yuzu/externals/libressl/crypto/evp/e_gost2814789.c

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2022-04-25 00:29:35 +04:00
/* $OpenBSD: e_gost2814789.c,v 1.5 2021/12/12 21:30:13 tb Exp $ */
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/*
* Copyright (c) 2014 Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
* Copyright (c) 2005-2006 Cryptocom LTD
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*/
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#include <string.h>
#include <openssl/opensslconf.h>
#ifndef OPENSSL_NO_GOST
#include <openssl/evp.h>
#include <openssl/err.h>
#include <openssl/gost.h>
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#include "evp_locl.h"
typedef struct {
GOST2814789_KEY ks;
int param_nid;
} EVP_GOST2814789_CTX;
static int
gost2814789_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
{
EVP_GOST2814789_CTX *c = ctx->cipher_data;
switch (type) {
case EVP_CTRL_PBE_PRF_NID:
if (ptr != NULL) {
*((int *)ptr) = NID_id_HMACGostR3411_94;
return 1;
} else {
return 0;
}
case EVP_CTRL_INIT:
/* Default value to have any s-box set at all */
c->param_nid = NID_id_Gost28147_89_CryptoPro_A_ParamSet;
return Gost2814789_set_sbox(&c->ks, c->param_nid);
case EVP_CTRL_GOST_SET_SBOX:
return Gost2814789_set_sbox(&c->ks, arg);
default:
return -1;
}
}
static int
gost2814789_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
EVP_GOST2814789_CTX *c = ctx->cipher_data;
return Gost2814789_set_key(&c->ks, key, ctx->key_len * 8);
}
int
gost2814789_set_asn1_params(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
{
int len = 0;
unsigned char *buf = NULL;
unsigned char *p = NULL;
EVP_GOST2814789_CTX *c = ctx->cipher_data;
ASN1_OCTET_STRING *os = NULL;
GOST_CIPHER_PARAMS *gcp = GOST_CIPHER_PARAMS_new();
if (gcp == NULL) {
GOSTerror(ERR_R_MALLOC_FAILURE);
return 0;
}
if (ASN1_OCTET_STRING_set(gcp->iv, ctx->iv, ctx->cipher->iv_len) == 0) {
GOST_CIPHER_PARAMS_free(gcp);
GOSTerror(ERR_R_ASN1_LIB);
return 0;
}
ASN1_OBJECT_free(gcp->enc_param_set);
gcp->enc_param_set = OBJ_nid2obj(c->param_nid);
len = i2d_GOST_CIPHER_PARAMS(gcp, NULL);
p = buf = malloc(len);
if (buf == NULL) {
GOST_CIPHER_PARAMS_free(gcp);
GOSTerror(ERR_R_MALLOC_FAILURE);
return 0;
}
i2d_GOST_CIPHER_PARAMS(gcp, &p);
GOST_CIPHER_PARAMS_free(gcp);
os = ASN1_OCTET_STRING_new();
if (os == NULL) {
free(buf);
GOSTerror(ERR_R_MALLOC_FAILURE);
return 0;
}
if (ASN1_OCTET_STRING_set(os, buf, len) == 0) {
ASN1_OCTET_STRING_free(os);
free(buf);
GOSTerror(ERR_R_ASN1_LIB);
return 0;
}
free(buf);
ASN1_TYPE_set(params, V_ASN1_SEQUENCE, os);
return 1;
}
int
gost2814789_get_asn1_params(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
{
int ret = -1;
int len;
GOST_CIPHER_PARAMS *gcp = NULL;
EVP_GOST2814789_CTX *c = ctx->cipher_data;
unsigned char *p;
if (ASN1_TYPE_get(params) != V_ASN1_SEQUENCE)
return ret;
p = params->value.sequence->data;
gcp = d2i_GOST_CIPHER_PARAMS(NULL, (const unsigned char **)&p,
params->value.sequence->length);
len = gcp->iv->length;
if (len != ctx->cipher->iv_len) {
GOST_CIPHER_PARAMS_free(gcp);
GOSTerror(GOST_R_INVALID_IV_LENGTH);
return -1;
}
if (!Gost2814789_set_sbox(&c->ks, OBJ_obj2nid(gcp->enc_param_set))) {
GOST_CIPHER_PARAMS_free(gcp);
return -1;
}
c->param_nid = OBJ_obj2nid(gcp->enc_param_set);
memcpy(ctx->oiv, gcp->iv->data, len);
memcpy(ctx->iv, gcp->iv->data, len);
GOST_CIPHER_PARAMS_free(gcp);
return 1;
}
BLOCK_CIPHER_func_ecb(gost2814789, Gost2814789, EVP_GOST2814789_CTX, ks)
BLOCK_CIPHER_func_cfb(gost2814789, Gost2814789, 64, EVP_GOST2814789_CTX, ks)
static int
gost2814789_cnt_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inl)
{
EVP_GOST2814789_CTX *c = ctx->cipher_data;
while (inl >= EVP_MAXCHUNK) {
Gost2814789_cnt_encrypt(in, out, (long)EVP_MAXCHUNK, &c->ks,
ctx->iv, ctx->buf, &ctx->num);
inl -= EVP_MAXCHUNK;
in += EVP_MAXCHUNK;
out += EVP_MAXCHUNK;
}
if (inl)
Gost2814789_cnt_encrypt(in, out, inl, &c->ks, ctx->iv, ctx->buf,
&ctx->num);
return 1;
}
/* gost89 is CFB-64 */
#define NID_gost89_cfb64 NID_id_Gost28147_89
BLOCK_CIPHER_def_ecb(gost2814789, EVP_GOST2814789_CTX, NID_gost89, 8, 32,
EVP_CIPH_NO_PADDING | EVP_CIPH_CTRL_INIT,
gost2814789_init_key, NULL, gost2814789_set_asn1_params,
gost2814789_get_asn1_params, gost2814789_ctl)
BLOCK_CIPHER_def_cfb(gost2814789, EVP_GOST2814789_CTX, NID_gost89, 32, 8, 64,
EVP_CIPH_NO_PADDING | EVP_CIPH_CTRL_INIT,
gost2814789_init_key, NULL, gost2814789_set_asn1_params,
gost2814789_get_asn1_params, gost2814789_ctl)
BLOCK_CIPHER_def1(gost2814789, cnt, cnt, OFB, EVP_GOST2814789_CTX, NID_gost89,
1, 32, 8, EVP_CIPH_NO_PADDING | EVP_CIPH_CTRL_INIT,
gost2814789_init_key, NULL, gost2814789_set_asn1_params,
gost2814789_get_asn1_params, gost2814789_ctl)
#endif