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>
20 #include "e_gost_err.h"
23 * Pack bignum into byte buffer of given size, filling all leading bytes by
26 int store_bignum(const BIGNUM *bn, unsigned char *buf, int len)
28 int bytes = BN_num_bytes(bn);
33 BN_bn2bin(bn, buf + len - bytes);
37 static int pkey_bits_gost(const EVP_PKEY *pk)
42 switch (EVP_PKEY_base_id(pk)) {
43 case NID_id_GostR3410_2001:
44 case NID_id_GostR3410_2012_256:
46 case NID_id_GostR3410_2012_512:
53 static ASN1_STRING *encode_gost_algor_params(const EVP_PKEY *key)
55 ASN1_STRING *params = ASN1_STRING_new();
56 GOST_KEY_PARAMS *gkp = GOST_KEY_PARAMS_new();
57 int pkey_param_nid = NID_undef;
58 void *key_ptr = EVP_PKEY_get0((EVP_PKEY *)key);
61 if (!params || !gkp) {
62 GOSTerr(GOST_F_ENCODE_GOST_ALGOR_PARAMS, ERR_R_MALLOC_FAILURE);
65 switch (EVP_PKEY_base_id(key)) {
66 case NID_id_GostR3410_2012_256:
67 pkey_param_nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(key_ptr));
68 gkp->hash_params = OBJ_nid2obj(NID_id_GostR3411_2012_256);
70 case NID_id_GostR3410_2012_512:
71 pkey_param_nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(key_ptr));
72 gkp->hash_params = OBJ_nid2obj(NID_id_GostR3411_2012_512);
74 case NID_id_GostR3410_2001:
75 pkey_param_nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(key_ptr));
76 gkp->hash_params = OBJ_nid2obj(NID_id_GostR3411_94_CryptoProParamSet);
80 if (pkey_param_nid == NID_undef) {
81 GOSTerr(GOST_F_ENCODE_GOST_ALGOR_PARAMS, GOST_R_INVALID_PARAMSET);
85 gkp->key_params = OBJ_nid2obj(pkey_param_nid);
87 * gkp->cipher_params = OBJ_nid2obj(cipher_param_nid);
89 params->length = i2d_GOST_KEY_PARAMS(gkp, ¶ms->data);
90 if (params->length <= 0) {
91 GOSTerr(GOST_F_ENCODE_GOST_ALGOR_PARAMS, ERR_R_MALLOC_FAILURE);
94 params->type = V_ASN1_SEQUENCE;
98 GOST_KEY_PARAMS_free(gkp);
99 if (result == 0) { /* if error */
101 ASN1_STRING_free(params);
107 static int gost_decode_nid_params(EVP_PKEY *pkey, int pkey_nid, int param_nid)
109 void *key_ptr = EVP_PKEY_get0(pkey);
112 case NID_id_GostR3410_2012_256:
113 case NID_id_GostR3410_2012_512:
114 case NID_id_GostR3410_2001:
116 key_ptr = EC_KEY_new();
117 if (!EVP_PKEY_assign(pkey, pkey_nid, key_ptr)) {
118 EC_KEY_free(key_ptr);
122 return fill_GOST_EC_params(key_ptr, param_nid);
129 * Parses GOST algorithm parameters from X509_ALGOR and modifies pkey setting
132 static int decode_gost_algor_params(EVP_PKEY *pkey, const X509_ALGOR *palg)
134 const ASN1_OBJECT *palg_obj = NULL;
135 int ptype = V_ASN1_UNDEF;
136 int pkey_nid = NID_undef, param_nid = NID_undef;
137 ASN1_STRING *pval = NULL;
138 const unsigned char *p;
139 GOST_KEY_PARAMS *gkp = NULL;
143 X509_ALGOR_get0(&palg_obj, &ptype, (const void **)&pval, palg);
144 if (ptype != V_ASN1_SEQUENCE) {
145 GOSTerr(GOST_F_DECODE_GOST_ALGOR_PARAMS,
146 GOST_R_BAD_KEY_PARAMETERS_FORMAT);
150 pkey_nid = OBJ_obj2nid(palg_obj);
152 gkp = d2i_GOST_KEY_PARAMS(NULL, &p, pval->length);
154 GOSTerr(GOST_F_DECODE_GOST_ALGOR_PARAMS,
155 GOST_R_BAD_PKEY_PARAMETERS_FORMAT);
158 param_nid = OBJ_obj2nid(gkp->key_params);
159 GOST_KEY_PARAMS_free(gkp);
160 if (!EVP_PKEY_set_type(pkey, pkey_nid)) {
161 GOSTerr(GOST_F_DECODE_GOST_ALGOR_PARAMS, ERR_R_INTERNAL_ERROR);
164 return gost_decode_nid_params(pkey, pkey_nid, param_nid);
167 static int gost_set_priv_key(EVP_PKEY *pkey, BIGNUM *priv)
169 switch (EVP_PKEY_base_id(pkey)) {
170 case NID_id_GostR3410_2012_512:
171 case NID_id_GostR3410_2012_256:
172 case NID_id_GostR3410_2001:
174 EC_KEY *ec = EVP_PKEY_get0(pkey);
177 EVP_PKEY_assign(pkey, EVP_PKEY_base_id(pkey), ec);
179 if (!EC_KEY_set_private_key(ec, priv))
181 if (!EVP_PKEY_missing_parameters(pkey))
182 gost_ec_compute_public(ec);
191 BIGNUM *gost_get0_priv_key(const EVP_PKEY *pkey)
193 switch (EVP_PKEY_base_id(pkey)) {
194 case NID_id_GostR3410_2012_512:
195 case NID_id_GostR3410_2012_256:
196 case NID_id_GostR3410_2001:
198 EC_KEY *ec = EVP_PKEY_get0((EVP_PKEY *)pkey);
200 return (BIGNUM *)EC_KEY_get0_private_key(ec);
210 static int pkey_ctrl_gost(EVP_PKEY *pkey, int op, long arg1, void *arg2)
212 int nid = EVP_PKEY_base_id(pkey), md_nid = NID_undef;
213 X509_ALGOR *alg1 = NULL, *alg2 = NULL;
216 case NID_id_GostR3410_2012_512:
217 md_nid = NID_id_GostR3411_2012_512;
219 case NID_id_GostR3410_2012_256:
220 md_nid = NID_id_GostR3411_2012_256;
222 case NID_id_GostR3410_2001:
223 case NID_id_GostR3410_94:
224 md_nid = NID_id_GostR3411_94;
231 case ASN1_PKEY_CTRL_PKCS7_SIGN:
233 PKCS7_SIGNER_INFO_get0_algs((PKCS7_SIGNER_INFO *)arg2, NULL,
235 X509_ALGOR_set0(alg1, OBJ_nid2obj(md_nid), V_ASN1_NULL, 0);
236 X509_ALGOR_set0(alg2, OBJ_nid2obj(nid), V_ASN1_NULL, 0);
239 #ifndef OPENSSL_NO_CMS
240 case ASN1_PKEY_CTRL_CMS_SIGN:
242 CMS_SignerInfo_get0_algs((CMS_SignerInfo *)arg2, NULL, NULL,
244 X509_ALGOR_set0(alg1, OBJ_nid2obj(md_nid), V_ASN1_NULL, 0);
245 X509_ALGOR_set0(alg2, OBJ_nid2obj(nid), V_ASN1_NULL, 0);
249 case ASN1_PKEY_CTRL_PKCS7_ENCRYPT:
251 ASN1_STRING *params = encode_gost_algor_params(pkey);
255 PKCS7_RECIP_INFO_get0_alg((PKCS7_RECIP_INFO *)arg2, &alg1);
256 X509_ALGOR_set0(alg1, OBJ_nid2obj(EVP_PKEY_id(pkey)),
257 V_ASN1_SEQUENCE, params);
260 #ifndef OPENSSL_NO_CMS
261 case ASN1_PKEY_CTRL_CMS_ENVELOPE:
263 ASN1_STRING *params = encode_gost_algor_params(pkey);
267 CMS_RecipientInfo_ktri_get0_algs((CMS_RecipientInfo *)arg2, NULL,
269 X509_ALGOR_set0(alg1, OBJ_nid2obj(EVP_PKEY_id(pkey)),
270 V_ASN1_SEQUENCE, params);
274 case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
275 *(int *)arg2 = md_nid;
282 /* --------------------- free functions * ------------------------------*/
283 static void pkey_free_gost_ec(EVP_PKEY *key)
285 EC_KEY_free((EC_KEY *)EVP_PKEY_get0(key));
288 /* ------------------ private key functions -----------------------------*/
290 static BIGNUM *unmask_priv_key(EVP_PKEY *pk,
291 const unsigned char *buf, int len,
294 BIGNUM *pknum_masked = NULL, *q = NULL;
295 const EC_KEY *key_ptr = (pk) ? EVP_PKEY_get0(pk) : NULL;
296 const EC_GROUP *group = (key_ptr) ? EC_KEY_get0_group(key_ptr) : NULL;
298 pknum_masked = hashsum2bn(buf, len);
304 * XXX Remove sign by gost94
306 const unsigned char *p = buf + num_masks * len;
309 if (!q || !group || EC_GROUP_get_order(group, q, NULL) <= 0) {
310 BN_free(pknum_masked);
315 for (; p != buf; p -= len) {
316 BIGNUM *mask = hashsum2bn(p, len);
317 BN_CTX *ctx = BN_CTX_new();
319 BN_mod_mul(pknum_masked, pknum_masked, mask, q, ctx);
332 static int priv_decode_gost(EVP_PKEY *pk, const PKCS8_PRIV_KEY_INFO *p8inf)
334 const unsigned char *pkey_buf = NULL, *p = NULL;
336 BIGNUM *pk_num = NULL;
338 const X509_ALGOR *palg = NULL;
339 const ASN1_OBJECT *palg_obj = NULL;
340 ASN1_INTEGER *priv_key = NULL;
341 int expected_key_len = 32;
343 if (!PKCS8_pkey_get0(&palg_obj, &pkey_buf, &priv_len, &palg, p8inf))
346 if (!decode_gost_algor_params(pk, palg)) {
350 expected_key_len = pkey_bits_gost(pk) > 0 ? pkey_bits_gost(pk) / 8 : 0;
351 if (expected_key_len == 0) {
352 GOSTerr(GOST_F_PRIV_DECODE_GOST, EVP_R_DECODE_ERROR);
356 if (priv_len % expected_key_len == 0) {
357 /* Key is not wrapped but masked */
358 pk_num = unmask_priv_key(pk, pkey_buf, expected_key_len,
359 priv_len / expected_key_len - 1);
360 } else if (V_ASN1_OCTET_STRING == *p) {
361 /* New format - Little endian octet string */
362 ASN1_OCTET_STRING *s = d2i_ASN1_OCTET_STRING(NULL, &p, priv_len);
363 if (!s || ((s->length != 32) && (s->length != 64))) {
365 GOSTerr(GOST_F_PRIV_DECODE_GOST, EVP_R_DECODE_ERROR);
368 pk_num = hashsum2bn(s->data, s->length);
370 } else if (V_ASN1_INTEGER == *p) {
371 priv_key = d2i_ASN1_INTEGER(NULL, &p, priv_len);
373 GOSTerr(GOST_F_PRIV_DECODE_GOST, EVP_R_DECODE_ERROR);
376 pk_num = ASN1_INTEGER_to_BN(priv_key, NULL);
377 ASN1_INTEGER_free(priv_key);
378 } else if ((V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED) == *p) {
379 MASKED_GOST_KEY *mgk = NULL;
380 mgk = d2i_MASKED_GOST_KEY(NULL, &p, priv_len);
383 GOSTerr(GOST_F_PRIV_DECODE_GOST, EVP_R_DECODE_ERROR);
387 priv_len = mgk->masked_priv_key->length;
388 if (priv_len % expected_key_len) {
389 MASKED_GOST_KEY_free(mgk);
390 GOSTerr(GOST_F_PRIV_DECODE_GOST, EVP_R_DECODE_ERROR);
394 pk_num = unmask_priv_key(pk, mgk->masked_priv_key->data,
396 priv_len / expected_key_len - 1);
397 MASKED_GOST_KEY_free(mgk);
399 GOSTerr(GOST_F_PRIV_DECODE_GOST, EVP_R_DECODE_ERROR);
403 if (pk_num == NULL) {
404 GOSTerr(GOST_F_PRIV_DECODE_GOST, EVP_R_DECODE_ERROR);
408 ret = gost_set_priv_key(pk, pk_num);
413 /* ----------------------------------------------------------------------*/
414 static int priv_encode_gost(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk)
416 ASN1_OBJECT *algobj = OBJ_nid2obj(EVP_PKEY_base_id(pk));
417 ASN1_STRING *params = encode_gost_algor_params(pk);
418 unsigned char /**priv_buf = NULL,*/ *buf = NULL;
419 int key_len = pkey_bits_gost(pk), /*priv_len = 0,*/ i = 0;
421 /*ASN1_STRING *octet = NULL;*/
426 key_len = (key_len < 0) ? 0 : key_len / 8;
427 if (key_len == 0 || !(buf = OPENSSL_malloc(key_len))) {
431 if (!store_bignum(gost_get0_priv_key(pk), buf, key_len)) {
436 /* Convert buf to Little-endian */
437 for (i = 0; i < key_len / 2; i++) {
438 unsigned char tmp = buf[i];
439 buf[i] = buf[key_len - 1 - i];
440 buf[key_len - 1 - i] = tmp;
444 octet = ASN1_STRING_new();
445 ASN1_OCTET_STRING_set(octet, buf, key_len);
447 priv_len = i2d_ASN1_OCTET_STRING(octet, &priv_buf);
448 ASN1_STRING_free(octet);
451 return PKCS8_pkey_set0(p8, algobj, 0, V_ASN1_SEQUENCE, params,
452 priv_buf, priv_len); */
453 return PKCS8_pkey_set0(p8, algobj, 0, V_ASN1_SEQUENCE, params,
457 /* --------- printing keys --------------------------------*/
458 static int print_gost_priv(BIO *out, const EVP_PKEY *pkey, int indent)
462 if (!BIO_indent(out, indent, 128))
464 BIO_printf(out, "Private key: ");
465 key = gost_get0_priv_key(pkey);
467 BIO_printf(out, "<undefined>");
470 BIO_printf(out, "\n");
475 static int print_gost_ec_pub(BIO *out, const EVP_PKEY *pkey, int indent)
479 const EC_POINT *pubkey;
480 const EC_GROUP *group;
481 EC_KEY *key = (EC_KEY *)EVP_PKEY_get0((EVP_PKEY *)pkey);
486 GOSTerr(GOST_F_PRINT_GOST_EC_PUB, ERR_R_MALLOC_FAILURE);
493 pubkey = (key) ? EC_KEY_get0_public_key(key) : NULL;
494 group = (key) ? EC_KEY_get0_group(key) : NULL;
495 if (!pubkey || !group)
498 if (!EC_POINT_get_affine_coordinates_GFp(group, pubkey, X, Y, ctx)) {
499 GOSTerr(GOST_F_PRINT_GOST_EC_PUB, ERR_R_EC_LIB);
502 if (!BIO_indent(out, indent, 128))
504 BIO_printf(out, "Public key:\n");
505 if (!BIO_indent(out, indent + 3, 128))
507 BIO_printf(out, "X:");
509 BIO_printf(out, "\n");
510 if (!BIO_indent(out, indent + 3, 128))
512 BIO_printf(out, "Y:");
514 BIO_printf(out, "\n");
523 static int print_gost_ec_param(BIO *out, const EVP_PKEY *pkey, int indent)
525 EC_KEY *ec = EVP_PKEY_get0((EVP_PKEY *)pkey);
526 const EC_GROUP *group = (ec) ? EC_KEY_get0_group(ec) : NULL;
532 param_nid = EC_GROUP_get_curve_name(group);
533 if (!BIO_indent(out, indent, 128))
535 BIO_printf(out, "Parameter set: %s\n", OBJ_nid2ln(param_nid));
540 static int print_gost_ec(BIO *out, const EVP_PKEY *pkey, int indent,
541 ASN1_PCTX *pctx, int type)
544 if (print_gost_priv(out, pkey, indent) == 0)
548 if (print_gost_ec_pub(out, pkey, indent) == 0)
552 return print_gost_ec_param(out, pkey, indent);
555 static int param_print_gost_ec(BIO *out, const EVP_PKEY *pkey, int indent,
558 return print_gost_ec(out, pkey, indent, pctx, 0);
561 static int pub_print_gost_ec(BIO *out, const EVP_PKEY *pkey, int indent,
564 return print_gost_ec(out, pkey, indent, pctx, 1);
567 static int priv_print_gost_ec(BIO *out, const EVP_PKEY *pkey, int indent,
570 return print_gost_ec(out, pkey, indent, pctx, 2);
573 /* ---------------------------------------------------------------------*/
574 static int param_missing_gost_ec(const EVP_PKEY *pk)
576 const EC_KEY *ec = EVP_PKEY_get0((EVP_PKEY *)pk);
579 if (!EC_KEY_get0_group(ec))
584 static int param_copy_gost_ec(EVP_PKEY *to, const EVP_PKEY *from)
586 EC_KEY *eto = EVP_PKEY_get0(to);
587 const EC_KEY *efrom = EVP_PKEY_get0((EVP_PKEY *)from);
588 if (EVP_PKEY_base_id(from) != EVP_PKEY_base_id(to)) {
589 GOSTerr(GOST_F_PARAM_COPY_GOST_EC, GOST_R_INCOMPATIBLE_ALGORITHMS);
593 GOSTerr(GOST_F_PARAM_COPY_GOST_EC, GOST_R_KEY_PARAMETERS_MISSING);
599 GOSTerr(GOST_F_PARAM_COPY_GOST_EC, ERR_R_MALLOC_FAILURE);
602 if (!EVP_PKEY_assign(to, EVP_PKEY_base_id(from), eto)) {
603 GOSTerr(GOST_F_PARAM_COPY_GOST_EC, ERR_R_INTERNAL_ERROR);
608 if (!EC_KEY_set_group(eto, EC_KEY_get0_group(efrom))) {
609 GOSTerr(GOST_F_PARAM_COPY_GOST_EC, ERR_R_INTERNAL_ERROR);
612 if (EC_KEY_get0_private_key(eto)) {
613 return gost_ec_compute_public(eto);
618 static int param_cmp_gost_ec(const EVP_PKEY *a, const EVP_PKEY *b)
620 const EC_GROUP *group_a, *group_b;
621 EC_KEY *ec_a = EVP_PKEY_get0((EVP_PKEY *)a);
622 EC_KEY *ec_b = EVP_PKEY_get0((EVP_PKEY *)b);
626 group_a = EC_KEY_get0_group(ec_a);
627 group_b = EC_KEY_get0_group(ec_b);
628 if (!group_a || !group_b)
631 if (EC_GROUP_get_curve_name(group_a) == EC_GROUP_get_curve_name(group_b)) {
637 /* ---------- Public key functions * --------------------------------------*/
638 static int pub_decode_gost_ec(EVP_PKEY *pk, X509_PUBKEY *pub)
640 X509_ALGOR *palg = NULL;
641 const unsigned char *pubkey_buf = NULL;
642 unsigned char *databuf;
643 ASN1_OBJECT *palgobj = NULL;
647 ASN1_OCTET_STRING *octet = NULL;
649 const EC_GROUP *group;
651 if (!X509_PUBKEY_get0_param(&palgobj, &pubkey_buf, &pub_len, &palg, pub))
653 EVP_PKEY_assign(pk, OBJ_obj2nid(palgobj), NULL);
654 if (!decode_gost_algor_params(pk, palg))
656 group = EC_KEY_get0_group(EVP_PKEY_get0(pk));
657 octet = d2i_ASN1_OCTET_STRING(NULL, &pubkey_buf, pub_len);
659 GOSTerr(GOST_F_PUB_DECODE_GOST_EC, ERR_R_MALLOC_FAILURE);
662 databuf = OPENSSL_malloc(octet->length);
663 if (databuf == NULL) {
664 GOSTerr(GOST_F_PUB_DECODE_GOST_EC, ERR_R_MALLOC_FAILURE);
665 ASN1_OCTET_STRING_free(octet);
669 BUF_reverse(databuf, octet->data, octet->length);
670 len = octet->length / 2;
671 ASN1_OCTET_STRING_free(octet);
673 Y = BN_bin2bn(databuf, len, NULL);
674 X = BN_bin2bn(databuf + len, len, NULL);
675 OPENSSL_free(databuf);
676 pub_key = EC_POINT_new(group);
677 if (!EC_POINT_set_affine_coordinates_GFp(group, pub_key, X, Y, NULL)) {
678 GOSTerr(GOST_F_PUB_DECODE_GOST_EC, ERR_R_EC_LIB);
679 EC_POINT_free(pub_key);
686 if (!EC_KEY_set_public_key(EVP_PKEY_get0(pk), pub_key)) {
687 GOSTerr(GOST_F_PUB_DECODE_GOST_EC, ERR_R_EC_LIB);
688 EC_POINT_free(pub_key);
691 EC_POINT_free(pub_key);
696 static int pub_encode_gost_ec(X509_PUBKEY *pub, const EVP_PKEY *pk)
698 ASN1_OBJECT *algobj = NULL;
699 ASN1_OCTET_STRING *octet = NULL;
701 unsigned char *buf = NULL, *databuf = NULL;
702 int data_len, ret = -1;
703 const EC_POINT *pub_key;
704 BIGNUM *X = NULL, *Y = NULL, *order = NULL;
705 const EC_KEY *ec = EVP_PKEY_get0((EVP_PKEY *)pk);
706 int ptype = V_ASN1_UNDEF;
708 algobj = OBJ_nid2obj(EVP_PKEY_base_id(pk));
710 ASN1_STRING *params = encode_gost_algor_params(pk);
712 ptype = V_ASN1_SEQUENCE;
716 GOSTerr(GOST_F_PUB_ENCODE_GOST_EC, ERR_R_MALLOC_FAILURE);
719 EC_GROUP_get_order(EC_KEY_get0_group(ec), order, NULL);
720 pub_key = EC_KEY_get0_public_key(ec);
722 GOSTerr(GOST_F_PUB_ENCODE_GOST_EC, GOST_R_PUBLIC_KEY_UNDEFINED);
728 GOSTerr(GOST_F_PUB_ENCODE_GOST_EC, ERR_R_MALLOC_FAILURE);
731 if (!EC_POINT_get_affine_coordinates_GFp(EC_KEY_get0_group(ec),
732 pub_key, X, Y, NULL)) {
733 GOSTerr(GOST_F_PUB_ENCODE_GOST_EC, ERR_R_INTERNAL_ERROR);
736 data_len = 2 * BN_num_bytes(order);
737 databuf = OPENSSL_zalloc(data_len);
738 if (databuf == NULL) {
739 GOSTerr(GOST_F_PUB_ENCODE_GOST_EC, ERR_R_MALLOC_FAILURE);
743 store_bignum(X, databuf + data_len / 2, data_len / 2);
744 store_bignum(Y, databuf, data_len / 2);
746 BUF_reverse(databuf, NULL, data_len);
748 octet = ASN1_OCTET_STRING_new();
750 GOSTerr(GOST_F_PUB_ENCODE_GOST_EC, ERR_R_MALLOC_FAILURE);
754 if (0 == ASN1_STRING_set(octet, databuf, data_len)) {
755 GOSTerr(GOST_F_PUB_ENCODE_GOST_EC, ERR_R_MALLOC_FAILURE);
759 ret = i2d_ASN1_OCTET_STRING(octet, &buf);
760 ASN1_BIT_STRING_free(octet);
769 OPENSSL_free(databuf);
773 return X509_PUBKEY_set0_param(pub, algobj, ptype, pval, buf, ret);
776 static int pub_cmp_gost_ec(const EVP_PKEY *a, const EVP_PKEY *b)
778 const EC_KEY *ea = EVP_PKEY_get0((EVP_PKEY *)a);
779 const EC_KEY *eb = EVP_PKEY_get0((EVP_PKEY *)b);
780 const EC_POINT *ka, *kb;
783 ka = EC_KEY_get0_public_key(ea);
784 kb = EC_KEY_get0_public_key(eb);
787 return (0 == EC_POINT_cmp(EC_KEY_get0_group(ea), ka, kb, NULL));
790 static int pkey_size_gost(const EVP_PKEY *pk)
795 switch (EVP_PKEY_base_id(pk)) {
796 case NID_id_GostR3410_94:
797 case NID_id_GostR3410_2001:
798 case NID_id_GostR3410_2012_256:
800 case NID_id_GostR3410_2012_512:
807 /* ---------------------- ASN1 METHOD for GOST MAC -------------------*/
808 static void mackey_free_gost(EVP_PKEY *pk)
810 OPENSSL_free(EVP_PKEY_get0(pk));
813 static int mac_ctrl_gost(EVP_PKEY *pkey, int op, long arg1, void *arg2)
816 case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
818 *(int *)arg2 = NID_id_Gost28147_89_MAC;
825 static int mac_ctrl_gost_12(EVP_PKEY *pkey, int op, long arg1, void *arg2)
828 case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
830 *(int *)arg2 = NID_gost_mac_12;
837 static int gost2001_param_encode(const EVP_PKEY *pkey, unsigned char **pder)
840 EC_GROUP_get_curve_name(EC_KEY_get0_group
841 (EVP_PKEY_get0((EVP_PKEY *)pkey)));
842 return i2d_ASN1_OBJECT(OBJ_nid2obj(nid), pder);
845 static int gost2001_param_decode(EVP_PKEY *pkey, const unsigned char **pder,
848 ASN1_OBJECT *obj = NULL;
850 if (d2i_ASN1_OBJECT(&obj, pder, derlen) == NULL) {
853 nid = OBJ_obj2nid(obj);
854 ASN1_OBJECT_free(obj);
856 return gost_decode_nid_params(pkey, NID_id_GostR3410_2001, nid);
859 /* ----------------------------------------------------------------------*/
860 int register_ameth_gost(int nid, EVP_PKEY_ASN1_METHOD **ameth,
861 const char *pemstr, const char *info)
863 *ameth = EVP_PKEY_asn1_new(nid, ASN1_PKEY_SIGPARAM_NULL, pemstr, info);
867 case NID_id_GostR3410_2001:
868 EVP_PKEY_asn1_set_free(*ameth, pkey_free_gost_ec);
869 EVP_PKEY_asn1_set_private(*ameth,
870 priv_decode_gost, priv_encode_gost,
873 EVP_PKEY_asn1_set_param(*ameth,
874 gost2001_param_decode, gost2001_param_encode,
875 param_missing_gost_ec, param_copy_gost_ec,
876 param_cmp_gost_ec, param_print_gost_ec);
877 EVP_PKEY_asn1_set_public(*ameth,
878 pub_decode_gost_ec, pub_encode_gost_ec,
879 pub_cmp_gost_ec, pub_print_gost_ec,
880 pkey_size_gost, pkey_bits_gost);
882 EVP_PKEY_asn1_set_ctrl(*ameth, pkey_ctrl_gost);
883 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
884 EVP_PKEY_asn1_set_security_bits(*ameth, pkey_bits_gost);
887 case NID_id_GostR3410_2012_256:
888 case NID_id_GostR3410_2012_512:
889 EVP_PKEY_asn1_set_free(*ameth, pkey_free_gost_ec);
890 EVP_PKEY_asn1_set_private(*ameth,
891 priv_decode_gost, priv_encode_gost,
894 EVP_PKEY_asn1_set_param(*ameth,
896 param_missing_gost_ec, param_copy_gost_ec,
897 param_cmp_gost_ec, NULL);
899 EVP_PKEY_asn1_set_public(*ameth,
900 pub_decode_gost_ec, pub_encode_gost_ec,
901 pub_cmp_gost_ec, pub_print_gost_ec,
902 pkey_size_gost, pkey_bits_gost);
904 EVP_PKEY_asn1_set_ctrl(*ameth, pkey_ctrl_gost);
905 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
906 EVP_PKEY_asn1_set_security_bits(*ameth, pkey_bits_gost);
909 case NID_id_Gost28147_89_MAC:
910 EVP_PKEY_asn1_set_free(*ameth, mackey_free_gost);
911 EVP_PKEY_asn1_set_ctrl(*ameth, mac_ctrl_gost);
913 case NID_gost_mac_12:
914 EVP_PKEY_asn1_set_free(*ameth, mackey_free_gost);
915 EVP_PKEY_asn1_set_ctrl(*ameth, mac_ctrl_gost_12);