/
gost_pmeth.c
1166 lines (1036 loc) · 36.4 KB
/
gost_pmeth.c
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/**********************************************************************
* gost_pmeth.c *
* Copyright (c) 2005-2013 Cryptocom LTD *
* This file is distributed under the same license as OpenSSL *
* *
* Implementation of RFC 4357 (GOST R 34.10) Publick key method *
* for OpenSSL *
* Requires OpenSSL 1.0.0+ for compilation *
**********************************************************************/
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/ec.h>
#include <openssl/err.h>
#include <openssl/x509v3.h> /* For string_to_hex */
#include <openssl/opensslv.h> /* For OPENSSL_VERSION_MAJOR */
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "gost_lcl.h"
#include "e_gost_err.h"
#define ossl3_const
#ifdef OPENSSL_VERSION_MAJOR
#undef ossl3_const
#define ossl3_const const
#endif
/* -----init, cleanup, copy - uniform for all algs --------------*/
/* Allocates new gost_pmeth_data structure and assigns it as data */
static int pkey_gost_init(EVP_PKEY_CTX *ctx)
{
struct gost_pmeth_data *data;
EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
data = OPENSSL_malloc(sizeof(*data));
if (!data)
return 0;
memset(data, 0, sizeof(*data));
if (pkey && EVP_PKEY_get0(pkey)) {
switch (EVP_PKEY_base_id(pkey)) {
case NID_id_GostR3410_2001:
case NID_id_GostR3410_2001DH:
case NID_id_GostR3410_2012_256:
case NID_id_GostR3410_2012_512:
{
const EC_GROUP *group =
EC_KEY_get0_group(EVP_PKEY_get0((EVP_PKEY *)pkey));
if (group != NULL) {
data->sign_param_nid = EC_GROUP_get_curve_name(group);
break;
}
/* else */
}
default:
OPENSSL_free(data);
return 0;
}
}
EVP_PKEY_CTX_set_data(ctx, data);
return 1;
}
/* Copies contents of gost_pmeth_data structure */
static int pkey_gost_copy(EVP_PKEY_CTX *dst, ossl3_const EVP_PKEY_CTX *src)
{
struct gost_pmeth_data *dst_data, *src_data;
if (!pkey_gost_init(dst)) {
return 0;
}
src_data = EVP_PKEY_CTX_get_data(src);
dst_data = EVP_PKEY_CTX_get_data(dst);
if (!src_data || !dst_data)
return 0;
*dst_data = *src_data;
return 1;
}
/* Frees up gost_pmeth_data structure */
static void pkey_gost_cleanup(EVP_PKEY_CTX *ctx)
{
struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
if (!data)
return;
OPENSSL_free(data);
}
/* --------------------- control functions ------------------------------*/
static int pkey_gost_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
{
struct gost_pmeth_data *pctx =
(struct gost_pmeth_data *)EVP_PKEY_CTX_get_data(ctx);
if (pctx == NULL)
return 0;
switch (type) {
case EVP_PKEY_CTRL_MD:
{
EVP_PKEY *key = EVP_PKEY_CTX_get0_pkey(ctx);
int pkey_nid = (key == NULL) ? NID_undef : EVP_PKEY_base_id(key);
OPENSSL_assert(p2 != NULL);
switch (EVP_MD_type((const EVP_MD *)p2)) {
case NID_id_GostR3411_94:
if (pkey_nid == NID_id_GostR3410_2001
|| pkey_nid == NID_id_GostR3410_2001DH
|| pkey_nid == NID_id_GostR3410_94) {
pctx->md = (EVP_MD *)p2;
return 1;
}
break;
case NID_id_GostR3411_2012_256:
if (pkey_nid == NID_id_GostR3410_2012_256) {
pctx->md = (EVP_MD *)p2;
return 1;
}
break;
case NID_id_GostR3411_2012_512:
if (pkey_nid == NID_id_GostR3410_2012_512) {
pctx->md = (EVP_MD *)p2;
return 1;
}
break;
}
GOSTerr(GOST_F_PKEY_GOST_CTRL, GOST_R_INVALID_DIGEST_TYPE);
return 0;
}
case EVP_PKEY_CTRL_GET_MD:
*(const EVP_MD **)p2 = pctx->md;
return 1;
case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
case EVP_PKEY_CTRL_PKCS7_DECRYPT:
case EVP_PKEY_CTRL_PKCS7_SIGN:
case EVP_PKEY_CTRL_DIGESTINIT:
#ifndef OPENSSL_NO_CMS
case EVP_PKEY_CTRL_CMS_ENCRYPT:
case EVP_PKEY_CTRL_CMS_DECRYPT:
case EVP_PKEY_CTRL_CMS_SIGN:
#endif
return 1;
case EVP_PKEY_CTRL_GOST_PARAMSET:
pctx->sign_param_nid = (int)p1;
return 1;
case EVP_PKEY_CTRL_SET_IV:
if (p1 > sizeof(pctx->shared_ukm) || !p2) {
GOSTerr(GOST_F_PKEY_GOST_CTRL, GOST_R_UKM_NOT_SET);
return 0;
}
memcpy(pctx->shared_ukm, p2, (int)p1);
pctx->shared_ukm_size = p1;
return 1;
case EVP_PKEY_CTRL_SET_VKO:
switch (p1) {
case 0: /* switch to KEG */
case NID_id_GostR3411_2012_256:
case NID_id_GostR3411_2012_512:
break;
default:
GOSTerr(GOST_F_PKEY_GOST_CTRL, GOST_R_INVALID_DIGEST_TYPE);
return 0;
}
pctx->vko_dgst_nid = p1;
return 1;
case EVP_PKEY_CTRL_CIPHER:
switch (p1) {
case NID_magma_ctr_acpkm:
case NID_magma_ctr_acpkm_omac:
case NID_magma_ctr:
pctx->cipher_nid = NID_magma_ctr;
return 1;
case NID_kuznyechik_ctr_acpkm:
case NID_kuznyechik_ctr_acpkm_omac:
case NID_kuznyechik_ctr:
pctx->cipher_nid = NID_kuznyechik_ctr;
return 1;
default:
pctx->cipher_nid = p1;
return 1;
}
case EVP_PKEY_CTRL_PEER_KEY:
if (p1 == 0 || p1 == 1) /* call from EVP_PKEY_derive_set_peer */
return 1;
if (p1 == 2) /* TLS: peer key used? */
return pctx->peer_key_used;
if (p1 == 3) /* TLS: peer key used! */
return (pctx->peer_key_used = 1);
break;
}
GOSTerr(GOST_F_PKEY_GOST_CTRL, GOST_R_CTRL_CALL_FAILED);
return -2;
}
static int pkey_gost_ec_ctrl_str_common(EVP_PKEY_CTX *ctx,
const char *type, const char *value)
{
if (0 == strcmp(type, ukm_ctrl_string)) {
unsigned char ukm_buf[32], *tmp = NULL;
long len = 0;
tmp = OPENSSL_hexstr2buf(value, &len);
if (tmp == NULL)
return 0;
if (len > 32) {
OPENSSL_free(tmp);
GOSTerr(GOST_F_PKEY_GOST_EC_CTRL_STR_COMMON, GOST_R_CTRL_CALL_FAILED);
return 0;
}
memcpy(ukm_buf, tmp, len);
OPENSSL_free(tmp);
return pkey_gost_ctrl(ctx, EVP_PKEY_CTRL_SET_IV, len, ukm_buf);
} else if (strcmp(type, vko_ctrl_string) == 0) {
int bits = atoi(value);
int vko_dgst_nid = 0;
if (bits == 256)
vko_dgst_nid = NID_id_GostR3411_2012_256;
else if (bits == 512)
vko_dgst_nid = NID_id_GostR3411_2012_512;
else if (bits != 0) {
GOSTerr(GOST_F_PKEY_GOST_EC_CTRL_STR_COMMON, GOST_R_INVALID_DIGEST_TYPE);
return 0;
}
return pkey_gost_ctrl(ctx, EVP_PKEY_CTRL_SET_VKO, vko_dgst_nid, NULL);
}
return -2;
}
static int pkey_gost_ec_ctrl_str_256(EVP_PKEY_CTX *ctx,
const char *type, const char *value)
{
if (strcmp(type, param_ctrl_string) == 0) {
int param_nid = 0;
if (!value) {
return 0;
}
if (strlen(value) == 1) {
switch (toupper((unsigned char)value[0])) {
case 'A':
param_nid = NID_id_GostR3410_2001_CryptoPro_A_ParamSet;
break;
case 'B':
param_nid = NID_id_GostR3410_2001_CryptoPro_B_ParamSet;
break;
case 'C':
param_nid = NID_id_GostR3410_2001_CryptoPro_C_ParamSet;
break;
case '0':
param_nid = NID_id_GostR3410_2001_TestParamSet;
break;
default:
return 0;
}
} else if ((strlen(value) == 2)
&& (toupper((unsigned char)value[0]) == 'X')) {
switch (toupper((unsigned char)value[1])) {
case 'A':
param_nid = NID_id_GostR3410_2001_CryptoPro_XchA_ParamSet;
break;
case 'B':
param_nid = NID_id_GostR3410_2001_CryptoPro_XchB_ParamSet;
break;
default:
return 0;
}
} else if ((strlen(value) == 3)
&& (toupper((unsigned char)value[0]) == 'T')
&& (toupper((unsigned char)value[1]) == 'C')) {
switch (toupper((unsigned char)value[2])) {
case 'A':
param_nid = NID_id_tc26_gost_3410_2012_256_paramSetA;
break;
case 'B':
param_nid = NID_id_tc26_gost_3410_2012_256_paramSetB;
break;
case 'C':
param_nid = NID_id_tc26_gost_3410_2012_256_paramSetC;
break;
case 'D':
param_nid = NID_id_tc26_gost_3410_2012_256_paramSetD;
break;
default:
return 0;
}
} else {
R3410_ec_params *p = R3410_2001_paramset;
param_nid = OBJ_txt2nid(value);
if (param_nid == NID_undef) {
return 0;
}
for (; p->nid != NID_undef; p++) {
if (p->nid == param_nid)
break;
}
if (p->nid == NID_undef) {
GOSTerr(GOST_F_PKEY_GOST_EC_CTRL_STR_256,
GOST_R_INVALID_PARAMSET);
return 0;
}
}
return pkey_gost_ctrl(ctx, EVP_PKEY_CTRL_GOST_PARAMSET,
param_nid, NULL);
}
return pkey_gost_ec_ctrl_str_common(ctx, type, value);
}
static int pkey_gost_ec_ctrl_str_512(EVP_PKEY_CTX *ctx,
const char *type, const char *value)
{
int param_nid = NID_undef;
if (strcmp(type, param_ctrl_string))
return pkey_gost_ec_ctrl_str_common(ctx, type, value);
if (!value)
return 0;
if (strlen(value) == 1) {
switch (toupper((unsigned char)value[0])) {
case 'A':
param_nid = NID_id_tc26_gost_3410_2012_512_paramSetA;
break;
case 'B':
param_nid = NID_id_tc26_gost_3410_2012_512_paramSetB;
break;
case 'C':
param_nid = NID_id_tc26_gost_3410_2012_512_paramSetC;
break;
default:
return 0;
}
} else {
R3410_ec_params *p = R3410_2012_512_paramset;
param_nid = OBJ_txt2nid(value);
if (param_nid == NID_undef)
return 0;
while (p->nid != NID_undef && p->nid != param_nid)
p++;
if (p->nid == NID_undef) {
GOSTerr(GOST_F_PKEY_GOST_EC_CTRL_STR_512,
GOST_R_INVALID_PARAMSET);
return 0;
}
}
return pkey_gost_ctrl(ctx, EVP_PKEY_CTRL_GOST_PARAMSET, param_nid, NULL);
}
/* --------------------- key generation --------------------------------*/
static int pkey_gost_paramgen_init(EVP_PKEY_CTX *ctx)
{
return 1;
}
static int pkey_gost2001_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
{
struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
EC_KEY *ec = NULL;
if (!data || data->sign_param_nid == NID_undef) {
GOSTerr(GOST_F_PKEY_GOST2001_PARAMGEN, GOST_R_NO_PARAMETERS_SET);
return 0;
}
ec = EC_KEY_new();
if (!fill_GOST_EC_params(ec, data->sign_param_nid)
|| !EVP_PKEY_assign(pkey, NID_id_GostR3410_2001, ec)) {
EC_KEY_free(ec);
return 0;
}
return 1;
}
static int pkey_gost2012_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
{
struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
EC_KEY *ec;
int result = 0;
if (!data || data->sign_param_nid == NID_undef) {
GOSTerr(GOST_F_PKEY_GOST2012_PARAMGEN, GOST_R_NO_PARAMETERS_SET);
return 0;
}
ec = EC_KEY_new();
if (!fill_GOST_EC_params(ec, data->sign_param_nid)) {
EC_KEY_free(ec);
return 0;
}
switch (data->sign_param_nid) {
case NID_id_tc26_gost_3410_2012_512_paramSetA:
case NID_id_tc26_gost_3410_2012_512_paramSetB:
case NID_id_tc26_gost_3410_2012_512_paramSetC:
case NID_id_tc26_gost_3410_2012_512_paramSetTest:
result =
(EVP_PKEY_assign(pkey, NID_id_GostR3410_2012_512, ec)) ? 1 : 0;
break;
case NID_id_GostR3410_2001_CryptoPro_A_ParamSet:
case NID_id_GostR3410_2001_CryptoPro_B_ParamSet:
case NID_id_GostR3410_2001_CryptoPro_C_ParamSet:
case NID_id_GostR3410_2001_CryptoPro_XchA_ParamSet:
case NID_id_GostR3410_2001_CryptoPro_XchB_ParamSet:
case NID_id_GostR3410_2001_TestParamSet:
case NID_id_tc26_gost_3410_2012_256_paramSetA:
case NID_id_tc26_gost_3410_2012_256_paramSetB:
case NID_id_tc26_gost_3410_2012_256_paramSetC:
case NID_id_tc26_gost_3410_2012_256_paramSetD:
result =
(EVP_PKEY_assign(pkey, NID_id_GostR3410_2012_256, ec)) ? 1 : 0;
break;
default:
result = 0;
break;
}
if (result == 0)
EC_KEY_free(ec);
return result;
}
/* ----------- keygen callbacks --------------------------------------*/
/* Generates GOST_R3410 2001 key and assigns it using specified type */
static int pkey_gost2001cp_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
{
EC_KEY *ec;
if (!pkey_gost2001_paramgen(ctx, pkey))
return 0;
ec = EVP_PKEY_get0(pkey);
gost_ec_keygen(ec);
return 1;
}
/* Generates GOST_R3410 2012 key and assigns it using specified type */
static int pkey_gost2012cp_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
{
if (!pkey_gost2012_paramgen(ctx, pkey))
return 0;
gost_ec_keygen(EVP_PKEY_get0(pkey));
return 1;
}
/* ----------- sign callbacks --------------------------------------*/
/*
* Packs signature according to Cryptopro rules
* and frees up ECDSA_SIG structure
*/
int pack_sign_cp(ECDSA_SIG *s, int order, unsigned char *sig, size_t *siglen)
{
const BIGNUM *sig_r = NULL, *sig_s = NULL;
ECDSA_SIG_get0(s, &sig_r, &sig_s);
*siglen = 2 * order;
memset(sig, 0, *siglen);
store_bignum(sig_s, sig, order);
store_bignum(sig_r, sig + order, order);
ECDSA_SIG_free(s);
return 1;
}
static int pkey_gost_ec_cp_sign(EVP_PKEY_CTX *ctx, unsigned char *sig,
size_t *siglen, const unsigned char *tbs,
size_t tbs_len)
{
ECDSA_SIG *unpacked_sig = NULL;
EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
int order = 0;
if (!siglen)
return 0;
if (!pkey)
return 0;
switch (EVP_PKEY_base_id(pkey)) {
case NID_id_GostR3410_2001:
case NID_id_GostR3410_2001DH:
case NID_id_GostR3410_2012_256:
order = 64;
break;
case NID_id_GostR3410_2012_512:
order = 128;
break;
default:
return 0;
}
if (!sig) {
*siglen = order;
return 1;
}
unpacked_sig = gost_ec_sign(tbs, tbs_len, EVP_PKEY_get0(pkey));
if (!unpacked_sig) {
return 0;
}
return pack_sign_cp(unpacked_sig, order / 2, sig, siglen);
}
/* ------------------- verify callbacks ---------------------------*/
/* Unpack signature according to cryptopro rules */
ECDSA_SIG *unpack_cp_signature(const unsigned char *sigbuf, size_t siglen)
{
ECDSA_SIG *sig;
BIGNUM *r = NULL, *s = NULL;
sig = ECDSA_SIG_new();
if (sig == NULL) {
GOSTerr(GOST_F_UNPACK_CP_SIGNATURE, ERR_R_MALLOC_FAILURE);
return NULL;
}
s = BN_bin2bn(sigbuf, siglen / 2, NULL);
r = BN_bin2bn(sigbuf + siglen / 2, siglen / 2, NULL);
ECDSA_SIG_set0(sig, r, s);
return sig;
}
static int pkey_gost_ec_cp_verify(EVP_PKEY_CTX *ctx, const unsigned char *sig,
size_t siglen, const unsigned char *tbs,
size_t tbs_len)
{
int ok = 0;
EVP_PKEY *pub_key = EVP_PKEY_CTX_get0_pkey(ctx);
ECDSA_SIG *s = (sig) ? unpack_cp_signature(sig, siglen) : NULL;
if (!s)
return 0;
#ifdef DEBUG_SIGN
fprintf(stderr, "R=");
BN_print_fp(stderr, ECDSA_SIG_get0_r(s));
fprintf(stderr, "\nS=");
BN_print_fp(stderr, ECDSA_SIG_get0_s(s));
fprintf(stderr, "\n");
#endif
if (pub_key)
ok = gost_ec_verify(tbs, tbs_len, s, EVP_PKEY_get0(pub_key));
ECDSA_SIG_free(s);
return ok;
}
/* ------------- encrypt init -------------------------------------*/
/* Generates ephermeral key */
static int pkey_gost_encrypt_init(EVP_PKEY_CTX *ctx)
{
return 1;
}
/* --------------- Derive init ------------------------------------*/
static int pkey_gost_derive_init(EVP_PKEY_CTX *ctx)
{
return 1;
}
/* -------- PKEY_METHOD for GOST MAC algorithm --------------------*/
static int pkey_gost_mac_init(EVP_PKEY_CTX *ctx)
{
struct gost_mac_pmeth_data *data = OPENSSL_malloc(sizeof(*data));
EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
if (!data)
return 0;
memset(data, 0, sizeof(*data));
data->mac_size = 4;
data->mac_param_nid = NID_undef;
if (pkey) {
struct gost_mac_key *key = EVP_PKEY_get0(pkey);
if (key) {
data->mac_param_nid = key->mac_param_nid;
data->mac_size = key->mac_size;
}
}
EVP_PKEY_CTX_set_data(ctx, data);
return 1;
}
static int pkey_gost_omac_init(EVP_PKEY_CTX *ctx, size_t mac_size)
{
struct gost_mac_pmeth_data *data = OPENSSL_malloc(sizeof(*data));
EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
if (!data)
return 0;
memset(data, 0, sizeof(*data));
data->mac_size = mac_size;
data->mac_param_nid = NID_undef;
if (pkey) {
struct gost_mac_key *key = EVP_PKEY_get0(pkey);
if (key) {
data->mac_param_nid = key->mac_param_nid;
data->mac_size = key->mac_size;
}
}
EVP_PKEY_CTX_set_data(ctx, data);
return 1;
}
static int pkey_gost_magma_mac_init(EVP_PKEY_CTX *ctx)
{
return pkey_gost_omac_init(ctx, 8);
}
static int pkey_gost_grasshopper_mac_init(EVP_PKEY_CTX *ctx)
{
return pkey_gost_omac_init(ctx, 16);
}
static void pkey_gost_mac_cleanup(EVP_PKEY_CTX *ctx)
{
struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
if (data)
OPENSSL_free(data);
}
static int pkey_gost_mac_copy(EVP_PKEY_CTX *dst, ossl3_const EVP_PKEY_CTX *src)
{
struct gost_mac_pmeth_data *dst_data, *src_data;
if (!pkey_gost_mac_init(dst)) {
return 0;
}
src_data = EVP_PKEY_CTX_get_data(src);
dst_data = EVP_PKEY_CTX_get_data(dst);
if (!src_data || !dst_data)
return 0;
*dst_data = *src_data;
return 1;
}
static int pkey_gost_mac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
{
struct gost_mac_pmeth_data *data =
(struct gost_mac_pmeth_data *)EVP_PKEY_CTX_get_data(ctx);
switch (type) {
case EVP_PKEY_CTRL_MD:
{
int nid = EVP_MD_type((const EVP_MD *)p2);
if (nid != NID_id_Gost28147_89_MAC && nid != NID_gost_mac_12) {
GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,
GOST_R_INVALID_DIGEST_TYPE);
return 0;
}
data->md = (EVP_MD *)p2;
return 1;
}
case EVP_PKEY_CTRL_GET_MD:
*(const EVP_MD **)p2 = data->md;
return 1;
case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
case EVP_PKEY_CTRL_PKCS7_DECRYPT:
case EVP_PKEY_CTRL_PKCS7_SIGN:
return 1;
case EVP_PKEY_CTRL_SET_MAC_KEY:
if (p1 != 32) {
GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL, GOST_R_INVALID_MAC_KEY_LENGTH);
return 0;
}
memcpy(data->key, p2, 32);
data->key_set = 1;
return 1;
case EVP_PKEY_CTRL_GOST_PARAMSET:
{
struct gost_cipher_info *param = p2;
data->mac_param_nid = param->nid;
return 1;
}
case EVP_PKEY_CTRL_DIGESTINIT:
{
EVP_MD_CTX *mctx = p2;
if (!data->key_set) {
struct gost_mac_key *key;
EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
if (!pkey) {
GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,
GOST_R_MAC_KEY_NOT_SET);
return 0;
}
key = EVP_PKEY_get0(pkey);
if (!key) {
GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL,
GOST_R_MAC_KEY_NOT_SET);
return 0;
}
return EVP_MD_meth_get_ctrl(EVP_MD_CTX_md(mctx))
(mctx, EVP_MD_CTRL_SET_KEY, 0, key);
} else {
return EVP_MD_meth_get_ctrl(EVP_MD_CTX_md(mctx))
(mctx, EVP_MD_CTRL_SET_KEY, 32, &(data->key));
}
}
case EVP_PKEY_CTRL_MAC_LEN:
{
if (p1 < 1 || p1 > 8) {
GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL, GOST_R_INVALID_MAC_SIZE);
return 0;
}
data->mac_size = p1;
return 1;
}
}
return -2;
}
static int pkey_gost_mac_ctrl_str(EVP_PKEY_CTX *ctx,
const char *type, const char *value)
{
if (strcmp(type, key_ctrl_string) == 0) {
if (strlen(value) != 32) {
GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR,
GOST_R_INVALID_MAC_KEY_LENGTH);
return 0;
}
return pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,
32, (char *)value);
}
if (strcmp(type, hexkey_ctrl_string) == 0) {
long keylen;
int ret;
unsigned char *keybuf = string_to_hex(value, &keylen);
if (!keybuf || keylen != 32) {
GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR,
GOST_R_INVALID_MAC_KEY_LENGTH);
OPENSSL_free(keybuf);
return 0;
}
ret = pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, 32, keybuf);
OPENSSL_free(keybuf);
return ret;
}
if (!strcmp(type, maclen_ctrl_string)) {
char *endptr;
long size = strtol(value, &endptr, 10);
if (*endptr != '\0') {
GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR, GOST_R_INVALID_MAC_SIZE);
return 0;
}
return pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_MAC_LEN, size, NULL);
}
if (strcmp(type, param_ctrl_string) == 0) {
ASN1_OBJECT *obj = OBJ_txt2obj(value, 0);
const struct gost_cipher_info *param = NULL;
if (obj == NULL) {
GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR, GOST_R_INVALID_MAC_PARAMS);
return 0;
}
param = get_encryption_params(obj);
ASN1_OBJECT_free(obj);
if (param == NULL) {
GOSTerr(GOST_F_PKEY_GOST_MAC_CTRL_STR, GOST_R_INVALID_MAC_PARAMS);
return 0;
}
return pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_GOST_PARAMSET, 0,
(void *)param);
}
return -2;
}
static int pkey_gost_omac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2, size_t max_size)
{
struct gost_mac_pmeth_data *data =
(struct gost_mac_pmeth_data *)EVP_PKEY_CTX_get_data(ctx);
switch (type) {
case EVP_PKEY_CTRL_MD:
{
int nid = EVP_MD_type((const EVP_MD *)p2);
if (nid != NID_magma_mac && nid != NID_grasshopper_mac
&& nid != NID_id_tc26_cipher_gostr3412_2015_kuznyechik_ctracpkm_omac /* FIXME beldmit */
&& nid != NID_id_tc26_cipher_gostr3412_2015_magma_ctracpkm_omac) {
GOSTerr(GOST_F_PKEY_GOST_OMAC_CTRL,
GOST_R_INVALID_DIGEST_TYPE);
return 0;
}
data->md = (EVP_MD *)p2;
return 1;
}
case EVP_PKEY_CTRL_GET_MD:
*(const EVP_MD **)p2 = data->md;
return 1;
case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
case EVP_PKEY_CTRL_PKCS7_DECRYPT:
case EVP_PKEY_CTRL_PKCS7_SIGN:
return 1;
case EVP_PKEY_CTRL_SET_MAC_KEY:
if (p1 != 32) {
GOSTerr(GOST_F_PKEY_GOST_OMAC_CTRL, GOST_R_INVALID_MAC_KEY_LENGTH);
return 0;
}
memcpy(data->key, p2, 32);
data->key_set = 1;
return 1;
case EVP_PKEY_CTRL_DIGESTINIT:
{
EVP_MD_CTX *mctx = p2;
if (!data->key_set) {
struct gost_mac_key *key;
EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx);
if (!pkey) {
GOSTerr(GOST_F_PKEY_GOST_OMAC_CTRL,
GOST_R_MAC_KEY_NOT_SET);
return 0;
}
key = EVP_PKEY_get0(pkey);
if (!key) {
GOSTerr(GOST_F_PKEY_GOST_OMAC_CTRL,
GOST_R_MAC_KEY_NOT_SET);
return 0;
}
return EVP_MD_meth_get_ctrl(EVP_MD_CTX_md(mctx))
(mctx, EVP_MD_CTRL_SET_KEY, 0, key);
} else {
return EVP_MD_meth_get_ctrl(EVP_MD_CTX_md(mctx))
(mctx, EVP_MD_CTRL_SET_KEY, 32, &(data->key));
}
}
case EVP_PKEY_CTRL_MAC_LEN:
{
if (p1 < 1 || p1 > max_size) {
GOSTerr(GOST_F_PKEY_GOST_OMAC_CTRL, GOST_R_INVALID_MAC_SIZE);
return 0;
}
data->mac_size = p1;
return 1;
}
}
return -2;
}
static int pkey_gost_magma_mac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
{
return pkey_gost_omac_ctrl(ctx, type, p1, p2, 8);
}
static int pkey_gost_grasshopper_mac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
{
return pkey_gost_omac_ctrl(ctx, type, p1, p2, 16);
}
static int pkey_gost_omac_ctrl_str(EVP_PKEY_CTX *ctx,
const char *type, const char *value, size_t max_size)
{
if (strcmp(type, key_ctrl_string) == 0) {
if (strlen(value) != 32) {
GOSTerr(GOST_F_PKEY_GOST_OMAC_CTRL_STR,
GOST_R_INVALID_MAC_KEY_LENGTH);
return 0;
}
return pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,
32, (char *)value);
}
if (strcmp(type, hexkey_ctrl_string) == 0) {
long keylen;
int ret;
unsigned char *keybuf = string_to_hex(value, &keylen);
if (!keybuf || keylen != 32) {
GOSTerr(GOST_F_PKEY_GOST_OMAC_CTRL_STR,
GOST_R_INVALID_MAC_KEY_LENGTH);
OPENSSL_free(keybuf);
return 0;
}
ret = pkey_gost_mac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, 32, keybuf);
OPENSSL_free(keybuf);
return ret;
}
if (!strcmp(type, maclen_ctrl_string)) {
char *endptr;
long size = strtol(value, &endptr, 10);
if (*endptr != '\0') {
GOSTerr(GOST_F_PKEY_GOST_OMAC_CTRL_STR, GOST_R_INVALID_MAC_SIZE);
return 0;
}
return pkey_gost_omac_ctrl(ctx, EVP_PKEY_CTRL_MAC_LEN, size, NULL, max_size);
}
return -2;
}
static int pkey_gost_magma_mac_ctrl_str(EVP_PKEY_CTX *ctx,
const char *type, const char *value)
{
return pkey_gost_omac_ctrl_str(ctx, type, value, 8);
}
static int pkey_gost_grasshopper_mac_ctrl_str(EVP_PKEY_CTX *ctx,
const char *type, const char *value)
{
return pkey_gost_omac_ctrl_str(ctx, type, value, 8);
}
static int pkey_gost_mac_keygen_base(EVP_PKEY_CTX *ctx,
EVP_PKEY *pkey, int mac_nid)
{
struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
struct gost_mac_key *keydata;
if (!data || !data->key_set) {
GOSTerr(GOST_F_PKEY_GOST_MAC_KEYGEN_BASE, GOST_R_MAC_KEY_NOT_SET);
return 0;
}
keydata = OPENSSL_malloc(sizeof(struct gost_mac_key));
if (keydata == NULL)
return 0;
memcpy(keydata->key, data->key, 32);
keydata->mac_param_nid = data->mac_param_nid;
keydata->mac_size = data->mac_size;
EVP_PKEY_assign(pkey, mac_nid, keydata);
return 1;
}
static int pkey_gost_mac_keygen_12(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
{
return pkey_gost_mac_keygen_base(ctx, pkey, NID_gost_mac_12);
}
static int pkey_gost_mac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
{
return pkey_gost_mac_keygen_base(ctx, pkey, NID_id_Gost28147_89_MAC);
}
static int pkey_gost_magma_mac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
{
return pkey_gost_mac_keygen_base(ctx, pkey, NID_magma_mac);
}
static int pkey_gost_grasshopper_mac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
{
return pkey_gost_mac_keygen_base(ctx, pkey, NID_grasshopper_mac);
}
static int pkey_gost_mac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
{
struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
if (data == NULL) {
pkey_gost_mac_init(ctx);
}
data = EVP_PKEY_CTX_get_data(ctx);
if (!data) {
GOSTerr(GOST_F_PKEY_GOST_MAC_SIGNCTX_INIT, GOST_R_MAC_KEY_NOT_SET);
return 0;
}
return 1;
}
static int pkey_gost_magma_mac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
{
struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
if (data == NULL) {
pkey_gost_omac_init(ctx, 4);
}
data = EVP_PKEY_CTX_get_data(ctx);
if (!data) {
GOSTerr(GOST_F_PKEY_GOST_MAGMA_MAC_SIGNCTX_INIT, GOST_R_MAC_KEY_NOT_SET);
return 0;
}
return 1;
}
static int pkey_gost_grasshopper_mac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
{
struct gost_mac_pmeth_data *data = EVP_PKEY_CTX_get_data(ctx);
if (data == NULL) {