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09b88a4a | 1 | /* crypto/rsa/rsa_pmeth.c */ |
0f113f3e MC |
2 | /* |
3 | * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project | |
4 | * 2006. | |
0b6f3c66 DSH |
5 | */ |
6 | /* ==================================================================== | |
7 | * Copyright (c) 2006 The OpenSSL Project. All rights reserved. | |
8 | * | |
9 | * Redistribution and use in source and binary forms, with or without | |
10 | * modification, are permitted provided that the following conditions | |
11 | * are met: | |
12 | * | |
13 | * 1. Redistributions of source code must retain the above copyright | |
0f113f3e | 14 | * notice, this list of conditions and the following disclaimer. |
0b6f3c66 DSH |
15 | * |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in | |
18 | * the documentation and/or other materials provided with the | |
19 | * distribution. | |
20 | * | |
21 | * 3. All advertising materials mentioning features or use of this | |
22 | * software must display the following acknowledgment: | |
23 | * "This product includes software developed by the OpenSSL Project | |
24 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
25 | * | |
26 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
27 | * endorse or promote products derived from this software without | |
28 | * prior written permission. For written permission, please contact | |
29 | * licensing@OpenSSL.org. | |
30 | * | |
31 | * 5. Products derived from this software may not be called "OpenSSL" | |
32 | * nor may "OpenSSL" appear in their names without prior written | |
33 | * permission of the OpenSSL Project. | |
34 | * | |
35 | * 6. Redistributions of any form whatsoever must retain the following | |
36 | * acknowledgment: | |
37 | * "This product includes software developed by the OpenSSL Project | |
38 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
39 | * | |
40 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
41 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
43 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
44 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
45 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
46 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
47 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
49 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
50 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
51 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
52 | * ==================================================================== | |
53 | * | |
54 | * This product includes cryptographic software written by Eric Young | |
55 | * (eay@cryptsoft.com). This product includes software written by Tim | |
56 | * Hudson (tjh@cryptsoft.com). | |
57 | * | |
58 | */ | |
59 | ||
60 | #include <stdio.h> | |
b39fc560 | 61 | #include "internal/cryptlib.h" |
0b6f3c66 DSH |
62 | #include <openssl/asn1t.h> |
63 | #include <openssl/x509.h> | |
64 | #include <openssl/rsa.h> | |
1e26a8ba | 65 | #include <openssl/bn.h> |
b2a97be7 | 66 | #include <openssl/evp.h> |
271fef0e | 67 | #include <openssl/x509v3.h> |
b3339050 | 68 | #ifndef OPENSSL_NO_CMS |
0f113f3e | 69 | # include <openssl/cms.h> |
b3339050 | 70 | #endif |
27af42f9 | 71 | #include "internal/evp_int.h" |
777c47ac | 72 | #include "rsa_locl.h" |
b2a97be7 | 73 | |
07e970c7 DSH |
74 | /* RSA pkey context structure */ |
75 | ||
0f113f3e MC |
76 | typedef struct { |
77 | /* Key gen parameters */ | |
78 | int nbits; | |
79 | BIGNUM *pub_exp; | |
80 | /* Keygen callback info */ | |
81 | int gentmp[2]; | |
82 | /* RSA padding mode */ | |
83 | int pad_mode; | |
84 | /* message digest */ | |
85 | const EVP_MD *md; | |
86 | /* message digest for MGF1 */ | |
87 | const EVP_MD *mgf1md; | |
88 | /* PSS salt length */ | |
89 | int saltlen; | |
90 | /* Temp buffer */ | |
91 | unsigned char *tbuf; | |
92 | /* OAEP label */ | |
93 | unsigned char *oaep_label; | |
94 | size_t oaep_labellen; | |
95 | } RSA_PKEY_CTX; | |
07e970c7 DSH |
96 | |
97 | static int pkey_rsa_init(EVP_PKEY_CTX *ctx) | |
0f113f3e MC |
98 | { |
99 | RSA_PKEY_CTX *rctx; | |
64b25758 | 100 | rctx = OPENSSL_zalloc(sizeof(*rctx)); |
90945fa3 | 101 | if (rctx == NULL) |
0f113f3e MC |
102 | return 0; |
103 | rctx->nbits = 1024; | |
0f113f3e | 104 | rctx->pad_mode = RSA_PKCS1_PADDING; |
0f113f3e | 105 | rctx->saltlen = -2; |
0f113f3e MC |
106 | ctx->data = rctx; |
107 | ctx->keygen_info = rctx->gentmp; | |
108 | ctx->keygen_info_count = 2; | |
109 | ||
110 | return 1; | |
111 | } | |
b2a97be7 | 112 | |
8bdcef40 | 113 | static int pkey_rsa_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) |
0f113f3e MC |
114 | { |
115 | RSA_PKEY_CTX *dctx, *sctx; | |
116 | if (!pkey_rsa_init(dst)) | |
117 | return 0; | |
118 | sctx = src->data; | |
119 | dctx = dst->data; | |
120 | dctx->nbits = sctx->nbits; | |
121 | if (sctx->pub_exp) { | |
122 | dctx->pub_exp = BN_dup(sctx->pub_exp); | |
123 | if (!dctx->pub_exp) | |
124 | return 0; | |
125 | } | |
126 | dctx->pad_mode = sctx->pad_mode; | |
127 | dctx->md = sctx->md; | |
128 | dctx->mgf1md = sctx->mgf1md; | |
129 | if (sctx->oaep_label) { | |
b548a1f1 | 130 | OPENSSL_free(dctx->oaep_label); |
7644a9ae | 131 | dctx->oaep_label = OPENSSL_memdup(sctx->oaep_label, sctx->oaep_labellen); |
0f113f3e MC |
132 | if (!dctx->oaep_label) |
133 | return 0; | |
134 | dctx->oaep_labellen = sctx->oaep_labellen; | |
135 | } | |
136 | return 1; | |
137 | } | |
8bdcef40 | 138 | |
b2a97be7 | 139 | static int setup_tbuf(RSA_PKEY_CTX *ctx, EVP_PKEY_CTX *pk) |
0f113f3e MC |
140 | { |
141 | if (ctx->tbuf) | |
142 | return 1; | |
143 | ctx->tbuf = OPENSSL_malloc(EVP_PKEY_size(pk->pkey)); | |
90945fa3 | 144 | if (ctx->tbuf == NULL) |
0f113f3e MC |
145 | return 0; |
146 | return 1; | |
147 | } | |
07e970c7 DSH |
148 | |
149 | static void pkey_rsa_cleanup(EVP_PKEY_CTX *ctx) | |
0f113f3e MC |
150 | { |
151 | RSA_PKEY_CTX *rctx = ctx->data; | |
152 | if (rctx) { | |
23a1d5e9 | 153 | BN_free(rctx->pub_exp); |
b548a1f1 RS |
154 | OPENSSL_free(rctx->tbuf); |
155 | OPENSSL_free(rctx->oaep_label); | |
0f113f3e MC |
156 | OPENSSL_free(rctx); |
157 | } | |
158 | } | |
159 | ||
160 | static int pkey_rsa_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, | |
161 | size_t *siglen, const unsigned char *tbs, | |
162 | size_t tbslen) | |
163 | { | |
164 | int ret; | |
165 | RSA_PKEY_CTX *rctx = ctx->data; | |
166 | RSA *rsa = ctx->pkey->pkey.rsa; | |
167 | ||
168 | if (rctx->md) { | |
169 | if (tbslen != (size_t)EVP_MD_size(rctx->md)) { | |
170 | RSAerr(RSA_F_PKEY_RSA_SIGN, RSA_R_INVALID_DIGEST_LENGTH); | |
171 | return -1; | |
172 | } | |
173 | ||
174 | if (EVP_MD_type(rctx->md) == NID_mdc2) { | |
175 | unsigned int sltmp; | |
176 | if (rctx->pad_mode != RSA_PKCS1_PADDING) | |
177 | return -1; | |
178 | ret = RSA_sign_ASN1_OCTET_STRING(NID_mdc2, | |
179 | tbs, tbslen, sig, &sltmp, rsa); | |
180 | ||
181 | if (ret <= 0) | |
182 | return ret; | |
183 | ret = sltmp; | |
184 | } else if (rctx->pad_mode == RSA_X931_PADDING) { | |
34166d41 MC |
185 | if ((size_t)EVP_PKEY_size(ctx->pkey) < tbslen + 1) { |
186 | RSAerr(RSA_F_PKEY_RSA_SIGN, RSA_R_KEY_SIZE_TOO_SMALL); | |
0f113f3e | 187 | return -1; |
34166d41 MC |
188 | } |
189 | if (!setup_tbuf(rctx, ctx)) { | |
190 | RSAerr(RSA_F_PKEY_RSA_SIGN, ERR_R_MALLOC_FAILURE); | |
191 | return -1; | |
192 | } | |
0f113f3e MC |
193 | memcpy(rctx->tbuf, tbs, tbslen); |
194 | rctx->tbuf[tbslen] = RSA_X931_hash_id(EVP_MD_type(rctx->md)); | |
195 | ret = RSA_private_encrypt(tbslen + 1, rctx->tbuf, | |
196 | sig, rsa, RSA_X931_PADDING); | |
197 | } else if (rctx->pad_mode == RSA_PKCS1_PADDING) { | |
198 | unsigned int sltmp; | |
199 | ret = RSA_sign(EVP_MD_type(rctx->md), | |
200 | tbs, tbslen, sig, &sltmp, rsa); | |
201 | if (ret <= 0) | |
202 | return ret; | |
203 | ret = sltmp; | |
204 | } else if (rctx->pad_mode == RSA_PKCS1_PSS_PADDING) { | |
205 | if (!setup_tbuf(rctx, ctx)) | |
206 | return -1; | |
207 | if (!RSA_padding_add_PKCS1_PSS_mgf1(rsa, | |
208 | rctx->tbuf, tbs, | |
209 | rctx->md, rctx->mgf1md, | |
210 | rctx->saltlen)) | |
211 | return -1; | |
212 | ret = RSA_private_encrypt(RSA_size(rsa), rctx->tbuf, | |
213 | sig, rsa, RSA_NO_PADDING); | |
214 | } else | |
215 | return -1; | |
216 | } else | |
217 | ret = RSA_private_encrypt(tbslen, tbs, sig, ctx->pkey->pkey.rsa, | |
218 | rctx->pad_mode); | |
219 | if (ret < 0) | |
220 | return ret; | |
221 | *siglen = ret; | |
222 | return 1; | |
223 | } | |
07e970c7 DSH |
224 | |
225 | static int pkey_rsa_verifyrecover(EVP_PKEY_CTX *ctx, | |
0f113f3e MC |
226 | unsigned char *rout, size_t *routlen, |
227 | const unsigned char *sig, size_t siglen) | |
228 | { | |
229 | int ret; | |
230 | RSA_PKEY_CTX *rctx = ctx->data; | |
231 | ||
232 | if (rctx->md) { | |
233 | if (rctx->pad_mode == RSA_X931_PADDING) { | |
234 | if (!setup_tbuf(rctx, ctx)) | |
235 | return -1; | |
236 | ret = RSA_public_decrypt(siglen, sig, | |
237 | rctx->tbuf, ctx->pkey->pkey.rsa, | |
238 | RSA_X931_PADDING); | |
239 | if (ret < 1) | |
240 | return 0; | |
241 | ret--; | |
242 | if (rctx->tbuf[ret] != RSA_X931_hash_id(EVP_MD_type(rctx->md))) { | |
243 | RSAerr(RSA_F_PKEY_RSA_VERIFYRECOVER, | |
244 | RSA_R_ALGORITHM_MISMATCH); | |
245 | return 0; | |
246 | } | |
247 | if (ret != EVP_MD_size(rctx->md)) { | |
248 | RSAerr(RSA_F_PKEY_RSA_VERIFYRECOVER, | |
249 | RSA_R_INVALID_DIGEST_LENGTH); | |
250 | return 0; | |
251 | } | |
252 | if (rout) | |
253 | memcpy(rout, rctx->tbuf, ret); | |
254 | } else if (rctx->pad_mode == RSA_PKCS1_PADDING) { | |
255 | size_t sltmp; | |
256 | ret = int_rsa_verify(EVP_MD_type(rctx->md), | |
257 | NULL, 0, rout, &sltmp, | |
258 | sig, siglen, ctx->pkey->pkey.rsa); | |
259 | if (ret <= 0) | |
260 | return 0; | |
261 | ret = sltmp; | |
262 | } else | |
263 | return -1; | |
264 | } else | |
265 | ret = RSA_public_decrypt(siglen, sig, rout, ctx->pkey->pkey.rsa, | |
266 | rctx->pad_mode); | |
267 | if (ret < 0) | |
268 | return ret; | |
269 | *routlen = ret; | |
270 | return 1; | |
271 | } | |
07e970c7 | 272 | |
4f59b658 | 273 | static int pkey_rsa_verify(EVP_PKEY_CTX *ctx, |
0f113f3e MC |
274 | const unsigned char *sig, size_t siglen, |
275 | const unsigned char *tbs, size_t tbslen) | |
276 | { | |
277 | RSA_PKEY_CTX *rctx = ctx->data; | |
278 | RSA *rsa = ctx->pkey->pkey.rsa; | |
279 | size_t rslen; | |
280 | if (rctx->md) { | |
281 | if (rctx->pad_mode == RSA_PKCS1_PADDING) | |
282 | return RSA_verify(EVP_MD_type(rctx->md), tbs, tbslen, | |
283 | sig, siglen, rsa); | |
284 | if (rctx->pad_mode == RSA_X931_PADDING) { | |
285 | if (pkey_rsa_verifyrecover(ctx, NULL, &rslen, sig, siglen) <= 0) | |
286 | return 0; | |
287 | } else if (rctx->pad_mode == RSA_PKCS1_PSS_PADDING) { | |
288 | int ret; | |
289 | if (!setup_tbuf(rctx, ctx)) | |
290 | return -1; | |
291 | ret = RSA_public_decrypt(siglen, sig, rctx->tbuf, | |
292 | rsa, RSA_NO_PADDING); | |
293 | if (ret <= 0) | |
294 | return 0; | |
295 | ret = RSA_verify_PKCS1_PSS_mgf1(rsa, tbs, | |
296 | rctx->md, rctx->mgf1md, | |
297 | rctx->tbuf, rctx->saltlen); | |
298 | if (ret <= 0) | |
299 | return 0; | |
300 | return 1; | |
301 | } else | |
302 | return -1; | |
303 | } else { | |
304 | if (!setup_tbuf(rctx, ctx)) | |
305 | return -1; | |
306 | rslen = RSA_public_decrypt(siglen, sig, rctx->tbuf, | |
307 | rsa, rctx->pad_mode); | |
308 | if (rslen == 0) | |
309 | return 0; | |
310 | } | |
311 | ||
312 | if ((rslen != tbslen) || memcmp(tbs, rctx->tbuf, rslen)) | |
313 | return 0; | |
314 | ||
315 | return 1; | |
316 | ||
317 | } | |
4f59b658 | 318 | |
eaff5a14 | 319 | static int pkey_rsa_encrypt(EVP_PKEY_CTX *ctx, |
0f113f3e MC |
320 | unsigned char *out, size_t *outlen, |
321 | const unsigned char *in, size_t inlen) | |
322 | { | |
323 | int ret; | |
324 | RSA_PKEY_CTX *rctx = ctx->data; | |
325 | if (rctx->pad_mode == RSA_PKCS1_OAEP_PADDING) { | |
326 | int klen = RSA_size(ctx->pkey->pkey.rsa); | |
327 | if (!setup_tbuf(rctx, ctx)) | |
328 | return -1; | |
329 | if (!RSA_padding_add_PKCS1_OAEP_mgf1(rctx->tbuf, klen, | |
330 | in, inlen, | |
331 | rctx->oaep_label, | |
332 | rctx->oaep_labellen, | |
333 | rctx->md, rctx->mgf1md)) | |
334 | return -1; | |
335 | ret = RSA_public_encrypt(klen, rctx->tbuf, out, | |
336 | ctx->pkey->pkey.rsa, RSA_NO_PADDING); | |
337 | } else | |
338 | ret = RSA_public_encrypt(inlen, in, out, ctx->pkey->pkey.rsa, | |
339 | rctx->pad_mode); | |
340 | if (ret < 0) | |
341 | return ret; | |
342 | *outlen = ret; | |
343 | return 1; | |
344 | } | |
8cd44e36 | 345 | |
eaff5a14 | 346 | static int pkey_rsa_decrypt(EVP_PKEY_CTX *ctx, |
0f113f3e MC |
347 | unsigned char *out, size_t *outlen, |
348 | const unsigned char *in, size_t inlen) | |
349 | { | |
350 | int ret; | |
351 | RSA_PKEY_CTX *rctx = ctx->data; | |
352 | if (rctx->pad_mode == RSA_PKCS1_OAEP_PADDING) { | |
353 | int i; | |
354 | if (!setup_tbuf(rctx, ctx)) | |
355 | return -1; | |
356 | ret = RSA_private_decrypt(inlen, in, rctx->tbuf, | |
357 | ctx->pkey->pkey.rsa, RSA_NO_PADDING); | |
358 | if (ret <= 0) | |
359 | return ret; | |
360 | for (i = 0; i < ret; i++) { | |
361 | if (rctx->tbuf[i]) | |
362 | break; | |
363 | } | |
364 | ret = RSA_padding_check_PKCS1_OAEP_mgf1(out, ret, rctx->tbuf + i, | |
365 | ret - i, ret, | |
366 | rctx->oaep_label, | |
367 | rctx->oaep_labellen, | |
368 | rctx->md, rctx->mgf1md); | |
369 | } else | |
370 | ret = RSA_private_decrypt(inlen, in, out, ctx->pkey->pkey.rsa, | |
371 | rctx->pad_mode); | |
372 | if (ret < 0) | |
373 | return ret; | |
374 | *outlen = ret; | |
375 | return 1; | |
376 | } | |
07e970c7 | 377 | |
75d44c04 | 378 | static int check_padding_md(const EVP_MD *md, int padding) |
0f113f3e | 379 | { |
7f572e95 | 380 | int mdnid; |
0f113f3e MC |
381 | if (!md) |
382 | return 1; | |
383 | ||
7f572e95 DSH |
384 | mdnid = EVP_MD_type(md); |
385 | ||
0f113f3e MC |
386 | if (padding == RSA_NO_PADDING) { |
387 | RSAerr(RSA_F_CHECK_PADDING_MD, RSA_R_INVALID_PADDING_MODE); | |
388 | return 0; | |
389 | } | |
390 | ||
391 | if (padding == RSA_X931_PADDING) { | |
7f572e95 | 392 | if (RSA_X931_hash_id(mdnid) == -1) { |
0f113f3e MC |
393 | RSAerr(RSA_F_CHECK_PADDING_MD, RSA_R_INVALID_X931_DIGEST); |
394 | return 0; | |
395 | } | |
7f572e95 DSH |
396 | } else { |
397 | switch(mdnid) { | |
398 | /* List of all supported RSA digests */ | |
399 | case NID_sha1: | |
400 | case NID_sha224: | |
401 | case NID_sha256: | |
402 | case NID_sha384: | |
403 | case NID_sha512: | |
404 | case NID_md5: | |
405 | case NID_md5_sha1: | |
406 | case NID_md2: | |
407 | case NID_md4: | |
408 | case NID_mdc2: | |
409 | case NID_ripemd160: | |
410 | return 1; | |
411 | ||
412 | default: | |
413 | RSAerr(RSA_F_CHECK_PADDING_MD, RSA_R_INVALID_DIGEST); | |
414 | return 0; | |
415 | ||
416 | } | |
0f113f3e MC |
417 | } |
418 | ||
419 | return 1; | |
420 | } | |
b2a97be7 | 421 | |
4a3dc3c0 | 422 | static int pkey_rsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) |
0f113f3e MC |
423 | { |
424 | RSA_PKEY_CTX *rctx = ctx->data; | |
425 | switch (type) { | |
426 | case EVP_PKEY_CTRL_RSA_PADDING: | |
427 | if ((p1 >= RSA_PKCS1_PADDING) && (p1 <= RSA_PKCS1_PSS_PADDING)) { | |
428 | if (!check_padding_md(rctx->md, p1)) | |
429 | return 0; | |
430 | if (p1 == RSA_PKCS1_PSS_PADDING) { | |
431 | if (!(ctx->operation & | |
432 | (EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY))) | |
433 | goto bad_pad; | |
434 | if (!rctx->md) | |
435 | rctx->md = EVP_sha1(); | |
436 | } | |
437 | if (p1 == RSA_PKCS1_OAEP_PADDING) { | |
438 | if (!(ctx->operation & EVP_PKEY_OP_TYPE_CRYPT)) | |
439 | goto bad_pad; | |
440 | if (!rctx->md) | |
441 | rctx->md = EVP_sha1(); | |
442 | } | |
443 | rctx->pad_mode = p1; | |
444 | return 1; | |
445 | } | |
446 | bad_pad: | |
447 | RSAerr(RSA_F_PKEY_RSA_CTRL, | |
448 | RSA_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE); | |
449 | return -2; | |
450 | ||
451 | case EVP_PKEY_CTRL_GET_RSA_PADDING: | |
452 | *(int *)p2 = rctx->pad_mode; | |
453 | return 1; | |
454 | ||
455 | case EVP_PKEY_CTRL_RSA_PSS_SALTLEN: | |
456 | case EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN: | |
457 | if (rctx->pad_mode != RSA_PKCS1_PSS_PADDING) { | |
458 | RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PSS_SALTLEN); | |
459 | return -2; | |
460 | } | |
461 | if (type == EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN) | |
462 | *(int *)p2 = rctx->saltlen; | |
463 | else { | |
464 | if (p1 < -2) | |
465 | return -2; | |
466 | rctx->saltlen = p1; | |
467 | } | |
468 | return 1; | |
469 | ||
470 | case EVP_PKEY_CTRL_RSA_KEYGEN_BITS: | |
471 | if (p1 < 512) { | |
472 | RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_KEY_SIZE_TOO_SMALL); | |
473 | return -2; | |
474 | } | |
475 | rctx->nbits = p1; | |
476 | return 1; | |
477 | ||
478 | case EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP: | |
479 | if (!p2) | |
480 | return -2; | |
481 | BN_free(rctx->pub_exp); | |
482 | rctx->pub_exp = p2; | |
483 | return 1; | |
484 | ||
485 | case EVP_PKEY_CTRL_RSA_OAEP_MD: | |
486 | case EVP_PKEY_CTRL_GET_RSA_OAEP_MD: | |
487 | if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) { | |
488 | RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PADDING_MODE); | |
489 | return -2; | |
490 | } | |
491 | if (type == EVP_PKEY_CTRL_GET_RSA_OAEP_MD) | |
492 | *(const EVP_MD **)p2 = rctx->md; | |
493 | else | |
494 | rctx->md = p2; | |
495 | return 1; | |
496 | ||
497 | case EVP_PKEY_CTRL_MD: | |
498 | if (!check_padding_md(p2, rctx->pad_mode)) | |
499 | return 0; | |
500 | rctx->md = p2; | |
501 | return 1; | |
502 | ||
503 | case EVP_PKEY_CTRL_GET_MD: | |
504 | *(const EVP_MD **)p2 = rctx->md; | |
505 | return 1; | |
506 | ||
507 | case EVP_PKEY_CTRL_RSA_MGF1_MD: | |
508 | case EVP_PKEY_CTRL_GET_RSA_MGF1_MD: | |
509 | if (rctx->pad_mode != RSA_PKCS1_PSS_PADDING | |
510 | && rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) { | |
511 | RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_MGF1_MD); | |
512 | return -2; | |
513 | } | |
514 | if (type == EVP_PKEY_CTRL_GET_RSA_MGF1_MD) { | |
515 | if (rctx->mgf1md) | |
516 | *(const EVP_MD **)p2 = rctx->mgf1md; | |
517 | else | |
518 | *(const EVP_MD **)p2 = rctx->md; | |
519 | } else | |
520 | rctx->mgf1md = p2; | |
521 | return 1; | |
522 | ||
523 | case EVP_PKEY_CTRL_RSA_OAEP_LABEL: | |
524 | if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) { | |
525 | RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PADDING_MODE); | |
526 | return -2; | |
527 | } | |
b548a1f1 | 528 | OPENSSL_free(rctx->oaep_label); |
0f113f3e MC |
529 | if (p2 && p1 > 0) { |
530 | rctx->oaep_label = p2; | |
531 | rctx->oaep_labellen = p1; | |
532 | } else { | |
533 | rctx->oaep_label = NULL; | |
534 | rctx->oaep_labellen = 0; | |
535 | } | |
536 | return 1; | |
537 | ||
538 | case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL: | |
539 | if (rctx->pad_mode != RSA_PKCS1_OAEP_PADDING) { | |
540 | RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PADDING_MODE); | |
541 | return -2; | |
542 | } | |
543 | *(unsigned char **)p2 = rctx->oaep_label; | |
544 | return rctx->oaep_labellen; | |
545 | ||
546 | case EVP_PKEY_CTRL_DIGESTINIT: | |
547 | case EVP_PKEY_CTRL_PKCS7_ENCRYPT: | |
548 | case EVP_PKEY_CTRL_PKCS7_DECRYPT: | |
549 | case EVP_PKEY_CTRL_PKCS7_SIGN: | |
550 | return 1; | |
8931b30d | 551 | #ifndef OPENSSL_NO_CMS |
0f113f3e MC |
552 | case EVP_PKEY_CTRL_CMS_DECRYPT: |
553 | case EVP_PKEY_CTRL_CMS_ENCRYPT: | |
554 | case EVP_PKEY_CTRL_CMS_SIGN: | |
555 | return 1; | |
b3339050 | 556 | #endif |
0f113f3e MC |
557 | case EVP_PKEY_CTRL_PEER_KEY: |
558 | RSAerr(RSA_F_PKEY_RSA_CTRL, | |
559 | RSA_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); | |
560 | return -2; | |
561 | ||
562 | default: | |
563 | return -2; | |
399a6f0b | 564 | |
0f113f3e MC |
565 | } |
566 | } | |
4a3dc3c0 | 567 | |
4a3dc3c0 | 568 | static int pkey_rsa_ctrl_str(EVP_PKEY_CTX *ctx, |
0f113f3e MC |
569 | const char *type, const char *value) |
570 | { | |
571 | if (!value) { | |
572 | RSAerr(RSA_F_PKEY_RSA_CTRL_STR, RSA_R_VALUE_MISSING); | |
573 | return 0; | |
574 | } | |
86885c28 | 575 | if (strcmp(type, "rsa_padding_mode") == 0) { |
0f113f3e | 576 | int pm; |
86885c28 | 577 | if (strcmp(value, "pkcs1") == 0) |
0f113f3e | 578 | pm = RSA_PKCS1_PADDING; |
86885c28 | 579 | else if (strcmp(value, "sslv23") == 0) |
0f113f3e | 580 | pm = RSA_SSLV23_PADDING; |
86885c28 | 581 | else if (strcmp(value, "none") == 0) |
0f113f3e | 582 | pm = RSA_NO_PADDING; |
86885c28 | 583 | else if (strcmp(value, "oeap") == 0) |
0f113f3e | 584 | pm = RSA_PKCS1_OAEP_PADDING; |
86885c28 | 585 | else if (strcmp(value, "oaep") == 0) |
0f113f3e | 586 | pm = RSA_PKCS1_OAEP_PADDING; |
86885c28 | 587 | else if (strcmp(value, "x931") == 0) |
0f113f3e | 588 | pm = RSA_X931_PADDING; |
86885c28 | 589 | else if (strcmp(value, "pss") == 0) |
0f113f3e MC |
590 | pm = RSA_PKCS1_PSS_PADDING; |
591 | else { | |
592 | RSAerr(RSA_F_PKEY_RSA_CTRL_STR, RSA_R_UNKNOWN_PADDING_TYPE); | |
593 | return -2; | |
594 | } | |
595 | return EVP_PKEY_CTX_set_rsa_padding(ctx, pm); | |
596 | } | |
597 | ||
86885c28 | 598 | if (strcmp(type, "rsa_pss_saltlen") == 0) { |
0f113f3e MC |
599 | int saltlen; |
600 | saltlen = atoi(value); | |
601 | return EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, saltlen); | |
602 | } | |
603 | ||
86885c28 | 604 | if (strcmp(type, "rsa_keygen_bits") == 0) { |
0f113f3e MC |
605 | int nbits; |
606 | nbits = atoi(value); | |
607 | return EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, nbits); | |
608 | } | |
609 | ||
86885c28 | 610 | if (strcmp(type, "rsa_keygen_pubexp") == 0) { |
0f113f3e MC |
611 | int ret; |
612 | BIGNUM *pubexp = NULL; | |
613 | if (!BN_asc2bn(&pubexp, value)) | |
614 | return 0; | |
615 | ret = EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, pubexp); | |
616 | if (ret <= 0) | |
617 | BN_free(pubexp); | |
618 | return ret; | |
619 | } | |
620 | ||
86885c28 | 621 | if (strcmp(type, "rsa_mgf1_md") == 0) { |
0f113f3e | 622 | const EVP_MD *md; |
75ebbd9a | 623 | if ((md = EVP_get_digestbyname(value)) == NULL) { |
0f113f3e MC |
624 | RSAerr(RSA_F_PKEY_RSA_CTRL_STR, RSA_R_INVALID_DIGEST); |
625 | return 0; | |
626 | } | |
627 | return EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, md); | |
628 | } | |
629 | ||
86885c28 | 630 | if (strcmp(type, "rsa_oaep_md") == 0) { |
0f113f3e | 631 | const EVP_MD *md; |
75ebbd9a | 632 | if ((md = EVP_get_digestbyname(value)) == NULL) { |
0f113f3e MC |
633 | RSAerr(RSA_F_PKEY_RSA_CTRL_STR, RSA_R_INVALID_DIGEST); |
634 | return 0; | |
635 | } | |
636 | return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, md); | |
637 | } | |
86885c28 | 638 | if (strcmp(type, "rsa_oaep_label") == 0) { |
0f113f3e MC |
639 | unsigned char *lab; |
640 | long lablen; | |
641 | int ret; | |
642 | lab = string_to_hex(value, &lablen); | |
643 | if (!lab) | |
644 | return 0; | |
645 | ret = EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, lab, lablen); | |
646 | if (ret <= 0) | |
647 | OPENSSL_free(lab); | |
648 | return ret; | |
649 | } | |
650 | ||
651 | return -2; | |
652 | } | |
4a3dc3c0 | 653 | |
f5cda4cb | 654 | static int pkey_rsa_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) |
0f113f3e MC |
655 | { |
656 | RSA *rsa = NULL; | |
657 | RSA_PKEY_CTX *rctx = ctx->data; | |
658 | BN_GENCB *pcb; | |
659 | int ret; | |
90945fa3 | 660 | if (rctx->pub_exp == NULL) { |
0f113f3e | 661 | rctx->pub_exp = BN_new(); |
90945fa3 | 662 | if (rctx->pub_exp == NULL || !BN_set_word(rctx->pub_exp, RSA_F4)) |
0f113f3e MC |
663 | return 0; |
664 | } | |
665 | rsa = RSA_new(); | |
90945fa3 | 666 | if (rsa == NULL) |
0f113f3e MC |
667 | return 0; |
668 | if (ctx->pkey_gencb) { | |
669 | pcb = BN_GENCB_new(); | |
90945fa3 | 670 | if (pcb == NULL) { |
0f113f3e MC |
671 | RSA_free(rsa); |
672 | return 0; | |
673 | } | |
674 | evp_pkey_set_cb_translate(pcb, ctx); | |
675 | } else | |
676 | pcb = NULL; | |
677 | ret = RSA_generate_key_ex(rsa, rctx->nbits, rctx->pub_exp, pcb); | |
678 | BN_GENCB_free(pcb); | |
679 | if (ret > 0) | |
680 | EVP_PKEY_assign_RSA(pkey, rsa); | |
681 | else | |
682 | RSA_free(rsa); | |
683 | return ret; | |
684 | } | |
685 | ||
686 | const EVP_PKEY_METHOD rsa_pkey_meth = { | |
687 | EVP_PKEY_RSA, | |
688 | EVP_PKEY_FLAG_AUTOARGLEN, | |
689 | pkey_rsa_init, | |
690 | pkey_rsa_copy, | |
691 | pkey_rsa_cleanup, | |
692 | ||
693 | 0, 0, | |
694 | ||
695 | 0, | |
696 | pkey_rsa_keygen, | |
697 | ||
698 | 0, | |
699 | pkey_rsa_sign, | |
700 | ||
701 | 0, | |
702 | pkey_rsa_verify, | |
703 | ||
704 | 0, | |
705 | pkey_rsa_verifyrecover, | |
706 | ||
707 | 0, 0, 0, 0, | |
708 | ||
709 | 0, | |
710 | pkey_rsa_encrypt, | |
711 | ||
712 | 0, | |
713 | pkey_rsa_decrypt, | |
714 | ||
715 | 0, 0, | |
716 | ||
717 | pkey_rsa_ctrl, | |
718 | pkey_rsa_ctrl_str | |
719 | }; |