lib/libcrypto/evp/e_gost2814789.c

   1 /* $OpenBSD: e_gost2814789.c,v 1.4 2017/01/29 17:49:23 beck Exp $ */
   2 /*
   3  * Copyright (c) 2014 Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
   4  * Copyright (c) 2005-2006 Cryptocom LTD
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  *
  18  * 3. All advertising materials mentioning features or use of this
  19  *    software must display the following acknowledgment:
  20  *    "This product includes software developed by the OpenSSL Project
  21  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  22  *
  23  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  24  *    endorse or promote products derived from this software without
  25  *    prior written permission. For written permission, please contact
  26  *    openssl-core@openssl.org.
  27  *
  28  * 5. Products derived from this software may not be called "OpenSSL"
  29  *    nor may "OpenSSL" appear in their names without prior written
  30  *    permission of the OpenSSL Project.
  31  *
  32  * 6. Redistributions of any form whatsoever must retain the following
  33  *    acknowledgment:
  34  *    "This product includes software developed by the OpenSSL Project
  35  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  36  *
  37  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  38  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  39  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  40  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  41  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  42  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  43  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  44  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  45  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  46  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  47  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  48  * OF THE POSSIBILITY OF SUCH DAMAGE.
  49  * ====================================================================
  50  */
  51 #include <string.h>
  52
  53 #include <openssl/opensslconf.h>
  54
  55 #ifndef OPENSSL_NO_GOST
  56 #include <openssl/evp.h>
  57 #include <openssl/err.h>
  58 #include <openssl/gost.h>
  59 #include "evp_locl.h"
  60
  61 typedef struct {
  62         GOST2814789_KEY ks;
  63         int param_nid;
  64 } EVP_GOST2814789_CTX;
  65
  66 static int
  67 gost2814789_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
  68 {
  69         EVP_GOST2814789_CTX *c = ctx->cipher_data;
  70
  71         switch (type) {
  72         case EVP_CTRL_PBE_PRF_NID:
  73                 if (ptr != NULL) {
  74                         *((int *)ptr) = NID_id_HMACGostR3411_94;
  75                         return 1;
  76                 } else {
  77                         return 0;
  78                 }
  79         case EVP_CTRL_INIT:
  80                 /* Default value to have any s-box set at all */
  81                 c->param_nid = NID_id_Gost28147_89_CryptoPro_A_ParamSet;
  82                 return Gost2814789_set_sbox(&c->ks, c->param_nid);
  83         case EVP_CTRL_GOST_SET_SBOX:
  84                 return Gost2814789_set_sbox(&c->ks, arg);
  85         default:
  86                 return -1;
  87         }
  88 }
  89
  90 static int
  91 gost2814789_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
  92     const unsigned char *iv, int enc)
  93 {
  94         EVP_GOST2814789_CTX *c = ctx->cipher_data;
  95
  96         return Gost2814789_set_key(&c->ks, key, ctx->key_len * 8);
  97 }
  98
  99 int
 100 gost2814789_set_asn1_params(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
 101 {
 102         int len = 0;
 103         unsigned char *buf = NULL;
 104         unsigned char *p = NULL;
 105         EVP_GOST2814789_CTX *c = ctx->cipher_data;
 106         ASN1_OCTET_STRING *os = NULL;
 107         GOST_CIPHER_PARAMS *gcp = GOST_CIPHER_PARAMS_new();
 108
 109         if (gcp == NULL) {
 110                 GOSTerror(ERR_R_MALLOC_FAILURE);
 111                 return 0;
 112         }
 113         if (ASN1_OCTET_STRING_set(gcp->iv, ctx->iv, ctx->cipher->iv_len) == 0) {
 114                 GOST_CIPHER_PARAMS_free(gcp);
 115                 GOSTerror(ERR_R_ASN1_LIB);
 116                 return 0;
 117         }
 118         ASN1_OBJECT_free(gcp->enc_param_set);
 119         gcp->enc_param_set = OBJ_nid2obj(c->param_nid);
 120
 121         len = i2d_GOST_CIPHER_PARAMS(gcp, NULL);
 122         p = buf = malloc(len);
 123         if (buf == NULL) {
 124                 GOST_CIPHER_PARAMS_free(gcp);
 125                 GOSTerror(ERR_R_MALLOC_FAILURE);
 126                 return 0;
 127         }
 128         i2d_GOST_CIPHER_PARAMS(gcp, &p);
 129         GOST_CIPHER_PARAMS_free(gcp);
 130
 131         os = ASN1_OCTET_STRING_new();
 132         if (os == NULL) {
 133                 free(buf);
 134                 GOSTerror(ERR_R_MALLOC_FAILURE);
 135                 return 0;
 136         }
 137         if (ASN1_OCTET_STRING_set(os, buf, len) == 0) {
 138                 ASN1_OCTET_STRING_free(os);
 139                 free(buf);
 140                 GOSTerror(ERR_R_ASN1_LIB);
 141                 return 0;
 142         }
 143         free(buf);
 144
 145         ASN1_TYPE_set(params, V_ASN1_SEQUENCE, os);
 146         return 1;
 147 }
 148
 149 int
 150 gost2814789_get_asn1_params(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
 151 {
 152         int ret = -1;
 153         int len;
 154         GOST_CIPHER_PARAMS *gcp = NULL;
 155         EVP_GOST2814789_CTX *c = ctx->cipher_data;
 156         unsigned char *p;
 157
 158         if (ASN1_TYPE_get(params) != V_ASN1_SEQUENCE)
 159                 return ret;
 160
 161         p = params->value.sequence->data;
 162
 163         gcp = d2i_GOST_CIPHER_PARAMS(NULL, (const unsigned char **)&p,
 164             params->value.sequence->length);
 165
 166         len = gcp->iv->length;
 167         if (len != ctx->cipher->iv_len) {
 168                 GOST_CIPHER_PARAMS_free(gcp);
 169                 GOSTerror(GOST_R_INVALID_IV_LENGTH);
 170                 return -1;
 171         }
 172
 173         if (!Gost2814789_set_sbox(&c->ks, OBJ_obj2nid(gcp->enc_param_set))) {
 174                 GOST_CIPHER_PARAMS_free(gcp);
 175                 return -1;
 176         }
 177         c->param_nid = OBJ_obj2nid(gcp->enc_param_set);
 178
 179         memcpy(ctx->oiv, gcp->iv->data, len);
 180         memcpy(ctx->iv, gcp->iv->data, len);
 181
 182         GOST_CIPHER_PARAMS_free(gcp);
 183
 184         return 1;
 185 }
 186
 187 BLOCK_CIPHER_func_ecb(gost2814789, Gost2814789, EVP_GOST2814789_CTX, ks)
 188 BLOCK_CIPHER_func_cfb(gost2814789, Gost2814789, 64, EVP_GOST2814789_CTX, ks)
 189
 190 static int
 191 gost2814789_cnt_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 192     const unsigned char *in, size_t inl)
 193 {
 194         EVP_GOST2814789_CTX *c = ctx->cipher_data;
 195
 196         while (inl >= EVP_MAXCHUNK) {
 197                 Gost2814789_cnt_encrypt(in, out, (long)EVP_MAXCHUNK, &c->ks,
 198                     ctx->iv, ctx->buf, &ctx->num);
 199                 inl -= EVP_MAXCHUNK;
 200                 in += EVP_MAXCHUNK;
 201                 out += EVP_MAXCHUNK;
 202         }
 203
 204         if (inl)
 205                 Gost2814789_cnt_encrypt(in, out, inl, &c->ks, ctx->iv, ctx->buf,
 206                     &ctx->num);
 207         return 1;
 208 }
 209
 210 /* gost89 is CFB-64 */
 211 #define NID_gost89_cfb64 NID_id_Gost28147_89
 212
 213 BLOCK_CIPHER_def_ecb(gost2814789, EVP_GOST2814789_CTX, NID_gost89, 8, 32,
 214                      EVP_CIPH_NO_PADDING | EVP_CIPH_CTRL_INIT,
 215                      gost2814789_init_key, NULL, gost2814789_set_asn1_params,
 216                      gost2814789_get_asn1_params, gost2814789_ctl)
 217 BLOCK_CIPHER_def_cfb(gost2814789, EVP_GOST2814789_CTX, NID_gost89, 32, 8, 64,
 218                      EVP_CIPH_NO_PADDING | EVP_CIPH_CTRL_INIT,
 219                      gost2814789_init_key, NULL, gost2814789_set_asn1_params,
 220                      gost2814789_get_asn1_params, gost2814789_ctl)
 221 BLOCK_CIPHER_def1(gost2814789, cnt, cnt, OFB, EVP_GOST2814789_CTX, NID_gost89,
 222                   1, 32, 8, EVP_CIPH_NO_PADDING | EVP_CIPH_CTRL_INIT,
 223                   gost2814789_init_key, NULL, gost2814789_set_asn1_params,
 224                   gost2814789_get_asn1_params, gost2814789_ctl)
 225 #endif