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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 |
18e377b4 | 68 | #include "asn1_locl.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: | |
121 | if (public_key) | |
122 | ASN1_INTEGER_free(public_key); | |
123 | if (dsa) | |
124 | DSA_free(dsa); | |
125 | return 0; | |
126 | ||
127 | } | |
448be743 | 128 | |
6f81892e | 129 | static int dsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey) |
0f113f3e MC |
130 | { |
131 | DSA *dsa; | |
0f113f3e MC |
132 | int ptype; |
133 | unsigned char *penc = NULL; | |
134 | int penclen; | |
0c7ca403 | 135 | ASN1_STRING *str = NULL; |
0f113f3e MC |
136 | |
137 | dsa = pkey->pkey.dsa; | |
138 | if (pkey->save_parameters && dsa->p && dsa->q && dsa->g) { | |
0f113f3e | 139 | str = ASN1_STRING_new(); |
0c7ca403 MC |
140 | if (!str) { |
141 | DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE); | |
142 | goto err; | |
143 | } | |
0f113f3e MC |
144 | str->length = i2d_DSAparams(dsa, &str->data); |
145 | if (str->length <= 0) { | |
146 | DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE); | |
147 | goto err; | |
148 | } | |
0f113f3e MC |
149 | ptype = V_ASN1_SEQUENCE; |
150 | } else | |
151 | ptype = V_ASN1_UNDEF; | |
152 | ||
153 | dsa->write_params = 0; | |
154 | ||
155 | penclen = i2d_DSAPublicKey(dsa, &penc); | |
156 | ||
157 | if (penclen <= 0) { | |
158 | DSAerr(DSA_F_DSA_PUB_ENCODE, ERR_R_MALLOC_FAILURE); | |
159 | goto err; | |
160 | } | |
161 | ||
162 | if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_DSA), | |
0c7ca403 | 163 | ptype, str, penc, penclen)) |
0f113f3e MC |
164 | return 1; |
165 | ||
166 | err: | |
167 | if (penc) | |
168 | OPENSSL_free(penc); | |
0dfb9398 | 169 | ASN1_STRING_free(str); |
0f113f3e MC |
170 | |
171 | return 0; | |
172 | } | |
173 | ||
174 | /* | |
175 | * In PKCS#8 DSA: you just get a private key integer and parameters in the | |
448be743 DSH |
176 | * AlgorithmIdentifier the pubkey must be recalculated. |
177 | */ | |
0f113f3e | 178 | |
448be743 | 179 | static int dsa_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8) |
0f113f3e MC |
180 | { |
181 | const unsigned char *p, *pm; | |
182 | int pklen, pmlen; | |
183 | int ptype; | |
184 | void *pval; | |
185 | ASN1_STRING *pstr; | |
186 | X509_ALGOR *palg; | |
187 | ASN1_INTEGER *privkey = NULL; | |
188 | BN_CTX *ctx = NULL; | |
189 | ||
190 | STACK_OF(ASN1_TYPE) *ndsa = NULL; | |
191 | DSA *dsa = NULL; | |
192 | ||
193 | if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8)) | |
194 | return 0; | |
195 | X509_ALGOR_get0(NULL, &ptype, &pval, palg); | |
196 | ||
197 | /* Check for broken DSA PKCS#8, UGH! */ | |
198 | if (*p == (V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED)) { | |
199 | ASN1_TYPE *t1, *t2; | |
200 | if (!(ndsa = d2i_ASN1_SEQUENCE_ANY(NULL, &p, pklen))) | |
201 | goto decerr; | |
202 | if (sk_ASN1_TYPE_num(ndsa) != 2) | |
203 | goto decerr; | |
50e735f9 MC |
204 | /*- |
205 | * Handle Two broken types: | |
206 | * SEQUENCE {parameters, priv_key} | |
207 | * SEQUENCE {pub_key, priv_key} | |
208 | */ | |
0f113f3e MC |
209 | |
210 | t1 = sk_ASN1_TYPE_value(ndsa, 0); | |
211 | t2 = sk_ASN1_TYPE_value(ndsa, 1); | |
212 | if (t1->type == V_ASN1_SEQUENCE) { | |
213 | p8->broken = PKCS8_EMBEDDED_PARAM; | |
214 | pval = t1->value.ptr; | |
215 | } else if (ptype == V_ASN1_SEQUENCE) | |
216 | p8->broken = PKCS8_NS_DB; | |
217 | else | |
218 | goto decerr; | |
219 | ||
220 | if (t2->type != V_ASN1_INTEGER) | |
221 | goto decerr; | |
222 | ||
223 | privkey = t2->value.integer; | |
224 | } else { | |
225 | const unsigned char *q = p; | |
226 | if (!(privkey = d2i_ASN1_INTEGER(NULL, &p, pklen))) | |
227 | goto decerr; | |
228 | if (privkey->type == V_ASN1_NEG_INTEGER) { | |
229 | p8->broken = PKCS8_NEG_PRIVKEY; | |
a8ae0891 | 230 | ASN1_STRING_clear_free(privkey); |
0f113f3e MC |
231 | if (!(privkey = d2i_ASN1_UINTEGER(NULL, &q, pklen))) |
232 | goto decerr; | |
233 | } | |
234 | if (ptype != V_ASN1_SEQUENCE) | |
235 | goto decerr; | |
236 | } | |
237 | ||
238 | pstr = pval; | |
239 | pm = pstr->data; | |
240 | pmlen = pstr->length; | |
241 | if (!(dsa = d2i_DSAparams(NULL, &pm, pmlen))) | |
242 | goto decerr; | |
243 | /* We have parameters now set private key */ | |
244 | if (!(dsa->priv_key = ASN1_INTEGER_to_BN(privkey, NULL))) { | |
245 | DSAerr(DSA_F_DSA_PRIV_DECODE, DSA_R_BN_ERROR); | |
246 | goto dsaerr; | |
247 | } | |
248 | /* Calculate public key */ | |
249 | if (!(dsa->pub_key = BN_new())) { | |
250 | DSAerr(DSA_F_DSA_PRIV_DECODE, ERR_R_MALLOC_FAILURE); | |
251 | goto dsaerr; | |
252 | } | |
253 | if (!(ctx = BN_CTX_new())) { | |
254 | DSAerr(DSA_F_DSA_PRIV_DECODE, ERR_R_MALLOC_FAILURE); | |
255 | goto dsaerr; | |
256 | } | |
257 | ||
258 | if (!BN_mod_exp(dsa->pub_key, dsa->g, dsa->priv_key, dsa->p, ctx)) { | |
259 | DSAerr(DSA_F_DSA_PRIV_DECODE, DSA_R_BN_ERROR); | |
260 | goto dsaerr; | |
261 | } | |
262 | ||
263 | EVP_PKEY_assign_DSA(pkey, dsa); | |
264 | BN_CTX_free(ctx); | |
265 | if (ndsa) | |
266 | sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free); | |
267 | else | |
a8ae0891 | 268 | ASN1_STRING_clear_free(privkey); |
0f113f3e MC |
269 | |
270 | return 1; | |
271 | ||
272 | decerr: | |
273 | DSAerr(DSA_F_DSA_PRIV_DECODE, EVP_R_DECODE_ERROR); | |
274 | dsaerr: | |
275 | BN_CTX_free(ctx); | |
276 | if (privkey) | |
a8ae0891 | 277 | ASN1_STRING_clear_free(privkey); |
0f113f3e MC |
278 | sk_ASN1_TYPE_pop_free(ndsa, ASN1_TYPE_free); |
279 | DSA_free(dsa); | |
280 | return 0; | |
281 | } | |
448be743 | 282 | |
6f81892e | 283 | static int dsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey) |
448be743 | 284 | { |
0f113f3e MC |
285 | ASN1_STRING *params = NULL; |
286 | ASN1_INTEGER *prkey = NULL; | |
287 | unsigned char *dp = NULL; | |
288 | int dplen; | |
289 | ||
290 | if (!pkey->pkey.dsa || !pkey->pkey.dsa->priv_key) { | |
291 | DSAerr(DSA_F_DSA_PRIV_ENCODE, DSA_R_MISSING_PARAMETERS); | |
292 | goto err; | |
293 | } | |
294 | ||
295 | params = ASN1_STRING_new(); | |
296 | ||
297 | if (!params) { | |
298 | DSAerr(DSA_F_DSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE); | |
299 | goto err; | |
300 | } | |
301 | ||
302 | params->length = i2d_DSAparams(pkey->pkey.dsa, ¶ms->data); | |
303 | if (params->length <= 0) { | |
304 | DSAerr(DSA_F_DSA_PRIV_ENCODE, ERR_R_MALLOC_FAILURE); | |
305 | goto err; | |
306 | } | |
307 | params->type = V_ASN1_SEQUENCE; | |
308 | ||
309 | /* Get private key into integer */ | |
310 | prkey = BN_to_ASN1_INTEGER(pkey->pkey.dsa->priv_key, NULL); | |
311 | ||
312 | if (!prkey) { | |
313 | DSAerr(DSA_F_DSA_PRIV_ENCODE, DSA_R_BN_ERROR); | |
314 | goto err; | |
315 | } | |
316 | ||
317 | dplen = i2d_ASN1_INTEGER(prkey, &dp); | |
318 | ||
a8ae0891 | 319 | ASN1_STRING_clear_free(prkey); |
0f113f3e MC |
320 | |
321 | if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_dsa), 0, | |
322 | V_ASN1_SEQUENCE, params, dp, dplen)) | |
323 | goto err; | |
324 | ||
325 | return 1; | |
326 | ||
327 | err: | |
328 | if (dp != NULL) | |
329 | OPENSSL_free(dp); | |
0dfb9398 | 330 | ASN1_STRING_free(params); |
0f113f3e | 331 | if (prkey != NULL) |
a8ae0891 | 332 | ASN1_STRING_clear_free(prkey); |
0f113f3e | 333 | return 0; |
448be743 DSH |
334 | } |
335 | ||
6f81892e | 336 | static int int_dsa_size(const EVP_PKEY *pkey) |
0f113f3e MC |
337 | { |
338 | return (DSA_size(pkey->pkey.dsa)); | |
339 | } | |
6f81892e DSH |
340 | |
341 | static int dsa_bits(const EVP_PKEY *pkey) | |
0f113f3e MC |
342 | { |
343 | return BN_num_bits(pkey->pkey.dsa->p); | |
344 | } | |
6f81892e | 345 | |
2514fa79 | 346 | static int dsa_security_bits(const EVP_PKEY *pkey) |
0f113f3e MC |
347 | { |
348 | return DSA_security_bits(pkey->pkey.dsa); | |
349 | } | |
2514fa79 | 350 | |
6f81892e | 351 | static int dsa_missing_parameters(const EVP_PKEY *pkey) |
0f113f3e MC |
352 | { |
353 | DSA *dsa; | |
354 | dsa = pkey->pkey.dsa; | |
355 | if ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL)) | |
356 | return 1; | |
357 | return 0; | |
358 | } | |
6f81892e DSH |
359 | |
360 | static int dsa_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) | |
0f113f3e MC |
361 | { |
362 | BIGNUM *a; | |
363 | ||
364 | if ((a = BN_dup(from->pkey.dsa->p)) == NULL) | |
365 | return 0; | |
366 | if (to->pkey.dsa->p != NULL) | |
367 | BN_free(to->pkey.dsa->p); | |
368 | to->pkey.dsa->p = a; | |
369 | ||
370 | if ((a = BN_dup(from->pkey.dsa->q)) == NULL) | |
371 | return 0; | |
372 | if (to->pkey.dsa->q != NULL) | |
373 | BN_free(to->pkey.dsa->q); | |
374 | to->pkey.dsa->q = a; | |
375 | ||
376 | if ((a = BN_dup(from->pkey.dsa->g)) == NULL) | |
377 | return 0; | |
378 | if (to->pkey.dsa->g != NULL) | |
379 | BN_free(to->pkey.dsa->g); | |
380 | to->pkey.dsa->g = a; | |
381 | return 1; | |
382 | } | |
6f81892e DSH |
383 | |
384 | static int dsa_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) | |
0f113f3e MC |
385 | { |
386 | if (BN_cmp(a->pkey.dsa->p, b->pkey.dsa->p) || | |
387 | BN_cmp(a->pkey.dsa->q, b->pkey.dsa->q) || | |
388 | BN_cmp(a->pkey.dsa->g, b->pkey.dsa->g)) | |
389 | return 0; | |
390 | else | |
391 | return 1; | |
392 | } | |
6f81892e | 393 | |
0cb8499b | 394 | static int dsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) |
0f113f3e MC |
395 | { |
396 | if (BN_cmp(b->pkey.dsa->pub_key, a->pkey.dsa->pub_key) != 0) | |
397 | return 0; | |
398 | else | |
399 | return 1; | |
400 | } | |
0cb8499b | 401 | |
6f81892e | 402 | static void int_dsa_free(EVP_PKEY *pkey) |
0f113f3e MC |
403 | { |
404 | DSA_free(pkey->pkey.dsa); | |
405 | } | |
6f81892e | 406 | |
35208f36 | 407 | static void update_buflen(const BIGNUM *b, size_t *pbuflen) |
0f113f3e MC |
408 | { |
409 | size_t i; | |
410 | if (!b) | |
411 | return; | |
412 | if (*pbuflen < (i = (size_t)BN_num_bytes(b))) | |
413 | *pbuflen = i; | |
414 | } | |
35208f36 | 415 | |
777c47ac | 416 | static int do_dsa_print(BIO *bp, const DSA *x, int off, int ptype) |
0f113f3e MC |
417 | { |
418 | unsigned char *m = NULL; | |
419 | int ret = 0; | |
420 | size_t buf_len = 0; | |
421 | const char *ktype = NULL; | |
422 | ||
423 | const BIGNUM *priv_key, *pub_key; | |
424 | ||
425 | if (ptype == 2) | |
426 | priv_key = x->priv_key; | |
427 | else | |
428 | priv_key = NULL; | |
429 | ||
430 | if (ptype > 0) | |
431 | pub_key = x->pub_key; | |
432 | else | |
433 | pub_key = NULL; | |
434 | ||
435 | if (ptype == 2) | |
436 | ktype = "Private-Key"; | |
437 | else if (ptype == 1) | |
438 | ktype = "Public-Key"; | |
439 | else | |
440 | ktype = "DSA-Parameters"; | |
441 | ||
442 | update_buflen(x->p, &buf_len); | |
443 | update_buflen(x->q, &buf_len); | |
444 | update_buflen(x->g, &buf_len); | |
445 | update_buflen(priv_key, &buf_len); | |
446 | update_buflen(pub_key, &buf_len); | |
447 | ||
448 | m = (unsigned char *)OPENSSL_malloc(buf_len + 10); | |
449 | if (m == NULL) { | |
450 | DSAerr(DSA_F_DO_DSA_PRINT, ERR_R_MALLOC_FAILURE); | |
451 | goto err; | |
452 | } | |
453 | ||
454 | if (priv_key) { | |
455 | if (!BIO_indent(bp, off, 128)) | |
456 | goto err; | |
457 | if (BIO_printf(bp, "%s: (%d bit)\n", ktype, BN_num_bits(x->p)) | |
458 | <= 0) | |
459 | goto err; | |
460 | } | |
461 | ||
462 | if (!ASN1_bn_print(bp, "priv:", priv_key, m, off)) | |
463 | goto err; | |
464 | if (!ASN1_bn_print(bp, "pub: ", pub_key, m, off)) | |
465 | goto err; | |
466 | if (!ASN1_bn_print(bp, "P: ", x->p, m, off)) | |
467 | goto err; | |
468 | if (!ASN1_bn_print(bp, "Q: ", x->q, m, off)) | |
469 | goto err; | |
470 | if (!ASN1_bn_print(bp, "G: ", x->g, m, off)) | |
471 | goto err; | |
472 | ret = 1; | |
473 | err: | |
474 | if (m != NULL) | |
475 | OPENSSL_free(m); | |
476 | return (ret); | |
477 | } | |
35208f36 | 478 | |
3e4585c8 | 479 | static int dsa_param_decode(EVP_PKEY *pkey, |
0f113f3e MC |
480 | const unsigned char **pder, int derlen) |
481 | { | |
482 | DSA *dsa; | |
483 | if (!(dsa = d2i_DSAparams(NULL, pder, derlen))) { | |
484 | DSAerr(DSA_F_DSA_PARAM_DECODE, ERR_R_DSA_LIB); | |
485 | return 0; | |
486 | } | |
487 | EVP_PKEY_assign_DSA(pkey, dsa); | |
488 | return 1; | |
489 | } | |
3e4585c8 DSH |
490 | |
491 | static int dsa_param_encode(const EVP_PKEY *pkey, unsigned char **pder) | |
0f113f3e MC |
492 | { |
493 | return i2d_DSAparams(pkey->pkey.dsa, pder); | |
494 | } | |
35208f36 DSH |
495 | |
496 | static int dsa_param_print(BIO *bp, const EVP_PKEY *pkey, int indent, | |
0f113f3e MC |
497 | ASN1_PCTX *ctx) |
498 | { | |
499 | return do_dsa_print(bp, pkey->pkey.dsa, indent, 0); | |
500 | } | |
35208f36 DSH |
501 | |
502 | static int dsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent, | |
0f113f3e MC |
503 | ASN1_PCTX *ctx) |
504 | { | |
505 | return do_dsa_print(bp, pkey->pkey.dsa, indent, 1); | |
506 | } | |
35208f36 DSH |
507 | |
508 | static int dsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent, | |
0f113f3e MC |
509 | ASN1_PCTX *ctx) |
510 | { | |
511 | return do_dsa_print(bp, pkey->pkey.dsa, indent, 2); | |
512 | } | |
35208f36 | 513 | |
e4263314 | 514 | static int old_dsa_priv_decode(EVP_PKEY *pkey, |
0f113f3e MC |
515 | const unsigned char **pder, int derlen) |
516 | { | |
517 | DSA *dsa; | |
518 | if (!(dsa = d2i_DSAPrivateKey(NULL, pder, derlen))) { | |
519 | DSAerr(DSA_F_OLD_DSA_PRIV_DECODE, ERR_R_DSA_LIB); | |
520 | return 0; | |
521 | } | |
522 | EVP_PKEY_assign_DSA(pkey, dsa); | |
523 | return 1; | |
524 | } | |
e4263314 DSH |
525 | |
526 | static int old_dsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder) | |
0f113f3e MC |
527 | { |
528 | return i2d_DSAPrivateKey(pkey->pkey.dsa, pder); | |
529 | } | |
e4263314 | 530 | |
fa1ba589 | 531 | static int dsa_sig_print(BIO *bp, const X509_ALGOR *sigalg, |
0f113f3e MC |
532 | const ASN1_STRING *sig, int indent, ASN1_PCTX *pctx) |
533 | { | |
534 | DSA_SIG *dsa_sig; | |
535 | const unsigned char *p; | |
536 | if (!sig) { | |
537 | if (BIO_puts(bp, "\n") <= 0) | |
538 | return 0; | |
539 | else | |
540 | return 1; | |
541 | } | |
542 | p = sig->data; | |
543 | dsa_sig = d2i_DSA_SIG(NULL, &p, sig->length); | |
544 | if (dsa_sig) { | |
545 | int rv = 0; | |
546 | size_t buf_len = 0; | |
547 | unsigned char *m = NULL; | |
548 | update_buflen(dsa_sig->r, &buf_len); | |
549 | update_buflen(dsa_sig->s, &buf_len); | |
550 | m = OPENSSL_malloc(buf_len + 10); | |
551 | if (m == NULL) { | |
552 | DSAerr(DSA_F_DSA_SIG_PRINT, ERR_R_MALLOC_FAILURE); | |
553 | goto err; | |
554 | } | |
555 | ||
556 | if (BIO_write(bp, "\n", 1) != 1) | |
557 | goto err; | |
558 | ||
559 | if (!ASN1_bn_print(bp, "r: ", dsa_sig->r, m, indent)) | |
560 | goto err; | |
561 | if (!ASN1_bn_print(bp, "s: ", dsa_sig->s, m, indent)) | |
562 | goto err; | |
563 | rv = 1; | |
564 | err: | |
565 | if (m) | |
566 | OPENSSL_free(m); | |
567 | DSA_SIG_free(dsa_sig); | |
568 | return rv; | |
569 | } | |
570 | return X509_signature_dump(bp, sig, indent); | |
571 | } | |
fa1ba589 | 572 | |
492a9e24 | 573 | static int dsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2) |
0f113f3e MC |
574 | { |
575 | switch (op) { | |
576 | case ASN1_PKEY_CTRL_PKCS7_SIGN: | |
577 | if (arg1 == 0) { | |
578 | int snid, hnid; | |
579 | X509_ALGOR *alg1, *alg2; | |
580 | PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, &alg1, &alg2); | |
581 | if (alg1 == NULL || alg1->algorithm == NULL) | |
582 | return -1; | |
583 | hnid = OBJ_obj2nid(alg1->algorithm); | |
584 | if (hnid == NID_undef) | |
585 | return -1; | |
586 | if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey))) | |
587 | return -1; | |
588 | X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0); | |
589 | } | |
590 | return 1; | |
8931b30d | 591 | #ifndef OPENSSL_NO_CMS |
0f113f3e MC |
592 | case ASN1_PKEY_CTRL_CMS_SIGN: |
593 | if (arg1 == 0) { | |
594 | int snid, hnid; | |
595 | X509_ALGOR *alg1, *alg2; | |
596 | CMS_SignerInfo_get0_algs(arg2, NULL, NULL, &alg1, &alg2); | |
597 | if (alg1 == NULL || alg1->algorithm == NULL) | |
598 | return -1; | |
599 | hnid = OBJ_obj2nid(alg1->algorithm); | |
600 | if (hnid == NID_undef) | |
601 | return -1; | |
602 | if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey))) | |
603 | return -1; | |
604 | X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0); | |
605 | } | |
606 | return 1; | |
607 | ||
608 | case ASN1_PKEY_CTRL_CMS_RI_TYPE: | |
609 | *(int *)arg2 = CMS_RECIPINFO_NONE; | |
610 | return 1; | |
8931b30d | 611 | #endif |
492a9e24 | 612 | |
0f113f3e MC |
613 | case ASN1_PKEY_CTRL_DEFAULT_MD_NID: |
614 | *(int *)arg2 = NID_sha256; | |
615 | return 2; | |
03919683 | 616 | |
0f113f3e MC |
617 | default: |
618 | return -2; | |
492a9e24 | 619 | |
0f113f3e | 620 | } |
492a9e24 | 621 | |
0f113f3e | 622 | } |
492a9e24 | 623 | |
448be743 DSH |
624 | /* NB these are sorted in pkey_id order, lowest first */ |
625 | ||
0f113f3e MC |
626 | const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[] = { |
627 | ||
628 | { | |
629 | EVP_PKEY_DSA2, | |
630 | EVP_PKEY_DSA, | |
631 | ASN1_PKEY_ALIAS}, | |
632 | ||
633 | { | |
634 | EVP_PKEY_DSA1, | |
635 | EVP_PKEY_DSA, | |
636 | ASN1_PKEY_ALIAS}, | |
637 | ||
638 | { | |
639 | EVP_PKEY_DSA4, | |
640 | EVP_PKEY_DSA, | |
641 | ASN1_PKEY_ALIAS}, | |
642 | ||
643 | { | |
644 | EVP_PKEY_DSA3, | |
645 | EVP_PKEY_DSA, | |
646 | ASN1_PKEY_ALIAS}, | |
647 | ||
648 | { | |
649 | EVP_PKEY_DSA, | |
650 | EVP_PKEY_DSA, | |
651 | 0, | |
652 | ||
653 | "DSA", | |
654 | "OpenSSL DSA method", | |
655 | ||
656 | dsa_pub_decode, | |
657 | dsa_pub_encode, | |
658 | dsa_pub_cmp, | |
659 | dsa_pub_print, | |
660 | ||
661 | dsa_priv_decode, | |
662 | dsa_priv_encode, | |
663 | dsa_priv_print, | |
664 | ||
665 | int_dsa_size, | |
666 | dsa_bits, | |
667 | dsa_security_bits, | |
668 | ||
669 | dsa_param_decode, | |
670 | dsa_param_encode, | |
671 | dsa_missing_parameters, | |
672 | dsa_copy_parameters, | |
673 | dsa_cmp_parameters, | |
674 | dsa_param_print, | |
675 | dsa_sig_print, | |
676 | ||
677 | int_dsa_free, | |
678 | dsa_pkey_ctrl, | |
679 | old_dsa_priv_decode, | |
680 | old_dsa_priv_encode} | |
681 | }; |