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(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, X509_ALGOR *palg)
134 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, (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(EVP_PKEY_get0_EC_KEY(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, PKCS8_PRIV_KEY_INFO *p8inf)
334 const unsigned char *pkey_buf = NULL, *p = NULL;
336 BIGNUM *pk_num = NULL;
338 X509_ALGOR *palg = NULL;
339 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;
443 octet = ASN1_STRING_new();
444 ASN1_OCTET_STRING_set(octet, buf, key_len);
446 priv_len = i2d_ASN1_OCTET_STRING(octet, &priv_buf);
447 ASN1_STRING_free(octet);
450 return PKCS8_pkey_set0(p8, algobj, 0, V_ASN1_SEQUENCE, params,
454 /* --------- printing keys --------------------------------*/
455 static int print_gost_priv(BIO *out, const EVP_PKEY *pkey, int indent)
459 if (!BIO_indent(out, indent, 128))
461 BIO_printf(out, "Private key: ");
462 key = gost_get0_priv_key(pkey);
464 BIO_printf(out, "<undefined>");
467 BIO_printf(out, "\n");
472 static int print_gost_ec_pub(BIO *out, const EVP_PKEY *pkey, int indent)
476 const EC_POINT *pubkey;
477 const EC_GROUP *group;
478 EC_KEY *key = (EC_KEY *)EVP_PKEY_get0((EVP_PKEY *)pkey);
483 GOSTerr(GOST_F_PRINT_GOST_EC_PUB, ERR_R_MALLOC_FAILURE);
490 pubkey = (key) ? EC_KEY_get0_public_key(key) : NULL;
491 group = (key) ? EC_KEY_get0_group(key) : NULL;
492 if (!pubkey || !group)
495 if (!EC_POINT_get_affine_coordinates_GFp(group, pubkey, X, Y, ctx)) {
496 GOSTerr(GOST_F_PRINT_GOST_EC_PUB, ERR_R_EC_LIB);
499 if (!BIO_indent(out, indent, 128))
501 BIO_printf(out, "Public key:\n");
502 if (!BIO_indent(out, indent + 3, 128))
504 BIO_printf(out, "X:");
506 BIO_printf(out, "\n");
507 if (!BIO_indent(out, indent + 3, 128))
509 BIO_printf(out, "Y:");
511 BIO_printf(out, "\n");
520 static int print_gost_ec_param(BIO *out, const EVP_PKEY *pkey, int indent)
522 EC_KEY *ec = EVP_PKEY_get0((EVP_PKEY *)pkey);
523 const EC_GROUP *group = (ec) ? EC_KEY_get0_group(ec) : NULL;
529 param_nid = EC_GROUP_get_curve_name(group);
530 if (!BIO_indent(out, indent, 128))
532 BIO_printf(out, "Parameter set: %s\n", OBJ_nid2ln(param_nid));
537 static int print_gost_ec(BIO *out, const EVP_PKEY *pkey, int indent,
538 ASN1_PCTX *pctx, int type)
541 if (print_gost_priv(out, pkey, indent) == 0)
545 if (print_gost_ec_pub(out, pkey, indent) == 0)
549 return print_gost_ec_param(out, pkey, indent);
552 static int param_print_gost_ec(BIO *out, const EVP_PKEY *pkey, int indent,
555 return print_gost_ec(out, pkey, indent, pctx, 0);
558 static int pub_print_gost_ec(BIO *out, const EVP_PKEY *pkey, int indent,
561 return print_gost_ec(out, pkey, indent, pctx, 1);
564 static int priv_print_gost_ec(BIO *out, const EVP_PKEY *pkey, int indent,
567 return print_gost_ec(out, pkey, indent, pctx, 2);
570 /* ---------------------------------------------------------------------*/
571 static int param_missing_gost_ec(const EVP_PKEY *pk)
573 const EC_KEY *ec = EVP_PKEY_get0((EVP_PKEY *)pk);
576 if (!EC_KEY_get0_group(ec))
581 static int param_copy_gost_ec(EVP_PKEY *to, const EVP_PKEY *from)
583 EC_KEY *eto = EVP_PKEY_get0(to);
584 const EC_KEY *efrom = EVP_PKEY_get0((EVP_PKEY *)from);
585 if (EVP_PKEY_base_id(from) != EVP_PKEY_base_id(to)) {
586 GOSTerr(GOST_F_PARAM_COPY_GOST_EC, GOST_R_INCOMPATIBLE_ALGORITHMS);
590 GOSTerr(GOST_F_PARAM_COPY_GOST_EC, GOST_R_KEY_PARAMETERS_MISSING);
596 GOSTerr(GOST_F_PARAM_COPY_GOST_EC, ERR_R_MALLOC_FAILURE);
599 if (!EVP_PKEY_assign(to, EVP_PKEY_base_id(from), eto)) {
600 GOSTerr(GOST_F_PARAM_COPY_GOST_EC, ERR_R_INTERNAL_ERROR);
605 if (!EC_KEY_set_group(eto, EC_KEY_get0_group(efrom))) {
606 GOSTerr(GOST_F_PARAM_COPY_GOST_EC, ERR_R_INTERNAL_ERROR);
609 if (EC_KEY_get0_private_key(eto)) {
610 return gost_ec_compute_public(eto);
615 static int param_cmp_gost_ec(const EVP_PKEY *a, const EVP_PKEY *b)
617 const EC_GROUP *group_a, *group_b;
618 EC_KEY *ec_a = EVP_PKEY_get0((EVP_PKEY *)a);
619 EC_KEY *ec_b = EVP_PKEY_get0((EVP_PKEY *)b);
623 group_a = EC_KEY_get0_group(ec_a);
624 group_b = EC_KEY_get0_group(ec_b);
625 if (!group_a || !group_b)
628 if (EC_GROUP_get_curve_name(group_a) == EC_GROUP_get_curve_name(group_b)) {
634 /* ---------- Public key functions * --------------------------------------*/
635 static int pub_decode_gost_ec(EVP_PKEY *pk, X509_PUBKEY *pub)
637 X509_ALGOR *palg = NULL;
638 const unsigned char *pubkey_buf = NULL;
639 unsigned char *databuf;
640 ASN1_OBJECT *palgobj = NULL;
644 ASN1_OCTET_STRING *octet = NULL;
646 const EC_GROUP *group;
648 if (!X509_PUBKEY_get0_param(&palgobj, &pubkey_buf, &pub_len, &palg, pub))
650 EVP_PKEY_assign(pk, OBJ_obj2nid(palgobj), NULL);
651 if (!decode_gost_algor_params(pk, palg))
653 group = EC_KEY_get0_group(EVP_PKEY_get0(pk));
654 octet = d2i_ASN1_OCTET_STRING(NULL, &pubkey_buf, pub_len);
656 GOSTerr(GOST_F_PUB_DECODE_GOST_EC, ERR_R_MALLOC_FAILURE);
659 databuf = OPENSSL_malloc(octet->length);
660 if (databuf == NULL) {
661 GOSTerr(GOST_F_PUB_DECODE_GOST_EC, ERR_R_MALLOC_FAILURE);
662 ASN1_OCTET_STRING_free(octet);
665 for (i = 0, j = octet->length - 1; i < octet->length; i++, j--) {
666 databuf[j] = octet->data[i];
668 len = octet->length / 2;
669 ASN1_OCTET_STRING_free(octet);
671 Y = BN_bin2bn(databuf, len, NULL);
672 X = BN_bin2bn(databuf + len, len, NULL);
673 OPENSSL_free(databuf);
674 pub_key = EC_POINT_new(group);
675 if (!EC_POINT_set_affine_coordinates_GFp(group, pub_key, X, Y, NULL)) {
676 GOSTerr(GOST_F_PUB_DECODE_GOST_EC, ERR_R_EC_LIB);
677 EC_POINT_free(pub_key);
684 if (!EC_KEY_set_public_key(EVP_PKEY_get0(pk), pub_key)) {
685 GOSTerr(GOST_F_PUB_DECODE_GOST_EC, ERR_R_EC_LIB);
686 EC_POINT_free(pub_key);
689 EC_POINT_free(pub_key);
694 static int pub_encode_gost_ec(X509_PUBKEY *pub, const EVP_PKEY *pk)
696 ASN1_OBJECT *algobj = NULL;
697 ASN1_OCTET_STRING *octet = NULL;
699 unsigned char *buf = NULL, *databuf = NULL, *sptr;
700 int i, j, data_len, ret = -1;
701 const EC_POINT *pub_key;
702 BIGNUM *X = NULL, *Y = NULL, *order = NULL;
703 const EC_KEY *ec = EVP_PKEY_get0((EVP_PKEY *)pk);
704 int ptype = V_ASN1_UNDEF;
706 algobj = OBJ_nid2obj(EVP_PKEY_base_id(pk));
707 if (EVP_PKEY_save_parameters((EVP_PKEY *)pk, -1)) {
708 ASN1_STRING *params = encode_gost_algor_params(pk);
710 ptype = V_ASN1_SEQUENCE;
714 GOSTerr(GOST_F_PUB_ENCODE_GOST_EC, ERR_R_MALLOC_FAILURE);
717 EC_GROUP_get_order(EC_KEY_get0_group(ec), order, NULL);
718 pub_key = EC_KEY_get0_public_key(ec);
720 GOSTerr(GOST_F_PUB_ENCODE_GOST_EC, GOST_R_PUBLIC_KEY_UNDEFINED);
726 GOSTerr(GOST_F_PUB_ENCODE_GOST_EC, ERR_R_MALLOC_FAILURE);
729 if (!EC_POINT_get_affine_coordinates_GFp(EC_KEY_get0_group(ec),
730 pub_key, X, Y, NULL)) {
731 GOSTerr(GOST_F_PUB_ENCODE_GOST_EC, ERR_R_INTERNAL_ERROR);
734 data_len = 2 * BN_num_bytes(order);
735 databuf = OPENSSL_malloc(data_len);
736 if (databuf == NULL) {
737 GOSTerr(GOST_F_PUB_ENCODE_GOST_EC, ERR_R_MALLOC_FAILURE);
740 memset(databuf, 0, data_len);
742 store_bignum(X, databuf + data_len / 2, data_len / 2);
743 store_bignum(Y, databuf, data_len / 2);
745 octet = ASN1_OCTET_STRING_new();
747 GOSTerr(GOST_F_PUB_ENCODE_GOST_EC, ERR_R_MALLOC_FAILURE);
750 ASN1_STRING_set(octet, NULL, data_len);
751 sptr = ASN1_STRING_data(octet);
752 for (i = 0, j = data_len - 1; i < data_len; i++, j--) {
753 sptr[i] = databuf[j];
756 ret = i2d_ASN1_OCTET_STRING(octet, &buf);
757 ASN1_BIT_STRING_free(octet);
766 OPENSSL_free(databuf);
770 return X509_PUBKEY_set0_param(pub, algobj, ptype, pval, buf, ret);
773 static int pub_cmp_gost_ec(const EVP_PKEY *a, const EVP_PKEY *b)
775 const EC_KEY *ea = EVP_PKEY_get0((EVP_PKEY *)a);
776 const EC_KEY *eb = EVP_PKEY_get0((EVP_PKEY *)b);
777 const EC_POINT *ka, *kb;
780 ka = EC_KEY_get0_public_key(ea);
781 kb = EC_KEY_get0_public_key(eb);
784 return (0 == EC_POINT_cmp(EC_KEY_get0_group(ea), ka, kb, NULL));
787 static int pkey_size_gost(const EVP_PKEY *pk)
792 switch (EVP_PKEY_base_id(pk)) {
793 case NID_id_GostR3410_94:
794 case NID_id_GostR3410_2001:
795 case NID_id_GostR3410_2012_256:
797 case NID_id_GostR3410_2012_512:
804 /* ---------------------- ASN1 METHOD for GOST MAC -------------------*/
805 static void mackey_free_gost(EVP_PKEY *pk)
807 OPENSSL_free(EVP_PKEY_get0(pk));
810 static int mac_ctrl_gost(EVP_PKEY *pkey, int op, long arg1, void *arg2)
813 case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
815 *(int *)arg2 = NID_id_Gost28147_89_MAC;
822 static int mac_ctrl_gost_12(EVP_PKEY *pkey, int op, long arg1, void *arg2)
825 case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
827 *(int *)arg2 = NID_gost_mac_12;
834 static int gost2001_param_encode(const EVP_PKEY *pkey, unsigned char **pder)
837 EC_GROUP_get_curve_name(EC_KEY_get0_group
838 (EVP_PKEY_get0((EVP_PKEY *)pkey)));
839 return i2d_ASN1_OBJECT(OBJ_nid2obj(nid), pder);
842 static int gost2001_param_decode(EVP_PKEY *pkey, const unsigned char **pder,
845 ASN1_OBJECT *obj = NULL;
847 if (d2i_ASN1_OBJECT(&obj, pder, derlen) == NULL) {
850 nid = OBJ_obj2nid(obj);
851 ASN1_OBJECT_free(obj);
853 return gost_decode_nid_params(pkey, NID_id_GostR3410_2001, nid);
856 /* ----------------------------------------------------------------------*/
857 int register_ameth_gost(int nid, EVP_PKEY_ASN1_METHOD **ameth,
858 const char *pemstr, const char *info)
860 *ameth = EVP_PKEY_asn1_new(nid, ASN1_PKEY_SIGPARAM_NULL, pemstr, info);
864 case NID_id_GostR3410_2001:
865 EVP_PKEY_asn1_set_free(*ameth, pkey_free_gost_ec);
866 EVP_PKEY_asn1_set_private(*ameth,
867 priv_decode_gost, priv_encode_gost,
870 EVP_PKEY_asn1_set_param(*ameth,
871 gost2001_param_decode, gost2001_param_encode,
872 param_missing_gost_ec, param_copy_gost_ec,
873 param_cmp_gost_ec, param_print_gost_ec);
874 EVP_PKEY_asn1_set_public(*ameth,
875 pub_decode_gost_ec, pub_encode_gost_ec,
876 pub_cmp_gost_ec, pub_print_gost_ec,
877 pkey_size_gost, pkey_bits_gost);
879 EVP_PKEY_asn1_set_ctrl(*ameth, pkey_ctrl_gost);
880 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
881 EVP_PKEY_asn1_set_security_bits(*ameth, pkey_bits_gost);
884 case NID_id_GostR3410_2012_256:
885 case NID_id_GostR3410_2012_512:
886 EVP_PKEY_asn1_set_free(*ameth, pkey_free_gost_ec);
887 EVP_PKEY_asn1_set_private(*ameth,
888 priv_decode_gost, priv_encode_gost,
891 EVP_PKEY_asn1_set_param(*ameth,
893 param_missing_gost_ec, param_copy_gost_ec,
894 param_cmp_gost_ec, NULL);
896 EVP_PKEY_asn1_set_public(*ameth,
897 pub_decode_gost_ec, pub_encode_gost_ec,
898 pub_cmp_gost_ec, pub_print_gost_ec,
899 pkey_size_gost, pkey_bits_gost);
901 EVP_PKEY_asn1_set_ctrl(*ameth, pkey_ctrl_gost);
902 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
903 EVP_PKEY_asn1_set_security_bits(*ameth, pkey_bits_gost);
906 case NID_id_Gost28147_89_MAC:
907 EVP_PKEY_asn1_set_free(*ameth, mackey_free_gost);
908 EVP_PKEY_asn1_set_ctrl(*ameth, mac_ctrl_gost);
910 case NID_gost_mac_12:
911 EVP_PKEY_asn1_set_free(*ameth, mackey_free_gost);
912 EVP_PKEY_asn1_set_ctrl(*ameth, mac_ctrl_gost_12);