1 /**********************************************************************
3 * Copyright (c) 2005-2013 Cryptocom LTD *
4 * This file is distributed under the same license as OpenSSL *
6 * Implementation of RFC 4357 (GOST R 34.10) Publick key method *
8 * Requires OpenSSL 1.0.0+ for compilation *
9 **********************************************************************/
10 #include <openssl/evp.h>
11 #include <openssl/objects.h>
12 #include <openssl/ec.h>
13 #include <openssl/err.h>
14 #include <openssl/x509v3.h> /* For string_to_hex */
15 #include <openssl/opensslv.h> /* For OPENSSL_VERSION_MAJOR */
20 #include "e_gost_err.h"
23 #ifdef OPENSSL_VERSION_MAJOR
25 #define ossl3_const const
28 /* -----init, cleanup, copy - uniform for all algs --------------*/
29 /* Allocates new gost_pmeth_data structure and assigns it as data */
30 static int pkey_gost_init(EVP_PKEY_CTX *ctx)
32 struct gost_pmeth_data *data;
33 EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
35 data = OPENSSL_malloc(sizeof(*data));
38 memset(data, 0, sizeof(*data));
39 if (pkey && EVP_PKEY_get0(pkey)) {
40 switch (EVP_PKEY_base_id(pkey)) {
41 case NID_id_GostR3410_2001:
42 case NID_id_GostR3410_2001DH:
43 case NID_id_GostR3410_2012_256:
44 case NID_id_GostR3410_2012_512:
46 const EC_GROUP *group =
47 EC_KEY_get0_group(EVP_PKEY_get0((EVP_PKEY *)pkey));
49 data->sign_param_nid = EC_GROUP_get_curve_name(group);
59 EVP_PKEY_CTX_set_data(ctx, data);
63 /* Copies contents of gost_pmeth_data structure */
64 static int pkey_gost_copy(EVP_PKEY_CTX *dst, ossl3_const EVP_PKEY_CTX *src)
66 struct gost_pmeth_data *dst_data, *src_data;
67 if (!pkey_gost_init(dst)) {
70 src_data = EVP_PKEY_CTX_get_data(src);
71 dst_data = EVP_PKEY_CTX_get_data(dst);
72 if (!src_data || !dst_data)
75 *dst_data = *src_data;
80 /* Frees up gost_pmeth_data structure */
81 static void pkey_gost_cleanup(EVP_PKEY_CTX *ctx)
83 struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
90 * signature schemes(hex) NamedGroup(hex) Curve Identifier param_nid paramset
91 * (draft-smyshlyaev-tls13) (gost-engine)
92 * --------------------------------------------------------------------------------------------------------------------------------------------------
93 * gostr34102012_256a(0x0709) GC256A(0x22) id-tc26-gost-3410-2012-256-paramSetA NID_id_tc26_gost_3410_2012_256_paramSetA TCA
94 * gostr34102012_256b(0x070A) GC256B(0x23) id-GostR3410-2001-CryptoPro-A-ParamSet NID_id_GostR3410_2001_CryptoPro_A_ParamSet A
95 * *id-GostR3410_2001-CryptoPro-XchA-ParamSet NID_id_GostR3410_2001_CryptoPro_XchA_ParamSet XA
96 * *id-tc26-gost-3410-2012-256-paramSetB NID_id_tc26_gost_3410_2012_256_paramSetB TCB
97 * gostr34102012_256c(0x070B) GC256C(0x24) id-GostR3410-2001-CryptoPro-B-ParamSet NID_id_GostR3410_2001_CryptoPro_B_ParamSet B
98 * *id-tc26-gost-3410-2012-256-paramSetC NID_id_tc26_gost_3410_2012_256_paramSetC TCC
99 * gostr34102012_256d(0x070C) GC256D(0x25) id-GostR3410-2001-CryptoPro-C-ParamSet NID_id_GostR3410_2001_CryptoPro_C_ParamSet C
100 * *id-GostR3410-2001-CryptoPro-XchB-ParamSet NID_id_GostR3410_2001_CryptoPro_XchB_ParamSet XB
101 * *id-tc26-gost-3410-2012-256-paramSetD NID_id_tc26_gost_3410_2012_256_paramSetD TCD
102 * gostr34102012_512a(0x070D) GC512A(0x26) id-tc26-gost-3410-12-512-paramSetA NID_id_tc26_gost_3410_2012_512_paramSetA A
103 * gostr34102012_512b(0x070E) GC512B(0x27) id-tc26-gost-3410-12-512-paramSetB NID_id_tc26_gost_3410_2012_512_paramSetB B
104 * gostr34102012_512c(0x070F) GC512C(0x28) id-tc26-gost-3410-2012-512-paramSetC NID_id_tc26_gost_3410_2012_512_paramSetC C
108 typedef struct paramset_match_tbl_st {
109 int lookup_id; // SIGALG_LOOKUP.curve
111 } PARAMSET_MATCH_TBL;
113 static PARAMSET_MATCH_TBL paramset_matches[] = {
114 { NID_id_tc26_gost_3410_2012_256_paramSetA, NID_id_tc26_gost_3410_2012_256_paramSetA },
115 { NID_id_tc26_gost_3410_2012_256_paramSetB, NID_id_GostR3410_2001_CryptoPro_A_ParamSet },
116 { NID_id_tc26_gost_3410_2012_256_paramSetB, NID_id_GostR3410_2001_CryptoPro_XchA_ParamSet },
117 { NID_id_tc26_gost_3410_2012_256_paramSetB, NID_id_tc26_gost_3410_2012_256_paramSetB },
118 { NID_id_tc26_gost_3410_2012_256_paramSetC, NID_id_GostR3410_2001_CryptoPro_B_ParamSet },
119 { NID_id_tc26_gost_3410_2012_256_paramSetC, NID_id_tc26_gost_3410_2012_256_paramSetC },
120 { NID_id_tc26_gost_3410_2012_256_paramSetD, NID_id_GostR3410_2001_CryptoPro_C_ParamSet },
121 { NID_id_tc26_gost_3410_2012_256_paramSetD, NID_id_GostR3410_2001_CryptoPro_XchB_ParamSet },
122 { NID_id_tc26_gost_3410_2012_256_paramSetD, NID_id_tc26_gost_3410_2012_256_paramSetD },
123 { NID_id_tc26_gost_3410_2012_512_paramSetA, NID_id_tc26_gost_3410_2012_512_paramSetA },
124 { NID_id_tc26_gost_3410_2012_512_paramSetB, NID_id_tc26_gost_3410_2012_512_paramSetB },
125 { NID_id_tc26_gost_3410_2012_512_paramSetC, NID_id_tc26_gost_3410_2012_512_paramSetC }
129 # define OSSL_NELEM(x) (sizeof(x)/sizeof((x)[0]))
132 /* --------------------- control functions ------------------------------*/
133 static int pkey_gost_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
135 struct gost_pmeth_data *pctx =
136 (struct gost_pmeth_data *)EVP_PKEY_CTX_get_data(ctx);
141 case EVP_PKEY_CTRL_PARAMS_MATCH:
143 int param_nid = pctx->sign_param_nid;
146 // key is incomparable by 'params' or there is no matches
147 if (param_nid == 0 || p1 == 0)
150 for (i = 0; i < OSSL_NELEM(paramset_matches); i++) {
151 if (paramset_matches[i].lookup_id == p1
152 && paramset_matches[i].param_nid == param_nid)
158 case EVP_PKEY_CTRL_MD:
160 EVP_PKEY *key = EVP_PKEY_CTX_get0_pkey(ctx);
161 int pkey_nid = (key == NULL) ? NID_undef : EVP_PKEY_base_id(key);
163 OPENSSL_assert(p2 != NULL);
165 switch (EVP_MD_type((const EVP_MD *)p2)) {
166 case NID_id_GostR3411_94:
167 if (pkey_nid == NID_id_GostR3410_2001
168 || pkey_nid == NID_id_GostR3410_2001DH
169 || pkey_nid == NID_id_GostR3410_94) {
170 pctx->md = (EVP_MD *)p2;
175 case NID_id_GostR3411_2012_256:
176 if (pkey_nid == NID_id_GostR3410_2012_256) {
177 pctx->md = (EVP_MD *)p2;
182 case NID_id_GostR3411_2012_512:
183 if (pkey_nid == NID_id_GostR3410_2012_512) {
184 pctx->md = (EVP_MD *)p2;
190 GOSTerr(GOST_F_PKEY_GOST_CTRL, GOST_R_INVALID_DIGEST_TYPE);
194 case EVP_PKEY_CTRL_GET_MD:
195 *(const EVP_MD **)p2 = pctx->md;
198 case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
199 case EVP_PKEY_CTRL_PKCS7_DECRYPT:
200 case EVP_PKEY_CTRL_PKCS7_SIGN:
201 case EVP_PKEY_CTRL_DIGESTINIT:
202 #ifndef OPENSSL_NO_CMS
203 case EVP_PKEY_CTRL_CMS_ENCRYPT:
204 case EVP_PKEY_CTRL_CMS_DECRYPT:
205 case EVP_PKEY_CTRL_CMS_SIGN:
209 case EVP_PKEY_CTRL_GOST_PARAMSET:
210 pctx->sign_param_nid = (int)p1;
212 case EVP_PKEY_CTRL_SET_IV:
213 if (p1 > sizeof(pctx->shared_ukm) || !p2) {
214 GOSTerr(GOST_F_PKEY_GOST_CTRL, GOST_R_UKM_NOT_SET);
217 memcpy(pctx->shared_ukm, p2, (int)p1);
218 pctx->shared_ukm_size = p1;
220 case EVP_PKEY_CTRL_SET_VKO:
222 case 0: /* switch to KEG */
223 case NID_id_GostR3411_2012_256:
224 case NID_id_GostR3411_2012_512:
227 GOSTerr(GOST_F_PKEY_GOST_CTRL, GOST_R_INVALID_DIGEST_TYPE);
230 pctx->vko_dgst_nid = p1;
232 case EVP_PKEY_CTRL_CIPHER:
234 case NID_magma_ctr_acpkm:
235 case NID_magma_ctr_acpkm_omac:
237 pctx->cipher_nid = NID_magma_ctr;
239 case NID_kuznyechik_ctr_acpkm:
240 case NID_kuznyechik_ctr_acpkm_omac:
241 case NID_kuznyechik_ctr:
242 pctx->cipher_nid = NID_kuznyechik_ctr;
245 pctx->cipher_nid = p1;
249 case EVP_PKEY_CTRL_PEER_KEY:
250 if (p1 == 0 || p1 == 1) /* call from EVP_PKEY_derive_set_peer */
252 if (p1 == 2) /* TLS: peer key used? */
253 return pctx->peer_key_used;
254 if (p1 == 3) /* TLS: peer key used! */
255 return (pctx->peer_key_used = 1);
259 GOSTerr(GOST_F_PKEY_GOST_CTRL, GOST_R_CTRL_CALL_FAILED);
263 static int pkey_gost_ec_ctrl_str_common(EVP_PKEY_CTX *ctx,
264 const char *type, const char *value)
266 if (0 == strcmp(type, ukm_ctrl_string)) {
267 unsigned char ukm_buf[32], *tmp = NULL;
269 tmp = OPENSSL_hexstr2buf(value, &len);
275 GOSTerr(GOST_F_PKEY_GOST_EC_CTRL_STR_COMMON, GOST_R_CTRL_CALL_FAILED);
278 memcpy(ukm_buf, tmp, len);
281 return pkey_gost_ctrl(ctx, EVP_PKEY_CTRL_SET_IV, len, ukm_buf);
282 } else if (strcmp(type, vko_ctrl_string) == 0) {
283 int bits = atoi(value);
284 int vko_dgst_nid = 0;
287 vko_dgst_nid = NID_id_GostR3411_2012_256;
288 else if (bits == 512)
289 vko_dgst_nid = NID_id_GostR3411_2012_512;
290 else if (bits != 0) {
291 GOSTerr(GOST_F_PKEY_GOST_EC_CTRL_STR_COMMON, GOST_R_INVALID_DIGEST_TYPE);
294 return pkey_gost_ctrl(ctx, EVP_PKEY_CTRL_SET_VKO, vko_dgst_nid, NULL);
299 static int pkey_gost_ec_ctrl_str_256(EVP_PKEY_CTX *ctx,
300 const char *type, const char *value)
302 if (strcmp(type, param_ctrl_string) == 0) {
308 if (strlen(value) == 1) {
309 switch (toupper((unsigned char)value[0])) {
311 param_nid = NID_id_GostR3410_2001_CryptoPro_A_ParamSet;
314 param_nid = NID_id_GostR3410_2001_CryptoPro_B_ParamSet;
317 param_nid = NID_id_GostR3410_2001_CryptoPro_C_ParamSet;
320 param_nid = NID_id_GostR3410_2001_TestParamSet;
325 } else if ((strlen(value) == 2)
326 && (toupper((unsigned char)value[0]) == 'X')) {
327 switch (toupper((unsigned char)value[1])) {
329 param_nid = NID_id_GostR3410_2001_CryptoPro_XchA_ParamSet;
332 param_nid = NID_id_GostR3410_2001_CryptoPro_XchB_ParamSet;
337 } else if ((strlen(value) == 3)
338 && (toupper((unsigned char)value[0]) == 'T')
339 && (toupper((unsigned char)value[1]) == 'C')) {
340 switch (toupper((unsigned char)value[2])) {
342 param_nid = NID_id_tc26_gost_3410_2012_256_paramSetA;
345 param_nid = NID_id_tc26_gost_3410_2012_256_paramSetB;
348 param_nid = NID_id_tc26_gost_3410_2012_256_paramSetC;
351 param_nid = NID_id_tc26_gost_3410_2012_256_paramSetD;
357 R3410_ec_params *p = R3410_2001_paramset;
358 param_nid = OBJ_txt2nid(value);
359 if (param_nid == NID_undef) {
362 for (; p->nid != NID_undef; p++) {
363 if (p->nid == param_nid)
366 if (p->nid == NID_undef) {
367 GOSTerr(GOST_F_PKEY_GOST_EC_CTRL_STR_256,
368 GOST_R_INVALID_PARAMSET);
373 return pkey_gost_ctrl(ctx, EVP_PKEY_CTRL_GOST_PARAMSET,
377 return pkey_gost_ec_ctrl_str_common(ctx, type, value);
380 static int pkey_gost_ec_ctrl_str_512(EVP_PKEY_CTX *ctx,
381 const char *type, const char *value)
383 int param_nid = NID_undef;
385 if (strcmp(type, param_ctrl_string))
386 return pkey_gost_ec_ctrl_str_common(ctx, type, value);
391 if (strlen(value) == 1) {
392 switch (toupper((unsigned char)value[0])) {
394 param_nid = NID_id_tc26_gost_3410_2012_512_paramSetA;
398 param_nid = NID_id_tc26_gost_3410_2012_512_paramSetB;
402 param_nid = NID_id_tc26_gost_3410_2012_512_paramSetC;
409 R3410_ec_params *p = R3410_2012_512_paramset;
410 param_nid = OBJ_txt2nid(value);
411 if (param_nid == NID_undef)
414 while (p->nid != NID_undef && p->nid != param_nid)
417 if (p->nid == NID_undef) {
418 GOSTerr(GOST_F_PKEY_GOST_EC_CTRL_STR_512,
419 GOST_R_INVALID_PARAMSET);
424 return pkey_gost_ctrl(ctx, EVP_PKEY_CTRL_GOST_PARAMSET, param_nid, NULL);
427 /* --------------------- key generation --------------------------------*/
429 static int pkey_gost_paramgen_init(EVP_PKEY_CTX *ctx)
434 static int pkey_gost2001_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
436 struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
439 if (!data || data->sign_param_nid == NID_undef) {
440 GOSTerr(GOST_F_PKEY_GOST2001_PARAMGEN, GOST_R_NO_PARAMETERS_SET);
445 if (!fill_GOST_EC_params(ec, data->sign_param_nid)
446 || !EVP_PKEY_assign(pkey, NID_id_GostR3410_2001, ec)) {
453 static int pkey_gost2012_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
455 struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
459 if (!data || data->sign_param_nid == NID_undef) {
460 GOSTerr(GOST_F_PKEY_GOST2012_PARAMGEN, GOST_R_NO_PARAMETERS_SET);
465 if (!fill_GOST_EC_params(ec, data->sign_param_nid)) {
470 switch (data->sign_param_nid) {
471 case NID_id_tc26_gost_3410_2012_512_paramSetA:
472 case NID_id_tc26_gost_3410_2012_512_paramSetB:
473 case NID_id_tc26_gost_3410_2012_512_paramSetC:
474 case NID_id_tc26_gost_3410_2012_512_paramSetTest:
476 (EVP_PKEY_assign(pkey, NID_id_GostR3410_2012_512, ec)) ? 1 : 0;
479 case NID_id_GostR3410_2001_CryptoPro_A_ParamSet:
480 case NID_id_GostR3410_2001_CryptoPro_B_ParamSet:
481 case NID_id_GostR3410_2001_CryptoPro_C_ParamSet:
482 case NID_id_GostR3410_2001_CryptoPro_XchA_ParamSet:
483 case NID_id_GostR3410_2001_CryptoPro_XchB_ParamSet:
484 case NID_id_GostR3410_2001_TestParamSet:
485 case NID_id_tc26_gost_3410_2012_256_paramSetA:
486 case NID_id_tc26_gost_3410_2012_256_paramSetB:
487 case NID_id_tc26_gost_3410_2012_256_paramSetC:
488 case NID_id_tc26_gost_3410_2012_256_paramSetD:
490 (EVP_PKEY_assign(pkey, NID_id_GostR3410_2012_256, ec)) ? 1 : 0;
503 /* ----------- keygen callbacks --------------------------------------*/
504 /* Generates GOST_R3410 2001 key and assigns it using specified type */
505 static int pkey_gost2001cp_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
508 if (!pkey_gost2001_paramgen(ctx, pkey))
510 ec = EVP_PKEY_get0(pkey);
515 /* Generates GOST_R3410 2012 key and assigns it using specified type */
516 static int pkey_gost2012cp_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
518 if (!pkey_gost2012_paramgen(ctx, pkey))
521 gost_ec_keygen(EVP_PKEY_get0(pkey));
525 /* ----------- sign callbacks --------------------------------------*/
527 * Packs signature according to Cryptopro rules
528 * and frees up ECDSA_SIG structure
530 int pack_sign_cp(ECDSA_SIG *s, int order, unsigned char *sig, size_t *siglen)
532 const BIGNUM *sig_r = NULL, *sig_s = NULL;
533 ECDSA_SIG_get0(s, &sig_r, &sig_s);
535 memset(sig, 0, *siglen);
536 store_bignum(sig_s, sig, order);
537 store_bignum(sig_r, sig + order, order);
542 static int pkey_gost_ec_cp_sign(EVP_PKEY_CTX *ctx, unsigned char *sig,
543 size_t *siglen, const unsigned char *tbs,
546 ECDSA_SIG *unpacked_sig = NULL;
547 EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
555 switch (EVP_PKEY_base_id(pkey)) {
556 case NID_id_GostR3410_2001:
557 case NID_id_GostR3410_2001DH:
558 case NID_id_GostR3410_2012_256:
561 case NID_id_GostR3410_2012_512:
572 unpacked_sig = gost_ec_sign(tbs, tbs_len, EVP_PKEY_get0(pkey));
576 return pack_sign_cp(unpacked_sig, order / 2, sig, siglen);
579 /* ------------------- verify callbacks ---------------------------*/
580 /* Unpack signature according to cryptopro rules */
581 ECDSA_SIG *unpack_cp_signature(const unsigned char *sigbuf, size_t siglen)
584 BIGNUM *r = NULL, *s = NULL;
586 sig = ECDSA_SIG_new();
588 GOSTerr(GOST_F_UNPACK_CP_SIGNATURE, ERR_R_MALLOC_FAILURE);
591 s = BN_bin2bn(sigbuf, siglen / 2, NULL);
592 r = BN_bin2bn(sigbuf + siglen / 2, siglen / 2, NULL);
593 ECDSA_SIG_set0(sig, r, s);
597 static int pkey_gost_ec_cp_verify(EVP_PKEY_CTX *ctx, const unsigned char *sig,
598 size_t siglen, const unsigned char *tbs,
602 EVP_PKEY *pub_key = EVP_PKEY_CTX_get0_pkey(ctx);
603 ECDSA_SIG *s = (sig) ? unpack_cp_signature(sig, siglen) : NULL;
607 fprintf(stderr, "R=");
608 BN_print_fp(stderr, ECDSA_SIG_get0_r(s));
609 fprintf(stderr, "\nS=");
610 BN_print_fp(stderr, ECDSA_SIG_get0_s(s));
611 fprintf(stderr, "\n");
614 ok = gost_ec_verify(tbs, tbs_len, s, EVP_PKEY_get0(pub_key));
619 /* ------------- encrypt init -------------------------------------*/
620 /* Generates ephermeral key */
621 static int pkey_gost_encrypt_init(EVP_PKEY_CTX *ctx)
626 /* --------------- Derive init ------------------------------------*/
627 static int pkey_gost_derive_init(EVP_PKEY_CTX *ctx)
632 /* -------- PKEY_METHOD for GOST MAC algorithm --------------------*/
633 static int pkey_gost_mac_init(EVP_PKEY_CTX *ctx)
635 struct gost_mac_pmeth_data *data = OPENSSL_malloc(sizeof(*data));
636 EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
640 memset(data, 0, sizeof(*data));
642 data->mac_param_nid = NID_undef;
645 struct gost_mac_key *key = EVP_PKEY_get0(pkey);
647 data->mac_param_nid = key->mac_param_nid;
648 data->mac_size = key->mac_size;
652 EVP_PKEY_CTX_set_data(ctx, data);
656 static int pkey_gost_omac_init(EVP_PKEY_CTX *ctx, size_t mac_size)
658 struct gost_mac_pmeth_data *data = OPENSSL_malloc(sizeof(*data));
659 EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
663 memset(data, 0, sizeof(*data));
664 data->mac_size = mac_size;
665 data->mac_param_nid = NID_undef;
668 struct gost_mac_key *key = EVP_PKEY_get0(pkey);
670 data->mac_param_nid = key->mac_param_nid;
671 data->mac_size = key->mac_size;
675 EVP_PKEY_CTX_set_data(ctx, data);
679 static int pkey_gost_magma_mac_init(EVP_PKEY_CTX *ctx)
681 return pkey_gost_omac_init(ctx, 8);
684 static int pkey_gost_grasshopper_mac_init(EVP_PKEY_CTX *ctx)
686 return pkey_gost_omac_init(ctx, 16);
689 static void pkey_gost_mac_cleanup(EVP_PKEY_CTX *ctx)
691 struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
696 static int pkey_gost_mac_copy(EVP_PKEY_CTX *dst, ossl3_const EVP_PKEY_CTX *src)
698 struct gost_mac_pmeth_data *dst_data, *src_data;
699 if (!pkey_gost_mac_init(dst)) {
702 src_data = EVP_PKEY_CTX_get_data(src);
703 dst_data = EVP_PKEY_CTX_get_data(dst);
704 if (!src_data || !dst_data)
707 *dst_data = *src_data;
711 static int pkey_gost_mac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
713 struct gost_mac_pmeth_data *data =
714 (struct gost_mac_pmeth_data *)EVP_PKEY_CTX_get_data(ctx);
717 case EVP_PKEY_CTRL_MD:
719 int nid = EVP_MD_type((const EVP_MD *)p2);
720 if (nid != NID_id_Gost28147_89_MAC && nid != NID_gost_mac_12) {
721 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,
722 GOST_R_INVALID_DIGEST_TYPE);
725 data->md = (EVP_MD *)p2;
729 case EVP_PKEY_CTRL_GET_MD:
730 *(const EVP_MD **)p2 = data->md;
733 case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
734 case EVP_PKEY_CTRL_PKCS7_DECRYPT:
735 case EVP_PKEY_CTRL_PKCS7_SIGN:
737 case EVP_PKEY_CTRL_SET_MAC_KEY:
739 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL, GOST_R_INVALID_MAC_KEY_LENGTH);
743 memcpy(data->key, p2, 32);
746 case EVP_PKEY_CTRL_GOST_PARAMSET:
748 struct gost_cipher_info *param = p2;
749 data->mac_param_nid = param->nid;
752 case EVP_PKEY_CTRL_DIGESTINIT:
754 EVP_MD_CTX *mctx = p2;
755 if (!data->key_set) {
756 struct gost_mac_key *key;
757 EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
759 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,
760 GOST_R_MAC_KEY_NOT_SET);
763 key = EVP_PKEY_get0(pkey);
765 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,
766 GOST_R_MAC_KEY_NOT_SET);
769 return EVP_MD_meth_get_ctrl(EVP_MD_CTX_md(mctx))
770 (mctx, EVP_MD_CTRL_SET_KEY, 0, key);
772 return EVP_MD_meth_get_ctrl(EVP_MD_CTX_md(mctx))
773 (mctx, EVP_MD_CTRL_SET_KEY, 32, &(data->key));
776 case EVP_PKEY_CTRL_MAC_LEN:
778 if (p1 < 1 || p1 > 8) {
780 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL, GOST_R_INVALID_MAC_SIZE);
790 static int pkey_gost_mac_ctrl_str(EVP_PKEY_CTX *ctx,
791 const char *type, const char *value)
793 if (strcmp(type, key_ctrl_string) == 0) {
794 if (strlen(value) != 32) {
795 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR,
796 GOST_R_INVALID_MAC_KEY_LENGTH);
799 return pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,
802 if (strcmp(type, hexkey_ctrl_string) == 0) {
805 unsigned char *keybuf = string_to_hex(value, &keylen);
806 if (!keybuf || keylen != 32) {
807 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR,
808 GOST_R_INVALID_MAC_KEY_LENGTH);
809 OPENSSL_free(keybuf);
812 ret = pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, 32, keybuf);
813 OPENSSL_free(keybuf);
817 if (!strcmp(type, maclen_ctrl_string)) {
819 long size = strtol(value, &endptr, 10);
820 if (*endptr != '\0') {
821 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR, GOST_R_INVALID_MAC_SIZE);
824 return pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_MAC_LEN, size, NULL);
826 if (strcmp(type, param_ctrl_string) == 0) {
827 ASN1_OBJECT *obj = OBJ_txt2obj(value, 0);
828 const struct gost_cipher_info *param = NULL;
830 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR, GOST_R_INVALID_MAC_PARAMS);
834 param = get_encryption_params(obj);
835 ASN1_OBJECT_free(obj);
837 GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR, GOST_R_INVALID_MAC_PARAMS);
842 return pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_GOST_PARAMSET, 0,
848 static int pkey_gost_omac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2, size_t max_size)
850 struct gost_mac_pmeth_data *data =
851 (struct gost_mac_pmeth_data *)EVP_PKEY_CTX_get_data(ctx);
854 case EVP_PKEY_CTRL_MD:
856 int nid = EVP_MD_type((const EVP_MD *)p2);
857 if (nid != NID_magma_mac && nid != NID_grasshopper_mac
858 && nid != NID_id_tc26_cipher_gostr3412_2015_kuznyechik_ctracpkm_omac /* FIXME beldmit */
859 && nid != NID_id_tc26_cipher_gostr3412_2015_magma_ctracpkm_omac) {
860 GOSTerr(GOST_F_PKEY_GOST_OMAC_CTRL,
861 GOST_R_INVALID_DIGEST_TYPE);
864 data->md = (EVP_MD *)p2;
868 case EVP_PKEY_CTRL_GET_MD:
869 *(const EVP_MD **)p2 = data->md;
872 case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
873 case EVP_PKEY_CTRL_PKCS7_DECRYPT:
874 case EVP_PKEY_CTRL_PKCS7_SIGN:
876 case EVP_PKEY_CTRL_SET_MAC_KEY:
878 GOSTerr(GOST_F_PKEY_GOST_OMAC_CTRL, GOST_R_INVALID_MAC_KEY_LENGTH);
882 memcpy(data->key, p2, 32);
885 case EVP_PKEY_CTRL_DIGESTINIT:
887 EVP_MD_CTX *mctx = p2;
888 if (!data->key_set) {
889 struct gost_mac_key *key;
890 EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
892 GOSTerr(GOST_F_PKEY_GOST_OMAC_CTRL,
893 GOST_R_MAC_KEY_NOT_SET);
896 key = EVP_PKEY_get0(pkey);
898 GOSTerr(GOST_F_PKEY_GOST_OMAC_CTRL,
899 GOST_R_MAC_KEY_NOT_SET);
902 return EVP_MD_meth_get_ctrl(EVP_MD_CTX_md(mctx))
903 (mctx, EVP_MD_CTRL_SET_KEY, 0, key);
905 return EVP_MD_meth_get_ctrl(EVP_MD_CTX_md(mctx))
906 (mctx, EVP_MD_CTRL_SET_KEY, 32, &(data->key));
909 case EVP_PKEY_CTRL_MAC_LEN:
911 if (p1 < 1 || p1 > max_size) {
913 GOSTerr(GOST_F_PKEY_GOST_OMAC_CTRL, GOST_R_INVALID_MAC_SIZE);
923 static int pkey_gost_magma_mac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
925 return pkey_gost_omac_ctrl(ctx, type, p1, p2, 8);
928 static int pkey_gost_grasshopper_mac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
930 return pkey_gost_omac_ctrl(ctx, type, p1, p2, 16);
933 static int pkey_gost_omac_ctrl_str(EVP_PKEY_CTX *ctx,
934 const char *type, const char *value, size_t max_size)
936 if (strcmp(type, key_ctrl_string) == 0) {
937 if (strlen(value) != 32) {
938 GOSTerr(GOST_F_PKEY_GOST_OMAC_CTRL_STR,
939 GOST_R_INVALID_MAC_KEY_LENGTH);
942 return pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,
945 if (strcmp(type, hexkey_ctrl_string) == 0) {
948 unsigned char *keybuf = string_to_hex(value, &keylen);
949 if (!keybuf || keylen != 32) {
950 GOSTerr(GOST_F_PKEY_GOST_OMAC_CTRL_STR,
951 GOST_R_INVALID_MAC_KEY_LENGTH);
952 OPENSSL_free(keybuf);
955 ret = pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, 32, keybuf);
956 OPENSSL_free(keybuf);
960 if (!strcmp(type, maclen_ctrl_string)) {
962 long size = strtol(value, &endptr, 10);
963 if (*endptr != '\0') {
964 GOSTerr(GOST_F_PKEY_GOST_OMAC_CTRL_STR, GOST_R_INVALID_MAC_SIZE);
967 return pkey_gost_omac_ctrl(ctx, EVP_PKEY_CTRL_MAC_LEN, size, NULL, max_size);
972 static int pkey_gost_magma_mac_ctrl_str(EVP_PKEY_CTX *ctx,
973 const char *type, const char *value)
975 return pkey_gost_omac_ctrl_str(ctx, type, value, 8);
978 static int pkey_gost_grasshopper_mac_ctrl_str(EVP_PKEY_CTX *ctx,
979 const char *type, const char *value)
981 return pkey_gost_omac_ctrl_str(ctx, type, value, 8);
984 static int pkey_gost_mac_keygen_base(EVP_PKEY_CTX *ctx,
985 EVP_PKEY *pkey, int mac_nid)
987 struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
988 struct gost_mac_key *keydata;
989 if (!data || !data->key_set) {
990 GOSTerr(GOST_F_PKEY_GOST_MAC_KEYGEN_BASE, GOST_R_MAC_KEY_NOT_SET);
993 keydata = OPENSSL_malloc(sizeof(struct gost_mac_key));
996 memcpy(keydata->key, data->key, 32);
997 keydata->mac_param_nid = data->mac_param_nid;
998 keydata->mac_size = data->mac_size;
999 EVP_PKEY_assign(pkey, mac_nid, keydata);
1003 static int pkey_gost_mac_keygen_12(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
1005 return pkey_gost_mac_keygen_base(ctx, pkey, NID_gost_mac_12);
1008 static int pkey_gost_mac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
1010 return pkey_gost_mac_keygen_base(ctx, pkey, NID_id_Gost28147_89_MAC);
1013 static int pkey_gost_magma_mac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
1015 return pkey_gost_mac_keygen_base(ctx, pkey, NID_magma_mac);
1018 static int pkey_gost_grasshopper_mac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
1020 return pkey_gost_mac_keygen_base(ctx, pkey, NID_grasshopper_mac);
1023 static int pkey_gost_mac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
1025 struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
1028 pkey_gost_mac_init(ctx);
1031 data = EVP_PKEY_CTX_get_data(ctx);
1033 GOSTerr(GOST_F_PKEY_GOST_MAC_SIGNCTX_INIT, GOST_R_MAC_KEY_NOT_SET);
1040 static int pkey_gost_magma_mac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
1042 struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
1045 pkey_gost_omac_init(ctx, 4);
1048 data = EVP_PKEY_CTX_get_data(ctx);
1050 GOSTerr(GOST_F_PKEY_GOST_MAGMA_MAC_SIGNCTX_INIT, GOST_R_MAC_KEY_NOT_SET);
1057 static int pkey_gost_grasshopper_mac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
1059 struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
1062 pkey_gost_omac_init(ctx, 8);
1065 data = EVP_PKEY_CTX_get_data(ctx);
1067 GOSTerr(GOST_F_PKEY_GOST_GRASSHOPPER_MAC_SIGNCTX_INIT, GOST_R_MAC_KEY_NOT_SET);
1074 static int pkey_gost_mac_signctx(EVP_PKEY_CTX *ctx, unsigned char *sig,
1075 size_t *siglen, EVP_MD_CTX *mctx)
1077 unsigned int tmpsiglen;
1079 struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
1083 tmpsiglen = *siglen; /* for platforms where sizeof(int) !=
1087 *siglen = data->mac_size;
1091 EVP_MD_meth_get_ctrl(EVP_MD_CTX_md(mctx))
1092 (mctx, EVP_MD_CTRL_XOF_LEN, data->mac_size, NULL);
1093 ret = EVP_DigestFinal_ex(mctx, sig, &tmpsiglen);
1094 *siglen = data->mac_size;
1098 /* ----------- misc callbacks -------------------------------------*/
1100 /* Callback for both EVP_PKEY_check() and EVP_PKEY_public_check. */
1101 static int pkey_gost_check(EVP_PKEY *pkey)
1103 return EC_KEY_check_key(EVP_PKEY_get0(pkey));
1106 /* ----------------------------------------------------------------*/
1107 int register_pmeth_gost(int id, EVP_PKEY_METHOD **pmeth, int flags)
1109 *pmeth = EVP_PKEY_meth_new(id, flags);
1114 case NID_id_GostR3410_2001:
1115 case NID_id_GostR3410_2001DH:
1116 EVP_PKEY_meth_set_ctrl(*pmeth,
1117 pkey_gost_ctrl, pkey_gost_ec_ctrl_str_256);
1118 EVP_PKEY_meth_set_sign(*pmeth, NULL, pkey_gost_ec_cp_sign);
1119 EVP_PKEY_meth_set_verify(*pmeth, NULL, pkey_gost_ec_cp_verify);
1121 EVP_PKEY_meth_set_keygen(*pmeth, NULL, pkey_gost2001cp_keygen);
1123 EVP_PKEY_meth_set_encrypt(*pmeth,
1124 pkey_gost_encrypt_init,
1126 EVP_PKEY_meth_set_decrypt(*pmeth, NULL, pkey_gost_decrypt);
1127 EVP_PKEY_meth_set_derive(*pmeth,
1128 pkey_gost_derive_init, pkey_gost_ec_derive);
1129 EVP_PKEY_meth_set_paramgen(*pmeth, pkey_gost_paramgen_init,
1130 pkey_gost2001_paramgen);
1131 EVP_PKEY_meth_set_check(*pmeth, pkey_gost_check);
1132 EVP_PKEY_meth_set_public_check(*pmeth, pkey_gost_check);
1134 case NID_id_GostR3410_2012_256:
1135 EVP_PKEY_meth_set_ctrl(*pmeth,
1136 pkey_gost_ctrl, pkey_gost_ec_ctrl_str_256);
1137 EVP_PKEY_meth_set_sign(*pmeth, NULL, pkey_gost_ec_cp_sign);
1138 EVP_PKEY_meth_set_verify(*pmeth, NULL, pkey_gost_ec_cp_verify);
1140 EVP_PKEY_meth_set_keygen(*pmeth, NULL, pkey_gost2012cp_keygen);
1142 EVP_PKEY_meth_set_encrypt(*pmeth,
1143 pkey_gost_encrypt_init,
1145 EVP_PKEY_meth_set_decrypt(*pmeth, NULL, pkey_gost_decrypt);
1146 EVP_PKEY_meth_set_derive(*pmeth,
1147 pkey_gost_derive_init, pkey_gost_ec_derive);
1148 EVP_PKEY_meth_set_paramgen(*pmeth,
1149 pkey_gost_paramgen_init,
1150 pkey_gost2012_paramgen);
1151 EVP_PKEY_meth_set_check(*pmeth, pkey_gost_check);
1152 EVP_PKEY_meth_set_public_check(*pmeth, pkey_gost_check);
1154 case NID_id_GostR3410_2012_512:
1155 EVP_PKEY_meth_set_ctrl(*pmeth,
1156 pkey_gost_ctrl, pkey_gost_ec_ctrl_str_512);
1157 EVP_PKEY_meth_set_sign(*pmeth, NULL, pkey_gost_ec_cp_sign);
1158 EVP_PKEY_meth_set_verify(*pmeth, NULL, pkey_gost_ec_cp_verify);
1160 EVP_PKEY_meth_set_keygen(*pmeth, NULL, pkey_gost2012cp_keygen);
1162 EVP_PKEY_meth_set_encrypt(*pmeth,
1163 pkey_gost_encrypt_init,
1165 EVP_PKEY_meth_set_decrypt(*pmeth, NULL, pkey_gost_decrypt);
1166 EVP_PKEY_meth_set_derive(*pmeth,
1167 pkey_gost_derive_init, pkey_gost_ec_derive);
1168 EVP_PKEY_meth_set_paramgen(*pmeth,
1169 pkey_gost_paramgen_init,
1170 pkey_gost2012_paramgen);
1171 EVP_PKEY_meth_set_check(*pmeth, pkey_gost_check);
1172 EVP_PKEY_meth_set_public_check(*pmeth, pkey_gost_check);
1174 case NID_id_Gost28147_89_MAC:
1175 EVP_PKEY_meth_set_ctrl(*pmeth, pkey_gost_mac_ctrl,
1176 pkey_gost_mac_ctrl_str);
1177 EVP_PKEY_meth_set_signctx(*pmeth, pkey_gost_mac_signctx_init,
1178 pkey_gost_mac_signctx);
1179 EVP_PKEY_meth_set_keygen(*pmeth, NULL, pkey_gost_mac_keygen);
1180 EVP_PKEY_meth_set_init(*pmeth, pkey_gost_mac_init);
1181 EVP_PKEY_meth_set_cleanup(*pmeth, pkey_gost_mac_cleanup);
1182 EVP_PKEY_meth_set_copy(*pmeth, pkey_gost_mac_copy);
1184 case NID_gost_mac_12:
1185 EVP_PKEY_meth_set_ctrl(*pmeth, pkey_gost_mac_ctrl,
1186 pkey_gost_mac_ctrl_str);
1187 EVP_PKEY_meth_set_signctx(*pmeth, pkey_gost_mac_signctx_init,
1188 pkey_gost_mac_signctx);
1189 EVP_PKEY_meth_set_keygen(*pmeth, NULL, pkey_gost_mac_keygen_12);
1190 EVP_PKEY_meth_set_init(*pmeth, pkey_gost_mac_init);
1191 EVP_PKEY_meth_set_cleanup(*pmeth, pkey_gost_mac_cleanup);
1192 EVP_PKEY_meth_set_copy(*pmeth, pkey_gost_mac_copy);
1195 EVP_PKEY_meth_set_ctrl(*pmeth, pkey_gost_magma_mac_ctrl,
1196 pkey_gost_magma_mac_ctrl_str);
1197 EVP_PKEY_meth_set_signctx(*pmeth, pkey_gost_magma_mac_signctx_init,
1198 pkey_gost_mac_signctx);
1199 EVP_PKEY_meth_set_keygen(*pmeth, NULL, pkey_gost_magma_mac_keygen);
1200 EVP_PKEY_meth_set_init(*pmeth, pkey_gost_magma_mac_init);
1201 EVP_PKEY_meth_set_cleanup(*pmeth, pkey_gost_mac_cleanup);
1202 EVP_PKEY_meth_set_copy(*pmeth, pkey_gost_mac_copy);
1204 case NID_grasshopper_mac:
1205 case NID_id_tc26_cipher_gostr3412_2015_kuznyechik_ctracpkm_omac: /* FIXME beldmit */
1206 EVP_PKEY_meth_set_ctrl(*pmeth, pkey_gost_grasshopper_mac_ctrl,
1207 pkey_gost_grasshopper_mac_ctrl_str);
1208 EVP_PKEY_meth_set_signctx(*pmeth, pkey_gost_grasshopper_mac_signctx_init,
1209 pkey_gost_mac_signctx);
1210 EVP_PKEY_meth_set_keygen(*pmeth, NULL, pkey_gost_grasshopper_mac_keygen);
1211 EVP_PKEY_meth_set_init(*pmeth, pkey_gost_grasshopper_mac_init);
1212 EVP_PKEY_meth_set_cleanup(*pmeth, pkey_gost_mac_cleanup);
1213 EVP_PKEY_meth_set_copy(*pmeth, pkey_gost_mac_copy);
1215 default: /* Unsupported method */
1218 EVP_PKEY_meth_set_init(*pmeth, pkey_gost_init);
1219 EVP_PKEY_meth_set_cleanup(*pmeth, pkey_gost_cleanup);
1221 EVP_PKEY_meth_set_copy(*pmeth, pkey_gost_copy);
1223 * FIXME derive etc...