/src/openssl111/crypto/rsa/rsa_ameth.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * Copyright 2006-2020 The OpenSSL Project Authors. All Rights Reserved. |
3 | | * |
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 |
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 "crypto/asn1.h" |
17 | | #include "crypto/evp.h" |
18 | | #include "rsa_local.h" |
19 | | |
20 | | #ifndef OPENSSL_NO_CMS |
21 | | static int rsa_cms_sign(CMS_SignerInfo *si); |
22 | | static int rsa_cms_verify(CMS_SignerInfo *si); |
23 | | static int rsa_cms_decrypt(CMS_RecipientInfo *ri); |
24 | | static int rsa_cms_encrypt(CMS_RecipientInfo *ri); |
25 | | #endif |
26 | | |
27 | | static RSA_PSS_PARAMS *rsa_pss_decode(const X509_ALGOR *alg); |
28 | | |
29 | | /* Set any parameters associated with pkey */ |
30 | | static int rsa_param_encode(const EVP_PKEY *pkey, |
31 | | ASN1_STRING **pstr, int *pstrtype) |
32 | 0 | { |
33 | 0 | const RSA *rsa = pkey->pkey.rsa; |
34 | |
|
35 | 0 | *pstr = NULL; |
36 | | /* If RSA it's just NULL type */ |
37 | 0 | if (pkey->ameth->pkey_id != EVP_PKEY_RSA_PSS) { |
38 | 0 | *pstrtype = V_ASN1_NULL; |
39 | 0 | return 1; |
40 | 0 | } |
41 | | /* If no PSS parameters we omit parameters entirely */ |
42 | 0 | if (rsa->pss == NULL) { |
43 | 0 | *pstrtype = V_ASN1_UNDEF; |
44 | 0 | return 1; |
45 | 0 | } |
46 | | /* Encode PSS parameters */ |
47 | 0 | if (ASN1_item_pack(rsa->pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), pstr) == NULL) |
48 | 0 | return 0; |
49 | | |
50 | 0 | *pstrtype = V_ASN1_SEQUENCE; |
51 | 0 | return 1; |
52 | 0 | } |
53 | | /* Decode any parameters and set them in RSA structure */ |
54 | | static int rsa_param_decode(RSA *rsa, const X509_ALGOR *alg) |
55 | 0 | { |
56 | 0 | const ASN1_OBJECT *algoid; |
57 | 0 | const void *algp; |
58 | 0 | int algptype; |
59 | |
|
60 | 0 | X509_ALGOR_get0(&algoid, &algptype, &algp, alg); |
61 | 0 | if (OBJ_obj2nid(algoid) != EVP_PKEY_RSA_PSS) |
62 | 0 | return 1; |
63 | 0 | if (algptype == V_ASN1_UNDEF) |
64 | 0 | return 1; |
65 | 0 | if (algptype != V_ASN1_SEQUENCE) { |
66 | 0 | RSAerr(RSA_F_RSA_PARAM_DECODE, RSA_R_INVALID_PSS_PARAMETERS); |
67 | 0 | return 0; |
68 | 0 | } |
69 | 0 | rsa->pss = rsa_pss_decode(alg); |
70 | 0 | if (rsa->pss == NULL) |
71 | 0 | return 0; |
72 | 0 | return 1; |
73 | 0 | } |
74 | | |
75 | | static int rsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey) |
76 | 0 | { |
77 | 0 | unsigned char *penc = NULL; |
78 | 0 | int penclen; |
79 | 0 | ASN1_STRING *str; |
80 | 0 | int strtype; |
81 | |
|
82 | 0 | if (!rsa_param_encode(pkey, &str, &strtype)) |
83 | 0 | return 0; |
84 | 0 | penclen = i2d_RSAPublicKey(pkey->pkey.rsa, &penc); |
85 | 0 | if (penclen <= 0) |
86 | 0 | return 0; |
87 | 0 | if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(pkey->ameth->pkey_id), |
88 | 0 | strtype, str, penc, penclen)) |
89 | 0 | return 1; |
90 | | |
91 | 0 | OPENSSL_free(penc); |
92 | 0 | return 0; |
93 | 0 | } |
94 | | |
95 | | static int rsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey) |
96 | 0 | { |
97 | 0 | const unsigned char *p; |
98 | 0 | int pklen; |
99 | 0 | X509_ALGOR *alg; |
100 | 0 | RSA *rsa = NULL; |
101 | |
|
102 | 0 | if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &alg, pubkey)) |
103 | 0 | return 0; |
104 | 0 | if ((rsa = d2i_RSAPublicKey(NULL, &p, pklen)) == NULL) { |
105 | 0 | RSAerr(RSA_F_RSA_PUB_DECODE, ERR_R_RSA_LIB); |
106 | 0 | return 0; |
107 | 0 | } |
108 | 0 | if (!rsa_param_decode(rsa, alg)) { |
109 | 0 | RSA_free(rsa); |
110 | 0 | return 0; |
111 | 0 | } |
112 | 0 | if (!EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, rsa)) { |
113 | 0 | RSA_free(rsa); |
114 | 0 | return 0; |
115 | 0 | } |
116 | 0 | return 1; |
117 | 0 | } |
118 | | |
119 | | static int rsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) |
120 | 0 | { |
121 | | /* |
122 | | * Don't check the public/private key, this is mostly for smart |
123 | | * cards. |
124 | | */ |
125 | 0 | if (((RSA_flags(a->pkey.rsa) & RSA_METHOD_FLAG_NO_CHECK)) |
126 | 0 | || (RSA_flags(b->pkey.rsa) & RSA_METHOD_FLAG_NO_CHECK)) { |
127 | 0 | return 1; |
128 | 0 | } |
129 | | |
130 | 0 | if (BN_cmp(b->pkey.rsa->n, a->pkey.rsa->n) != 0 |
131 | 0 | || BN_cmp(b->pkey.rsa->e, a->pkey.rsa->e) != 0) |
132 | 0 | return 0; |
133 | 0 | return 1; |
134 | 0 | } |
135 | | |
136 | | static int old_rsa_priv_decode(EVP_PKEY *pkey, |
137 | | const unsigned char **pder, int derlen) |
138 | 0 | { |
139 | 0 | RSA *rsa; |
140 | |
|
141 | 0 | if ((rsa = d2i_RSAPrivateKey(NULL, pder, derlen)) == NULL) { |
142 | 0 | RSAerr(RSA_F_OLD_RSA_PRIV_DECODE, ERR_R_RSA_LIB); |
143 | 0 | return 0; |
144 | 0 | } |
145 | 0 | EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, rsa); |
146 | 0 | return 1; |
147 | 0 | } |
148 | | |
149 | | static int old_rsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder) |
150 | 0 | { |
151 | 0 | return i2d_RSAPrivateKey(pkey->pkey.rsa, pder); |
152 | 0 | } |
153 | | |
154 | | static int rsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey) |
155 | 0 | { |
156 | 0 | unsigned char *rk = NULL; |
157 | 0 | int rklen; |
158 | 0 | ASN1_STRING *str; |
159 | 0 | int strtype; |
160 | |
|
161 | 0 | if (!rsa_param_encode(pkey, &str, &strtype)) |
162 | 0 | return 0; |
163 | 0 | rklen = i2d_RSAPrivateKey(pkey->pkey.rsa, &rk); |
164 | |
|
165 | 0 | if (rklen <= 0) { |
166 | 0 | RSAerr(RSA_F_RSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE); |
167 | 0 | ASN1_STRING_free(str); |
168 | 0 | return 0; |
169 | 0 | } |
170 | | |
171 | 0 | if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(pkey->ameth->pkey_id), 0, |
172 | 0 | strtype, str, rk, rklen)) { |
173 | 0 | RSAerr(RSA_F_RSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE); |
174 | 0 | ASN1_STRING_free(str); |
175 | 0 | OPENSSL_clear_free(rk, rklen); |
176 | 0 | return 0; |
177 | 0 | } |
178 | | |
179 | 0 | return 1; |
180 | 0 | } |
181 | | |
182 | | static int rsa_priv_decode(EVP_PKEY *pkey, const PKCS8_PRIV_KEY_INFO *p8) |
183 | 0 | { |
184 | 0 | const unsigned char *p; |
185 | 0 | RSA *rsa; |
186 | 0 | int pklen; |
187 | 0 | const X509_ALGOR *alg; |
188 | |
|
189 | 0 | if (!PKCS8_pkey_get0(NULL, &p, &pklen, &alg, p8)) |
190 | 0 | return 0; |
191 | 0 | rsa = d2i_RSAPrivateKey(NULL, &p, pklen); |
192 | 0 | if (rsa == NULL) { |
193 | 0 | RSAerr(RSA_F_RSA_PRIV_DECODE, ERR_R_RSA_LIB); |
194 | 0 | return 0; |
195 | 0 | } |
196 | 0 | if (!rsa_param_decode(rsa, alg)) { |
197 | 0 | RSA_free(rsa); |
198 | 0 | return 0; |
199 | 0 | } |
200 | 0 | EVP_PKEY_assign(pkey, pkey->ameth->pkey_id, rsa); |
201 | 0 | return 1; |
202 | 0 | } |
203 | | |
204 | | static int int_rsa_size(const EVP_PKEY *pkey) |
205 | 0 | { |
206 | 0 | return RSA_size(pkey->pkey.rsa); |
207 | 0 | } |
208 | | |
209 | | static int rsa_bits(const EVP_PKEY *pkey) |
210 | 0 | { |
211 | 0 | return BN_num_bits(pkey->pkey.rsa->n); |
212 | 0 | } |
213 | | |
214 | | static int rsa_security_bits(const EVP_PKEY *pkey) |
215 | 0 | { |
216 | 0 | return RSA_security_bits(pkey->pkey.rsa); |
217 | 0 | } |
218 | | |
219 | | static void int_rsa_free(EVP_PKEY *pkey) |
220 | 0 | { |
221 | 0 | RSA_free(pkey->pkey.rsa); |
222 | 0 | } |
223 | | |
224 | | static X509_ALGOR *rsa_mgf1_decode(X509_ALGOR *alg) |
225 | 0 | { |
226 | 0 | if (OBJ_obj2nid(alg->algorithm) != NID_mgf1) |
227 | 0 | return NULL; |
228 | 0 | return ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(X509_ALGOR), |
229 | 0 | alg->parameter); |
230 | 0 | } |
231 | | |
232 | | static int rsa_pss_param_print(BIO *bp, int pss_key, RSA_PSS_PARAMS *pss, |
233 | | int indent) |
234 | 0 | { |
235 | 0 | int rv = 0; |
236 | 0 | X509_ALGOR *maskHash = NULL; |
237 | |
|
238 | 0 | if (!BIO_indent(bp, indent, 128)) |
239 | 0 | goto err; |
240 | 0 | if (pss_key) { |
241 | 0 | if (pss == NULL) { |
242 | 0 | if (BIO_puts(bp, "No PSS parameter restrictions\n") <= 0) |
243 | 0 | return 0; |
244 | 0 | return 1; |
245 | 0 | } else { |
246 | 0 | if (BIO_puts(bp, "PSS parameter restrictions:") <= 0) |
247 | 0 | return 0; |
248 | 0 | } |
249 | 0 | } else if (pss == NULL) { |
250 | 0 | if (BIO_puts(bp,"(INVALID PSS PARAMETERS)\n") <= 0) |
251 | 0 | return 0; |
252 | 0 | return 1; |
253 | 0 | } |
254 | 0 | if (BIO_puts(bp, "\n") <= 0) |
255 | 0 | goto err; |
256 | 0 | if (pss_key) |
257 | 0 | indent += 2; |
258 | 0 | if (!BIO_indent(bp, indent, 128)) |
259 | 0 | goto err; |
260 | 0 | if (BIO_puts(bp, "Hash Algorithm: ") <= 0) |
261 | 0 | goto err; |
262 | | |
263 | 0 | if (pss->hashAlgorithm) { |
264 | 0 | if (i2a_ASN1_OBJECT(bp, pss->hashAlgorithm->algorithm) <= 0) |
265 | 0 | goto err; |
266 | 0 | } else if (BIO_puts(bp, "sha1 (default)") <= 0) { |
267 | 0 | goto err; |
268 | 0 | } |
269 | | |
270 | 0 | if (BIO_puts(bp, "\n") <= 0) |
271 | 0 | goto err; |
272 | | |
273 | 0 | if (!BIO_indent(bp, indent, 128)) |
274 | 0 | goto err; |
275 | | |
276 | 0 | if (BIO_puts(bp, "Mask Algorithm: ") <= 0) |
277 | 0 | goto err; |
278 | 0 | if (pss->maskGenAlgorithm) { |
279 | 0 | if (i2a_ASN1_OBJECT(bp, pss->maskGenAlgorithm->algorithm) <= 0) |
280 | 0 | goto err; |
281 | 0 | if (BIO_puts(bp, " with ") <= 0) |
282 | 0 | goto err; |
283 | 0 | maskHash = rsa_mgf1_decode(pss->maskGenAlgorithm); |
284 | 0 | if (maskHash != NULL) { |
285 | 0 | if (i2a_ASN1_OBJECT(bp, maskHash->algorithm) <= 0) |
286 | 0 | goto err; |
287 | 0 | } else if (BIO_puts(bp, "INVALID") <= 0) { |
288 | 0 | goto err; |
289 | 0 | } |
290 | 0 | } else if (BIO_puts(bp, "mgf1 with sha1 (default)") <= 0) { |
291 | 0 | goto err; |
292 | 0 | } |
293 | 0 | BIO_puts(bp, "\n"); |
294 | |
|
295 | 0 | if (!BIO_indent(bp, indent, 128)) |
296 | 0 | goto err; |
297 | 0 | if (BIO_printf(bp, "%s Salt Length: 0x", pss_key ? "Minimum" : "") <= 0) |
298 | 0 | goto err; |
299 | 0 | if (pss->saltLength) { |
300 | 0 | if (i2a_ASN1_INTEGER(bp, pss->saltLength) <= 0) |
301 | 0 | goto err; |
302 | 0 | } else if (BIO_puts(bp, "14 (default)") <= 0) { |
303 | 0 | goto err; |
304 | 0 | } |
305 | 0 | BIO_puts(bp, "\n"); |
306 | |
|
307 | 0 | if (!BIO_indent(bp, indent, 128)) |
308 | 0 | goto err; |
309 | 0 | if (BIO_puts(bp, "Trailer Field: 0x") <= 0) |
310 | 0 | goto err; |
311 | 0 | if (pss->trailerField) { |
312 | 0 | if (i2a_ASN1_INTEGER(bp, pss->trailerField) <= 0) |
313 | 0 | goto err; |
314 | 0 | } else if (BIO_puts(bp, "BC (default)") <= 0) { |
315 | 0 | goto err; |
316 | 0 | } |
317 | 0 | BIO_puts(bp, "\n"); |
318 | |
|
319 | 0 | rv = 1; |
320 | |
|
321 | 0 | err: |
322 | 0 | X509_ALGOR_free(maskHash); |
323 | 0 | return rv; |
324 | |
|
325 | 0 | } |
326 | | |
327 | | static int pkey_rsa_print(BIO *bp, const EVP_PKEY *pkey, int off, int priv) |
328 | 0 | { |
329 | 0 | const RSA *x = pkey->pkey.rsa; |
330 | 0 | char *str; |
331 | 0 | const char *s; |
332 | 0 | int ret = 0, mod_len = 0, ex_primes; |
333 | |
|
334 | 0 | if (x->n != NULL) |
335 | 0 | mod_len = BN_num_bits(x->n); |
336 | 0 | ex_primes = sk_RSA_PRIME_INFO_num(x->prime_infos); |
337 | |
|
338 | 0 | if (!BIO_indent(bp, off, 128)) |
339 | 0 | goto err; |
340 | | |
341 | 0 | if (BIO_printf(bp, "%s ", pkey_is_pss(pkey) ? "RSA-PSS" : "RSA") <= 0) |
342 | 0 | goto err; |
343 | | |
344 | 0 | if (priv && x->d) { |
345 | 0 | if (BIO_printf(bp, "Private-Key: (%d bit, %d primes)\n", |
346 | 0 | mod_len, ex_primes <= 0 ? 2 : ex_primes + 2) <= 0) |
347 | 0 | goto err; |
348 | 0 | str = "modulus:"; |
349 | 0 | s = "publicExponent:"; |
350 | 0 | } else { |
351 | 0 | if (BIO_printf(bp, "Public-Key: (%d bit)\n", mod_len) <= 0) |
352 | 0 | goto err; |
353 | 0 | str = "Modulus:"; |
354 | 0 | s = "Exponent:"; |
355 | 0 | } |
356 | 0 | if (!ASN1_bn_print(bp, str, x->n, NULL, off)) |
357 | 0 | goto err; |
358 | 0 | if (!ASN1_bn_print(bp, s, x->e, NULL, off)) |
359 | 0 | goto err; |
360 | 0 | if (priv) { |
361 | 0 | int i; |
362 | |
|
363 | 0 | if (!ASN1_bn_print(bp, "privateExponent:", x->d, NULL, off)) |
364 | 0 | goto err; |
365 | 0 | if (!ASN1_bn_print(bp, "prime1:", x->p, NULL, off)) |
366 | 0 | goto err; |
367 | 0 | if (!ASN1_bn_print(bp, "prime2:", x->q, NULL, off)) |
368 | 0 | goto err; |
369 | 0 | if (!ASN1_bn_print(bp, "exponent1:", x->dmp1, NULL, off)) |
370 | 0 | goto err; |
371 | 0 | if (!ASN1_bn_print(bp, "exponent2:", x->dmq1, NULL, off)) |
372 | 0 | goto err; |
373 | 0 | if (!ASN1_bn_print(bp, "coefficient:", x->iqmp, NULL, off)) |
374 | 0 | goto err; |
375 | 0 | for (i = 0; i < sk_RSA_PRIME_INFO_num(x->prime_infos); i++) { |
376 | | /* print multi-prime info */ |
377 | 0 | BIGNUM *bn = NULL; |
378 | 0 | RSA_PRIME_INFO *pinfo; |
379 | 0 | int j; |
380 | |
|
381 | 0 | pinfo = sk_RSA_PRIME_INFO_value(x->prime_infos, i); |
382 | 0 | for (j = 0; j < 3; j++) { |
383 | 0 | if (!BIO_indent(bp, off, 128)) |
384 | 0 | goto err; |
385 | 0 | switch (j) { |
386 | 0 | case 0: |
387 | 0 | if (BIO_printf(bp, "prime%d:", i + 3) <= 0) |
388 | 0 | goto err; |
389 | 0 | bn = pinfo->r; |
390 | 0 | break; |
391 | 0 | case 1: |
392 | 0 | if (BIO_printf(bp, "exponent%d:", i + 3) <= 0) |
393 | 0 | goto err; |
394 | 0 | bn = pinfo->d; |
395 | 0 | break; |
396 | 0 | case 2: |
397 | 0 | if (BIO_printf(bp, "coefficient%d:", i + 3) <= 0) |
398 | 0 | goto err; |
399 | 0 | bn = pinfo->t; |
400 | 0 | break; |
401 | 0 | default: |
402 | 0 | break; |
403 | 0 | } |
404 | 0 | if (!ASN1_bn_print(bp, "", bn, NULL, off)) |
405 | 0 | goto err; |
406 | 0 | } |
407 | 0 | } |
408 | 0 | } |
409 | 0 | if (pkey_is_pss(pkey) && !rsa_pss_param_print(bp, 1, x->pss, off)) |
410 | 0 | goto err; |
411 | 0 | ret = 1; |
412 | 0 | err: |
413 | 0 | return ret; |
414 | 0 | } |
415 | | |
416 | | static int rsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent, |
417 | | ASN1_PCTX *ctx) |
418 | 0 | { |
419 | 0 | return pkey_rsa_print(bp, pkey, indent, 0); |
420 | 0 | } |
421 | | |
422 | | static int rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent, |
423 | | ASN1_PCTX *ctx) |
424 | 0 | { |
425 | 0 | return pkey_rsa_print(bp, pkey, indent, 1); |
426 | 0 | } |
427 | | |
428 | | static RSA_PSS_PARAMS *rsa_pss_decode(const X509_ALGOR *alg) |
429 | 0 | { |
430 | 0 | RSA_PSS_PARAMS *pss; |
431 | |
|
432 | 0 | pss = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(RSA_PSS_PARAMS), |
433 | 0 | alg->parameter); |
434 | |
|
435 | 0 | if (pss == NULL) |
436 | 0 | return NULL; |
437 | | |
438 | 0 | if (pss->maskGenAlgorithm != NULL) { |
439 | 0 | pss->maskHash = rsa_mgf1_decode(pss->maskGenAlgorithm); |
440 | 0 | if (pss->maskHash == NULL) { |
441 | 0 | RSA_PSS_PARAMS_free(pss); |
442 | 0 | return NULL; |
443 | 0 | } |
444 | 0 | } |
445 | | |
446 | 0 | return pss; |
447 | 0 | } |
448 | | |
449 | | static int rsa_sig_print(BIO *bp, const X509_ALGOR *sigalg, |
450 | | const ASN1_STRING *sig, int indent, ASN1_PCTX *pctx) |
451 | 0 | { |
452 | 0 | if (OBJ_obj2nid(sigalg->algorithm) == EVP_PKEY_RSA_PSS) { |
453 | 0 | int rv; |
454 | 0 | RSA_PSS_PARAMS *pss = rsa_pss_decode(sigalg); |
455 | |
|
456 | 0 | rv = rsa_pss_param_print(bp, 0, pss, indent); |
457 | 0 | RSA_PSS_PARAMS_free(pss); |
458 | 0 | if (!rv) |
459 | 0 | return 0; |
460 | 0 | } else if (!sig && BIO_puts(bp, "\n") <= 0) { |
461 | 0 | return 0; |
462 | 0 | } |
463 | 0 | if (sig) |
464 | 0 | return X509_signature_dump(bp, sig, indent); |
465 | 0 | return 1; |
466 | 0 | } |
467 | | |
468 | | static int rsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2) |
469 | 0 | { |
470 | 0 | X509_ALGOR *alg = NULL; |
471 | 0 | const EVP_MD *md; |
472 | 0 | const EVP_MD *mgf1md; |
473 | 0 | int min_saltlen; |
474 | |
|
475 | 0 | switch (op) { |
476 | | |
477 | 0 | case ASN1_PKEY_CTRL_PKCS7_SIGN: |
478 | 0 | if (arg1 == 0) |
479 | 0 | PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, NULL, &alg); |
480 | 0 | break; |
481 | | |
482 | 0 | case ASN1_PKEY_CTRL_PKCS7_ENCRYPT: |
483 | 0 | if (pkey_is_pss(pkey)) |
484 | 0 | return -2; |
485 | 0 | if (arg1 == 0) |
486 | 0 | PKCS7_RECIP_INFO_get0_alg(arg2, &alg); |
487 | 0 | break; |
488 | 0 | #ifndef OPENSSL_NO_CMS |
489 | 0 | case ASN1_PKEY_CTRL_CMS_SIGN: |
490 | 0 | if (arg1 == 0) |
491 | 0 | return rsa_cms_sign(arg2); |
492 | 0 | else if (arg1 == 1) |
493 | 0 | return rsa_cms_verify(arg2); |
494 | 0 | break; |
495 | | |
496 | 0 | case ASN1_PKEY_CTRL_CMS_ENVELOPE: |
497 | 0 | if (pkey_is_pss(pkey)) |
498 | 0 | return -2; |
499 | 0 | if (arg1 == 0) |
500 | 0 | return rsa_cms_encrypt(arg2); |
501 | 0 | else if (arg1 == 1) |
502 | 0 | return rsa_cms_decrypt(arg2); |
503 | 0 | break; |
504 | | |
505 | 0 | case ASN1_PKEY_CTRL_CMS_RI_TYPE: |
506 | 0 | if (pkey_is_pss(pkey)) |
507 | 0 | return -2; |
508 | 0 | *(int *)arg2 = CMS_RECIPINFO_TRANS; |
509 | 0 | return 1; |
510 | 0 | #endif |
511 | | |
512 | 0 | case ASN1_PKEY_CTRL_DEFAULT_MD_NID: |
513 | 0 | if (pkey->pkey.rsa->pss != NULL) { |
514 | 0 | if (!rsa_pss_get_param(pkey->pkey.rsa->pss, &md, &mgf1md, |
515 | 0 | &min_saltlen)) { |
516 | 0 | RSAerr(0, ERR_R_INTERNAL_ERROR); |
517 | 0 | return 0; |
518 | 0 | } |
519 | 0 | *(int *)arg2 = EVP_MD_type(md); |
520 | | /* Return of 2 indicates this MD is mandatory */ |
521 | 0 | return 2; |
522 | 0 | } |
523 | 0 | *(int *)arg2 = NID_sha256; |
524 | 0 | return 1; |
525 | | |
526 | 0 | default: |
527 | 0 | return -2; |
528 | |
|
529 | 0 | } |
530 | | |
531 | 0 | if (alg) |
532 | 0 | X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0); |
533 | |
|
534 | 0 | return 1; |
535 | |
|
536 | 0 | } |
537 | | |
538 | | /* allocate and set algorithm ID from EVP_MD, default SHA1 */ |
539 | | static int rsa_md_to_algor(X509_ALGOR **palg, const EVP_MD *md) |
540 | 0 | { |
541 | 0 | if (md == NULL || EVP_MD_type(md) == NID_sha1) |
542 | 0 | return 1; |
543 | 0 | *palg = X509_ALGOR_new(); |
544 | 0 | if (*palg == NULL) |
545 | 0 | return 0; |
546 | 0 | X509_ALGOR_set_md(*palg, md); |
547 | 0 | return 1; |
548 | 0 | } |
549 | | |
550 | | /* Allocate and set MGF1 algorithm ID from EVP_MD */ |
551 | | static int rsa_md_to_mgf1(X509_ALGOR **palg, const EVP_MD *mgf1md) |
552 | 0 | { |
553 | 0 | X509_ALGOR *algtmp = NULL; |
554 | 0 | ASN1_STRING *stmp = NULL; |
555 | |
|
556 | 0 | *palg = NULL; |
557 | 0 | if (mgf1md == NULL || EVP_MD_type(mgf1md) == NID_sha1) |
558 | 0 | return 1; |
559 | | /* need to embed algorithm ID inside another */ |
560 | 0 | if (!rsa_md_to_algor(&algtmp, mgf1md)) |
561 | 0 | goto err; |
562 | 0 | if (ASN1_item_pack(algtmp, ASN1_ITEM_rptr(X509_ALGOR), &stmp) == NULL) |
563 | 0 | goto err; |
564 | 0 | *palg = X509_ALGOR_new(); |
565 | 0 | if (*palg == NULL) |
566 | 0 | goto err; |
567 | 0 | X509_ALGOR_set0(*palg, OBJ_nid2obj(NID_mgf1), V_ASN1_SEQUENCE, stmp); |
568 | 0 | stmp = NULL; |
569 | 0 | err: |
570 | 0 | ASN1_STRING_free(stmp); |
571 | 0 | X509_ALGOR_free(algtmp); |
572 | 0 | if (*palg) |
573 | 0 | return 1; |
574 | 0 | return 0; |
575 | 0 | } |
576 | | |
577 | | /* convert algorithm ID to EVP_MD, default SHA1 */ |
578 | | static const EVP_MD *rsa_algor_to_md(X509_ALGOR *alg) |
579 | 0 | { |
580 | 0 | const EVP_MD *md; |
581 | |
|
582 | 0 | if (!alg) |
583 | 0 | return EVP_sha1(); |
584 | 0 | md = EVP_get_digestbyobj(alg->algorithm); |
585 | 0 | if (md == NULL) |
586 | 0 | RSAerr(RSA_F_RSA_ALGOR_TO_MD, RSA_R_UNKNOWN_DIGEST); |
587 | 0 | return md; |
588 | 0 | } |
589 | | |
590 | | /* |
591 | | * Convert EVP_PKEY_CTX in PSS mode into corresponding algorithm parameter, |
592 | | * suitable for setting an AlgorithmIdentifier. |
593 | | */ |
594 | | |
595 | | static RSA_PSS_PARAMS *rsa_ctx_to_pss(EVP_PKEY_CTX *pkctx) |
596 | 0 | { |
597 | 0 | const EVP_MD *sigmd, *mgf1md; |
598 | 0 | EVP_PKEY *pk = EVP_PKEY_CTX_get0_pkey(pkctx); |
599 | 0 | int saltlen; |
600 | |
|
601 | 0 | if (EVP_PKEY_CTX_get_signature_md(pkctx, &sigmd) <= 0) |
602 | 0 | return NULL; |
603 | 0 | if (EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) <= 0) |
604 | 0 | return NULL; |
605 | 0 | if (!EVP_PKEY_CTX_get_rsa_pss_saltlen(pkctx, &saltlen)) |
606 | 0 | return NULL; |
607 | 0 | if (saltlen == -1) { |
608 | 0 | saltlen = EVP_MD_size(sigmd); |
609 | 0 | } else if (saltlen == -2 || saltlen == -3) { |
610 | 0 | saltlen = EVP_PKEY_size(pk) - EVP_MD_size(sigmd) - 2; |
611 | 0 | if ((EVP_PKEY_bits(pk) & 0x7) == 1) |
612 | 0 | saltlen--; |
613 | 0 | if (saltlen < 0) |
614 | 0 | return NULL; |
615 | 0 | } |
616 | | |
617 | 0 | return rsa_pss_params_create(sigmd, mgf1md, saltlen); |
618 | 0 | } |
619 | | |
620 | | RSA_PSS_PARAMS *rsa_pss_params_create(const EVP_MD *sigmd, |
621 | | const EVP_MD *mgf1md, int saltlen) |
622 | 0 | { |
623 | 0 | RSA_PSS_PARAMS *pss = RSA_PSS_PARAMS_new(); |
624 | |
|
625 | 0 | if (pss == NULL) |
626 | 0 | goto err; |
627 | 0 | if (saltlen != 20) { |
628 | 0 | pss->saltLength = ASN1_INTEGER_new(); |
629 | 0 | if (pss->saltLength == NULL) |
630 | 0 | goto err; |
631 | 0 | if (!ASN1_INTEGER_set(pss->saltLength, saltlen)) |
632 | 0 | goto err; |
633 | 0 | } |
634 | 0 | if (!rsa_md_to_algor(&pss->hashAlgorithm, sigmd)) |
635 | 0 | goto err; |
636 | 0 | if (mgf1md == NULL) |
637 | 0 | mgf1md = sigmd; |
638 | 0 | if (!rsa_md_to_mgf1(&pss->maskGenAlgorithm, mgf1md)) |
639 | 0 | goto err; |
640 | 0 | if (!rsa_md_to_algor(&pss->maskHash, mgf1md)) |
641 | 0 | goto err; |
642 | 0 | return pss; |
643 | 0 | err: |
644 | 0 | RSA_PSS_PARAMS_free(pss); |
645 | 0 | return NULL; |
646 | 0 | } |
647 | | |
648 | | static ASN1_STRING *rsa_ctx_to_pss_string(EVP_PKEY_CTX *pkctx) |
649 | 0 | { |
650 | 0 | RSA_PSS_PARAMS *pss = rsa_ctx_to_pss(pkctx); |
651 | 0 | ASN1_STRING *os; |
652 | |
|
653 | 0 | if (pss == NULL) |
654 | 0 | return NULL; |
655 | | |
656 | 0 | os = ASN1_item_pack(pss, ASN1_ITEM_rptr(RSA_PSS_PARAMS), NULL); |
657 | 0 | RSA_PSS_PARAMS_free(pss); |
658 | 0 | return os; |
659 | 0 | } |
660 | | |
661 | | /* |
662 | | * From PSS AlgorithmIdentifier set public key parameters. If pkey isn't NULL |
663 | | * then the EVP_MD_CTX is setup and initialised. If it is NULL parameters are |
664 | | * passed to pkctx instead. |
665 | | */ |
666 | | |
667 | | static int rsa_pss_to_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pkctx, |
668 | | X509_ALGOR *sigalg, EVP_PKEY *pkey) |
669 | 0 | { |
670 | 0 | int rv = -1; |
671 | 0 | int saltlen; |
672 | 0 | const EVP_MD *mgf1md = NULL, *md = NULL; |
673 | 0 | RSA_PSS_PARAMS *pss; |
674 | | |
675 | | /* Sanity check: make sure it is PSS */ |
676 | 0 | if (OBJ_obj2nid(sigalg->algorithm) != EVP_PKEY_RSA_PSS) { |
677 | 0 | RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_UNSUPPORTED_SIGNATURE_TYPE); |
678 | 0 | return -1; |
679 | 0 | } |
680 | | /* Decode PSS parameters */ |
681 | 0 | pss = rsa_pss_decode(sigalg); |
682 | |
|
683 | 0 | if (!rsa_pss_get_param(pss, &md, &mgf1md, &saltlen)) { |
684 | 0 | RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_INVALID_PSS_PARAMETERS); |
685 | 0 | goto err; |
686 | 0 | } |
687 | | |
688 | | /* We have all parameters now set up context */ |
689 | 0 | if (pkey) { |
690 | 0 | if (!EVP_DigestVerifyInit(ctx, &pkctx, md, NULL, pkey)) |
691 | 0 | goto err; |
692 | 0 | } else { |
693 | 0 | const EVP_MD *checkmd; |
694 | 0 | if (EVP_PKEY_CTX_get_signature_md(pkctx, &checkmd) <= 0) |
695 | 0 | goto err; |
696 | 0 | if (EVP_MD_type(md) != EVP_MD_type(checkmd)) { |
697 | 0 | RSAerr(RSA_F_RSA_PSS_TO_CTX, RSA_R_DIGEST_DOES_NOT_MATCH); |
698 | 0 | goto err; |
699 | 0 | } |
700 | 0 | } |
701 | | |
702 | 0 | if (EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_PSS_PADDING) <= 0) |
703 | 0 | goto err; |
704 | | |
705 | 0 | if (EVP_PKEY_CTX_set_rsa_pss_saltlen(pkctx, saltlen) <= 0) |
706 | 0 | goto err; |
707 | | |
708 | 0 | if (EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md) <= 0) |
709 | 0 | goto err; |
710 | | /* Carry on */ |
711 | 0 | rv = 1; |
712 | |
|
713 | 0 | err: |
714 | 0 | RSA_PSS_PARAMS_free(pss); |
715 | 0 | return rv; |
716 | 0 | } |
717 | | |
718 | | int rsa_pss_get_param(const RSA_PSS_PARAMS *pss, const EVP_MD **pmd, |
719 | | const EVP_MD **pmgf1md, int *psaltlen) |
720 | 0 | { |
721 | 0 | if (pss == NULL) |
722 | 0 | return 0; |
723 | 0 | *pmd = rsa_algor_to_md(pss->hashAlgorithm); |
724 | 0 | if (*pmd == NULL) |
725 | 0 | return 0; |
726 | 0 | *pmgf1md = rsa_algor_to_md(pss->maskHash); |
727 | 0 | if (*pmgf1md == NULL) |
728 | 0 | return 0; |
729 | 0 | if (pss->saltLength) { |
730 | 0 | *psaltlen = ASN1_INTEGER_get(pss->saltLength); |
731 | 0 | if (*psaltlen < 0) { |
732 | 0 | RSAerr(RSA_F_RSA_PSS_GET_PARAM, RSA_R_INVALID_SALT_LENGTH); |
733 | 0 | return 0; |
734 | 0 | } |
735 | 0 | } else { |
736 | 0 | *psaltlen = 20; |
737 | 0 | } |
738 | | |
739 | | /* |
740 | | * low-level routines support only trailer field 0xbc (value 1) and |
741 | | * PKCS#1 says we should reject any other value anyway. |
742 | | */ |
743 | 0 | if (pss->trailerField && ASN1_INTEGER_get(pss->trailerField) != 1) { |
744 | 0 | RSAerr(RSA_F_RSA_PSS_GET_PARAM, RSA_R_INVALID_TRAILER); |
745 | 0 | return 0; |
746 | 0 | } |
747 | | |
748 | 0 | return 1; |
749 | 0 | } |
750 | | |
751 | | #ifndef OPENSSL_NO_CMS |
752 | | static int rsa_cms_verify(CMS_SignerInfo *si) |
753 | 0 | { |
754 | 0 | int nid, nid2; |
755 | 0 | X509_ALGOR *alg; |
756 | 0 | EVP_PKEY_CTX *pkctx = CMS_SignerInfo_get0_pkey_ctx(si); |
757 | |
|
758 | 0 | CMS_SignerInfo_get0_algs(si, NULL, NULL, NULL, &alg); |
759 | 0 | nid = OBJ_obj2nid(alg->algorithm); |
760 | 0 | if (nid == EVP_PKEY_RSA_PSS) |
761 | 0 | return rsa_pss_to_ctx(NULL, pkctx, alg, NULL); |
762 | | /* Only PSS allowed for PSS keys */ |
763 | 0 | if (pkey_ctx_is_pss(pkctx)) { |
764 | 0 | RSAerr(RSA_F_RSA_CMS_VERIFY, RSA_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE); |
765 | 0 | return 0; |
766 | 0 | } |
767 | 0 | if (nid == NID_rsaEncryption) |
768 | 0 | return 1; |
769 | | /* Workaround for some implementation that use a signature OID */ |
770 | 0 | if (OBJ_find_sigid_algs(nid, NULL, &nid2)) { |
771 | 0 | if (nid2 == NID_rsaEncryption) |
772 | 0 | return 1; |
773 | 0 | } |
774 | 0 | return 0; |
775 | 0 | } |
776 | | #endif |
777 | | |
778 | | /* |
779 | | * Customised RSA item verification routine. This is called when a signature |
780 | | * is encountered requiring special handling. We currently only handle PSS. |
781 | | */ |
782 | | |
783 | | static int rsa_item_verify(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn, |
784 | | X509_ALGOR *sigalg, ASN1_BIT_STRING *sig, |
785 | | EVP_PKEY *pkey) |
786 | 0 | { |
787 | | /* Sanity check: make sure it is PSS */ |
788 | 0 | if (OBJ_obj2nid(sigalg->algorithm) != EVP_PKEY_RSA_PSS) { |
789 | 0 | RSAerr(RSA_F_RSA_ITEM_VERIFY, RSA_R_UNSUPPORTED_SIGNATURE_TYPE); |
790 | 0 | return -1; |
791 | 0 | } |
792 | 0 | if (rsa_pss_to_ctx(ctx, NULL, sigalg, pkey) > 0) { |
793 | | /* Carry on */ |
794 | 0 | return 2; |
795 | 0 | } |
796 | 0 | return -1; |
797 | 0 | } |
798 | | |
799 | | #ifndef OPENSSL_NO_CMS |
800 | | static int rsa_cms_sign(CMS_SignerInfo *si) |
801 | 0 | { |
802 | 0 | int pad_mode = RSA_PKCS1_PADDING; |
803 | 0 | X509_ALGOR *alg; |
804 | 0 | EVP_PKEY_CTX *pkctx = CMS_SignerInfo_get0_pkey_ctx(si); |
805 | 0 | ASN1_STRING *os = NULL; |
806 | |
|
807 | 0 | CMS_SignerInfo_get0_algs(si, NULL, NULL, NULL, &alg); |
808 | 0 | if (pkctx) { |
809 | 0 | if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0) |
810 | 0 | return 0; |
811 | 0 | } |
812 | 0 | if (pad_mode == RSA_PKCS1_PADDING) { |
813 | 0 | X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0); |
814 | 0 | return 1; |
815 | 0 | } |
816 | | /* We don't support it */ |
817 | 0 | if (pad_mode != RSA_PKCS1_PSS_PADDING) |
818 | 0 | return 0; |
819 | 0 | os = rsa_ctx_to_pss_string(pkctx); |
820 | 0 | if (!os) |
821 | 0 | return 0; |
822 | 0 | X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_PKEY_RSA_PSS), V_ASN1_SEQUENCE, os); |
823 | 0 | return 1; |
824 | 0 | } |
825 | | #endif |
826 | | |
827 | | static int rsa_item_sign(EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn, |
828 | | X509_ALGOR *alg1, X509_ALGOR *alg2, |
829 | | ASN1_BIT_STRING *sig) |
830 | 0 | { |
831 | 0 | int pad_mode; |
832 | 0 | EVP_PKEY_CTX *pkctx = EVP_MD_CTX_pkey_ctx(ctx); |
833 | |
|
834 | 0 | if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0) |
835 | 0 | return 0; |
836 | 0 | if (pad_mode == RSA_PKCS1_PADDING) |
837 | 0 | return 2; |
838 | 0 | if (pad_mode == RSA_PKCS1_PSS_PADDING) { |
839 | 0 | ASN1_STRING *os1 = NULL; |
840 | 0 | os1 = rsa_ctx_to_pss_string(pkctx); |
841 | 0 | if (!os1) |
842 | 0 | return 0; |
843 | | /* Duplicate parameters if we have to */ |
844 | 0 | if (alg2) { |
845 | 0 | ASN1_STRING *os2 = ASN1_STRING_dup(os1); |
846 | 0 | if (!os2) { |
847 | 0 | ASN1_STRING_free(os1); |
848 | 0 | return 0; |
849 | 0 | } |
850 | 0 | X509_ALGOR_set0(alg2, OBJ_nid2obj(EVP_PKEY_RSA_PSS), |
851 | 0 | V_ASN1_SEQUENCE, os2); |
852 | 0 | } |
853 | 0 | X509_ALGOR_set0(alg1, OBJ_nid2obj(EVP_PKEY_RSA_PSS), |
854 | 0 | V_ASN1_SEQUENCE, os1); |
855 | 0 | return 3; |
856 | 0 | } |
857 | 0 | return 2; |
858 | 0 | } |
859 | | |
860 | | static int rsa_sig_info_set(X509_SIG_INFO *siginf, const X509_ALGOR *sigalg, |
861 | | const ASN1_STRING *sig) |
862 | 0 | { |
863 | 0 | int rv = 0; |
864 | 0 | int mdnid, saltlen; |
865 | 0 | uint32_t flags; |
866 | 0 | const EVP_MD *mgf1md = NULL, *md = NULL; |
867 | 0 | RSA_PSS_PARAMS *pss; |
868 | | |
869 | | /* Sanity check: make sure it is PSS */ |
870 | 0 | if (OBJ_obj2nid(sigalg->algorithm) != EVP_PKEY_RSA_PSS) |
871 | 0 | return 0; |
872 | | /* Decode PSS parameters */ |
873 | 0 | pss = rsa_pss_decode(sigalg); |
874 | 0 | if (!rsa_pss_get_param(pss, &md, &mgf1md, &saltlen)) |
875 | 0 | goto err; |
876 | 0 | mdnid = EVP_MD_type(md); |
877 | | /* |
878 | | * For TLS need SHA256, SHA384 or SHA512, digest and MGF1 digest must |
879 | | * match and salt length must equal digest size |
880 | | */ |
881 | 0 | if ((mdnid == NID_sha256 || mdnid == NID_sha384 || mdnid == NID_sha512) |
882 | 0 | && mdnid == EVP_MD_type(mgf1md) && saltlen == EVP_MD_size(md)) |
883 | 0 | flags = X509_SIG_INFO_TLS; |
884 | 0 | else |
885 | 0 | flags = 0; |
886 | | /* Note: security bits half number of digest bits */ |
887 | 0 | X509_SIG_INFO_set(siginf, mdnid, EVP_PKEY_RSA_PSS, EVP_MD_size(md) * 4, |
888 | 0 | flags); |
889 | 0 | rv = 1; |
890 | 0 | err: |
891 | 0 | RSA_PSS_PARAMS_free(pss); |
892 | 0 | return rv; |
893 | 0 | } |
894 | | |
895 | | #ifndef OPENSSL_NO_CMS |
896 | | static RSA_OAEP_PARAMS *rsa_oaep_decode(const X509_ALGOR *alg) |
897 | 0 | { |
898 | 0 | RSA_OAEP_PARAMS *oaep; |
899 | |
|
900 | 0 | oaep = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(RSA_OAEP_PARAMS), |
901 | 0 | alg->parameter); |
902 | |
|
903 | 0 | if (oaep == NULL) |
904 | 0 | return NULL; |
905 | | |
906 | 0 | if (oaep->maskGenFunc != NULL) { |
907 | 0 | oaep->maskHash = rsa_mgf1_decode(oaep->maskGenFunc); |
908 | 0 | if (oaep->maskHash == NULL) { |
909 | 0 | RSA_OAEP_PARAMS_free(oaep); |
910 | 0 | return NULL; |
911 | 0 | } |
912 | 0 | } |
913 | 0 | return oaep; |
914 | 0 | } |
915 | | |
916 | | static int rsa_cms_decrypt(CMS_RecipientInfo *ri) |
917 | 0 | { |
918 | 0 | EVP_PKEY_CTX *pkctx; |
919 | 0 | X509_ALGOR *cmsalg; |
920 | 0 | int nid; |
921 | 0 | int rv = -1; |
922 | 0 | unsigned char *label = NULL; |
923 | 0 | int labellen = 0; |
924 | 0 | const EVP_MD *mgf1md = NULL, *md = NULL; |
925 | 0 | RSA_OAEP_PARAMS *oaep; |
926 | |
|
927 | 0 | pkctx = CMS_RecipientInfo_get0_pkey_ctx(ri); |
928 | 0 | if (pkctx == NULL) |
929 | 0 | return 0; |
930 | 0 | if (!CMS_RecipientInfo_ktri_get0_algs(ri, NULL, NULL, &cmsalg)) |
931 | 0 | return -1; |
932 | 0 | nid = OBJ_obj2nid(cmsalg->algorithm); |
933 | 0 | if (nid == NID_rsaEncryption) |
934 | 0 | return 1; |
935 | 0 | if (nid != NID_rsaesOaep) { |
936 | 0 | RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_UNSUPPORTED_ENCRYPTION_TYPE); |
937 | 0 | return -1; |
938 | 0 | } |
939 | | /* Decode OAEP parameters */ |
940 | 0 | oaep = rsa_oaep_decode(cmsalg); |
941 | |
|
942 | 0 | if (oaep == NULL) { |
943 | 0 | RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_INVALID_OAEP_PARAMETERS); |
944 | 0 | goto err; |
945 | 0 | } |
946 | | |
947 | 0 | mgf1md = rsa_algor_to_md(oaep->maskHash); |
948 | 0 | if (mgf1md == NULL) |
949 | 0 | goto err; |
950 | 0 | md = rsa_algor_to_md(oaep->hashFunc); |
951 | 0 | if (md == NULL) |
952 | 0 | goto err; |
953 | | |
954 | 0 | if (oaep->pSourceFunc != NULL) { |
955 | 0 | X509_ALGOR *plab = oaep->pSourceFunc; |
956 | |
|
957 | 0 | if (OBJ_obj2nid(plab->algorithm) != NID_pSpecified) { |
958 | 0 | RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_UNSUPPORTED_LABEL_SOURCE); |
959 | 0 | goto err; |
960 | 0 | } |
961 | 0 | if (plab->parameter->type != V_ASN1_OCTET_STRING) { |
962 | 0 | RSAerr(RSA_F_RSA_CMS_DECRYPT, RSA_R_INVALID_LABEL); |
963 | 0 | goto err; |
964 | 0 | } |
965 | | |
966 | 0 | label = plab->parameter->value.octet_string->data; |
967 | | /* Stop label being freed when OAEP parameters are freed */ |
968 | 0 | plab->parameter->value.octet_string->data = NULL; |
969 | 0 | labellen = plab->parameter->value.octet_string->length; |
970 | 0 | } |
971 | | |
972 | 0 | if (EVP_PKEY_CTX_set_rsa_padding(pkctx, RSA_PKCS1_OAEP_PADDING) <= 0) |
973 | 0 | goto err; |
974 | 0 | if (EVP_PKEY_CTX_set_rsa_oaep_md(pkctx, md) <= 0) |
975 | 0 | goto err; |
976 | 0 | if (EVP_PKEY_CTX_set_rsa_mgf1_md(pkctx, mgf1md) <= 0) |
977 | 0 | goto err; |
978 | 0 | if (EVP_PKEY_CTX_set0_rsa_oaep_label(pkctx, label, labellen) <= 0) |
979 | 0 | goto err; |
980 | | /* Carry on */ |
981 | 0 | rv = 1; |
982 | |
|
983 | 0 | err: |
984 | 0 | RSA_OAEP_PARAMS_free(oaep); |
985 | 0 | return rv; |
986 | 0 | } |
987 | | |
988 | | static int rsa_cms_encrypt(CMS_RecipientInfo *ri) |
989 | 0 | { |
990 | 0 | const EVP_MD *md, *mgf1md; |
991 | 0 | RSA_OAEP_PARAMS *oaep = NULL; |
992 | 0 | ASN1_STRING *os = NULL; |
993 | 0 | X509_ALGOR *alg; |
994 | 0 | EVP_PKEY_CTX *pkctx = CMS_RecipientInfo_get0_pkey_ctx(ri); |
995 | 0 | int pad_mode = RSA_PKCS1_PADDING, rv = 0, labellen; |
996 | 0 | unsigned char *label; |
997 | |
|
998 | 0 | if (CMS_RecipientInfo_ktri_get0_algs(ri, NULL, NULL, &alg) <= 0) |
999 | 0 | return 0; |
1000 | 0 | if (pkctx) { |
1001 | 0 | if (EVP_PKEY_CTX_get_rsa_padding(pkctx, &pad_mode) <= 0) |
1002 | 0 | return 0; |
1003 | 0 | } |
1004 | 0 | if (pad_mode == RSA_PKCS1_PADDING) { |
1005 | 0 | X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0); |
1006 | 0 | return 1; |
1007 | 0 | } |
1008 | | /* Not supported */ |
1009 | 0 | if (pad_mode != RSA_PKCS1_OAEP_PADDING) |
1010 | 0 | return 0; |
1011 | 0 | if (EVP_PKEY_CTX_get_rsa_oaep_md(pkctx, &md) <= 0) |
1012 | 0 | goto err; |
1013 | 0 | if (EVP_PKEY_CTX_get_rsa_mgf1_md(pkctx, &mgf1md) <= 0) |
1014 | 0 | goto err; |
1015 | 0 | labellen = EVP_PKEY_CTX_get0_rsa_oaep_label(pkctx, &label); |
1016 | 0 | if (labellen < 0) |
1017 | 0 | goto err; |
1018 | 0 | oaep = RSA_OAEP_PARAMS_new(); |
1019 | 0 | if (oaep == NULL) |
1020 | 0 | goto err; |
1021 | 0 | if (!rsa_md_to_algor(&oaep->hashFunc, md)) |
1022 | 0 | goto err; |
1023 | 0 | if (!rsa_md_to_mgf1(&oaep->maskGenFunc, mgf1md)) |
1024 | 0 | goto err; |
1025 | 0 | if (labellen > 0) { |
1026 | 0 | ASN1_OCTET_STRING *los; |
1027 | 0 | oaep->pSourceFunc = X509_ALGOR_new(); |
1028 | 0 | if (oaep->pSourceFunc == NULL) |
1029 | 0 | goto err; |
1030 | 0 | los = ASN1_OCTET_STRING_new(); |
1031 | 0 | if (los == NULL) |
1032 | 0 | goto err; |
1033 | 0 | if (!ASN1_OCTET_STRING_set(los, label, labellen)) { |
1034 | 0 | ASN1_OCTET_STRING_free(los); |
1035 | 0 | goto err; |
1036 | 0 | } |
1037 | 0 | X509_ALGOR_set0(oaep->pSourceFunc, OBJ_nid2obj(NID_pSpecified), |
1038 | 0 | V_ASN1_OCTET_STRING, los); |
1039 | 0 | } |
1040 | | /* create string with pss parameter encoding. */ |
1041 | 0 | if (!ASN1_item_pack(oaep, ASN1_ITEM_rptr(RSA_OAEP_PARAMS), &os)) |
1042 | 0 | goto err; |
1043 | 0 | X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaesOaep), V_ASN1_SEQUENCE, os); |
1044 | 0 | os = NULL; |
1045 | 0 | rv = 1; |
1046 | 0 | err: |
1047 | 0 | RSA_OAEP_PARAMS_free(oaep); |
1048 | 0 | ASN1_STRING_free(os); |
1049 | 0 | return rv; |
1050 | 0 | } |
1051 | | #endif |
1052 | | |
1053 | | static int rsa_pkey_check(const EVP_PKEY *pkey) |
1054 | 0 | { |
1055 | 0 | return RSA_check_key_ex(pkey->pkey.rsa, NULL); |
1056 | 0 | } |
1057 | | |
1058 | | const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[2] = { |
1059 | | { |
1060 | | EVP_PKEY_RSA, |
1061 | | EVP_PKEY_RSA, |
1062 | | ASN1_PKEY_SIGPARAM_NULL, |
1063 | | |
1064 | | "RSA", |
1065 | | "OpenSSL RSA method", |
1066 | | |
1067 | | rsa_pub_decode, |
1068 | | rsa_pub_encode, |
1069 | | rsa_pub_cmp, |
1070 | | rsa_pub_print, |
1071 | | |
1072 | | rsa_priv_decode, |
1073 | | rsa_priv_encode, |
1074 | | rsa_priv_print, |
1075 | | |
1076 | | int_rsa_size, |
1077 | | rsa_bits, |
1078 | | rsa_security_bits, |
1079 | | |
1080 | | 0, 0, 0, 0, 0, 0, |
1081 | | |
1082 | | rsa_sig_print, |
1083 | | int_rsa_free, |
1084 | | rsa_pkey_ctrl, |
1085 | | old_rsa_priv_decode, |
1086 | | old_rsa_priv_encode, |
1087 | | rsa_item_verify, |
1088 | | rsa_item_sign, |
1089 | | rsa_sig_info_set, |
1090 | | rsa_pkey_check |
1091 | | }, |
1092 | | |
1093 | | { |
1094 | | EVP_PKEY_RSA2, |
1095 | | EVP_PKEY_RSA, |
1096 | | ASN1_PKEY_ALIAS} |
1097 | | }; |
1098 | | |
1099 | | const EVP_PKEY_ASN1_METHOD rsa_pss_asn1_meth = { |
1100 | | EVP_PKEY_RSA_PSS, |
1101 | | EVP_PKEY_RSA_PSS, |
1102 | | ASN1_PKEY_SIGPARAM_NULL, |
1103 | | |
1104 | | "RSA-PSS", |
1105 | | "OpenSSL RSA-PSS method", |
1106 | | |
1107 | | rsa_pub_decode, |
1108 | | rsa_pub_encode, |
1109 | | rsa_pub_cmp, |
1110 | | rsa_pub_print, |
1111 | | |
1112 | | rsa_priv_decode, |
1113 | | rsa_priv_encode, |
1114 | | rsa_priv_print, |
1115 | | |
1116 | | int_rsa_size, |
1117 | | rsa_bits, |
1118 | | rsa_security_bits, |
1119 | | |
1120 | | 0, 0, 0, 0, 0, 0, |
1121 | | |
1122 | | rsa_sig_print, |
1123 | | int_rsa_free, |
1124 | | rsa_pkey_ctrl, |
1125 | | 0, 0, |
1126 | | rsa_item_verify, |
1127 | | rsa_item_sign, |
1128 | | 0, |
1129 | | rsa_pkey_check |
1130 | | }; |