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0f113f3e MC |
1 | /* |
2 | * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project | |
3 | * 2006. | |
448be743 DSH |
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 | |
0f113f3e | 13 | * notice, this list of conditions and the following disclaimer. |
448be743 DSH |
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/x509.h> | |
62 | #include <openssl/asn1.h> | |
63 | #include <openssl/dsa.h> | |
1e26a8ba | 64 | #include <openssl/bn.h> |
8931b30d | 65 | #ifndef OPENSSL_NO_CMS |
0f113f3e | 66 | # include <openssl/cms.h> |
8931b30d | 67 | #endif |
5fe736e5 | 68 | #include "internal/asn1_int.h" |
448be743 DSH |
69 | |
70 | static int dsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey) | |
0f113f3e MC |
71 | { |
72 | const unsigned char *p, *pm; | |
73 | int pklen, pmlen; | |
74 | int ptype; | |
75 | void *pval; | |
76 | ASN1_STRING *pstr; | |
77 | X509_ALGOR *palg; | |
78 | ASN1_INTEGER *public_key = NULL; | |
79 | ||
80 | DSA *dsa = NULL; | |
81 | ||
82 | if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey)) | |
83 | return 0; | |
84 | X509_ALGOR_get0(NULL, &ptype, &pval, palg); | |
85 | ||
86 | if (ptype == V_ASN1_SEQUENCE) { | |
87 | pstr = pval; | |
88 | pm = pstr->data; | |
89 | pmlen = pstr->length; | |
90 | ||
91 | if (!(dsa = d2i_DSAparams(NULL, &pm, pmlen))) { | |
92 | DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_DECODE_ERROR); | |
93 | goto err; | |
94 | } | |
95 | ||
96 | } else if ((ptype == V_ASN1_NULL) || (ptype == V_ASN1_UNDEF)) { | |
97 | if (!(dsa = DSA_new())) { | |
98 | DSAerr(DSA_F_DSA_PUB_DECODE, ERR_R_MALLOC_FAILURE); | |
99 | goto err; | |
100 | } | |
101 | } else { | |
102 | DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_PARAMETER_ENCODING_ERROR); | |
103 | goto err; | |
104 | } | |
105 | ||
106 | if (!(public_key = d2i_ASN1_INTEGER(NULL, &p, pklen))) { | |
107 | DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_DECODE_ERROR); | |
108 | goto err; | |
109 | } | |
110 | ||
111 | if (!(dsa->pub_key = ASN1_INTEGER_to_BN(public_key, NULL))) { | |
112 | DSAerr(DSA_F_DSA_PUB_DECODE, DSA_R_BN_DECODE_ERROR); | |
113 | goto err; | |
114 | } | |
115 | ||
116 | ASN1_INTEGER_free(public_key); | |
117 | EVP_PKEY_assign_DSA(pkey, dsa); | |
118 | return 1; | |
119 | ||
120 | err: | |
2ace7450 | 121 | ASN1_INTEGER_free(public_key); |
d6407083 | 122 | DSA_free(dsa); |
0f113f3e MC |
123 | return 0; |
124 | ||
125 | } | |
448be743 | 126 | |
6f81892e | 127 | static int dsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey) |
0f113f3e MC |
128 | { |
129 | DSA *dsa; | |
0f113f3e MC |
130 | int ptype; |
131 | unsigned char *penc = NULL; | |
132 | int penclen; | |
0c7ca403 | 133 | ASN1_STRING *str = NULL; |
ea6b07b5 | 134 | ASN1_INTEGER *pubint = NULL; |
0f113f3e MC |
135 | |
136 | dsa = pkey->pkey.dsa; | |
137 | if (pkey->save_parameters && dsa->p && dsa->q && dsa->g) { | |
0f113f3e | 138 | str = ASN1_STRING_new(); |
0c7ca403 MC |
139 | if (!str) { |
140 | DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE); | |
141 | goto err; | |
142 | } | |
0f113f3e MC |
143 | str->length = i2d_DSAparams(dsa, &str->data); |
144 | if (str->length <= 0) { | |
145 | DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE); | |
146 | goto err; | |
147 | } | |
0f113f3e MC |
148 | ptype = V_ASN1_SEQUENCE; |
149 | } else | |
150 | ptype = V_ASN1_UNDEF; | |
151 | ||
ea6b07b5 | 152 | pubint = BN_to_ASN1_INTEGER(dsa->pub_key, NULL); |
0f113f3e | 153 | |
ea6b07b5 DSH |
154 | if (pubint == NULL) { |
155 | DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE); | |
156 | goto err; | |
157 | } | |
158 | ||
159 | penclen = i2d_ASN1_INTEGER(pubint, &penc); | |
160 | ASN1_INTEGER_free(pubint); | |
0f113f3e MC |
161 | |
162 | if (penclen <= 0) { | |
163 | DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE); | |
164 | goto err; | |
165 | } | |
166 | ||
167 | if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_DSA), | |
0c7ca403 | 168 | ptype, str, penc, penclen)) |
0f113f3e MC |
169 | return 1; |
170 | ||
171 | err: | |
172 | if (penc) | |
173 | OPENSSL_free(penc); | |
0dfb9398 | 174 | ASN1_STRING_free(str); |
0f113f3e MC |
175 | |
176 | return 0; | |
177 | } | |
178 | ||
179 | /* | |
180 | * In PKCS#8 DSA: you just get a private key integer and parameters in the | |
448be743 DSH |
181 | * AlgorithmIdentifier the pubkey must be recalculated. |
182 | */ | |
0f113f3e | 183 | |
448be743 | 184 | static int dsa_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8) |
0f113f3e MC |
185 | { |
186 | const unsigned char *p, *pm; | |
187 | int pklen, pmlen; | |
188 | int ptype; | |
189 | void *pval; | |
190 | ASN1_STRING *pstr; | |
191 | X509_ALGOR *palg; | |
192 | ASN1_INTEGER *privkey = NULL; | |
193 | BN_CTX *ctx = NULL; | |
194 | ||
195 | STACK_OF(ASN1_TYPE) *ndsa = NULL; | |
196 | DSA *dsa = NULL; | |
197 | ||
198 | if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8)) | |
199 | return 0; | |
200 | X509_ALGOR_get0(NULL, &ptype, &pval, palg); | |
201 | ||
202 | /* Check for broken DSA PKCS#8, UGH! */ | |
203 | if (*p == (V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED)) { | |
204 | ASN1_TYPE *t1, *t2; | |
205 | if (!(ndsa = d2i_ASN1_SEQUENCE_ANY(NULL, &p, pklen))) | |
206 | goto decerr; | |
207 | if (sk_ASN1_TYPE_num(ndsa) != 2) | |
208 | goto decerr; | |
50e735f9 MC |
209 | /*- |
210 | * Handle Two broken types: | |
211 | * SEQUENCE {parameters, priv_key} | |
212 | * SEQUENCE {pub_key, priv_key} | |
213 | */ | |
0f113f3e MC |
214 | |
215 | t1 = sk_ASN1_TYPE_value(ndsa, 0); | |
216 | t2 = sk_ASN1_TYPE_value(ndsa, 1); | |
217 | if (t1->type == V_ASN1_SEQUENCE) { | |
218 | p8->broken = PKCS8_EMBEDDED_PARAM; | |
219 | pval = t1->value.ptr; | |
220 | } else if (ptype == V_ASN1_SEQUENCE) | |
221 | p8->broken = PKCS8_NS_DB; | |
222 | else | |
223 | goto decerr; | |
224 | ||
225 | if (t2->type != V_ASN1_INTEGER) | |
226 | goto decerr; | |
227 | ||
228 | privkey = t2->value.integer; | |
229 | } else { | |
230 | const unsigned char *q = p; | |
231 | if (!(privkey = d2i_ASN1_INTEGER(NULL, &p, pklen))) | |
232 | goto decerr; | |
233 | if (privkey->type == V_ASN1_NEG_INTEGER) { | |
234 | p8->broken = PKCS8_NEG_PRIVKEY; | |
a8ae0891 | 235 | ASN1_STRING_clear_free(privkey); |
0f113f3e MC |
236 | if (!(privkey = d2i_ASN1_UINTEGER(NULL, &q, pklen))) |
237 | goto decerr; | |
238 | } | |
239 | if (ptype != V_ASN1_SEQUENCE) | |
240 | goto decerr; | |
241 | } | |
242 | ||
243 | pstr = pval; | |
244 | pm = pstr->data; | |
245 | pmlen = pstr->length; | |
246 | if (!(dsa = d2i_DSAparams(NULL, &pm, pmlen))) | |
247 | goto decerr; | |
248 | /* We have parameters now set private key */ | |
249 | if (!(dsa->priv_key = ASN1_INTEGER_to_BN(privkey, NULL))) { | |
250 | DSAerr(DSA_F_DSA_PRIV_DECODE, DSA_R_BN_ERROR); | |
251 | goto dsaerr; | |
252 | } | |
253 | /* Calculate public key */ | |
254 | if (!(dsa->pub_key = BN_new())) { | |
255 | DSAerr(DSA_F_DSA_PRIV_DECODE, ERR_R_MALLOC_FAILURE); | |
256 | goto dsaerr; | |
257 | } | |
258 | if (!(ctx = BN_CTX_new())) { | |
259 | DSAerr(DSA_F_DSA_PRIV_DECODE, ERR_R_MALLOC_FAILURE); | |
260 | goto dsaerr; | |
261 | } | |
262 | ||
263 | if (!BN_mod_exp(dsa->pub_key, dsa->g, dsa->priv_key, dsa->p, ctx)) { | |
264 | DSAerr(DSA_F_DSA_PRIV_DECODE, DSA_R_BN_ERROR); | |
265 | goto dsaerr; | |
266 | } | |
267 | ||
268 | EVP_PKEY_assign_DSA(pkey, dsa); | |
269 | BN_CTX_free(ctx); | |
270 | if (ndsa) | |
271 | sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free); | |
272 | else | |
a8ae0891 | 273 | ASN1_STRING_clear_free(privkey); |
0f113f3e MC |
274 | |
275 | return 1; | |
276 | ||
277 | decerr: | |
278 | DSAerr(DSA_F_DSA_PRIV_DECODE, EVP_R_DECODE_ERROR); | |
279 | dsaerr: | |
280 | BN_CTX_free(ctx); | |
2ace7450 | 281 | ASN1_STRING_clear_free(privkey); |
0f113f3e MC |
282 | sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free); |
283 | DSA_free(dsa); | |
284 | return 0; | |
285 | } | |
448be743 | 286 | |
6f81892e | 287 | static int dsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey) |
448be743 | 288 | { |
0f113f3e MC |
289 | ASN1_STRING *params = NULL; |
290 | ASN1_INTEGER *prkey = NULL; | |
291 | unsigned char *dp = NULL; | |
292 | int dplen; | |
293 | ||
294 | if (!pkey->pkey.dsa || !pkey->pkey.dsa->priv_key) { | |
295 | DSAerr(DSA_F_DSA_PRIV_ENCODE, DSA_R_MISSING_PARAMETERS); | |
296 | goto err; | |
297 | } | |
298 | ||
299 | params = ASN1_STRING_new(); | |
300 | ||
301 | if (!params) { | |
302 | DSAerr(DSA_F_DSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE); | |
303 | goto err; | |
304 | } | |
305 | ||
306 | params->length = i2d_DSAparams(pkey->pkey.dsa, ¶ms->data); | |
307 | if (params->length <= 0) { | |
308 | DSAerr(DSA_F_DSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE); | |
309 | goto err; | |
310 | } | |
311 | params->type = V_ASN1_SEQUENCE; | |
312 | ||
313 | /* Get private key into integer */ | |
314 | prkey = BN_to_ASN1_INTEGER(pkey->pkey.dsa->priv_key, NULL); | |
315 | ||
316 | if (!prkey) { | |
317 | DSAerr(DSA_F_DSA_PRIV_ENCODE, DSA_R_BN_ERROR); | |
318 | goto err; | |
319 | } | |
320 | ||
321 | dplen = i2d_ASN1_INTEGER(prkey, &dp); | |
322 | ||
a8ae0891 | 323 | ASN1_STRING_clear_free(prkey); |
0f113f3e MC |
324 | |
325 | if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_dsa), 0, | |
326 | V_ASN1_SEQUENCE, params, dp, dplen)) | |
327 | goto err; | |
328 | ||
329 | return 1; | |
330 | ||
331 | err: | |
332 | if (dp != NULL) | |
333 | OPENSSL_free(dp); | |
0dfb9398 | 334 | ASN1_STRING_free(params); |
2ace7450 | 335 | ASN1_STRING_clear_free(prkey); |
0f113f3e | 336 | return 0; |
448be743 DSH |
337 | } |
338 | ||
6f81892e | 339 | static int int_dsa_size(const EVP_PKEY *pkey) |
0f113f3e MC |
340 | { |
341 | return (DSA_size(pkey->pkey.dsa)); | |
342 | } | |
6f81892e DSH |
343 | |
344 | static int dsa_bits(const EVP_PKEY *pkey) | |
0f113f3e MC |
345 | { |
346 | return BN_num_bits(pkey->pkey.dsa->p); | |
347 | } | |
6f81892e | 348 | |
2514fa79 | 349 | static int dsa_security_bits(const EVP_PKEY *pkey) |
0f113f3e MC |
350 | { |
351 | return DSA_security_bits(pkey->pkey.dsa); | |
352 | } | |
2514fa79 | 353 | |
6f81892e | 354 | static int dsa_missing_parameters(const EVP_PKEY *pkey) |
0f113f3e MC |
355 | { |
356 | DSA *dsa; | |
357 | dsa = pkey->pkey.dsa; | |
358 | if ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL)) | |
359 | return 1; | |
360 | return 0; | |
361 | } | |
6f81892e DSH |
362 | |
363 | static int dsa_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) | |
0f113f3e MC |
364 | { |
365 | BIGNUM *a; | |
366 | ||
367 | if ((a = BN_dup(from->pkey.dsa->p)) == NULL) | |
368 | return 0; | |
369 | if (to->pkey.dsa->p != NULL) | |
370 | BN_free(to->pkey.dsa->p); | |
371 | to->pkey.dsa->p = a; | |
372 | ||
373 | if ((a = BN_dup(from->pkey.dsa->q)) == NULL) | |
374 | return 0; | |
375 | if (to->pkey.dsa->q != NULL) | |
376 | BN_free(to->pkey.dsa->q); | |
377 | to->pkey.dsa->q = a; | |
378 | ||
379 | if ((a = BN_dup(from->pkey.dsa->g)) == NULL) | |
380 | return 0; | |
381 | if (to->pkey.dsa->g != NULL) | |
382 | BN_free(to->pkey.dsa->g); | |
383 | to->pkey.dsa->g = a; | |
384 | return 1; | |
385 | } | |
6f81892e DSH |
386 | |
387 | static int dsa_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) | |
0f113f3e MC |
388 | { |
389 | if (BN_cmp(a->pkey.dsa->p, b->pkey.dsa->p) || | |
390 | BN_cmp(a->pkey.dsa->q, b->pkey.dsa->q) || | |
391 | BN_cmp(a->pkey.dsa->g, b->pkey.dsa->g)) | |
392 | return 0; | |
393 | else | |
394 | return 1; | |
395 | } | |
6f81892e | 396 | |
0cb8499b | 397 | static int dsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) |
0f113f3e MC |
398 | { |
399 | if (BN_cmp(b->pkey.dsa->pub_key, a->pkey.dsa->pub_key) != 0) | |
400 | return 0; | |
401 | else | |
402 | return 1; | |
403 | } | |
0cb8499b | 404 | |
6f81892e | 405 | static void int_dsa_free(EVP_PKEY *pkey) |
0f113f3e MC |
406 | { |
407 | DSA_free(pkey->pkey.dsa); | |
408 | } | |
6f81892e | 409 | |
35208f36 | 410 | static void update_buflen(const BIGNUM *b, size_t *pbuflen) |
0f113f3e MC |
411 | { |
412 | size_t i; | |
413 | if (!b) | |
414 | return; | |
415 | if (*pbuflen < (i = (size_t)BN_num_bytes(b))) | |
416 | *pbuflen = i; | |
417 | } | |
35208f36 | 418 | |
777c47ac | 419 | static int do_dsa_print(BIO *bp, const DSA *x, int off, int ptype) |
0f113f3e MC |
420 | { |
421 | unsigned char *m = NULL; | |
422 | int ret = 0; | |
423 | size_t buf_len = 0; | |
424 | const char *ktype = NULL; | |
425 | ||
426 | const BIGNUM *priv_key, *pub_key; | |
427 | ||
428 | if (ptype == 2) | |
429 | priv_key = x->priv_key; | |
430 | else | |
431 | priv_key = NULL; | |
432 | ||
433 | if (ptype > 0) | |
434 | pub_key = x->pub_key; | |
435 | else | |
436 | pub_key = NULL; | |
437 | ||
438 | if (ptype == 2) | |
439 | ktype = "Private-Key"; | |
440 | else if (ptype == 1) | |
441 | ktype = "Public-Key"; | |
442 | else | |
443 | ktype = "DSA-Parameters"; | |
444 | ||
445 | update_buflen(x->p, &buf_len); | |
446 | update_buflen(x->q, &buf_len); | |
447 | update_buflen(x->g, &buf_len); | |
448 | update_buflen(priv_key, &buf_len); | |
449 | update_buflen(pub_key, &buf_len); | |
450 | ||
b196e7d9 | 451 | m = OPENSSL_malloc(buf_len + 10); |
0f113f3e MC |
452 | if (m == NULL) { |
453 | DSAerr(DSA_F_DO_DSA_PRINT, ERR_R_MALLOC_FAILURE); | |
454 | goto err; | |
455 | } | |
456 | ||
457 | if (priv_key) { | |
458 | if (!BIO_indent(bp, off, 128)) | |
459 | goto err; | |
460 | if (BIO_printf(bp, "%s: (%d bit)\n", ktype, BN_num_bits(x->p)) | |
461 | <= 0) | |
462 | goto err; | |
463 | } | |
464 | ||
465 | if (!ASN1_bn_print(bp, "priv:", priv_key, m, off)) | |
466 | goto err; | |
467 | if (!ASN1_bn_print(bp, "pub: ", pub_key, m, off)) | |
468 | goto err; | |
469 | if (!ASN1_bn_print(bp, "P: ", x->p, m, off)) | |
470 | goto err; | |
471 | if (!ASN1_bn_print(bp, "Q: ", x->q, m, off)) | |
472 | goto err; | |
473 | if (!ASN1_bn_print(bp, "G: ", x->g, m, off)) | |
474 | goto err; | |
475 | ret = 1; | |
476 | err: | |
477 | if (m != NULL) | |
478 | OPENSSL_free(m); | |
479 | return (ret); | |
480 | } | |
35208f36 | 481 | |
3e4585c8 | 482 | static int dsa_param_decode(EVP_PKEY *pkey, |
0f113f3e MC |
483 | const unsigned char **pder, int derlen) |
484 | { | |
485 | DSA *dsa; | |
486 | if (!(dsa = d2i_DSAparams(NULL, pder, derlen))) { | |
487 | DSAerr(DSA_F_DSA_PARAM_DECODE, ERR_R_DSA_LIB); | |
488 | return 0; | |
489 | } | |
490 | EVP_PKEY_assign_DSA(pkey, dsa); | |
491 | return 1; | |
492 | } | |
3e4585c8 DSH |
493 | |
494 | static int dsa_param_encode(const EVP_PKEY *pkey, unsigned char **pder) | |
0f113f3e MC |
495 | { |
496 | return i2d_DSAparams(pkey->pkey.dsa, pder); | |
497 | } | |
35208f36 DSH |
498 | |
499 | static int dsa_param_print(BIO *bp, const EVP_PKEY *pkey, int indent, | |
0f113f3e MC |
500 | ASN1_PCTX *ctx) |
501 | { | |
502 | return do_dsa_print(bp, pkey->pkey.dsa, indent, 0); | |
503 | } | |
35208f36 DSH |
504 | |
505 | static int dsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent, | |
0f113f3e MC |
506 | ASN1_PCTX *ctx) |
507 | { | |
508 | return do_dsa_print(bp, pkey->pkey.dsa, indent, 1); | |
509 | } | |
35208f36 DSH |
510 | |
511 | static int dsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent, | |
0f113f3e MC |
512 | ASN1_PCTX *ctx) |
513 | { | |
514 | return do_dsa_print(bp, pkey->pkey.dsa, indent, 2); | |
515 | } | |
35208f36 | 516 | |
e4263314 | 517 | static int old_dsa_priv_decode(EVP_PKEY *pkey, |
0f113f3e MC |
518 | const unsigned char **pder, int derlen) |
519 | { | |
520 | DSA *dsa; | |
521 | if (!(dsa = d2i_DSAPrivateKey(NULL, pder, derlen))) { | |
522 | DSAerr(DSA_F_OLD_DSA_PRIV_DECODE, ERR_R_DSA_LIB); | |
523 | return 0; | |
524 | } | |
525 | EVP_PKEY_assign_DSA(pkey, dsa); | |
526 | return 1; | |
527 | } | |
e4263314 DSH |
528 | |
529 | static int old_dsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder) | |
0f113f3e MC |
530 | { |
531 | return i2d_DSAPrivateKey(pkey->pkey.dsa, pder); | |
532 | } | |
e4263314 | 533 | |
fa1ba589 | 534 | static int dsa_sig_print(BIO *bp, const X509_ALGOR *sigalg, |
0f113f3e MC |
535 | const ASN1_STRING *sig, int indent, ASN1_PCTX *pctx) |
536 | { | |
537 | DSA_SIG *dsa_sig; | |
538 | const unsigned char *p; | |
539 | if (!sig) { | |
540 | if (BIO_puts(bp, "\n") <= 0) | |
541 | return 0; | |
542 | else | |
543 | return 1; | |
544 | } | |
545 | p = sig->data; | |
546 | dsa_sig = d2i_DSA_SIG(NULL, &p, sig->length); | |
547 | if (dsa_sig) { | |
548 | int rv = 0; | |
549 | size_t buf_len = 0; | |
550 | unsigned char *m = NULL; | |
551 | update_buflen(dsa_sig->r, &buf_len); | |
552 | update_buflen(dsa_sig->s, &buf_len); | |
553 | m = OPENSSL_malloc(buf_len + 10); | |
554 | if (m == NULL) { | |
555 | DSAerr(DSA_F_DSA_SIG_PRINT, ERR_R_MALLOC_FAILURE); | |
556 | goto err; | |
557 | } | |
558 | ||
559 | if (BIO_write(bp, "\n", 1) != 1) | |
560 | goto err; | |
561 | ||
562 | if (!ASN1_bn_print(bp, "r: ", dsa_sig->r, m, indent)) | |
563 | goto err; | |
564 | if (!ASN1_bn_print(bp, "s: ", dsa_sig->s, m, indent)) | |
565 | goto err; | |
566 | rv = 1; | |
567 | err: | |
568 | if (m) | |
569 | OPENSSL_free(m); | |
570 | DSA_SIG_free(dsa_sig); | |
571 | return rv; | |
572 | } | |
573 | return X509_signature_dump(bp, sig, indent); | |
574 | } | |
fa1ba589 | 575 | |
492a9e24 | 576 | static int dsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2) |
0f113f3e MC |
577 | { |
578 | switch (op) { | |
579 | case ASN1_PKEY_CTRL_PKCS7_SIGN: | |
580 | if (arg1 == 0) { | |
581 | int snid, hnid; | |
582 | X509_ALGOR *alg1, *alg2; | |
583 | PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, &alg1, &alg2); | |
584 | if (alg1 == NULL || alg1->algorithm == NULL) | |
585 | return -1; | |
586 | hnid = OBJ_obj2nid(alg1->algorithm); | |
587 | if (hnid == NID_undef) | |
588 | return -1; | |
589 | if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey))) | |
590 | return -1; | |
591 | X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0); | |
592 | } | |
593 | return 1; | |
8931b30d | 594 | #ifndef OPENSSL_NO_CMS |
0f113f3e MC |
595 | case ASN1_PKEY_CTRL_CMS_SIGN: |
596 | if (arg1 == 0) { | |
597 | int snid, hnid; | |
598 | X509_ALGOR *alg1, *alg2; | |
599 | CMS_SignerInfo_get0_algs(arg2, NULL, NULL, &alg1, &alg2); | |
600 | if (alg1 == NULL || alg1->algorithm == NULL) | |
601 | return -1; | |
602 | hnid = OBJ_obj2nid(alg1->algorithm); | |
603 | if (hnid == NID_undef) | |
604 | return -1; | |
605 | if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey))) | |
606 | return -1; | |
607 | X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0); | |
608 | } | |
609 | return 1; | |
610 | ||
611 | case ASN1_PKEY_CTRL_CMS_RI_TYPE: | |
612 | *(int *)arg2 = CMS_RECIPINFO_NONE; | |
613 | return 1; | |
8931b30d | 614 | #endif |
492a9e24 | 615 | |
0f113f3e MC |
616 | case ASN1_PKEY_CTRL_DEFAULT_MD_NID: |
617 | *(int *)arg2 = NID_sha256; | |
618 | return 2; | |
03919683 | 619 | |
0f113f3e MC |
620 | default: |
621 | return -2; | |
492a9e24 | 622 | |
0f113f3e | 623 | } |
492a9e24 | 624 | |
0f113f3e | 625 | } |
492a9e24 | 626 | |
448be743 DSH |
627 | /* NB these are sorted in pkey_id order, lowest first */ |
628 | ||
0f113f3e MC |
629 | const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[] = { |
630 | ||
631 | { | |
632 | EVP_PKEY_DSA2, | |
633 | EVP_PKEY_DSA, | |
634 | ASN1_PKEY_ALIAS}, | |
635 | ||
636 | { | |
637 | EVP_PKEY_DSA1, | |
638 | EVP_PKEY_DSA, | |
639 | ASN1_PKEY_ALIAS}, | |
640 | ||
641 | { | |
642 | EVP_PKEY_DSA4, | |
643 | EVP_PKEY_DSA, | |
644 | ASN1_PKEY_ALIAS}, | |
645 | ||
646 | { | |
647 | EVP_PKEY_DSA3, | |
648 | EVP_PKEY_DSA, | |
649 | ASN1_PKEY_ALIAS}, | |
650 | ||
651 | { | |
652 | EVP_PKEY_DSA, | |
653 | EVP_PKEY_DSA, | |
654 | 0, | |
655 | ||
656 | "DSA", | |
657 | "OpenSSL DSA method", | |
658 | ||
659 | dsa_pub_decode, | |
660 | dsa_pub_encode, | |
661 | dsa_pub_cmp, | |
662 | dsa_pub_print, | |
663 | ||
664 | dsa_priv_decode, | |
665 | dsa_priv_encode, | |
666 | dsa_priv_print, | |
667 | ||
668 | int_dsa_size, | |
669 | dsa_bits, | |
670 | dsa_security_bits, | |
671 | ||
672 | dsa_param_decode, | |
673 | dsa_param_encode, | |
674 | dsa_missing_parameters, | |
675 | dsa_copy_parameters, | |
676 | dsa_cmp_parameters, | |
677 | dsa_param_print, | |
678 | dsa_sig_print, | |
679 | ||
680 | int_dsa_free, | |
681 | dsa_pkey_ctrl, | |
682 | old_dsa_priv_decode, | |
683 | old_dsa_priv_encode} | |
684 | }; |