1 /* $OpenBSD: dsa_ameth.c,v 1.28 2019/11/01 15:15:35 jsing Exp $ */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3  * project 2006.
4  */
5 /* ====================================================================
6  * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in
17  *    the documentation and/or other materials provided with the
18  *    distribution.
19  *
20  * 3. All advertising materials mentioning features or use of this
21  *    software must display the following acknowledgment:
22  *    "This product includes software developed by the OpenSSL Project
23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24  *
25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26  *    endorse or promote products derived from this software without
27  *    prior written permission. For written permission, please contact
28  *    licensing@OpenSSL.org.
29  *
30  * 5. Products derived from this software may not be called "OpenSSL"
31  *    nor may "OpenSSL" appear in their names without prior written
32  *    permission of the OpenSSL Project.
33  *
34  * 6. Redistributions of any form whatsoever must retain the following
35  *    acknowledgment:
36  *    "This product includes software developed by the OpenSSL Project
37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38  *
39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50  * OF THE POSSIBILITY OF SUCH DAMAGE.
51  * ====================================================================
52  *
53  * This product includes cryptographic software written by Eric Young
54  * (eay@cryptsoft.com).  This product includes software written by Tim
55  * Hudson (tjh@cryptsoft.com).
56  *
57  */
58 
59 #include <stdio.h>
60 
61 #include <openssl/opensslconf.h>
62 
63 #include <openssl/asn1.h>
64 #include <openssl/bn.h>
65 #include <openssl/cms.h>
66 #include <openssl/dsa.h>
67 #include <openssl/err.h>
68 #include <openssl/x509.h>
69 
70 #include "asn1_locl.h"
71 #include "bn_lcl.h"
72 
73 static int
74 dsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey)
75 {
76 	const unsigned char *p, *pm;
77 	int pklen, pmlen;
78 	int ptype;
79 	const void *pval;
80 	const ASN1_STRING *pstr;
81 	X509_ALGOR *palg;
82 	ASN1_INTEGER *public_key = NULL;
83 
84 	DSA *dsa = NULL;
85 
86 	if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey))
87 		return 0;
88 	X509_ALGOR_get0(NULL, &ptype, &pval, palg);
89 
90 	if (ptype == V_ASN1_SEQUENCE) {
91 		pstr = pval;
92 		pm = pstr->data;
93 		pmlen = pstr->length;
94 
95 		if (!(dsa = d2i_DSAparams(NULL, &pm, pmlen))) {
96 			DSAerror(DSA_R_DECODE_ERROR);
97 			goto err;
98 		}
99 	} else if (ptype == V_ASN1_NULL || ptype == V_ASN1_UNDEF) {
100 		if (!(dsa = DSA_new())) {
101 			DSAerror(ERR_R_MALLOC_FAILURE);
102 			goto err;
103 			}
104 	} else {
105 		DSAerror(DSA_R_PARAMETER_ENCODING_ERROR);
106 		goto err;
107 	}
108 
109 	if (!(public_key=d2i_ASN1_INTEGER(NULL, &p, pklen))) {
110 		DSAerror(DSA_R_DECODE_ERROR);
111 		goto err;
112 	}
113 
114 	if (!(dsa->pub_key = ASN1_INTEGER_to_BN(public_key, NULL))) {
115 		DSAerror(DSA_R_BN_DECODE_ERROR);
116 		goto err;
117 	}
118 
119 	ASN1_INTEGER_free(public_key);
120 	EVP_PKEY_assign_DSA(pkey, dsa);
121 	return 1;
122 
123 err:
124 	if (public_key)
125 		ASN1_INTEGER_free(public_key);
126 	DSA_free(dsa);
127 	return 0;
128 }
129 
130 static int
131 dsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey)
132 {
133 	DSA *dsa;
134 	void *pval = NULL;
135 	int ptype;
136 	unsigned char *penc = NULL;
137 	int penclen;
138 
139 	dsa = pkey->pkey.dsa;
140 	if (pkey->save_parameters && dsa->p && dsa->q && dsa->g) {
141 		ASN1_STRING *str;
142 
143 		str = ASN1_STRING_new();
144 		if (str == NULL) {
145 			DSAerror(ERR_R_MALLOC_FAILURE);
146 			goto err;
147 		}
148 		str->length = i2d_DSAparams(dsa, &str->data);
149 		if (str->length <= 0) {
150 			DSAerror(ERR_R_MALLOC_FAILURE);
151 			ASN1_STRING_free(str);
152 			goto err;
153 		}
154 		pval = str;
155 		ptype = V_ASN1_SEQUENCE;
156 	} else
157 		ptype = V_ASN1_UNDEF;
158 
159 	dsa->write_params = 0;
160 
161 	penclen = i2d_DSAPublicKey(dsa, &penc);
162 
163 	if (penclen <= 0) {
164 		DSAerror(ERR_R_MALLOC_FAILURE);
165 		goto err;
166 	}
167 
168 	if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_DSA), ptype, pval,
169 	    penc, penclen))
170 		return 1;
171 
172 err:
173 	free(penc);
174 	ASN1_STRING_free(pval);
175 
176 	return 0;
177 }
178 
179 /* In PKCS#8 DSA: you just get a private key integer and parameters in the
180  * AlgorithmIdentifier the pubkey must be recalculated.
181  */
182 static int
183 dsa_priv_decode(EVP_PKEY *pkey, const PKCS8_PRIV_KEY_INFO *p8)
184 {
185 	const unsigned char *p, *pm;
186 	int pklen, pmlen;
187 	int ptype;
188 	const void *pval;
189 	const ASN1_STRING *pstr;
190 	const X509_ALGOR *palg;
191 	ASN1_INTEGER *privkey = NULL;
192 	BN_CTX *ctx = NULL;
193 	DSA *dsa = NULL;
194 
195 	int ret = 0;
196 
197 	if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8))
198 		return 0;
199 	X509_ALGOR_get0(NULL, &ptype, &pval, palg);
200 	if (ptype != V_ASN1_SEQUENCE)
201 		goto decerr;
202 
203 	if ((privkey = d2i_ASN1_INTEGER(NULL, &p, pklen)) == NULL)
204 		goto decerr;
205 	if (privkey->type == V_ASN1_NEG_INTEGER)
206 		goto decerr;
207 
208 	pstr = pval;
209 	pm = pstr->data;
210 	pmlen = pstr->length;
211 	if (!(dsa = d2i_DSAparams(NULL, &pm, pmlen)))
212 		goto decerr;
213 	/* We have parameters now set private key */
214 	if (!(dsa->priv_key = ASN1_INTEGER_to_BN(privkey, NULL))) {
215 		DSAerror(DSA_R_BN_ERROR);
216 		goto dsaerr;
217 	}
218 	/* Calculate public key */
219 	if (!(dsa->pub_key = BN_new())) {
220 		DSAerror(ERR_R_MALLOC_FAILURE);
221 		goto dsaerr;
222 	}
223 	if (!(ctx = BN_CTX_new())) {
224 		DSAerror(ERR_R_MALLOC_FAILURE);
225 		goto dsaerr;
226 	}
227 
228 	if (!BN_mod_exp_ct(dsa->pub_key, dsa->g, dsa->priv_key, dsa->p, ctx)) {
229 		DSAerror(DSA_R_BN_ERROR);
230 		goto dsaerr;
231 	}
232 
233 	if (!EVP_PKEY_assign_DSA(pkey, dsa))
234 		goto decerr;
235 
236 	ret = 1;
237 	goto done;
238 
239 decerr:
240 	DSAerror(DSA_R_DECODE_ERROR);
241 dsaerr:
242 	DSA_free(dsa);
243 done:
244 	BN_CTX_free(ctx);
245 	ASN1_INTEGER_free(privkey);
246 	return ret;
247 }
248 
249 static int
250 dsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey)
251 {
252 	ASN1_STRING *params = NULL;
253 	ASN1_INTEGER *prkey = NULL;
254 	unsigned char *dp = NULL;
255 	int dplen;
256 
257 	params = ASN1_STRING_new();
258 	if (!params) {
259 		DSAerror(ERR_R_MALLOC_FAILURE);
260 		goto err;
261 	}
262 
263 	params->length = i2d_DSAparams(pkey->pkey.dsa, &params->data);
264 	if (params->length <= 0) {
265 		DSAerror(ERR_R_MALLOC_FAILURE);
266 		goto err;
267 	}
268 	params->type = V_ASN1_SEQUENCE;
269 
270 	/* Get private key into integer */
271 	prkey = BN_to_ASN1_INTEGER(pkey->pkey.dsa->priv_key, NULL);
272 	if (!prkey) {
273 		DSAerror(DSA_R_BN_ERROR);
274 		goto err;
275 	}
276 
277 	dplen = i2d_ASN1_INTEGER(prkey, &dp);
278 
279 	ASN1_INTEGER_free(prkey);
280 	prkey = NULL;
281 
282 	if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_dsa), 0, V_ASN1_SEQUENCE,
283 	    params, dp, dplen))
284 		goto err;
285 
286 	return 1;
287 
288 err:
289 	free(dp);
290 	ASN1_STRING_free(params);
291 	ASN1_INTEGER_free(prkey);
292 	return 0;
293 }
294 
295 static int
296 int_dsa_size(const EVP_PKEY *pkey)
297 {
298 	return DSA_size(pkey->pkey.dsa);
299 }
300 
301 static int
302 dsa_bits(const EVP_PKEY *pkey)
303 {
304 	return BN_num_bits(pkey->pkey.dsa->p);
305 }
306 
307 static int
308 dsa_missing_parameters(const EVP_PKEY *pkey)
309 {
310 	DSA *dsa;
311 
312 	dsa = pkey->pkey.dsa;
313 	if (dsa->p == NULL || dsa->q == NULL || dsa->g == NULL)
314 		return 1;
315 	return 0;
316 }
317 
318 static int
319 dsa_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
320 {
321 	BIGNUM *a;
322 
323 	if ((a = BN_dup(from->pkey.dsa->p)) == NULL)
324 		return 0;
325 	BN_free(to->pkey.dsa->p);
326 	to->pkey.dsa->p = a;
327 
328 	if ((a = BN_dup(from->pkey.dsa->q)) == NULL)
329 		return 0;
330 	BN_free(to->pkey.dsa->q);
331 	to->pkey.dsa->q = a;
332 
333 	if ((a = BN_dup(from->pkey.dsa->g)) == NULL)
334 		return 0;
335 	BN_free(to->pkey.dsa->g);
336 	to->pkey.dsa->g = a;
337 	return 1;
338 }
339 
340 static int
341 dsa_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
342 {
343 	if (BN_cmp(a->pkey.dsa->p, b->pkey.dsa->p) ||
344 	    BN_cmp(a->pkey.dsa->q, b->pkey.dsa->q) ||
345 	    BN_cmp(a->pkey.dsa->g, b->pkey.dsa->g))
346 		return 0;
347 	else
348 		return 1;
349 }
350 
351 static int
352 dsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
353 {
354 	if (BN_cmp(b->pkey.dsa->pub_key, a->pkey.dsa->pub_key) != 0)
355 		return 0;
356 	else
357 		return 1;
358 }
359 
360 static void
361 int_dsa_free(EVP_PKEY *pkey)
362 {
363 	DSA_free(pkey->pkey.dsa);
364 }
365 
366 static void
367 update_buflen(const BIGNUM *b, size_t *pbuflen)
368 {
369 	size_t i;
370 
371 	if (!b)
372 		return;
373 	if (*pbuflen < (i = (size_t)BN_num_bytes(b)))
374 		*pbuflen = i;
375 }
376 
377 static int
378 do_dsa_print(BIO *bp, const DSA *x, int off, int ptype)
379 {
380 	unsigned char *m = NULL;
381 	int ret = 0;
382 	size_t buf_len = 0;
383 	const char *ktype = NULL;
384 	const BIGNUM *priv_key, *pub_key;
385 
386 	if (ptype == 2)
387 		priv_key = x->priv_key;
388 	else
389 		priv_key = NULL;
390 
391 	if (ptype > 0)
392 		pub_key = x->pub_key;
393 	else
394 		pub_key = NULL;
395 
396 	if (ptype == 2)
397 		ktype = "Private-Key";
398 	else if (ptype == 1)
399 		ktype = "Public-Key";
400 	else
401 		ktype = "DSA-Parameters";
402 
403 	update_buflen(x->p, &buf_len);
404 	update_buflen(x->q, &buf_len);
405 	update_buflen(x->g, &buf_len);
406 	update_buflen(priv_key, &buf_len);
407 	update_buflen(pub_key, &buf_len);
408 
409 	m = malloc(buf_len + 10);
410 	if (m == NULL) {
411 		DSAerror(ERR_R_MALLOC_FAILURE);
412 		goto err;
413 	}
414 
415 	if (priv_key) {
416 		if (!BIO_indent(bp, off, 128))
417 			goto err;
418 		if (BIO_printf(bp, "%s: (%d bit)\n", ktype,
419 		    BN_num_bits(x->p)) <= 0)
420 			goto err;
421 	}
422 
423 	if (!ASN1_bn_print(bp, "priv:", priv_key, m, off))
424 		goto err;
425 	if (!ASN1_bn_print(bp, "pub: ", pub_key, m, off))
426 		goto err;
427 	if (!ASN1_bn_print(bp, "P:   ", x->p, m, off))
428 		goto err;
429 	if (!ASN1_bn_print(bp, "Q:   ", x->q, m, off))
430 		goto err;
431 	if (!ASN1_bn_print(bp, "G:   ", x->g, m, off))
432 		goto err;
433 	ret = 1;
434 err:
435 	free(m);
436 	return(ret);
437 }
438 
439 static int
440 dsa_param_decode(EVP_PKEY *pkey, const unsigned char **pder, int derlen)
441 {
442 	DSA *dsa;
443 
444 	if (!(dsa = d2i_DSAparams(NULL, pder, derlen))) {
445 		DSAerror(ERR_R_DSA_LIB);
446 		return 0;
447 	}
448 	EVP_PKEY_assign_DSA(pkey, dsa);
449 	return 1;
450 }
451 
452 static int
453 dsa_param_encode(const EVP_PKEY *pkey, unsigned char **pder)
454 {
455 	return i2d_DSAparams(pkey->pkey.dsa, pder);
456 }
457 
458 static int
459 dsa_param_print(BIO *bp, const EVP_PKEY *pkey, int indent, ASN1_PCTX *ctx)
460 {
461 	return do_dsa_print(bp, pkey->pkey.dsa, indent, 0);
462 }
463 
464 static int
465 dsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent, ASN1_PCTX *ctx)
466 {
467 	return do_dsa_print(bp, pkey->pkey.dsa, indent, 1);
468 }
469 
470 static int
471 dsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent, ASN1_PCTX *ctx)
472 {
473 	return do_dsa_print(bp, pkey->pkey.dsa, indent, 2);
474 }
475 
476 static int
477 old_dsa_priv_decode(EVP_PKEY *pkey, const unsigned char **pder, int derlen)
478 {
479 	DSA *dsa;
480 	BN_CTX *ctx = NULL;
481 	BIGNUM *j, *p1, *newp1;
482 
483 	if (!(dsa = d2i_DSAPrivateKey(NULL, pder, derlen))) {
484 		DSAerror(ERR_R_DSA_LIB);
485 		return 0;
486 	}
487 
488 	ctx = BN_CTX_new();
489 	if (ctx == NULL)
490 		goto err;
491 
492 	/*
493 	 * Check that p and q are consistent with each other.
494 	 */
495 
496 	j = BN_CTX_get(ctx);
497 	p1 = BN_CTX_get(ctx);
498 	newp1 = BN_CTX_get(ctx);
499 	if (j == NULL || p1 == NULL || newp1 == NULL)
500 		goto err;
501 	/* p1 = p - 1 */
502 	if (BN_sub(p1, dsa->p, BN_value_one()) == 0)
503 		goto err;
504 	/* j = (p - 1) / q */
505 	if (BN_div_ct(j, NULL, p1, dsa->q, ctx) == 0)
506 		goto err;
507 	/* q * j should == p - 1 */
508 	if (BN_mul(newp1, dsa->q, j, ctx) == 0)
509 		goto err;
510 	if (BN_cmp(newp1, p1) != 0) {
511 		DSAerror(DSA_R_BAD_Q_VALUE);
512 		goto err;
513 	}
514 
515 	/*
516 	 * Check that q is not a composite number.
517 	 */
518 
519 	if (BN_is_prime_ex(dsa->q, BN_prime_checks, ctx, NULL) <= 0) {
520 		DSAerror(DSA_R_BAD_Q_VALUE);
521 		goto err;
522 	}
523 
524 	BN_CTX_free(ctx);
525 
526 	EVP_PKEY_assign_DSA(pkey, dsa);
527 	return 1;
528 
529  err:
530 	BN_CTX_free(ctx);
531 	DSA_free(dsa);
532 	return 0;
533 }
534 
535 static int
536 old_dsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder)
537 {
538 	return i2d_DSAPrivateKey(pkey->pkey.dsa, pder);
539 }
540 
541 static int
542 dsa_sig_print(BIO *bp, const X509_ALGOR *sigalg, const ASN1_STRING *sig,
543     int indent, ASN1_PCTX *pctx)
544 {
545 	DSA_SIG *dsa_sig;
546 	const unsigned char *p;
547 
548 	if (!sig) {
549 		if (BIO_puts(bp, "\n") <= 0)
550 			return 0;
551 		else
552 			return 1;
553 	}
554 	p = sig->data;
555 	dsa_sig = d2i_DSA_SIG(NULL, &p, sig->length);
556 	if (dsa_sig) {
557 		int rv = 0;
558 		size_t buf_len = 0;
559 		unsigned char *m = NULL;
560 
561 		update_buflen(dsa_sig->r, &buf_len);
562 		update_buflen(dsa_sig->s, &buf_len);
563 		m = malloc(buf_len + 10);
564 		if (m == NULL) {
565 			DSAerror(ERR_R_MALLOC_FAILURE);
566 			goto err;
567 		}
568 
569 		if (BIO_write(bp, "\n", 1) != 1)
570 			goto err;
571 
572 		if (!ASN1_bn_print(bp, "r:   ", dsa_sig->r, m, indent))
573 			goto err;
574 		if (!ASN1_bn_print(bp, "s:   ", dsa_sig->s, m, indent))
575 			goto err;
576 		rv = 1;
577 err:
578 		free(m);
579 		DSA_SIG_free(dsa_sig);
580 		return rv;
581 	}
582 	return X509_signature_dump(bp, sig, indent);
583 }
584 
585 static int
586 dsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
587 {
588 	switch (op) {
589 	case ASN1_PKEY_CTRL_PKCS7_SIGN:
590 		if (arg1 == 0) {
591 			int snid, hnid;
592 			X509_ALGOR *alg1, *alg2;
593 
594 			PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, &alg1, &alg2);
595 			if (alg1 == NULL || alg1->algorithm == NULL)
596 				return -1;
597 			hnid = OBJ_obj2nid(alg1->algorithm);
598 			if (hnid == NID_undef)
599 				return -1;
600 			if (!OBJ_find_sigid_by_algs(&snid, hnid,
601 			    EVP_PKEY_id(pkey)))
602 				return -1;
603 			X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF,
604 			    0);
605 		}
606 		return 1;
607 
608 #ifndef OPENSSL_NO_CMS
609 	case ASN1_PKEY_CTRL_CMS_SIGN:
610 		if (arg1 == 0) {
611 			int snid, hnid;
612 			X509_ALGOR *alg1, *alg2;
613 
614 			CMS_SignerInfo_get0_algs(arg2, NULL, NULL, &alg1, &alg2);
615 			if (alg1 == NULL || alg1->algorithm == NULL)
616 				return -1;
617 			hnid = OBJ_obj2nid(alg1->algorithm);
618 			if (hnid == NID_undef)
619 				return -1;
620 			if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_id(pkey)))
621 				return -1;
622 			X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0);
623 		}
624 		return 1;
625 
626 	case ASN1_PKEY_CTRL_CMS_RI_TYPE:
627 		*(int *)arg2 = CMS_RECIPINFO_NONE;
628 		return 1;
629 #endif
630 
631 	case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
632 		*(int *)arg2 = NID_sha1;
633 		return 2;
634 
635 	default:
636 		return -2;
637 	}
638 }
639 
640 /* NB these are sorted in pkey_id order, lowest first */
641 
642 const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[] = {
643 	{
644 		.pkey_id = EVP_PKEY_DSA2,
645 		.pkey_base_id = EVP_PKEY_DSA,
646 		.pkey_flags = ASN1_PKEY_ALIAS
647 	},
648 
649 	{
650 		.pkey_id = EVP_PKEY_DSA1,
651 		.pkey_base_id = EVP_PKEY_DSA,
652 		.pkey_flags = ASN1_PKEY_ALIAS
653 	},
654 
655 	{
656 		.pkey_id = EVP_PKEY_DSA4,
657 		.pkey_base_id = EVP_PKEY_DSA,
658 		.pkey_flags = ASN1_PKEY_ALIAS
659 	},
660 
661 	{
662 		.pkey_id = EVP_PKEY_DSA3,
663 		.pkey_base_id = EVP_PKEY_DSA,
664 		.pkey_flags = ASN1_PKEY_ALIAS
665 	},
666 
667 	{
668 		.pkey_id = EVP_PKEY_DSA,
669 		.pkey_base_id = EVP_PKEY_DSA,
670 
671 		.pem_str = "DSA",
672 		.info = "OpenSSL DSA method",
673 
674 		.pub_decode = dsa_pub_decode,
675 		.pub_encode = dsa_pub_encode,
676 		.pub_cmp = dsa_pub_cmp,
677 		.pub_print = dsa_pub_print,
678 
679 		.priv_decode = dsa_priv_decode,
680 		.priv_encode = dsa_priv_encode,
681 		.priv_print = dsa_priv_print,
682 
683 		.pkey_size = int_dsa_size,
684 		.pkey_bits = dsa_bits,
685 
686 		.param_decode = dsa_param_decode,
687 		.param_encode = dsa_param_encode,
688 		.param_missing = dsa_missing_parameters,
689 		.param_copy = dsa_copy_parameters,
690 		.param_cmp = dsa_cmp_parameters,
691 		.param_print = dsa_param_print,
692 		.sig_print = dsa_sig_print,
693 
694 		.pkey_free = int_dsa_free,
695 		.pkey_ctrl = dsa_pkey_ctrl,
696 		.old_priv_decode = old_dsa_priv_decode,
697 		.old_priv_encode = old_dsa_priv_encode
698 	}
699 };
700