1 /**********************************************************************
3 * Copyright (c) 2005-2006 Cryptocom LTD *
4 * This file is distributed under the same license as OpenSSL *
6 * Implementation of RFC 4490/4491 ASN1 method *
8 * Requires OpenSSL 0.9.9 for compilation *
9 **********************************************************************/
11 #include <openssl/crypto.h>
12 #include <openssl/err.h>
13 #include <openssl/engine.h>
14 #include <openssl/evp.h>
15 #include <openssl/asn1.h>
16 #ifndef OPENSSL_NO_CMS
17 # include <openssl/cms.h>
19 #include "gost_params.h"
21 #include "e_gost_err.h"
23 int gost94_nid_by_params(DSA *p)
25 R3410_params *gost_params;
27 for (gost_params = R3410_paramset; gost_params->q != NULL; gost_params++) {
28 BN_dec2bn(&q, gost_params->q);
29 if (!BN_cmp(q, p->q)) {
31 return gost_params->nid;
38 static ASN1_STRING *encode_gost_algor_params(const EVP_PKEY *key)
40 ASN1_STRING *params = ASN1_STRING_new();
41 GOST_KEY_PARAMS *gkp = GOST_KEY_PARAMS_new();
42 int pkey_param_nid = NID_undef;
44 if (!params || !gkp) {
45 GOSTerr(GOST_F_ENCODE_GOST_ALGOR_PARAMS, ERR_R_MALLOC_FAILURE);
46 ASN1_STRING_free(params);
50 switch (EVP_PKEY_base_id(key)) {
51 case NID_id_GostR3410_2001:
53 EC_GROUP_get_curve_name(EC_KEY_get0_group
54 (EVP_PKEY_get0((EVP_PKEY *)key)));
56 case NID_id_GostR3410_94:
58 (int)gost94_nid_by_params(EVP_PKEY_get0((EVP_PKEY *)key));
59 if (pkey_param_nid == NID_undef) {
60 GOSTerr(GOST_F_ENCODE_GOST_ALGOR_PARAMS,
61 GOST_R_INVALID_GOST94_PARMSET);
62 ASN1_STRING_free(params);
68 gkp->key_params = OBJ_nid2obj(pkey_param_nid);
69 gkp->hash_params = OBJ_nid2obj(NID_id_GostR3411_94_CryptoProParamSet);
71 * gkp->cipher_params = OBJ_nid2obj(cipher_param_nid);
73 params->length = i2d_GOST_KEY_PARAMS(gkp, ¶ms->data);
74 if (params->length <= 0) {
75 GOSTerr(GOST_F_ENCODE_GOST_ALGOR_PARAMS, ERR_R_MALLOC_FAILURE);
76 ASN1_STRING_free(params);
80 params->type = V_ASN1_SEQUENCE;
82 GOST_KEY_PARAMS_free(gkp);
87 * Parses GOST algorithm parameters from X509_ALGOR and modifies pkey setting
90 static int decode_gost_algor_params(EVP_PKEY *pkey, X509_ALGOR *palg)
92 ASN1_OBJECT *palg_obj = NULL;
93 int ptype = V_ASN1_UNDEF;
94 int pkey_nid = NID_undef, param_nid = NID_undef;
96 ASN1_STRING *pval = NULL;
97 const unsigned char *p;
98 GOST_KEY_PARAMS *gkp = NULL;
100 X509_ALGOR_get0(&palg_obj, &ptype, &_pval, palg);
102 if (ptype != V_ASN1_SEQUENCE) {
103 GOSTerr(GOST_F_DECODE_GOST_ALGOR_PARAMS,
104 GOST_R_BAD_KEY_PARAMETERS_FORMAT);
108 pkey_nid = OBJ_obj2nid(palg_obj);
110 gkp = d2i_GOST_KEY_PARAMS(NULL, &p, pval->length);
112 GOSTerr(GOST_F_DECODE_GOST_ALGOR_PARAMS,
113 GOST_R_BAD_PKEY_PARAMETERS_FORMAT);
116 param_nid = OBJ_obj2nid(gkp->key_params);
117 GOST_KEY_PARAMS_free(gkp);
118 if (!EVP_PKEY_set_type(pkey, pkey_nid)) {
119 GOSTerr(GOST_F_DECODE_GOST_ALGOR_PARAMS, ERR_R_INTERNAL_ERROR);
123 case NID_id_GostR3410_94:
125 DSA *dsa = EVP_PKEY_get0(pkey);
128 if (!EVP_PKEY_assign(pkey, pkey_nid, dsa))
131 if (!fill_GOST94_params(dsa, param_nid))
135 case NID_id_GostR3410_2001:
137 EC_KEY *ec = EVP_PKEY_get0(pkey);
140 if (!EVP_PKEY_assign(pkey, pkey_nid, ec))
143 if (!fill_GOST2001_params(ec, param_nid))
151 static int gost_set_priv_key(EVP_PKEY *pkey, BIGNUM *priv)
153 switch (EVP_PKEY_base_id(pkey)) {
154 case NID_id_GostR3410_94:
156 DSA *dsa = EVP_PKEY_get0(pkey);
159 EVP_PKEY_assign(pkey, EVP_PKEY_base_id(pkey), dsa);
161 dsa->priv_key = BN_dup(priv);
162 if (!EVP_PKEY_missing_parameters(pkey))
163 gost94_compute_public(dsa);
166 case NID_id_GostR3410_2001:
168 EC_KEY *ec = EVP_PKEY_get0(pkey);
171 EVP_PKEY_assign(pkey, EVP_PKEY_base_id(pkey), ec);
173 if (!EC_KEY_set_private_key(ec, priv))
175 if (!EVP_PKEY_missing_parameters(pkey))
176 gost2001_compute_public(ec);
183 BIGNUM *gost_get0_priv_key(const EVP_PKEY *pkey)
185 switch (EVP_PKEY_base_id(pkey)) {
186 case NID_id_GostR3410_94:
188 DSA *dsa = EVP_PKEY_get0((EVP_PKEY *)pkey);
194 return dsa->priv_key;
196 case NID_id_GostR3410_2001:
198 EC_KEY *ec = EVP_PKEY_get0((EVP_PKEY *)pkey);
203 if ((priv = EC_KEY_get0_private_key(ec)) == NULL)
205 return (BIGNUM *)priv;
211 static int pkey_ctrl_gost(EVP_PKEY *pkey, int op, long arg1, void *arg2)
214 case ASN1_PKEY_CTRL_PKCS7_SIGN:
216 X509_ALGOR *alg1 = NULL, *alg2 = NULL;
217 int nid = EVP_PKEY_base_id(pkey);
218 PKCS7_SIGNER_INFO_get0_algs((PKCS7_SIGNER_INFO *)arg2,
220 X509_ALGOR_set0(alg1, OBJ_nid2obj(NID_id_GostR3411_94),
222 if (nid == NID_undef) {
225 X509_ALGOR_set0(alg2, OBJ_nid2obj(nid), V_ASN1_NULL, 0);
228 #ifndef OPENSSL_NO_CMS
229 case ASN1_PKEY_CTRL_CMS_SIGN:
231 X509_ALGOR *alg1 = NULL, *alg2 = NULL;
232 int nid = EVP_PKEY_base_id(pkey);
233 CMS_SignerInfo_get0_algs((CMS_SignerInfo *)arg2,
234 NULL, NULL, &alg1, &alg2);
235 X509_ALGOR_set0(alg1, OBJ_nid2obj(NID_id_GostR3411_94),
237 if (nid == NID_undef) {
240 X509_ALGOR_set0(alg2, OBJ_nid2obj(nid), V_ASN1_NULL, 0);
244 case ASN1_PKEY_CTRL_PKCS7_ENCRYPT:
247 ASN1_STRING *params = encode_gost_algor_params(pkey);
251 PKCS7_RECIP_INFO_get0_alg((PKCS7_RECIP_INFO *)arg2, &alg);
252 X509_ALGOR_set0(alg, OBJ_nid2obj(pkey->type),
253 V_ASN1_SEQUENCE, params);
256 #ifndef OPENSSL_NO_CMS
257 case ASN1_PKEY_CTRL_CMS_ENVELOPE:
259 X509_ALGOR *alg = NULL;
260 ASN1_STRING *params = encode_gost_algor_params(pkey);
264 CMS_RecipientInfo_ktri_get0_algs((CMS_RecipientInfo *)arg2, NULL,
266 X509_ALGOR_set0(alg, OBJ_nid2obj(pkey->type), V_ASN1_SEQUENCE,
271 case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
272 *(int *)arg2 = NID_id_GostR3411_94;
279 /* --------------------- free functions * ------------------------------*/
280 static void pkey_free_gost94(EVP_PKEY *key)
282 DSA_free(key->pkey.dsa);
285 static void pkey_free_gost01(EVP_PKEY *key)
287 EC_KEY_free(key->pkey.ec);
290 /* ------------------ private key functions -----------------------------*/
291 static int priv_decode_gost(EVP_PKEY *pk, PKCS8_PRIV_KEY_INFO *p8inf)
293 const unsigned char *pkey_buf = NULL, *p = NULL;
295 BIGNUM *pk_num = NULL;
297 X509_ALGOR *palg = NULL;
298 ASN1_OBJECT *palg_obj = NULL;
299 ASN1_INTEGER *priv_key = NULL;
301 if (!PKCS8_pkey_get0(&palg_obj, &pkey_buf, &priv_len, &palg, p8inf))
304 if (!decode_gost_algor_params(pk, palg)) {
307 if (V_ASN1_OCTET_STRING == *p) {
308 /* New format - Little endian octet string */
309 unsigned char rev_buf[32];
311 ASN1_OCTET_STRING *s = d2i_ASN1_OCTET_STRING(NULL, &p, priv_len);
312 if (!s || s->length != 32) {
313 GOSTerr(GOST_F_PRIV_DECODE_GOST, EVP_R_DECODE_ERROR);
316 for (i = 0; i < 32; i++) {
317 rev_buf[31 - i] = s->data[i];
320 pk_num = getbnfrombuf(rev_buf, 32);
322 priv_key = d2i_ASN1_INTEGER(NULL, &p, priv_len);
325 ret = ((pk_num = ASN1_INTEGER_to_BN(priv_key, NULL)) != NULL);
326 ASN1_INTEGER_free(priv_key);
328 GOSTerr(GOST_F_PRIV_DECODE_GOST, EVP_R_DECODE_ERROR);
333 ret = gost_set_priv_key(pk, pk_num);
338 /* ----------------------------------------------------------------------*/
339 static int priv_encode_gost(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk)
341 ASN1_OBJECT *algobj = OBJ_nid2obj(EVP_PKEY_base_id(pk));
342 ASN1_STRING *params = encode_gost_algor_params(pk);
343 unsigned char *priv_buf = NULL;
346 ASN1_INTEGER *asn1key = NULL;
350 asn1key = BN_to_ASN1_INTEGER(gost_get0_priv_key(pk), NULL);
351 priv_len = i2d_ASN1_INTEGER(asn1key, &priv_buf);
352 ASN1_INTEGER_free(asn1key);
353 return PKCS8_pkey_set0(p8, algobj, 0, V_ASN1_SEQUENCE, params,
357 /* --------- printing keys --------------------------------*/
358 static int print_gost_94(BIO *out, const EVP_PKEY *pkey, int indent,
359 ASN1_PCTX *pctx, int type)
361 int param_nid = NID_undef;
366 if (!BIO_indent(out, indent, 128))
368 BIO_printf(out, "Private key: ");
369 key = gost_get0_priv_key(pkey);
371 BIO_printf(out, "<undefined>");
374 BIO_printf(out, "\n");
379 pubkey = ((DSA *)EVP_PKEY_get0((EVP_PKEY *)pkey))->pub_key;
380 BIO_indent(out, indent, 128);
381 BIO_printf(out, "Public key: ");
382 BN_print(out, pubkey);
383 BIO_printf(out, "\n");
386 param_nid = gost94_nid_by_params(EVP_PKEY_get0((EVP_PKEY *)pkey));
387 BIO_indent(out, indent, 128);
388 BIO_printf(out, "Parameter set: %s\n", OBJ_nid2ln(param_nid));
392 static int param_print_gost94(BIO *out, const EVP_PKEY *pkey, int indent,
395 return print_gost_94(out, pkey, indent, pctx, 0);
398 static int pub_print_gost94(BIO *out, const EVP_PKEY *pkey, int indent,
401 return print_gost_94(out, pkey, indent, pctx, 1);
404 static int priv_print_gost94(BIO *out, const EVP_PKEY *pkey, int indent,
407 return print_gost_94(out, pkey, indent, pctx, 2);
410 static int print_gost_01(BIO *out, const EVP_PKEY *pkey, int indent,
411 ASN1_PCTX *pctx, int type)
413 int param_nid = NID_undef;
417 if (!BIO_indent(out, indent, 128))
419 BIO_printf(out, "Private key: ");
420 key = gost_get0_priv_key(pkey);
422 BIO_printf(out, "<undefined)");
425 BIO_printf(out, "\n");
428 BN_CTX *ctx = BN_CTX_new();
430 const EC_POINT *pubkey;
431 const EC_GROUP *group;
434 GOSTerr(GOST_F_PRINT_GOST_01, ERR_R_MALLOC_FAILURE);
441 EC_KEY_get0_public_key((EC_KEY *)EVP_PKEY_get0((EVP_PKEY *)pkey));
442 group = EC_KEY_get0_group((EC_KEY *)EVP_PKEY_get0((EVP_PKEY *)pkey));
443 if (!EC_POINT_get_affine_coordinates_GFp(group, pubkey, X, Y, ctx)) {
444 GOSTerr(GOST_F_PRINT_GOST_01, ERR_R_EC_LIB);
448 if (!BIO_indent(out, indent, 128))
450 BIO_printf(out, "Public key:\n");
451 if (!BIO_indent(out, indent + 3, 128))
453 BIO_printf(out, "X:");
455 BIO_printf(out, "\n");
456 BIO_indent(out, indent + 3, 128);
457 BIO_printf(out, "Y:");
459 BIO_printf(out, "\n");
465 EC_GROUP_get_curve_name(EC_KEY_get0_group
466 (EVP_PKEY_get0((EVP_PKEY *)pkey)));
467 if (!BIO_indent(out, indent, 128))
469 BIO_printf(out, "Parameter set: %s\n", OBJ_nid2ln(param_nid));
473 static int param_print_gost01(BIO *out, const EVP_PKEY *pkey, int indent,
476 return print_gost_01(out, pkey, indent, pctx, 0);
479 static int pub_print_gost01(BIO *out, const EVP_PKEY *pkey, int indent,
482 return print_gost_01(out, pkey, indent, pctx, 1);
485 static int priv_print_gost01(BIO *out, const EVP_PKEY *pkey, int indent,
488 return print_gost_01(out, pkey, indent, pctx, 2);
491 /* ---------------------------------------------------------------------*/
492 static int param_missing_gost94(const EVP_PKEY *pk)
494 const DSA *dsa = EVP_PKEY_get0((EVP_PKEY *)pk);
502 static int param_missing_gost01(const EVP_PKEY *pk)
504 const EC_KEY *ec = EVP_PKEY_get0((EVP_PKEY *)pk);
507 if (!EC_KEY_get0_group(ec))
512 static int param_copy_gost94(EVP_PKEY *to, const EVP_PKEY *from)
514 const DSA *dfrom = EVP_PKEY_get0((EVP_PKEY *)from);
515 DSA *dto = EVP_PKEY_get0(to);
516 if (EVP_PKEY_base_id(from) != EVP_PKEY_base_id(to)) {
517 GOSTerr(GOST_F_PARAM_COPY_GOST94, GOST_R_INCOMPATIBLE_ALGORITHMS);
521 GOSTerr(GOST_F_PARAM_COPY_GOST94, GOST_R_KEY_PARAMETERS_MISSING);
526 EVP_PKEY_assign(to, EVP_PKEY_base_id(from), dto);
529 dto->p = BN_dup(dfrom->p);
531 dto->q = BN_dup(dfrom->q);
533 dto->g = BN_dup(dfrom->g);
536 gost94_compute_public(dto);
540 static int param_copy_gost01(EVP_PKEY *to, const EVP_PKEY *from)
542 EC_KEY *eto = EVP_PKEY_get0(to);
543 const EC_KEY *efrom = EVP_PKEY_get0((EVP_PKEY *)from);
544 if (EVP_PKEY_base_id(from) != EVP_PKEY_base_id(to)) {
545 GOSTerr(GOST_F_PARAM_COPY_GOST01, GOST_R_INCOMPATIBLE_ALGORITHMS);
549 GOSTerr(GOST_F_PARAM_COPY_GOST01, GOST_R_KEY_PARAMETERS_MISSING);
555 GOSTerr(GOST_F_PARAM_COPY_GOST01, ERR_R_MALLOC_FAILURE);
558 if (!EVP_PKEY_assign(to, EVP_PKEY_base_id(from), eto)) {
559 GOSTerr(GOST_F_PARAM_COPY_GOST01, ERR_R_INTERNAL_ERROR);
563 if (!EC_KEY_set_group(eto, EC_KEY_get0_group(efrom))) {
564 GOSTerr(GOST_F_PARAM_COPY_GOST01, ERR_R_INTERNAL_ERROR);
567 if (EC_KEY_get0_private_key(eto)) {
568 gost2001_compute_public(eto);
573 static int param_cmp_gost94(const EVP_PKEY *a, const EVP_PKEY *b)
575 const DSA *da = EVP_PKEY_get0((EVP_PKEY *)a);
576 const DSA *db = EVP_PKEY_get0((EVP_PKEY *)b);
577 if (!BN_cmp(da->q, db->q))
582 static int param_cmp_gost01(const EVP_PKEY *a, const EVP_PKEY *b)
584 if (EC_GROUP_get_curve_name
585 (EC_KEY_get0_group(EVP_PKEY_get0((EVP_PKEY *)a))) ==
586 EC_GROUP_get_curve_name(EC_KEY_get0_group
587 (EVP_PKEY_get0((EVP_PKEY *)b)))) {
594 /* ---------- Public key functions * --------------------------------------*/
595 static int pub_decode_gost94(EVP_PKEY *pk, X509_PUBKEY *pub)
597 X509_ALGOR *palg = NULL;
598 const unsigned char *pubkey_buf = NULL;
599 unsigned char *databuf;
600 ASN1_OBJECT *palgobj = NULL;
603 ASN1_OCTET_STRING *octet = NULL;
605 if (!X509_PUBKEY_get0_param(&palgobj, &pubkey_buf, &pub_len, &palg, pub))
607 EVP_PKEY_assign(pk, OBJ_obj2nid(palgobj), NULL);
608 if (!decode_gost_algor_params(pk, palg))
610 octet = d2i_ASN1_OCTET_STRING(NULL, &pubkey_buf, pub_len);
612 GOSTerr(GOST_F_PUB_DECODE_GOST94, ERR_R_MALLOC_FAILURE);
615 databuf = OPENSSL_malloc(octet->length);
616 if (databuf == NULL) {
617 GOSTerr(GOST_F_PUB_DECODE_GOST94, ERR_R_MALLOC_FAILURE);
618 ASN1_OCTET_STRING_free(octet);
621 for (i = 0, j = octet->length - 1; i < octet->length; i++, j--) {
622 databuf[j] = octet->data[i];
624 dsa = EVP_PKEY_get0(pk);
625 dsa->pub_key = BN_bin2bn(databuf, octet->length, NULL);
626 ASN1_OCTET_STRING_free(octet);
627 OPENSSL_free(databuf);
632 static int pub_encode_gost94(X509_PUBKEY *pub, const EVP_PKEY *pk)
634 ASN1_OBJECT *algobj = NULL;
635 ASN1_OCTET_STRING *octet = NULL;
637 unsigned char *buf = NULL, *databuf, *sptr;
638 int i, j, data_len, ret = 0;
640 int ptype = V_ASN1_UNDEF;
641 DSA *dsa = EVP_PKEY_get0((EVP_PKEY *)pk);
642 algobj = OBJ_nid2obj(EVP_PKEY_base_id(pk));
643 if (pk->save_parameters) {
644 ASN1_STRING *params = encode_gost_algor_params(pk);
646 ptype = V_ASN1_SEQUENCE;
648 data_len = BN_num_bytes(dsa->pub_key);
649 databuf = OPENSSL_malloc(data_len);
650 if (databuf == NULL) {
651 GOSTerr(GOST_F_PUB_ENCODE_GOST94, ERR_R_MALLOC_FAILURE);
654 BN_bn2bin(dsa->pub_key, databuf);
655 octet = ASN1_OCTET_STRING_new();
657 GOSTerr(GOST_F_PUB_ENCODE_GOST94, ERR_R_MALLOC_FAILURE);
658 OPENSSL_free(databuf);
661 ASN1_STRING_set(octet, NULL, data_len);
662 sptr = ASN1_STRING_data(octet);
663 for (i = 0, j = data_len - 1; i < data_len; i++, j--) {
664 sptr[i] = databuf[j];
666 OPENSSL_free(databuf);
667 ret = i2d_ASN1_OCTET_STRING(octet, &buf);
668 ASN1_BIT_STRING_free(octet);
671 return X509_PUBKEY_set0_param(pub, algobj, ptype, pval, buf, ret);
674 static int pub_decode_gost01(EVP_PKEY *pk, X509_PUBKEY *pub)
676 X509_ALGOR *palg = NULL;
677 const unsigned char *pubkey_buf = NULL;
678 unsigned char *databuf;
679 ASN1_OBJECT *palgobj = NULL;
683 ASN1_OCTET_STRING *octet = NULL;
685 const EC_GROUP *group;
687 if (!X509_PUBKEY_get0_param(&palgobj, &pubkey_buf, &pub_len, &palg, pub))
689 EVP_PKEY_assign(pk, OBJ_obj2nid(palgobj), NULL);
690 if (!decode_gost_algor_params(pk, palg))
692 group = EC_KEY_get0_group(EVP_PKEY_get0(pk));
693 octet = d2i_ASN1_OCTET_STRING(NULL, &pubkey_buf, pub_len);
695 GOSTerr(GOST_F_PUB_DECODE_GOST01, ERR_R_MALLOC_FAILURE);
698 databuf = OPENSSL_malloc(octet->length);
699 if (databuf == NULL) {
700 GOSTerr(GOST_F_PUB_DECODE_GOST01, ERR_R_MALLOC_FAILURE);
701 ASN1_OCTET_STRING_free(octet);
704 for (i = 0, j = octet->length - 1; i < octet->length; i++, j--) {
705 databuf[j] = octet->data[i];
707 len = octet->length / 2;
708 ASN1_OCTET_STRING_free(octet);
710 Y = getbnfrombuf(databuf, len);
711 X = getbnfrombuf(databuf + len, len);
712 OPENSSL_free(databuf);
713 pub_key = EC_POINT_new(group);
714 if (!EC_POINT_set_affine_coordinates_GFp(group, pub_key, X, Y, NULL)) {
715 GOSTerr(GOST_F_PUB_DECODE_GOST01, ERR_R_EC_LIB);
716 EC_POINT_free(pub_key);
723 if (!EC_KEY_set_public_key(EVP_PKEY_get0(pk), pub_key)) {
724 GOSTerr(GOST_F_PUB_DECODE_GOST01, ERR_R_EC_LIB);
725 EC_POINT_free(pub_key);
728 EC_POINT_free(pub_key);
733 static int pub_encode_gost01(X509_PUBKEY *pub, const EVP_PKEY *pk)
735 ASN1_OBJECT *algobj = NULL;
736 ASN1_OCTET_STRING *octet = NULL;
738 unsigned char *buf = NULL, *databuf, *sptr;
739 int i, j, data_len, ret = 0;
740 const EC_POINT *pub_key;
741 BIGNUM *X, *Y, *order;
742 const EC_KEY *ec = EVP_PKEY_get0((EVP_PKEY *)pk);
743 int ptype = V_ASN1_UNDEF;
745 algobj = OBJ_nid2obj(EVP_PKEY_base_id(pk));
746 if (pk->save_parameters) {
747 ASN1_STRING *params = encode_gost_algor_params(pk);
749 ptype = V_ASN1_SEQUENCE;
752 EC_GROUP_get_order(EC_KEY_get0_group(ec), order, NULL);
753 pub_key = EC_KEY_get0_public_key(ec);
755 GOSTerr(GOST_F_PUB_ENCODE_GOST01, GOST_R_PUBLIC_KEY_UNDEFINED);
762 GOSTerr(GOST_F_PUB_ENCODE_GOST01, ERR_R_MALLOC_FAILURE);
768 if (!EC_POINT_get_affine_coordinates_GFp(EC_KEY_get0_group(ec),
769 pub_key, X, Y, NULL)) {
770 GOSTerr(GOST_F_PUB_ENCODE_GOST01, ERR_R_INTERNAL_ERROR);
776 data_len = 2 * BN_num_bytes(order);
778 databuf = OPENSSL_malloc(data_len);
779 if (databuf == NULL) {
780 GOSTerr(GOST_F_PUB_ENCODE_GOST01, ERR_R_MALLOC_FAILURE);
785 memset(databuf, 0, data_len);
787 store_bignum(X, databuf + data_len / 2, data_len / 2);
788 store_bignum(Y, databuf, data_len / 2);
792 octet = ASN1_OCTET_STRING_new();
794 GOSTerr(GOST_F_PUB_ENCODE_GOST01, ERR_R_MALLOC_FAILURE);
795 OPENSSL_free(databuf);
798 ASN1_STRING_set(octet, NULL, data_len);
799 sptr = ASN1_STRING_data(octet);
800 for (i = 0, j = data_len - 1; i < data_len; i++, j--) {
801 sptr[i] = databuf[j];
803 OPENSSL_free(databuf);
804 ret = i2d_ASN1_OCTET_STRING(octet, &buf);
805 ASN1_BIT_STRING_free(octet);
808 return X509_PUBKEY_set0_param(pub, algobj, ptype, pval, buf, ret);
811 static int pub_cmp_gost94(const EVP_PKEY *a, const EVP_PKEY *b)
813 const DSA *da = EVP_PKEY_get0((EVP_PKEY *)a);
814 const DSA *db = EVP_PKEY_get0((EVP_PKEY *)b);
815 if (da && db && da->pub_key && db->pub_key
816 && !BN_cmp(da->pub_key, db->pub_key)) {
822 static int pub_cmp_gost01(const EVP_PKEY *a, const EVP_PKEY *b)
824 const EC_KEY *ea = EVP_PKEY_get0((EVP_PKEY *)a);
825 const EC_KEY *eb = EVP_PKEY_get0((EVP_PKEY *)b);
826 const EC_POINT *ka, *kb;
830 ka = EC_KEY_get0_public_key(ea);
831 kb = EC_KEY_get0_public_key(eb);
834 ret = (0 == EC_POINT_cmp(EC_KEY_get0_group(ea), ka, kb, NULL));
838 static int pkey_size_gost(const EVP_PKEY *pk)
843 static int pkey_bits_gost(const EVP_PKEY *pk)
848 /* ---------------------- ASN1 METHOD for GOST MAC -------------------*/
849 static void mackey_free_gost(EVP_PKEY *pk)
851 OPENSSL_free(pk->pkey.ptr);
854 static int mac_ctrl_gost(EVP_PKEY *pkey, int op, long arg1, void *arg2)
857 case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
858 *(int *)arg2 = NID_id_Gost28147_89_MAC;
864 static int gost94_param_encode(const EVP_PKEY *pkey, unsigned char **pder)
866 int nid = gost94_nid_by_params(EVP_PKEY_get0((EVP_PKEY *)pkey));
867 return i2d_ASN1_OBJECT(OBJ_nid2obj(nid), pder);
870 static int gost2001_param_encode(const EVP_PKEY *pkey, unsigned char **pder)
873 EC_GROUP_get_curve_name(EC_KEY_get0_group
874 (EVP_PKEY_get0((EVP_PKEY *)pkey)));
875 return i2d_ASN1_OBJECT(OBJ_nid2obj(nid), pder);
878 static int gost94_param_decode(EVP_PKEY *pkey, const unsigned char **pder,
881 ASN1_OBJECT *obj = NULL;
882 DSA *dsa = EVP_PKEY_get0(pkey);
884 if (d2i_ASN1_OBJECT(&obj, pder, derlen) == NULL) {
887 nid = OBJ_obj2nid(obj);
888 ASN1_OBJECT_free(obj);
891 if (!EVP_PKEY_assign(pkey, NID_id_GostR3410_94, dsa))
894 if (!fill_GOST94_params(dsa, nid))
899 static int gost2001_param_decode(EVP_PKEY *pkey, const unsigned char **pder,
902 ASN1_OBJECT *obj = NULL;
904 EC_KEY *ec = EVP_PKEY_get0(pkey);
905 if (d2i_ASN1_OBJECT(&obj, pder, derlen) == NULL) {
908 nid = OBJ_obj2nid(obj);
909 ASN1_OBJECT_free(obj);
912 if (!EVP_PKEY_assign(pkey, NID_id_GostR3410_2001, ec))
915 if (!fill_GOST2001_params(ec, nid))
920 /* ----------------------------------------------------------------------*/
921 int register_ameth_gost(int nid, EVP_PKEY_ASN1_METHOD **ameth,
922 const char *pemstr, const char *info)
924 *ameth = EVP_PKEY_asn1_new(nid, ASN1_PKEY_SIGPARAM_NULL, pemstr, info);
928 case NID_id_GostR3410_94:
929 EVP_PKEY_asn1_set_free(*ameth, pkey_free_gost94);
930 EVP_PKEY_asn1_set_private(*ameth,
931 priv_decode_gost, priv_encode_gost,
934 EVP_PKEY_asn1_set_param(*ameth,
935 gost94_param_decode, gost94_param_encode,
936 param_missing_gost94, param_copy_gost94,
937 param_cmp_gost94, param_print_gost94);
938 EVP_PKEY_asn1_set_public(*ameth,
939 pub_decode_gost94, pub_encode_gost94,
940 pub_cmp_gost94, pub_print_gost94,
941 pkey_size_gost, pkey_bits_gost);
943 EVP_PKEY_asn1_set_ctrl(*ameth, pkey_ctrl_gost);
945 case NID_id_GostR3410_2001:
946 EVP_PKEY_asn1_set_free(*ameth, pkey_free_gost01);
947 EVP_PKEY_asn1_set_private(*ameth,
948 priv_decode_gost, priv_encode_gost,
951 EVP_PKEY_asn1_set_param(*ameth,
952 gost2001_param_decode, gost2001_param_encode,
953 param_missing_gost01, param_copy_gost01,
954 param_cmp_gost01, param_print_gost01);
955 EVP_PKEY_asn1_set_public(*ameth,
956 pub_decode_gost01, pub_encode_gost01,
957 pub_cmp_gost01, pub_print_gost01,
958 pkey_size_gost, pkey_bits_gost);
960 EVP_PKEY_asn1_set_ctrl(*ameth, pkey_ctrl_gost);
962 case NID_id_Gost28147_89_MAC:
963 EVP_PKEY_asn1_set_free(*ameth, mackey_free_gost);
964 EVP_PKEY_asn1_set_ctrl(*ameth, mac_ctrl_gost);