diff options
Diffstat (limited to 'src/lib/libcrypto/rsa/rsa_ameth.c')
-rw-r--r-- | src/lib/libcrypto/rsa/rsa_ameth.c | 698 |
1 files changed, 0 insertions, 698 deletions
diff --git a/src/lib/libcrypto/rsa/rsa_ameth.c b/src/lib/libcrypto/rsa/rsa_ameth.c deleted file mode 100644 index 2460910ab2..0000000000 --- a/src/lib/libcrypto/rsa/rsa_ameth.c +++ /dev/null | |||
@@ -1,698 +0,0 @@ | |||
1 | /* crypto/rsa/rsa_ameth.c */ | ||
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 | #include "cryptlib.h" | ||
61 | #include <openssl/asn1t.h> | ||
62 | #include <openssl/x509.h> | ||
63 | #include <openssl/rsa.h> | ||
64 | #include <openssl/bn.h> | ||
65 | #ifndef OPENSSL_NO_CMS | ||
66 | #include <openssl/cms.h> | ||
67 | #endif | ||
68 | #include "asn1_locl.h" | ||
69 | |||
70 | static int rsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey) | ||
71 | { | ||
72 | unsigned char *penc = NULL; | ||
73 | int penclen; | ||
74 | penclen = i2d_RSAPublicKey(pkey->pkey.rsa, &penc); | ||
75 | if (penclen <= 0) | ||
76 | return 0; | ||
77 | if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_RSA), | ||
78 | V_ASN1_NULL, NULL, penc, penclen)) | ||
79 | return 1; | ||
80 | |||
81 | OPENSSL_free(penc); | ||
82 | return 0; | ||
83 | } | ||
84 | |||
85 | static int rsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey) | ||
86 | { | ||
87 | const unsigned char *p; | ||
88 | int pklen; | ||
89 | RSA *rsa = NULL; | ||
90 | if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, NULL, pubkey)) | ||
91 | return 0; | ||
92 | if (!(rsa = d2i_RSAPublicKey(NULL, &p, pklen))) | ||
93 | { | ||
94 | RSAerr(RSA_F_RSA_PUB_DECODE, ERR_R_RSA_LIB); | ||
95 | return 0; | ||
96 | } | ||
97 | EVP_PKEY_assign_RSA (pkey, rsa); | ||
98 | return 1; | ||
99 | } | ||
100 | |||
101 | static int rsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) | ||
102 | { | ||
103 | if (BN_cmp(b->pkey.rsa->n,a->pkey.rsa->n) != 0 | ||
104 | || BN_cmp(b->pkey.rsa->e,a->pkey.rsa->e) != 0) | ||
105 | return 0; | ||
106 | return 1; | ||
107 | } | ||
108 | |||
109 | static int old_rsa_priv_decode(EVP_PKEY *pkey, | ||
110 | const unsigned char **pder, int derlen) | ||
111 | { | ||
112 | RSA *rsa; | ||
113 | if (!(rsa = d2i_RSAPrivateKey (NULL, pder, derlen))) | ||
114 | { | ||
115 | RSAerr(RSA_F_OLD_RSA_PRIV_DECODE, ERR_R_RSA_LIB); | ||
116 | return 0; | ||
117 | } | ||
118 | EVP_PKEY_assign_RSA(pkey, rsa); | ||
119 | return 1; | ||
120 | } | ||
121 | |||
122 | static int old_rsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder) | ||
123 | { | ||
124 | return i2d_RSAPrivateKey(pkey->pkey.rsa, pder); | ||
125 | } | ||
126 | |||
127 | static int rsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey) | ||
128 | { | ||
129 | unsigned char *rk = NULL; | ||
130 | int rklen; | ||
131 | rklen = i2d_RSAPrivateKey(pkey->pkey.rsa, &rk); | ||
132 | |||
133 | if (rklen <= 0) | ||
134 | { | ||
135 | RSAerr(RSA_F_RSA_PRIV_ENCODE,ERR_R_MALLOC_FAILURE); | ||
136 | return 0; | ||
137 | } | ||
138 | |||
139 | if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_rsaEncryption), 0, | ||
140 | V_ASN1_NULL, NULL, rk, rklen)) | ||
141 | { | ||
142 | RSAerr(RSA_F_RSA_PRIV_ENCODE,ERR_R_MALLOC_FAILURE); | ||
143 | return 0; | ||
144 | } | ||
145 | |||
146 | return 1; | ||
147 | } | ||
148 | |||
149 | static int rsa_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8) | ||
150 | { | ||
151 | const unsigned char *p; | ||
152 | int pklen; | ||
153 | if (!PKCS8_pkey_get0(NULL, &p, &pklen, NULL, p8)) | ||
154 | return 0; | ||
155 | return old_rsa_priv_decode(pkey, &p, pklen); | ||
156 | } | ||
157 | |||
158 | static int int_rsa_size(const EVP_PKEY *pkey) | ||
159 | { | ||
160 | return RSA_size(pkey->pkey.rsa); | ||
161 | } | ||
162 | |||
163 | static int rsa_bits(const EVP_PKEY *pkey) | ||
164 | { | ||
165 | return BN_num_bits(pkey->pkey.rsa->n); | ||
166 | } | ||
167 | |||
168 | static void int_rsa_free(EVP_PKEY *pkey) | ||
169 | { | ||
170 | RSA_free(pkey->pkey.rsa); | ||
171 | } | ||
172 | |||
173 | |||
174 | static void update_buflen(const BIGNUM *b, size_t *pbuflen) | ||
175 | { | ||
176 | size_t i; | ||
177 | if (!b) | ||
178 | return; | ||
179 | if (*pbuflen < (i = (size_t)BN_num_bytes(b))) | ||
180 | *pbuflen = i; | ||
181 | } | ||
182 | |||
183 | static int do_rsa_print(BIO *bp, const RSA *x, int off, int priv) | ||
184 | { | ||
185 | char *str; | ||
186 | const char *s; | ||
187 | unsigned char *m=NULL; | ||
188 | int ret=0, mod_len = 0; | ||
189 | size_t buf_len=0; | ||
190 | |||
191 | update_buflen(x->n, &buf_len); | ||
192 | update_buflen(x->e, &buf_len); | ||
193 | |||
194 | if (priv) | ||
195 | { | ||
196 | update_buflen(x->d, &buf_len); | ||
197 | update_buflen(x->p, &buf_len); | ||
198 | update_buflen(x->q, &buf_len); | ||
199 | update_buflen(x->dmp1, &buf_len); | ||
200 | update_buflen(x->dmq1, &buf_len); | ||
201 | update_buflen(x->iqmp, &buf_len); | ||
202 | } | ||
203 | |||
204 | m=(unsigned char *)OPENSSL_malloc(buf_len+10); | ||
205 | if (m == NULL) | ||
206 | { | ||
207 | RSAerr(RSA_F_DO_RSA_PRINT,ERR_R_MALLOC_FAILURE); | ||
208 | goto err; | ||
209 | } | ||
210 | |||
211 | if (x->n != NULL) | ||
212 | mod_len = BN_num_bits(x->n); | ||
213 | |||
214 | if(!BIO_indent(bp,off,128)) | ||
215 | goto err; | ||
216 | |||
217 | if (priv && x->d) | ||
218 | { | ||
219 | if (BIO_printf(bp,"Private-Key: (%d bit)\n", mod_len) | ||
220 | <= 0) goto err; | ||
221 | str = "modulus:"; | ||
222 | s = "publicExponent:"; | ||
223 | } | ||
224 | else | ||
225 | { | ||
226 | if (BIO_printf(bp,"Public-Key: (%d bit)\n", mod_len) | ||
227 | <= 0) goto err; | ||
228 | str = "Modulus:"; | ||
229 | s= "Exponent:"; | ||
230 | } | ||
231 | if (!ASN1_bn_print(bp,str,x->n,m,off)) goto err; | ||
232 | if (!ASN1_bn_print(bp,s,x->e,m,off)) | ||
233 | goto err; | ||
234 | if (priv) | ||
235 | { | ||
236 | if (!ASN1_bn_print(bp,"privateExponent:",x->d,m,off)) | ||
237 | goto err; | ||
238 | if (!ASN1_bn_print(bp,"prime1:",x->p,m,off)) | ||
239 | goto err; | ||
240 | if (!ASN1_bn_print(bp,"prime2:",x->q,m,off)) | ||
241 | goto err; | ||
242 | if (!ASN1_bn_print(bp,"exponent1:",x->dmp1,m,off)) | ||
243 | goto err; | ||
244 | if (!ASN1_bn_print(bp,"exponent2:",x->dmq1,m,off)) | ||
245 | goto err; | ||
246 | if (!ASN1_bn_print(bp,"coefficient:",x->iqmp,m,off)) | ||
247 | goto err; | ||
248 | } | ||
249 | ret=1; | ||
250 | err: | ||
251 | if (m != NULL) OPENSSL_free(m); | ||
252 | return(ret); | ||
253 | } | ||
254 | |||
255 | static int rsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent, | ||
256 | ASN1_PCTX *ctx) | ||
257 | { | ||
258 | return do_rsa_print(bp, pkey->pkey.rsa, indent, 0); | ||
259 | } | ||
260 | |||
261 | |||
262 | static int rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent, | ||
263 | ASN1_PCTX *ctx) | ||
264 | { | ||
265 | return do_rsa_print(bp, pkey->pkey.rsa, indent, 1); | ||
266 | } | ||
267 | |||
268 | static RSA_PSS_PARAMS *rsa_pss_decode(const X509_ALGOR *alg, | ||
269 | X509_ALGOR **pmaskHash) | ||
270 | { | ||
271 | const unsigned char *p; | ||
272 | int plen; | ||
273 | RSA_PSS_PARAMS *pss; | ||
274 | |||
275 | *pmaskHash = NULL; | ||
276 | |||
277 | if (!alg->parameter || alg->parameter->type != V_ASN1_SEQUENCE) | ||
278 | return NULL; | ||
279 | p = alg->parameter->value.sequence->data; | ||
280 | plen = alg->parameter->value.sequence->length; | ||
281 | pss = d2i_RSA_PSS_PARAMS(NULL, &p, plen); | ||
282 | |||
283 | if (!pss) | ||
284 | return NULL; | ||
285 | |||
286 | if (pss->maskGenAlgorithm) | ||
287 | { | ||
288 | ASN1_TYPE *param = pss->maskGenAlgorithm->parameter; | ||
289 | if (OBJ_obj2nid(pss->maskGenAlgorithm->algorithm) == NID_mgf1 | ||
290 | && param->type == V_ASN1_SEQUENCE) | ||
291 | { | ||
292 | p = param->value.sequence->data; | ||
293 | plen = param->value.sequence->length; | ||
294 | *pmaskHash = d2i_X509_ALGOR(NULL, &p, plen); | ||
295 | } | ||
296 | } | ||
297 | |||
298 | return pss; | ||
299 | } | ||
300 | |||
301 | static int rsa_pss_param_print(BIO *bp, RSA_PSS_PARAMS *pss, | ||
302 | X509_ALGOR *maskHash, int indent) | ||
303 | { | ||
304 | int rv = 0; | ||
305 | if (!pss) | ||
306 | { | ||
307 | if (BIO_puts(bp, " (INVALID PSS PARAMETERS)\n") <= 0) | ||
308 | return 0; | ||
309 | return 1; | ||
310 | } | ||
311 | if (BIO_puts(bp, "\n") <= 0) | ||
312 | goto err; | ||
313 | if (!BIO_indent(bp, indent, 128)) | ||
314 | goto err; | ||
315 | if (BIO_puts(bp, "Hash Algorithm: ") <= 0) | ||
316 | goto err; | ||
317 | |||
318 | if (pss->hashAlgorithm) | ||
319 | { | ||
320 | if (i2a_ASN1_OBJECT(bp, pss->hashAlgorithm->algorithm) <= 0) | ||
321 | goto err; | ||
322 | } | ||
323 | else if (BIO_puts(bp, "sha1 (default)") <= 0) | ||
324 | goto err; | ||
325 | |||
326 | if (BIO_puts(bp, "\n") <= 0) | ||
327 | goto err; | ||
328 | |||
329 | if (!BIO_indent(bp, indent, 128)) | ||
330 | goto err; | ||
331 | |||
332 | if (BIO_puts(bp, "Mask Algorithm: ") <= 0) | ||
333 | goto err; | ||
334 | if (pss->maskGenAlgorithm) | ||
335 | { | ||
336 | if (i2a_ASN1_OBJECT(bp, pss->maskGenAlgorithm->algorithm) <= 0) | ||
337 | goto err; | ||
338 | if (BIO_puts(bp, " with ") <= 0) | ||
339 | goto err; | ||
340 | if (maskHash) | ||
341 | { | ||
342 | if (i2a_ASN1_OBJECT(bp, maskHash->algorithm) <= 0) | ||
343 | goto err; | ||
344 | } | ||
345 | else if (BIO_puts(bp, "INVALID") <= 0) | ||
346 | goto err; | ||
347 | } | ||
348 | else if (BIO_puts(bp, "mgf1 with sha1 (default)") <= 0) | ||
349 | goto err; | ||
350 | BIO_puts(bp, "\n"); | ||
351 | |||
352 | if (!BIO_indent(bp, indent, 128)) | ||
353 | goto err; | ||
354 | if (BIO_puts(bp, "Salt Length: ") <= 0) | ||
355 | goto err; | ||
356 | if (pss->saltLength) | ||
357 | { | ||
358 | if (i2a_ASN1_INTEGER(bp, pss->saltLength) <= 0) | ||
359 | goto err; | ||
360 | } | ||
361 | else if (BIO_puts(bp, "20 (default)") <= 0) | ||
362 | goto err; | ||
363 | BIO_puts(bp, "\n"); | ||
364 | |||
365 | if (!BIO_indent(bp, indent, 128)) | ||
366 | goto err; | ||
367 | if (BIO_puts(bp, "Trailer Field: ") <= 0) | ||
368 | goto err; | ||
369 | if (pss->trailerField) | ||
370 | { | ||
371 | if (i2a_ASN1_INTEGER(bp, pss->trailerField) <= 0) | ||
372 | goto err; | ||
373 | } | ||
374 | else if (BIO_puts(bp, "0xbc (default)") <= 0) | ||
375 | goto err; | ||
376 | BIO_puts(bp, "\n"); | ||
377 | |||
378 | rv = 1; | ||
379 | |||
380 | err: | ||
381 | return rv; | ||
382 | |||
383 | } | ||
384 | |||
385 | static int rsa_sig_print(BIO *bp, const X509_ALGOR *sigalg, | ||
386 | const ASN1_STRING *sig, | ||
387 | int indent, ASN1_PCTX *pctx) | ||
388 | { | ||
389 | if (OBJ_obj2nid(sigalg->algorithm) == NID_rsassaPss) | ||
390 | { | ||
391 | int rv; | ||
392 | RSA_PSS_PARAMS *pss; | ||
393 | X509_ALGOR *maskHash; | ||
394 | pss = rsa_pss_decode(sigalg, &maskHash); | ||
395 | rv = rsa_pss_param_print(bp, pss, maskHash, indent); | ||
396 | if (pss) | ||
397 | RSA_PSS_PARAMS_free(pss); | ||
398 | if (maskHash) | ||
399 | X509_ALGOR_free(maskHash); | ||
400 | if (!rv) | ||
401 | return 0; | ||
402 | } | ||
403 | else if (!sig && BIO_puts(bp, "\n") <= 0) | ||
404 | return 0; | ||
405 | if (sig) | ||
406 | return X509_signature_dump(bp, sig, indent); | ||
407 | return 1; | ||
408 | } | ||
409 | |||
410 | static int rsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2) | ||
411 | { | ||
412 | X509_ALGOR *alg = NULL; | ||
413 | switch (op) | ||
414 | { | ||
415 | |||
416 | case ASN1_PKEY_CTRL_PKCS7_SIGN: | ||
417 | if (arg1 == 0) | ||
418 | PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, NULL, &alg); | ||
419 | break; | ||
420 | |||
421 | case ASN1_PKEY_CTRL_PKCS7_ENCRYPT: | ||
422 | if (arg1 == 0) | ||
423 | PKCS7_RECIP_INFO_get0_alg(arg2, &alg); | ||
424 | break; | ||
425 | #ifndef OPENSSL_NO_CMS | ||
426 | case ASN1_PKEY_CTRL_CMS_SIGN: | ||
427 | if (arg1 == 0) | ||
428 | CMS_SignerInfo_get0_algs(arg2, NULL, NULL, NULL, &alg); | ||
429 | break; | ||
430 | |||
431 | case ASN1_PKEY_CTRL_CMS_ENVELOPE: | ||
432 | if (arg1 == 0) | ||
433 | CMS_RecipientInfo_ktri_get0_algs(arg2, NULL, NULL, &alg); | ||
434 | break; | ||
435 | #endif | ||
436 | |||
437 | case ASN1_PKEY_CTRL_DEFAULT_MD_NID: | ||
438 | *(int *)arg2 = NID_sha1; | ||
439 | return 1; | ||
440 | |||
441 | default: | ||
442 | return -2; | ||
443 | |||
444 | } | ||
445 | |||
446 | if (alg) | ||
447 | X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), | ||
448 | V_ASN1_NULL, 0); | ||
449 | |||
450 | return 1; | ||
451 | |||
452 | } | ||
453 | |||
454 | /* Customised RSA item verification routine. This is called | ||
455 | * when a signature is encountered requiring special handling. We | ||
456 | * currently only handle PSS. | ||
457 | */ | ||
458 | |||
459 | |||
460 | static int rsa_item_verify(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn, | ||
461 | X509_ALGOR *sigalg, ASN1_BIT_STRING *sig, | ||
462 | EVP_PKEY *pkey) | ||
463 | { | ||
464 | int rv = -1; | ||
465 | int saltlen; | ||
466 | const EVP_MD *mgf1md = NULL, *md = NULL; | ||
467 | RSA_PSS_PARAMS *pss; | ||
468 | X509_ALGOR *maskHash; | ||
469 | EVP_PKEY_CTX *pkctx; | ||
470 | /* Sanity check: make sure it is PSS */ | ||
471 | if (OBJ_obj2nid(sigalg->algorithm) != NID_rsassaPss) | ||
472 | { | ||
473 | RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_SIGNATURE_TYPE); | ||
474 | return -1; | ||
475 | } | ||
476 | /* Decode PSS parameters */ | ||
477 | pss = rsa_pss_decode(sigalg, &maskHash); | ||
478 | |||
479 | if (pss == NULL) | ||
480 | { | ||
481 | RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_INVALID_PSS_PARAMETERS); | ||
482 | goto err; | ||
483 | } | ||
484 | /* Check mask and lookup mask hash algorithm */ | ||
485 | if (pss->maskGenAlgorithm) | ||
486 | { | ||
487 | if (OBJ_obj2nid(pss->maskGenAlgorithm->algorithm) != NID_mgf1) | ||
488 | { | ||
489 | RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_MASK_ALGORITHM); | ||
490 | goto err; | ||
491 | } | ||
492 | if (!maskHash) | ||
493 | { | ||
494 | RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_MASK_PARAMETER); | ||
495 | goto err; | ||
496 | } | ||
497 | mgf1md = EVP_get_digestbyobj(maskHash->algorithm); | ||
498 | if (mgf1md == NULL) | ||
499 | { | ||
500 | RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNKNOWN_MASK_DIGEST); | ||
501 | goto err; | ||
502 | } | ||
503 | } | ||
504 | else | ||
505 | mgf1md = EVP_sha1(); | ||
506 | |||
507 | if (pss->hashAlgorithm) | ||
508 | { | ||
509 | md = EVP_get_digestbyobj(pss->hashAlgorithm->algorithm); | ||
510 | if (md == NULL) | ||
511 | { | ||
512 | RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNKNOWN_PSS_DIGEST); | ||
513 | goto err; | ||
514 | } | ||
515 | } | ||
516 | else | ||
517 | md = EVP_sha1(); | ||
518 | |||
519 | if (pss->saltLength) | ||
520 | { | ||
521 | saltlen = ASN1_INTEGER_get(pss->saltLength); | ||
522 | |||
523 | /* Could perform more salt length sanity checks but the main | ||
524 | * RSA routines will trap other invalid values anyway. | ||
525 | */ | ||
526 | if (saltlen < 0) | ||
527 | { | ||
528 | RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_INVALID_SALT_LENGTH); | ||
529 | goto err; | ||
530 | } | ||
531 | } | ||
532 | else | ||
533 | saltlen = 20; | ||
534 | |||
535 | /* low-level routines support only trailer field 0xbc (value 1) | ||
536 | * and PKCS#1 says we should reject any other value anyway. | ||
537 | */ | ||
538 | if (pss->trailerField && ASN1_INTEGER_get(pss->trailerField) != 1) | ||
539 | { | ||
540 | RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_INVALID_TRAILER); | ||
541 | goto err; | ||
542 | } | ||
543 | |||
544 | /* We have all parameters now set up context */ | ||
545 | |||
546 | if (!EVP_DigestVerifyInit(ctx, &pkctx, md, NULL, pkey)) | ||
547 | goto err; | ||
548 | |||
549 | if (EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_PSS_PADDING) <= 0) | ||
550 | goto err; | ||
551 | |||
552 | if (EVP_PKEY_CTX_set_rsa_pss_saltlen(pkctx, saltlen) <= 0) | ||
553 | goto err; | ||
554 | |||
555 | if (EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md) <= 0) | ||
556 | goto err; | ||
557 | /* Carry on */ | ||
558 | rv = 2; | ||
559 | |||
560 | err: | ||
561 | RSA_PSS_PARAMS_free(pss); | ||
562 | if (maskHash) | ||
563 | X509_ALGOR_free(maskHash); | ||
564 | return rv; | ||
565 | } | ||
566 | |||
567 | static int rsa_item_sign(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn, | ||
568 | X509_ALGOR *alg1, X509_ALGOR *alg2, | ||
569 | ASN1_BIT_STRING *sig) | ||
570 | { | ||
571 | int pad_mode; | ||
572 | EVP_PKEY_CTX *pkctx = ctx->pctx; | ||
573 | if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0) | ||
574 | return 0; | ||
575 | if (pad_mode == RSA_PKCS1_PADDING) | ||
576 | return 2; | ||
577 | if (pad_mode == RSA_PKCS1_PSS_PADDING) | ||
578 | { | ||
579 | const EVP_MD *sigmd, *mgf1md; | ||
580 | RSA_PSS_PARAMS *pss = NULL; | ||
581 | X509_ALGOR *mgf1alg = NULL; | ||
582 | ASN1_STRING *os1 = NULL, *os2 = NULL; | ||
583 | EVP_PKEY *pk = EVP_PKEY_CTX_get0_pkey(pkctx); | ||
584 | int saltlen, rv = 0; | ||
585 | sigmd = EVP_MD_CTX_md(ctx); | ||
586 | if (EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) <= 0) | ||
587 | goto err; | ||
588 | if (!EVP_PKEY_CTX_get_rsa_pss_saltlen(pkctx, &saltlen)) | ||
589 | goto err; | ||
590 | if (saltlen == -1) | ||
591 | saltlen = EVP_MD_size(sigmd); | ||
592 | else if (saltlen == -2) | ||
593 | { | ||
594 | saltlen = EVP_PKEY_size(pk) - EVP_MD_size(sigmd) - 2; | ||
595 | if (((EVP_PKEY_bits(pk) - 1) & 0x7) == 0) | ||
596 | saltlen--; | ||
597 | } | ||
598 | pss = RSA_PSS_PARAMS_new(); | ||
599 | if (!pss) | ||
600 | goto err; | ||
601 | if (saltlen != 20) | ||
602 | { | ||
603 | pss->saltLength = ASN1_INTEGER_new(); | ||
604 | if (!pss->saltLength) | ||
605 | goto err; | ||
606 | if (!ASN1_INTEGER_set(pss->saltLength, saltlen)) | ||
607 | goto err; | ||
608 | } | ||
609 | if (EVP_MD_type(sigmd) != NID_sha1) | ||
610 | { | ||
611 | pss->hashAlgorithm = X509_ALGOR_new(); | ||
612 | if (!pss->hashAlgorithm) | ||
613 | goto err; | ||
614 | X509_ALGOR_set_md(pss->hashAlgorithm, sigmd); | ||
615 | } | ||
616 | if (EVP_MD_type(mgf1md) != NID_sha1) | ||
617 | { | ||
618 | ASN1_STRING *stmp = NULL; | ||
619 | /* need to embed algorithm ID inside another */ | ||
620 | mgf1alg = X509_ALGOR_new(); | ||
621 | X509_ALGOR_set_md(mgf1alg, mgf1md); | ||
622 | if (!ASN1_item_pack(mgf1alg, ASN1_ITEM_rptr(X509_ALGOR), | ||
623 | &stmp)) | ||
624 | goto err; | ||
625 | pss->maskGenAlgorithm = X509_ALGOR_new(); | ||
626 | if (!pss->maskGenAlgorithm) | ||
627 | goto err; | ||
628 | X509_ALGOR_set0(pss->maskGenAlgorithm, | ||
629 | OBJ_nid2obj(NID_mgf1), | ||
630 | V_ASN1_SEQUENCE, stmp); | ||
631 | } | ||
632 | /* Finally create string with pss parameter encoding. */ | ||
633 | if (!ASN1_item_pack(pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), &os1)) | ||
634 | goto err; | ||
635 | if (alg2) | ||
636 | { | ||
637 | os2 = ASN1_STRING_dup(os1); | ||
638 | if (!os2) | ||
639 | goto err; | ||
640 | X509_ALGOR_set0(alg2, OBJ_nid2obj(NID_rsassaPss), | ||
641 | V_ASN1_SEQUENCE, os2); | ||
642 | } | ||
643 | X509_ALGOR_set0(alg1, OBJ_nid2obj(NID_rsassaPss), | ||
644 | V_ASN1_SEQUENCE, os1); | ||
645 | os1 = os2 = NULL; | ||
646 | rv = 3; | ||
647 | err: | ||
648 | if (mgf1alg) | ||
649 | X509_ALGOR_free(mgf1alg); | ||
650 | if (pss) | ||
651 | RSA_PSS_PARAMS_free(pss); | ||
652 | if (os1) | ||
653 | ASN1_STRING_free(os1); | ||
654 | return rv; | ||
655 | |||
656 | } | ||
657 | return 2; | ||
658 | } | ||
659 | |||
660 | const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[] = | ||
661 | { | ||
662 | { | ||
663 | EVP_PKEY_RSA, | ||
664 | EVP_PKEY_RSA, | ||
665 | ASN1_PKEY_SIGPARAM_NULL, | ||
666 | |||
667 | "RSA", | ||
668 | "OpenSSL RSA method", | ||
669 | |||
670 | rsa_pub_decode, | ||
671 | rsa_pub_encode, | ||
672 | rsa_pub_cmp, | ||
673 | rsa_pub_print, | ||
674 | |||
675 | rsa_priv_decode, | ||
676 | rsa_priv_encode, | ||
677 | rsa_priv_print, | ||
678 | |||
679 | int_rsa_size, | ||
680 | rsa_bits, | ||
681 | |||
682 | 0,0,0,0,0,0, | ||
683 | |||
684 | rsa_sig_print, | ||
685 | int_rsa_free, | ||
686 | rsa_pkey_ctrl, | ||
687 | old_rsa_priv_decode, | ||
688 | old_rsa_priv_encode, | ||
689 | rsa_item_verify, | ||
690 | rsa_item_sign | ||
691 | }, | ||
692 | |||
693 | { | ||
694 | EVP_PKEY_RSA2, | ||
695 | EVP_PKEY_RSA, | ||
696 | ASN1_PKEY_ALIAS | ||
697 | } | ||
698 | }; | ||