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