EVP_PKEY_bits(pk) & 0x7) == 1) |
605 | saltlen--; |
606 | if (saltlen < 0) |
607 | return NULL; |
608 | } |
609 | |
610 | return rsa_pss_params_create(sigmd, mgf1md, saltlen); |
611 | } |
612 | |
613 | RSA_PSS_PARAMS *rsa_pss_params_create(const EVP_MD *sigmd, |
614 | const EVP_MD *mgf1md, int saltlen) |
615 | { |
616 | RSA_PSS_PARAMS *pss = RSA_PSS_PARAMS_new(); |
617 | |
618 | if (pss == NULL) |
619 | goto err; |
620 | if (saltlen != 20) { |
621 | pss->saltLength = ASN1_INTEGER_new(); |
622 | if (pss->saltLength == NULL) |
623 | goto err; |
624 | if (!ASN1_INTEGER_set(pss->saltLength, saltlen)) |
625 | goto err; |
626 | } |
627 | if (!rsa_md_to_algor(&pss->hashAlgorithm, sigmd)) |
628 | goto err; |
629 | if (mgf1md == NULL) |
630 | mgf1md = sigmd; |
631 | if (!rsa_md_to_mgf1(&pss->maskGenAlgorithm, mgf1md)) |
632 | goto err; |
633 | if (!rsa_md_to_algor(&pss->maskHash, mgf1md)) |
634 | goto err; |
635 | return pss; |
636 | err: |
637 | RSA_PSS_PARAMS_free(pss); |
638 | return NULL; |
639 | } |
640 | |
641 | static ASN1_STRING *rsa_ctx_to_pss_string(EVP_PKEY_CTX *pkctx) |
642 | { |
643 | RSA_PSS_PARAMS *pss = rsa_ctx_to_pss(pkctx); |
644 | ASN1_STRING *os; |
645 | |
646 | if (pss == NULL) |
647 | return NULL; |
648 | |
649 | os = ASN1_item_pack(pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), NULL); |
650 | RSA_PSS_PARAMS_free(pss); |
651 | return os; |
652 | } |
653 | |
654 | /* |
655 | * From PSS AlgorithmIdentifier set public key parameters. If pkey isn't NULL |
656 | * then the EVP_MD_CTX is setup and initialised. If it is NULL parameters are |
657 | * passed to pkctx instead. |
658 | */ |
659 | |
660 | static int rsa_pss_to_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pkctx, |
661 | X509_ALGOR *sigalg, EVP_PKEY *pkey) |
662 | { |
663 | int rv = -1; |
664 | int saltlen; |
665 | const EVP_MD *mgf1md = NULL, *md = NULL; |
666 | RSA_PSS_PARAMS *pss; |
667 | |
668 | /* Sanity check: make sure it is PSS */ |
669 | if (OBJ_obj2nid(sigalg->algorithm) != EVP_PKEY_RSA_PSS) { |
670 | RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_UNSUPPORTED_SIGNATURE_TYPE); |
671 | return -1; |
672 | } |
673 | /* Decode PSS parameters */ |
674 | pss = rsa_pss_decode(sigalg); |
675 | |
676 | if (!rsa_pss_get_param(pss, &md, &mgf1md, &saltlen)) { |
677 | RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_INVALID_PSS_PARAMETERS); |
678 | goto err; |
679 | } |
680 | |
681 | /* We have all parameters now set up context */ |
682 | if (pkey) { |
683 | if (!EVP_DigestVerifyInit(ctx, &pkctx, md, NULL, pkey)) |
684 | goto err; |
685 | } else { |
686 | const EVP_MD *checkmd; |
687 | if (EVP_PKEY_CTX_get_signature_md(pkctx, &checkmd) <= 0) |
688 | goto err; |
689 | if (EVP_MD_type(md) != EVP_MD_type(checkmd)) { |
690 | RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_DIGEST_DOES_NOT_MATCH); |
691 | goto err; |
692 | } |
693 | } |
694 | |
695 | if (EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_PSS_PADDING) <= 0) |
696 | goto err; |
697 | |
698 | if (EVP_PKEY_CTX_set_rsa_pss_saltlen(pkctx, saltlen) <= 0) |
699 | goto err; |
700 | |
701 | if (EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md) <= 0) |
702 | goto err; |
703 | /* Carry on */ |
704 | rv = 1; |
705 | |
706 | err: |
707 | RSA_PSS_PARAMS_free(pss); |
708 | return rv; |
709 | } |
710 | |
711 | int rsa_pss_get_param(const RSA_PSS_PARAMS *pss, const EVP_MD **pmd, |
712 | const EVP_MD **pmgf1md, int *psaltlen) |
713 | { |
714 | if (pss == NULL) |
715 | return 0; |
716 | *pmd = rsa_algor_to_md(pss->hashAlgorithm); |
717 | if (*pmd == NULL) |
718 | return 0; |
719 | *pmgf1md = rsa_algor_to_md(pss->maskHash); |
720 | if (*pmgf1md == NULL) |
721 | return 0; |
722 | if (pss->saltLength) { |
723 | *psaltlen = ASN1_INTEGER_get(pss->saltLength); |
724 | if (*psaltlen < 0) { |
725 | RSAerr(RSA_F_RSA_PSS_GET_PARAM, RSA_R_INVALID_SALT_LENGTH); |
726 | return 0; |
727 | } |
728 | } else { |
729 | *psaltlen = 20; |
730 | } |
731 | |
732 | /* |
733 | * low-level routines support only trailer field 0xbc (value 1) and |
734 | * PKCS#1 says we should reject any other value anyway. |
735 | */ |
736 | if (pss->trailerField && ASN1_INTEGER_get(pss->trailerField) != 1) { |
737 | RSAerr(RSA_F_RSA_PSS_GET_PARAM, RSA_R_INVALID_TRAILER); |
738 | return 0; |
739 | } |
740 | |
741 | return 1; |
742 | } |
743 | |
744 | #ifndef OPENSSL_NO_CMS |
745 | static int rsa_cms_verify(CMS_SignerInfo *si) |
746 | { |
747 | int nid, nid2; |
748 | X509_ALGOR *alg; |
749 | EVP_PKEY_CTX *pkctx = CMS_SignerInfo_get0_pkey_ctx(si); |
750 | |
751 | CMS_SignerInfo_get0_algs(si, NULL, NULL, NULL, &alg); |
752 | nid = OBJ_obj2nid(alg->algorithm); |
753 | if (nid == EVP_PKEY_RSA_PSS) |
754 | return rsa_pss_to_ctx(NULL, pkctx, alg, NULL); |
755 | /* Only PSS allowed for PSS keys */ |
756 | if (pkey_ctx_is_pss(pkctx)) { |
757 | RSAerr(RSA_F_RSA_CMS_VERIFY, RSA_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE); |
758 | return 0; |
759 | } |
760 | if (nid == NID_rsaEncryption) |
761 | return 1; |
762 | /* Workaround for some implementation that use a signature OID */ |
763 | if (OBJ_find_sigid_algs(nid, NULL, &nid2)) { |
764 | if (nid2 == NID_rsaEncryption) |
765 | return 1; |
766 | } |
767 | return 0; |
768 | } |
769 | #endif |
770 | |
771 | /* |
772 | * Customised RSA item verification routine. This is called when a signature |
773 | * is encountered requiring special handling. We currently only handle PSS. |
774 | */ |
775 | |
776 | static int rsa_item_verify(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn, |
777 | X509_ALGOR *sigalg, ASN1_BIT_STRING *sig, |
778 | EVP_PKEY *pkey) |
779 | { |
780 | /* Sanity check: make sure it is PSS */ |
781 | if (OBJ_obj2nid(sigalg->algorithm) != EVP_PKEY_RSA_PSS) { |
782 | RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_SIGNATURE_TYPE); |
783 | return -1; |
784 | } |
785 | if (rsa_pss_to_ctx(ctx, NULL, sigalg, pkey) > 0) { |
786 | /* Carry on */ |
787 | return 2; |
788 | } |
789 | return -1; |
790 | } |
791 | |
792 | #ifndef OPENSSL_NO_CMS |
793 | static int rsa_cms_sign(CMS_SignerInfo *si) |
794 | { |
795 | int pad_mode = RSA_PKCS1_PADDING; |
796 | X509_ALGOR *alg; |
797 | EVP_PKEY_CTX *pkctx = CMS_SignerInfo_get0_pkey_ctx(si); |
798 | ASN1_STRING *os = NULL; |
799 | |
800 | CMS_SignerInfo_get0_algs(si, NULL, NULL, NULL, &alg); |
801 | if (pkctx) { |
802 | if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0) |
803 | return 0; |
804 | } |
805 | if (pad_mode == RSA_PKCS1_PADDING) { |
806 | X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0); |
807 | return 1; |
808 | } |
809 | /* We don't support it */ |
810 | if (pad_mode != RSA_PKCS1_PSS_PADDING) |
811 | return 0; |
812 | os = rsa_ctx_to_pss_string(pkctx); |
813 | if (!os) |
814 | return 0; |
815 | X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_PKEY_RSA_PSS), V_ASN1_SEQUENCE, os); |
816 | return 1; |
817 | } |
818 | #endif |
819 | |
820 | static int rsa_item_sign(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn, |
821 | X509_ALGOR *alg1, X509_ALGOR *alg2, |
822 | ASN1_BIT_STRING *sig) |
823 | { |
824 | int pad_mode; |
825 | EVP_PKEY_CTX *pkctx = EVP_MD_CTX_pkey_ctx(ctx); |
826 | |
827 | if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0) |
828 | return 0; |
829 | if (pad_mode == RSA_PKCS1_PADDING) |
830 | return 2; |
831 | if (pad_mode == RSA_PKCS1_PSS_PADDING) { |
832 | ASN1_STRING *os1 = NULL; |
833 | os1 = rsa_ctx_to_pss_string(pkctx); |
834 | if (!os1) |
835 | return 0; |
836 | /* Duplicate parameters if we have to */ |
837 | if (alg2) { |
838 | ASN1_STRING *os2 = ASN1_STRING_dup(os1); |
839 | if (!os2) { |
840 | ASN1_STRING_free(os1); |
841 | return 0; |
842 | } |
843 | X509_ALGOR_set0(alg2, OBJ_nid2obj(EVP_PKEY_RSA_PSS), |
844 | V_ASN1_SEQUENCE, os2); |
845 | } |
846 | X509_ALGOR_set0(alg1, OBJ_nid2obj(EVP_PKEY_RSA_PSS), |
847 | V_ASN1_SEQUENCE, os1); |
848 | return 3; |
849 | } |
850 | return 2; |
851 | } |
852 | |
853 | static int rsa_sig_info_set(X509_SIG_INFO *siginf, const X509_ALGOR *sigalg, |
854 | const ASN1_STRING *sig) |
855 | { |
856 | int rv = 0; |
857 | int mdnid, saltlen; |
858 | uint32_t flags; |
859 | const EVP_MD *mgf1md = NULL, *md = NULL; |
860 | RSA_PSS_PARAMS *pss; |
861 | |
862 | /* Sanity check: make sure it is PSS */ |
863 | if (OBJ_obj2nid(sigalg->algorithm) != EVP_PKEY_RSA_PSS) |
864 | return 0; |
865 | /* Decode PSS parameters */ |
866 | pss = rsa_pss_decode(sigalg); |
867 | if (!rsa_pss_get_param(pss, &md, &mgf1md, &saltlen)) |
868 | goto err; |
869 | mdnid = EVP_MD_type(md); |
870 | /* |
871 | * For TLS need SHA256, SHA384 or SHA512, digest and MGF1 digest must |
872 | * match and salt length must equal digest size |
873 | */ |
874 | if ((mdnid == NID_sha256 || mdnid == NID_sha384 || mdnid == NID_sha512) |
875 | && mdnid == EVP_MD_type(mgf1md) && saltlen == EVP_MD_size(md)) |
876 | flags = X509_SIG_INFO_TLS; |
877 | else |
878 | flags = 0; |
879 | /* Note: security bits half number of digest bits */ |
880 | X509_SIG_INFO_set(siginf, mdnid, EVP_PKEY_RSA_PSS, EVP_MD_size(md) * 4, |
881 | flags); |
882 | rv = 1; |
883 | err: |
884 | RSA_PSS_PARAMS_free(pss); |
885 | return rv; |
886 | } |
887 | |
888 | #ifndef OPENSSL_NO_CMS |
889 | static RSA_OAEP_PARAMS *rsa_oaep_decode(const X509_ALGOR *alg) |
890 | { |
891 | RSA_OAEP_PARAMS *oaep; |
892 | |
893 | oaep = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(RSA_OAEP_PARAMS), |
894 | alg->parameter); |
895 | |
896 | if (oaep == NULL) |
897 | return NULL; |
898 | |
899 | if (oaep->maskGenFunc != NULL) { |
900 | oaep->maskHash = rsa_mgf1_decode(oaep->maskGenFunc); |
901 | if (oaep->maskHash == NULL) { |
902 | RSA_OAEP_PARAMS_free(oaep); |
903 | return NULL; |
904 | } |
905 | } |
906 | return oaep; |
907 | } |
908 | |
909 | static int rsa_cms_decrypt(CMS_RecipientInfo *ri) |
910 | { |
911 | EVP_PKEY_CTX *pkctx; |
912 | X509_ALGOR *cmsalg; |
913 | int nid; |
914 | int rv = -1; |
915 | unsigned char *label = NULL; |
916 | int labellen = 0; |
917 | const EVP_MD *mgf1md = NULL, *md = NULL; |
918 | RSA_OAEP_PARAMS *oaep; |
919 | |
920 | pkctx = CMS_RecipientInfo_get0_pkey_ctx(ri); |
921 | if (pkctx == NULL) |
922 | return 0; |
923 | if (!CMS_RecipientInfo_ktri_get0_algs(ri, NULL, NULL, &cmsalg)) |
924 | return -1; |
925 | nid = OBJ_obj2nid(cmsalg->algorithm); |
926 | if (nid == NID_rsaEncryption) |
927 | return 1; |
928 | if (nid != NID_rsaesOaep) { |
929 | RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_UNSUPPORTED_ENCRYPTION_TYPE); |
930 | return -1; |
931 | } |
932 | /* Decode OAEP parameters */ |
933 | oaep = rsa_oaep_decode(cmsalg); |
934 | |
935 | if (oaep == NULL) { |
936 | RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_INVALID_OAEP_PARAMETERS); |
937 | goto err; |
938 | } |
939 | |
940 | mgf1md = rsa_algor_to_md(oaep->maskHash); |
941 | if (mgf1md == NULL) |
942 | goto err; |
943 | md = rsa_algor_to_md(oaep->hashFunc); |
944 | if (md == NULL) |
945 | goto err; |
946 | |
947 | if (oaep->pSourceFunc != NULL) { |
948 | X509_ALGOR *plab = oaep->pSourceFunc; |
949 | |
950 | if (OBJ_obj2nid(plab->algorithm) != NID_pSpecified) { |
951 | RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_UNSUPPORTED_LABEL_SOURCE); |
952 | goto err; |
953 | } |
954 | if (plab->parameter->type != V_ASN1_OCTET_STRING) { |
955 | RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_INVALID_LABEL); |
956 | goto err; |
957 | } |
958 | |
959 | label = plab->parameter->value.octet_string->data; |
960 | /* Stop label being freed when OAEP parameters are freed */ |
961 | plab->parameter->value.octet_string->data = NULL; |
962 | labellen = plab->parameter->value.octet_string->length; |
963 | } |
964 | |
965 | if (EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_OAEP_PADDING) <= 0) |
966 | goto err; |
967 | if (EVP_PKEY_CTX_set_rsa_oaep_md(pkctx, md) <= 0) |
968 | goto err; |
969 | if (EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md) <= 0) |
970 | goto err; |
971 | if (EVP_PKEY_CTX_set0_rsa_oaep_label(pkctx, label, labellen) <= 0) |
972 | goto err; |
973 | /* Carry on */ |
974 | rv = 1; |
975 | |
976 | err: |
977 | RSA_OAEP_PARAMS_free(oaep); |
978 | return rv; |
979 | } |
980 | |
981 | static int rsa_cms_encrypt(CMS_RecipientInfo *ri) |
982 | { |
983 | const EVP_MD *md, *mgf1md; |
984 | RSA_OAEP_PARAMS *oaep = NULL; |
985 | ASN1_STRING *os = NULL; |
986 | X509_ALGOR *alg; |
987 | EVP_PKEY_CTX *pkctx = CMS_RecipientInfo_get0_pkey_ctx(ri); |
988 | int pad_mode = RSA_PKCS1_PADDING, rv = 0, labellen; |
989 | unsigned char *label; |
990 | |
991 | if (CMS_RecipientInfo_ktri_get0_algs(ri, NULL, NULL, &alg) <= 0) |
992 | return 0; |
993 | if (pkctx) { |
994 | if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0) |
995 | return 0; |
996 | } |
997 | if (pad_mode == RSA_PKCS1_PADDING) { |
998 | X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0); |
999 | return 1; |
1000 | } |
1001 | /* Not supported */ |
1002 | if (pad_mode != RSA_PKCS1_OAEP_PADDING) |
1003 | return 0; |
1004 | if (EVP_PKEY_CTX_get_rsa_oaep_md(pkctx, &md) <= 0) |
1005 | goto err; |
1006 | if (EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) <= 0) |
1007 | goto err; |
1008 | labellen = EVP_PKEY_CTX_get0_rsa_oaep_label(pkctx, &label); |
1009 | if (labellen < 0) |
1010 | goto err; |
1011 | oaep = RSA_OAEP_PARAMS_new(); |
1012 | if (oaep == NULL) |
1013 | goto err; |
1014 | if (!rsa_md_to_algor(&oaep->hashFunc, md)) |
1015 | goto err; |
1016 | if (!rsa_md_to_mgf1(&oaep->maskGenFunc, mgf1md)) |
1017 | goto err; |
1018 | if (labellen > 0) { |
1019 | ASN1_OCTET_STRING *los; |
1020 | oaep->pSourceFunc = X509_ALGOR_new(); |
1021 | if (oaep->pSourceFunc == NULL) |
1022 | goto err; |
1023 | los = ASN1_OCTET_STRING_new(); |
1024 | if (los == NULL) |
1025 | goto err; |
1026 | if (!ASN1_OCTET_STRING_set(los, label, labellen)) { |
1027 | ASN1_OCTET_STRING_free(los); |
1028 | goto err; |
1029 | } |
1030 | X509_ALGOR_set0(oaep->pSourceFunc, OBJ_nid2obj(NID_pSpecified), |
1031 | V_ASN1_OCTET_STRING, los); |
1032 | } |
1033 | /* create string with pss parameter encoding. */ |
1034 | if (!ASN1_item_pack(oaep, ASN1_ITEM_rptr(RSA_OAEP_PARAMS), &os)) |
1035 | goto err; |
1036 | X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaesOaep), V_ASN1_SEQUENCE, os); |
1037 | os = NULL; |
1038 | rv = 1; |
1039 | err: |
1040 | RSA_OAEP_PARAMS_free(oaep); |
1041 | ASN1_STRING_free(os); |
1042 | return rv; |
1043 | } |
1044 | #endif |
1045 | |
1046 | static int rsa_pkey_check(const EVP_PKEY *pkey) |
1047 | { |
1048 | return RSA_check_key_ex(pkey->pkey.rsa, NULL); |
1049 | } |
1050 | |
1051 | static size_t rsa_pkey_dirty_cnt(const EVP_PKEY *pkey) |
1052 | { |
1053 | return pkey->pkey.rsa->dirty_cnt; |
1054 | } |
1055 | |
1056 | DEFINE_SPECIAL_STACK_OF_CONST(BIGNUM_const, BIGNUM) |
1057 | |
1058 | static void *rsa_pkey_export_to(const EVP_PKEY *pk, EVP_KEYMGMT *keymgmt, |
1059 | int want_domainparams) |
1060 | { |
1061 | RSA *rsa = pk->pkey.rsa; |
1062 | OSSL_PARAM_BLD tmpl; |
1063 | const BIGNUM *n = RSA_get0_n(rsa), *e = RSA_get0_e(rsa); |
1064 | const BIGNUM *d = RSA_get0_d(rsa); |
1065 | STACK_OF(BIGNUM_const) *primes = NULL, *exps = NULL, *coeffs = NULL; |
1066 | int numprimes = 0, numexps = 0, numcoeffs = 0; |
1067 | OSSL_PARAM *params = NULL; |
1068 | void *provkey = NULL; |
1069 | |
1070 | /* |
1071 | * There are no domain parameters for RSA keys, or rather, they are |
1072 | * included in the key data itself. |
1073 | */ |
1074 | if (want_domainparams) |
1075 | goto err; |
1076 | |
1077 | /* Get all the primes and CRT params */ |
1078 | if ((primes = sk_BIGNUM_const_new_null()) == NULL |
1079 | || (exps = sk_BIGNUM_const_new_null()) == NULL |
1080 | || (coeffs = sk_BIGNUM_const_new_null()) == NULL) |
1081 | goto err; |
1082 | |
1083 | if (!rsa_get0_all_params(rsa, primes, exps, coeffs)) |
1084 | goto err; |
1085 | |
1086 | /* Public parameters must always be present */ |
1087 | if (n == NULL || e == NULL) |
1088 | goto err; |
1089 | |
1090 | if (d != NULL) { |
1091 | /* It's a private key, so we should have everything else too */ |
1092 | numprimes = sk_BIGNUM_const_num(primes); |
1093 | numexps = sk_BIGNUM_const_num(exps); |
1094 | numcoeffs = sk_BIGNUM_const_num(coeffs); |
1095 | |
1096 | if (numprimes < 2 || numexps < 2 || numcoeffs < 1) |
1097 | goto err; |
1098 | |
1099 | /* assert that an OSSL_PARAM_BLD has enough space. */ |
1100 | if (!ossl_assert(/* n, e */ 2 + /* d */ 1 + /* numprimes */ 1 |
1101 | + numprimes + numexps + numcoeffs |
1102 | <= OSSL_PARAM_BLD_MAX)) |
1103 | goto err; |
1104 | } |
1105 | |
1106 | ossl_param_bld_init(&tmpl); |
1107 | if (!ossl_param_bld_push_BN(&tmpl, OSSL_PKEY_PARAM_RSA_N, n) |
1108 | || !ossl_param_bld_push_BN(&tmpl, OSSL_PKEY_PARAM_RSA_E, e)) |
1109 | goto err; |
1110 | |
1111 | if (d != NULL) { |
1112 | int i; |
1113 | |
1114 | if (!ossl_param_bld_push_BN(&tmpl, OSSL_PKEY_PARAM_RSA_D, d)) |
1115 | goto err; |
1116 | |
1117 | for (i = 0; i < numprimes; i++) { |
1118 | const BIGNUM *num = sk_BIGNUM_const_value(primes, i); |
1119 | |
1120 | if (!ossl_param_bld_push_BN(&tmpl, OSSL_PKEY_PARAM_RSA_FACTOR, |
1121 | num)) |
1122 | goto err; |
1123 | } |
1124 | |
1125 | for (i = 0; i < numexps; i++) { |
1126 | const BIGNUM *num = sk_BIGNUM_const_value(exps, i); |
1127 | |
1128 | if (!ossl_param_bld_push_BN(&tmpl, OSSL_PKEY_PARAM_RSA_EXPONENT, |
1129 | num)) |
1130 | goto err; |
1131 | } |
1132 | |
1133 | for (i = 0; i < numcoeffs; i++) { |
1134 | const BIGNUM *num = sk_BIGNUM_const_value(coeffs, i); |
1135 | |
1136 | if (!ossl_param_bld_push_BN(&tmpl, OSSL_PKEY_PARAM_RSA_COEFFICIENT, |
1137 | num)) |
1138 | goto err; |
1139 | } |
1140 | } |
1141 | |
1142 | if ((params = ossl_param_bld_to_param(&tmpl)) == NULL) |
1143 | goto err; |
1144 | |
1145 | /* We export, the provider imports */ |
1146 | provkey = evp_keymgmt_importkey(keymgmt, params); |
1147 | |
1148 | err: |
1149 | sk_BIGNUM_const_free(primes); |
1150 | sk_BIGNUM_const_free(exps); |
1151 | sk_BIGNUM_const_free(coeffs); |
1152 | ossl_param_bld_free(params); |
1153 | return provkey; |
1154 | } |
1155 | |
1156 | const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[2] = { |
1157 | { |
1158 | EVP_PKEY_RSA, |
1159 | EVP_PKEY_RSA, |
1160 | ASN1_PKEY_SIGPARAM_NULL, |
1161 | |
1162 | "RSA" , |
1163 | "OpenSSL RSA method" , |
1164 | |
1165 | rsa_pub_decode, |
1166 | rsa_pub_encode, |
1167 | rsa_pub_cmp, |
1168 | rsa_pub_print, |
1169 | |
1170 | rsa_priv_decode, |
1171 | rsa_priv_encode, |
1172 | rsa_priv_print, |
1173 | |
1174 | int_rsa_size, |
1175 | rsa_bits, |
1176 | rsa_security_bits, |
1177 | |
1178 | 0, 0, 0, 0, 0, 0, |
1179 | |
1180 | rsa_sig_print, |
1181 | int_rsa_free, |
1182 | rsa_pkey_ctrl, |
1183 | old_rsa_priv_decode, |
1184 | old_rsa_priv_encode, |
1185 | rsa_item_verify, |
1186 | rsa_item_sign, |
1187 | rsa_sig_info_set, |
1188 | rsa_pkey_check, |
1189 | |
1190 | 0, 0, |
1191 | 0, 0, 0, 0, |
1192 | |
1193 | rsa_pkey_dirty_cnt, |
1194 | rsa_pkey_export_to |
1195 | }, |
1196 | |
1197 | { |
1198 | EVP_PKEY_RSA2, |
1199 | EVP_PKEY_RSA, |
1200 | ASN1_PKEY_ALIAS} |
1201 | }; |
1202 | |
1203 | const EVP_PKEY_ASN1_METHOD rsa_pss_asn1_meth = { |
1204 | EVP_PKEY_RSA_PSS, |
1205 | EVP_PKEY_RSA_PSS, |
1206 | ASN1_PKEY_SIGPARAM_NULL, |
1207 | |
1208 | "RSA-PSS" , |
1209 | "OpenSSL RSA-PSS method" , |
1210 | |
1211 | rsa_pub_decode, |
1212 | rsa_pub_encode, |
1213 | rsa_pub_cmp, |
1214 | rsa_pub_print, |
1215 | |
1216 | rsa_priv_decode, |
1217 | rsa_priv_encode, |
1218 | rsa_priv_print, |
1219 | |
1220 | int_rsa_size, |
1221 | rsa_bits, |
1222 | rsa_security_bits, |
1223 | |
1224 | 0, 0, 0, 0, 0, 0, |
1225 | |
1226 | rsa_sig_print, |
1227 | int_rsa_free, |
1228 | rsa_pkey_ctrl, |
1229 | 0, 0, |
1230 | rsa_item_verify, |
1231 | rsa_item_sign, |
1232 | 0, |
1233 | rsa_pkey_check, |
1234 | |
1235 | 0, 0, |
1236 | 0, 0, 0, 0, |
1237 | |
1238 | rsa_pkey_dirty_cnt, |
1239 | rsa_pkey_export_to |
1240 | }; |
1241 | |