diff options
Diffstat (limited to 'src/lib/libcrypto/rsa/rsa_ameth.c')
-rw-r--r-- | src/lib/libcrypto/rsa/rsa_ameth.c | 675 |
1 files changed, 0 insertions, 675 deletions
diff --git a/src/lib/libcrypto/rsa/rsa_ameth.c b/src/lib/libcrypto/rsa/rsa_ameth.c deleted file mode 100644 index b66c749293..0000000000 --- a/src/lib/libcrypto/rsa/rsa_ameth.c +++ /dev/null | |||
@@ -1,675 +0,0 @@ | |||
1 | /* $OpenBSD: rsa_ameth.c,v 1.15 2015/12/03 23:03:10 beck Exp $ */ | ||
2 | /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL | ||
3 | * project 2006. | ||
4 | */ | ||
5 | /* ==================================================================== | ||
6 | * Copyright (c) 2006 The OpenSSL Project. All rights reserved. | ||
7 | * | ||
8 | * Redistribution and use in source and binary forms, with or without | ||
9 | * modification, are permitted provided that the following conditions | ||
10 | * are met: | ||
11 | * | ||
12 | * 1. Redistributions of source code must retain the above copyright | ||
13 | * notice, this list of conditions and the following disclaimer. | ||
14 | * | ||
15 | * 2. Redistributions in binary form must reproduce the above copyright | ||
16 | * notice, this list of conditions and the following disclaimer in | ||
17 | * the documentation and/or other materials provided with the | ||
18 | * distribution. | ||
19 | * | ||
20 | * 3. All advertising materials mentioning features or use of this | ||
21 | * software must display the following acknowledgment: | ||
22 | * "This product includes software developed by the OpenSSL Project | ||
23 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | ||
24 | * | ||
25 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | ||
26 | * endorse or promote products derived from this software without | ||
27 | * prior written permission. For written permission, please contact | ||
28 | * licensing@OpenSSL.org. | ||
29 | * | ||
30 | * 5. Products derived from this software may not be called "OpenSSL" | ||
31 | * nor may "OpenSSL" appear in their names without prior written | ||
32 | * permission of the OpenSSL Project. | ||
33 | * | ||
34 | * 6. Redistributions of any form whatsoever must retain the following | ||
35 | * acknowledgment: | ||
36 | * "This product includes software developed by the OpenSSL Project | ||
37 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | ||
38 | * | ||
39 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | ||
40 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
41 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | ||
42 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | ||
43 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
44 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | ||
45 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | ||
46 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | ||
48 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
49 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | ||
50 | * OF THE POSSIBILITY OF SUCH DAMAGE. | ||
51 | * ==================================================================== | ||
52 | * | ||
53 | * This product includes cryptographic software written by Eric Young | ||
54 | * (eay@cryptsoft.com). This product includes software written by Tim | ||
55 | * Hudson (tjh@cryptsoft.com). | ||
56 | * | ||
57 | */ | ||
58 | |||
59 | #include <stdio.h> | ||
60 | |||
61 | #include <openssl/opensslconf.h> | ||
62 | |||
63 | #include <openssl/asn1t.h> | ||
64 | #include <openssl/bn.h> | ||
65 | #include <openssl/err.h> | ||
66 | #include <openssl/rsa.h> | ||
67 | #include <openssl/x509.h> | ||
68 | |||
69 | #ifndef OPENSSL_NO_CMS | ||
70 | #include <openssl/cms.h> | ||
71 | #endif | ||
72 | |||
73 | #include "asn1_locl.h" | ||
74 | |||
75 | static int | ||
76 | rsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey) | ||
77 | { | ||
78 | unsigned char *penc = NULL; | ||
79 | int penclen; | ||
80 | |||
81 | penclen = i2d_RSAPublicKey(pkey->pkey.rsa, &penc); | ||
82 | if (penclen <= 0) | ||
83 | return 0; | ||
84 | if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_RSA), | ||
85 | V_ASN1_NULL, NULL, penc, penclen)) | ||
86 | return 1; | ||
87 | |||
88 | free(penc); | ||
89 | return 0; | ||
90 | } | ||
91 | |||
92 | static int | ||
93 | rsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey) | ||
94 | { | ||
95 | const unsigned char *p; | ||
96 | int pklen; | ||
97 | RSA *rsa = NULL; | ||
98 | |||
99 | if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, NULL, pubkey)) | ||
100 | return 0; | ||
101 | if (!(rsa = d2i_RSAPublicKey(NULL, &p, pklen))) { | ||
102 | RSAerr(RSA_F_RSA_PUB_DECODE, ERR_R_RSA_LIB); | ||
103 | return 0; | ||
104 | } | ||
105 | EVP_PKEY_assign_RSA (pkey, rsa); | ||
106 | return 1; | ||
107 | } | ||
108 | |||
109 | static int | ||
110 | rsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) | ||
111 | { | ||
112 | if (BN_cmp(b->pkey.rsa->n, a->pkey.rsa->n) != 0 || | ||
113 | BN_cmp(b->pkey.rsa->e, a->pkey.rsa->e) != 0) | ||
114 | return 0; | ||
115 | return 1; | ||
116 | } | ||
117 | |||
118 | static int | ||
119 | old_rsa_priv_decode(EVP_PKEY *pkey, const unsigned char **pder, int derlen) | ||
120 | { | ||
121 | RSA *rsa; | ||
122 | |||
123 | if (!(rsa = d2i_RSAPrivateKey (NULL, pder, derlen))) { | ||
124 | RSAerr(RSA_F_OLD_RSA_PRIV_DECODE, ERR_R_RSA_LIB); | ||
125 | return 0; | ||
126 | } | ||
127 | EVP_PKEY_assign_RSA(pkey, rsa); | ||
128 | return 1; | ||
129 | } | ||
130 | |||
131 | static int | ||
132 | old_rsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder) | ||
133 | { | ||
134 | return i2d_RSAPrivateKey(pkey->pkey.rsa, pder); | ||
135 | } | ||
136 | |||
137 | static int | ||
138 | rsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey) | ||
139 | { | ||
140 | unsigned char *rk = NULL; | ||
141 | int rklen; | ||
142 | |||
143 | rklen = i2d_RSAPrivateKey(pkey->pkey.rsa, &rk); | ||
144 | |||
145 | if (rklen <= 0) { | ||
146 | RSAerr(RSA_F_RSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE); | ||
147 | return 0; | ||
148 | } | ||
149 | |||
150 | if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_rsaEncryption), 0, | ||
151 | V_ASN1_NULL, NULL, rk, rklen)) { | ||
152 | RSAerr(RSA_F_RSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE); | ||
153 | return 0; | ||
154 | } | ||
155 | |||
156 | return 1; | ||
157 | } | ||
158 | |||
159 | static int | ||
160 | rsa_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8) | ||
161 | { | ||
162 | const unsigned char *p; | ||
163 | int pklen; | ||
164 | |||
165 | if (!PKCS8_pkey_get0(NULL, &p, &pklen, NULL, p8)) | ||
166 | return 0; | ||
167 | return old_rsa_priv_decode(pkey, &p, pklen); | ||
168 | } | ||
169 | |||
170 | static int | ||
171 | int_rsa_size(const EVP_PKEY *pkey) | ||
172 | { | ||
173 | return RSA_size(pkey->pkey.rsa); | ||
174 | } | ||
175 | |||
176 | static int | ||
177 | rsa_bits(const EVP_PKEY *pkey) | ||
178 | { | ||
179 | return BN_num_bits(pkey->pkey.rsa->n); | ||
180 | } | ||
181 | |||
182 | static void | ||
183 | int_rsa_free(EVP_PKEY *pkey) | ||
184 | { | ||
185 | RSA_free(pkey->pkey.rsa); | ||
186 | } | ||
187 | |||
188 | static void | ||
189 | update_buflen(const BIGNUM *b, size_t *pbuflen) | ||
190 | { | ||
191 | size_t i; | ||
192 | |||
193 | if (!b) | ||
194 | return; | ||
195 | if (*pbuflen < (i = (size_t)BN_num_bytes(b))) | ||
196 | *pbuflen = i; | ||
197 | } | ||
198 | |||
199 | static int | ||
200 | do_rsa_print(BIO *bp, const RSA *x, int off, int priv) | ||
201 | { | ||
202 | char *str; | ||
203 | const char *s; | ||
204 | unsigned char *m = NULL; | ||
205 | int ret = 0, mod_len = 0; | ||
206 | size_t buf_len = 0; | ||
207 | |||
208 | update_buflen(x->n, &buf_len); | ||
209 | update_buflen(x->e, &buf_len); | ||
210 | |||
211 | if (priv) { | ||
212 | update_buflen(x->d, &buf_len); | ||
213 | update_buflen(x->p, &buf_len); | ||
214 | update_buflen(x->q, &buf_len); | ||
215 | update_buflen(x->dmp1, &buf_len); | ||
216 | update_buflen(x->dmq1, &buf_len); | ||
217 | update_buflen(x->iqmp, &buf_len); | ||
218 | } | ||
219 | |||
220 | m = malloc(buf_len + 10); | ||
221 | if (m == NULL) { | ||
222 | RSAerr(RSA_F_DO_RSA_PRINT, ERR_R_MALLOC_FAILURE); | ||
223 | goto err; | ||
224 | } | ||
225 | |||
226 | if (x->n != NULL) | ||
227 | mod_len = BN_num_bits(x->n); | ||
228 | |||
229 | if (!BIO_indent(bp, off, 128)) | ||
230 | goto err; | ||
231 | |||
232 | if (priv && x->d) { | ||
233 | if (BIO_printf(bp, "Private-Key: (%d bit)\n", mod_len) <= 0) | ||
234 | goto err; | ||
235 | str = "modulus:"; | ||
236 | s = "publicExponent:"; | ||
237 | } else { | ||
238 | if (BIO_printf(bp, "Public-Key: (%d bit)\n", mod_len) <= 0) | ||
239 | goto err; | ||
240 | str = "Modulus:"; | ||
241 | s= "Exponent:"; | ||
242 | } | ||
243 | if (!ASN1_bn_print(bp, str, x->n, m, off)) | ||
244 | goto err; | ||
245 | if (!ASN1_bn_print(bp, s, x->e, m, off)) | ||
246 | goto err; | ||
247 | if (priv) { | ||
248 | if (!ASN1_bn_print(bp, "privateExponent:", x->d,m, off)) | ||
249 | goto err; | ||
250 | if (!ASN1_bn_print(bp, "prime1:", x->p, m, off)) | ||
251 | goto err; | ||
252 | if (!ASN1_bn_print(bp, "prime2:", x->q, m, off)) | ||
253 | goto err; | ||
254 | if (!ASN1_bn_print(bp, "exponent1:", x->dmp1, m, off)) | ||
255 | goto err; | ||
256 | if (!ASN1_bn_print(bp, "exponent2:", x->dmq1, m, off)) | ||
257 | goto err; | ||
258 | if (!ASN1_bn_print(bp, "coefficient:", x->iqmp, m, off)) | ||
259 | goto err; | ||
260 | } | ||
261 | ret = 1; | ||
262 | err: | ||
263 | free(m); | ||
264 | return (ret); | ||
265 | } | ||
266 | |||
267 | static int | ||
268 | rsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent, ASN1_PCTX *ctx) | ||
269 | { | ||
270 | return do_rsa_print(bp, pkey->pkey.rsa, indent, 0); | ||
271 | } | ||
272 | |||
273 | static int | ||
274 | rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent, ASN1_PCTX *ctx) | ||
275 | { | ||
276 | return do_rsa_print(bp, pkey->pkey.rsa, indent, 1); | ||
277 | } | ||
278 | |||
279 | static RSA_PSS_PARAMS * | ||
280 | rsa_pss_decode(const X509_ALGOR *alg, X509_ALGOR **pmaskHash) | ||
281 | { | ||
282 | const unsigned char *p; | ||
283 | int plen; | ||
284 | RSA_PSS_PARAMS *pss; | ||
285 | |||
286 | *pmaskHash = NULL; | ||
287 | |||
288 | if (!alg->parameter || alg->parameter->type != V_ASN1_SEQUENCE) | ||
289 | return NULL; | ||
290 | |||
291 | p = alg->parameter->value.sequence->data; | ||
292 | plen = alg->parameter->value.sequence->length; | ||
293 | pss = d2i_RSA_PSS_PARAMS(NULL, &p, plen); | ||
294 | |||
295 | if (!pss) | ||
296 | return NULL; | ||
297 | |||
298 | if (pss->maskGenAlgorithm) { | ||
299 | ASN1_TYPE *param = pss->maskGenAlgorithm->parameter; | ||
300 | if (OBJ_obj2nid(pss->maskGenAlgorithm->algorithm) == NID_mgf1 && | ||
301 | param && param->type == V_ASN1_SEQUENCE) { | ||
302 | p = param->value.sequence->data; | ||
303 | plen = param->value.sequence->length; | ||
304 | *pmaskHash = d2i_X509_ALGOR(NULL, &p, plen); | ||
305 | } | ||
306 | } | ||
307 | |||
308 | return pss; | ||
309 | } | ||
310 | |||
311 | static int | ||
312 | rsa_pss_param_print(BIO *bp, RSA_PSS_PARAMS *pss, X509_ALGOR *maskHash, | ||
313 | int indent) | ||
314 | { | ||
315 | int rv = 0; | ||
316 | |||
317 | if (!pss) { | ||
318 | if (BIO_puts(bp, " (INVALID PSS PARAMETERS)\n") <= 0) | ||
319 | return 0; | ||
320 | return 1; | ||
321 | } | ||
322 | if (BIO_puts(bp, "\n") <= 0) | ||
323 | goto err; | ||
324 | if (!BIO_indent(bp, indent, 128)) | ||
325 | goto err; | ||
326 | if (BIO_puts(bp, "Hash Algorithm: ") <= 0) | ||
327 | goto err; | ||
328 | |||
329 | if (pss->hashAlgorithm) { | ||
330 | if (i2a_ASN1_OBJECT(bp, pss->hashAlgorithm->algorithm) <= 0) | ||
331 | goto err; | ||
332 | } else if (BIO_puts(bp, "sha1 (default)") <= 0) | ||
333 | goto err; | ||
334 | |||
335 | if (BIO_puts(bp, "\n") <= 0) | ||
336 | goto err; | ||
337 | |||
338 | if (!BIO_indent(bp, indent, 128)) | ||
339 | goto err; | ||
340 | |||
341 | if (BIO_puts(bp, "Mask Algorithm: ") <= 0) | ||
342 | goto err; | ||
343 | if (pss->maskGenAlgorithm) { | ||
344 | if (i2a_ASN1_OBJECT(bp, pss->maskGenAlgorithm->algorithm) <= 0) | ||
345 | goto err; | ||
346 | if (BIO_puts(bp, " with ") <= 0) | ||
347 | goto err; | ||
348 | if (maskHash) { | ||
349 | if (i2a_ASN1_OBJECT(bp, maskHash->algorithm) <= 0) | ||
350 | goto err; | ||
351 | } else if (BIO_puts(bp, "INVALID") <= 0) | ||
352 | goto err; | ||
353 | } else if (BIO_puts(bp, "mgf1 with sha1 (default)") <= 0) | ||
354 | goto err; | ||
355 | BIO_puts(bp, "\n"); | ||
356 | |||
357 | if (!BIO_indent(bp, indent, 128)) | ||
358 | goto err; | ||
359 | if (BIO_puts(bp, "Salt Length: 0x") <= 0) | ||
360 | goto err; | ||
361 | if (pss->saltLength) { | ||
362 | if (i2a_ASN1_INTEGER(bp, pss->saltLength) <= 0) | ||
363 | goto err; | ||
364 | } else if (BIO_puts(bp, "14 (default)") <= 0) | ||
365 | goto err; | ||
366 | BIO_puts(bp, "\n"); | ||
367 | |||
368 | if (!BIO_indent(bp, indent, 128)) | ||
369 | goto err; | ||
370 | if (BIO_puts(bp, "Trailer Field: 0x") <= 0) | ||
371 | goto err; | ||
372 | if (pss->trailerField) { | ||
373 | if (i2a_ASN1_INTEGER(bp, pss->trailerField) <= 0) | ||
374 | goto err; | ||
375 | } else if (BIO_puts(bp, "BC (default)") <= 0) | ||
376 | goto err; | ||
377 | BIO_puts(bp, "\n"); | ||
378 | |||
379 | rv = 1; | ||
380 | |||
381 | err: | ||
382 | return rv; | ||
383 | } | ||
384 | |||
385 | static int | ||
386 | rsa_sig_print(BIO *bp, const X509_ALGOR *sigalg, const ASN1_STRING *sig, | ||
387 | int indent, ASN1_PCTX *pctx) | ||
388 | { | ||
389 | if (OBJ_obj2nid(sigalg->algorithm) == NID_rsassaPss) { | ||
390 | int rv; | ||
391 | RSA_PSS_PARAMS *pss; | ||
392 | X509_ALGOR *maskHash; | ||
393 | pss = rsa_pss_decode(sigalg, &maskHash); | ||
394 | rv = rsa_pss_param_print(bp, pss, maskHash, indent); | ||
395 | if (pss) | ||
396 | RSA_PSS_PARAMS_free(pss); | ||
397 | if (maskHash) | ||
398 | X509_ALGOR_free(maskHash); | ||
399 | if (!rv) | ||
400 | return 0; | ||
401 | } else if (!sig && BIO_puts(bp, "\n") <= 0) | ||
402 | return 0; | ||
403 | if (sig) | ||
404 | return X509_signature_dump(bp, sig, indent); | ||
405 | return 1; | ||
406 | } | ||
407 | |||
408 | static int | ||
409 | rsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2) | ||
410 | { | ||
411 | X509_ALGOR *alg = NULL; | ||
412 | |||
413 | switch (op) { | ||
414 | case ASN1_PKEY_CTRL_PKCS7_SIGN: | ||
415 | if (arg1 == 0) | ||
416 | PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, NULL, &alg); | ||
417 | break; | ||
418 | |||
419 | case ASN1_PKEY_CTRL_PKCS7_ENCRYPT: | ||
420 | if (arg1 == 0) | ||
421 | PKCS7_RECIP_INFO_get0_alg(arg2, &alg); | ||
422 | break; | ||
423 | #ifndef OPENSSL_NO_CMS | ||
424 | case ASN1_PKEY_CTRL_CMS_SIGN: | ||
425 | if (arg1 == 0) | ||
426 | CMS_SignerInfo_get0_algs(arg2, NULL, NULL, NULL, &alg); | ||
427 | break; | ||
428 | |||
429 | case ASN1_PKEY_CTRL_CMS_ENVELOPE: | ||
430 | if (arg1 == 0) | ||
431 | CMS_RecipientInfo_ktri_get0_algs(arg2, NULL, NULL, &alg); | ||
432 | break; | ||
433 | #endif | ||
434 | |||
435 | case ASN1_PKEY_CTRL_DEFAULT_MD_NID: | ||
436 | *(int *)arg2 = NID_sha1; | ||
437 | return 1; | ||
438 | |||
439 | default: | ||
440 | return -2; | ||
441 | } | ||
442 | |||
443 | if (alg) | ||
444 | X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), | ||
445 | V_ASN1_NULL, 0); | ||
446 | |||
447 | return 1; | ||
448 | } | ||
449 | |||
450 | /* Customised RSA item verification routine. This is called | ||
451 | * when a signature is encountered requiring special handling. We | ||
452 | * currently only handle PSS. | ||
453 | */ | ||
454 | static int | ||
455 | rsa_item_verify(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn, | ||
456 | X509_ALGOR *sigalg, ASN1_BIT_STRING *sig, EVP_PKEY *pkey) | ||
457 | { | ||
458 | int rv = -1; | ||
459 | int saltlen; | ||
460 | const EVP_MD *mgf1md = NULL, *md = NULL; | ||
461 | RSA_PSS_PARAMS *pss; | ||
462 | X509_ALGOR *maskHash; | ||
463 | EVP_PKEY_CTX *pkctx; | ||
464 | |||
465 | /* Sanity check: make sure it is PSS */ | ||
466 | if (OBJ_obj2nid(sigalg->algorithm) != NID_rsassaPss) { | ||
467 | RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_SIGNATURE_TYPE); | ||
468 | return -1; | ||
469 | } | ||
470 | |||
471 | /* Decode PSS parameters */ | ||
472 | pss = rsa_pss_decode(sigalg, &maskHash); | ||
473 | |||
474 | if (pss == NULL) { | ||
475 | RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_INVALID_PSS_PARAMETERS); | ||
476 | goto err; | ||
477 | } | ||
478 | /* Check mask and lookup mask hash algorithm */ | ||
479 | if (pss->maskGenAlgorithm) { | ||
480 | if (OBJ_obj2nid(pss->maskGenAlgorithm->algorithm) != NID_mgf1) { | ||
481 | RSAerr(RSA_F_RSA_ITEM_VERIFY, | ||
482 | RSA_R_UNSUPPORTED_MASK_ALGORITHM); | ||
483 | goto err; | ||
484 | } | ||
485 | if (!maskHash) { | ||
486 | RSAerr(RSA_F_RSA_ITEM_VERIFY, | ||
487 | RSA_R_UNSUPPORTED_MASK_PARAMETER); | ||
488 | goto err; | ||
489 | } | ||
490 | mgf1md = EVP_get_digestbyobj(maskHash->algorithm); | ||
491 | if (mgf1md == NULL) { | ||
492 | RSAerr(RSA_F_RSA_ITEM_VERIFY, | ||
493 | RSA_R_UNKNOWN_MASK_DIGEST); | ||
494 | goto err; | ||
495 | } | ||
496 | } else | ||
497 | mgf1md = EVP_sha1(); | ||
498 | |||
499 | if (pss->hashAlgorithm) { | ||
500 | md = EVP_get_digestbyobj(pss->hashAlgorithm->algorithm); | ||
501 | if (md == NULL) { | ||
502 | RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNKNOWN_PSS_DIGEST); | ||
503 | goto err; | ||
504 | } | ||
505 | } else | ||
506 | md = EVP_sha1(); | ||
507 | |||
508 | if (pss->saltLength) { | ||
509 | saltlen = ASN1_INTEGER_get(pss->saltLength); | ||
510 | |||
511 | /* Could perform more salt length sanity checks but the main | ||
512 | * RSA routines will trap other invalid values anyway. | ||
513 | */ | ||
514 | if (saltlen < 0) { | ||
515 | RSAerr(RSA_F_RSA_ITEM_VERIFY, | ||
516 | RSA_R_INVALID_SALT_LENGTH); | ||
517 | goto err; | ||
518 | } | ||
519 | } else | ||
520 | saltlen = 20; | ||
521 | |||
522 | /* low-level routines support only trailer field 0xbc (value 1) | ||
523 | * and PKCS#1 says we should reject any other value anyway. | ||
524 | */ | ||
525 | if (pss->trailerField && ASN1_INTEGER_get(pss->trailerField) != 1) { | ||
526 | RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_INVALID_TRAILER); | ||
527 | goto err; | ||
528 | } | ||
529 | |||
530 | /* We have all parameters now set up context */ | ||
531 | |||
532 | if (!EVP_DigestVerifyInit(ctx, &pkctx, md, NULL, pkey)) | ||
533 | goto err; | ||
534 | |||
535 | if (EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_PSS_PADDING) <= 0) | ||
536 | goto err; | ||
537 | |||
538 | if (EVP_PKEY_CTX_set_rsa_pss_saltlen(pkctx, saltlen) <= 0) | ||
539 | goto err; | ||
540 | |||
541 | if (EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md) <= 0) | ||
542 | goto err; | ||
543 | /* Carry on */ | ||
544 | rv = 2; | ||
545 | |||
546 | err: | ||
547 | RSA_PSS_PARAMS_free(pss); | ||
548 | if (maskHash) | ||
549 | X509_ALGOR_free(maskHash); | ||
550 | return rv; | ||
551 | } | ||
552 | |||
553 | static int | ||
554 | rsa_item_sign(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn, | ||
555 | X509_ALGOR *alg1, X509_ALGOR *alg2, ASN1_BIT_STRING *sig) | ||
556 | { | ||
557 | int pad_mode; | ||
558 | EVP_PKEY_CTX *pkctx = ctx->pctx; | ||
559 | |||
560 | if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0) | ||
561 | return 0; | ||
562 | if (pad_mode == RSA_PKCS1_PADDING) | ||
563 | return 2; | ||
564 | if (pad_mode == RSA_PKCS1_PSS_PADDING) { | ||
565 | const EVP_MD *sigmd, *mgf1md; | ||
566 | RSA_PSS_PARAMS *pss = NULL; | ||
567 | X509_ALGOR *mgf1alg = NULL; | ||
568 | ASN1_STRING *os1 = NULL, *os2 = NULL; | ||
569 | EVP_PKEY *pk = EVP_PKEY_CTX_get0_pkey(pkctx); | ||
570 | int saltlen, rv = 0; | ||
571 | |||
572 | sigmd = EVP_MD_CTX_md(ctx); | ||
573 | if (EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) <= 0) | ||
574 | goto err; | ||
575 | if (!EVP_PKEY_CTX_get_rsa_pss_saltlen(pkctx, &saltlen)) | ||
576 | goto err; | ||
577 | if (saltlen == -1) | ||
578 | saltlen = EVP_MD_size(sigmd); | ||
579 | else if (saltlen == -2) { | ||
580 | saltlen = EVP_PKEY_size(pk) - EVP_MD_size(sigmd) - 2; | ||
581 | if (((EVP_PKEY_bits(pk) - 1) & 0x7) == 0) | ||
582 | saltlen--; | ||
583 | } | ||
584 | pss = RSA_PSS_PARAMS_new(); | ||
585 | if (!pss) | ||
586 | goto err; | ||
587 | if (saltlen != 20) { | ||
588 | pss->saltLength = ASN1_INTEGER_new(); | ||
589 | if (!pss->saltLength) | ||
590 | goto err; | ||
591 | if (!ASN1_INTEGER_set(pss->saltLength, saltlen)) | ||
592 | goto err; | ||
593 | } | ||
594 | if (EVP_MD_type(sigmd) != NID_sha1) { | ||
595 | pss->hashAlgorithm = X509_ALGOR_new(); | ||
596 | if (!pss->hashAlgorithm) | ||
597 | goto err; | ||
598 | X509_ALGOR_set_md(pss->hashAlgorithm, sigmd); | ||
599 | } | ||
600 | if (EVP_MD_type(mgf1md) != NID_sha1) { | ||
601 | ASN1_STRING *stmp = NULL; | ||
602 | /* need to embed algorithm ID inside another */ | ||
603 | mgf1alg = X509_ALGOR_new(); | ||
604 | X509_ALGOR_set_md(mgf1alg, mgf1md); | ||
605 | if (!ASN1_item_pack(mgf1alg, ASN1_ITEM_rptr(X509_ALGOR), | ||
606 | &stmp)) | ||
607 | goto err; | ||
608 | pss->maskGenAlgorithm = X509_ALGOR_new(); | ||
609 | if (!pss->maskGenAlgorithm) | ||
610 | goto err; | ||
611 | X509_ALGOR_set0(pss->maskGenAlgorithm, | ||
612 | OBJ_nid2obj(NID_mgf1), V_ASN1_SEQUENCE, stmp); | ||
613 | } | ||
614 | /* Finally create string with pss parameter encoding. */ | ||
615 | if (!ASN1_item_pack(pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), &os1)) | ||
616 | goto err; | ||
617 | if (alg2) { | ||
618 | os2 = ASN1_STRING_dup(os1); | ||
619 | if (!os2) | ||
620 | goto err; | ||
621 | X509_ALGOR_set0(alg2, OBJ_nid2obj(NID_rsassaPss), | ||
622 | V_ASN1_SEQUENCE, os2); | ||
623 | } | ||
624 | X509_ALGOR_set0(alg1, OBJ_nid2obj(NID_rsassaPss), | ||
625 | V_ASN1_SEQUENCE, os1); | ||
626 | os1 = os2 = NULL; | ||
627 | rv = 3; | ||
628 | err: | ||
629 | if (mgf1alg) | ||
630 | X509_ALGOR_free(mgf1alg); | ||
631 | if (pss) | ||
632 | RSA_PSS_PARAMS_free(pss); | ||
633 | ASN1_STRING_free(os1); | ||
634 | return rv; | ||
635 | } | ||
636 | return 2; | ||
637 | } | ||
638 | |||
639 | const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[] = { | ||
640 | { | ||
641 | .pkey_id = EVP_PKEY_RSA, | ||
642 | .pkey_base_id = EVP_PKEY_RSA, | ||
643 | .pkey_flags = ASN1_PKEY_SIGPARAM_NULL, | ||
644 | |||
645 | .pem_str = "RSA", | ||
646 | .info = "OpenSSL RSA method", | ||
647 | |||
648 | .pub_decode = rsa_pub_decode, | ||
649 | .pub_encode = rsa_pub_encode, | ||
650 | .pub_cmp = rsa_pub_cmp, | ||
651 | .pub_print = rsa_pub_print, | ||
652 | |||
653 | .priv_decode = rsa_priv_decode, | ||
654 | .priv_encode = rsa_priv_encode, | ||
655 | .priv_print = rsa_priv_print, | ||
656 | |||
657 | .pkey_size = int_rsa_size, | ||
658 | .pkey_bits = rsa_bits, | ||
659 | |||
660 | .sig_print = rsa_sig_print, | ||
661 | |||
662 | .pkey_free = int_rsa_free, | ||
663 | .pkey_ctrl = rsa_pkey_ctrl, | ||
664 | .old_priv_decode = old_rsa_priv_decode, | ||
665 | .old_priv_encode = old_rsa_priv_encode, | ||
666 | .item_verify = rsa_item_verify, | ||
667 | .item_sign = rsa_item_sign | ||
668 | }, | ||
669 | |||
670 | { | ||
671 | .pkey_id = EVP_PKEY_RSA2, | ||
672 | .pkey_base_id = EVP_PKEY_RSA, | ||
673 | .pkey_flags = ASN1_PKEY_ALIAS | ||
674 | } | ||
675 | }; | ||