test_grasshopper.c

   1 /*
   2  * Copyright (C) 2018 vt@altlinux.org. All Rights Reserved.
   3  *
   4  * Contents licensed under the terms of the OpenSSL license
   5  * See https://www.openssl.org/source/license.html for details
   6  */
   7
   8 #include "gost_grasshopper_cipher.h"
   9 #include "gost_grasshopper_defines.h"
  10 #include "gost_grasshopper_math.h"
  11 #include "gost_grasshopper_core.h"
  12 #include "e_gost_err.h"
  13 #include <openssl/evp.h>
  14 #include <openssl/rand.h>
  15 #include <openssl/err.h>
  16 #include <openssl/asn1.h>
  17 #include <string.h>
  18
  19 enum e_mode {
  20     E_ECB = 0,
  21     E_CTR
  22 };
  23
  24 static void hexdump(void *ptr, size_t len)
  25 {
  26     unsigned char *p = ptr;
  27     size_t i;
  28
  29     for (i = 0; i < len; i++)
  30         printf(" %02x", p[i]);
  31     printf("\n");
  32 }
  33
  34 /* Test vectors from GOST R 34.13-2015 A.1 which* includes vectors
  35  * from GOST R 34.12-2015 A.1 as first block of ecb mode */
  36 static int test_modes(const EVP_CIPHER *type, const char *mode, enum e_mode t)
  37 {
  38     EVP_CIPHER_CTX ctx;
  39     unsigned char k[] = {
  40         0x88,0x99,0xaa,0xbb,0xcc,0xdd,0xee,0xff,0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,
  41         0xfe,0xdc,0xba,0x98,0x76,0x54,0x32,0x10,0x01,0x23,0x45,0x67,0x89,0xab,0xcd,0xef,
  42     };
  43     unsigned char p[] = {
  44         /* plaintext from GOST R 34.13-2015 A.1 */
  45         /* first 16 bytes is vector (a) from GOST R 34.12-2015 A.1 */
  46         0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x00,0xff,0xee,0xdd,0xcc,0xbb,0xaa,0x99,0x88,
  47         0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xaa,0xbb,0xcc,0xee,0xff,0x0a,
  48         0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xaa,0xbb,0xcc,0xee,0xff,0x0a,0x00,
  49         0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xaa,0xbb,0xcc,0xee,0xff,0x0a,0x00,0x11,
  50     };
  51     unsigned char e[4][sizeof(p)] = {
  52         { /* ecb test vectors from GOST R 34.13-2015  A.1.1 */
  53             /* first 16 bytes is vector (b) from GOST R 34.12-2015 A.1 */
  54             0x7f,0x67,0x9d,0x90,0xbe,0xbc,0x24,0x30,0x5a,0x46,0x8d,0x42,0xb9,0xd4,0xed,0xcd,
  55             0xb4,0x29,0x91,0x2c,0x6e,0x00,0x32,0xf9,0x28,0x54,0x52,0xd7,0x67,0x18,0xd0,0x8b,
  56             0xf0,0xca,0x33,0x54,0x9d,0x24,0x7c,0xee,0xf3,0xf5,0xa5,0x31,0x3b,0xd4,0xb1,0x57,
  57             0xd0,0xb0,0x9c,0xcd,0xe8,0x30,0xb9,0xeb,0x3a,0x02,0xc4,0xc5,0xaa,0x8a,0xda,0x98,
  58         },
  59         { /* ctr test vectors from GOST R 34.13-2015  A.1.2 */
  60             0xf1,0x95,0xd8,0xbe,0xc1,0x0e,0xd1,0xdb,0xd5,0x7b,0x5f,0xa2,0x40,0xbd,0xa1,0xb8,
  61             0x85,0xee,0xe7,0x33,0xf6,0xa1,0x3e,0x5d,0xf3,0x3c,0xe4,0xb3,0x3c,0x45,0xde,0xe4,
  62             0xa5,0xea,0xe8,0x8b,0xe6,0x35,0x6e,0xd3,0xd5,0xe8,0x77,0xf1,0x35,0x64,0xa3,0xa5,
  63             0xcb,0x91,0xfa,0xb1,0xf2,0x0c,0xba,0xb6,0xd1,0xc6,0xd1,0x58,0x20,0xbd,0xba,0x73,
  64         },
  65     };
  66     unsigned char iv_ctr[] = { 0x12,0x34,0x56,0x78,0x90,0xab,0xce,0xf0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
  67     unsigned char *iv[4] = { NULL, iv_ctr, };
  68     unsigned char c[sizeof(p)];
  69     int outlen, tmplen;
  70     int ret = 0, test;
  71
  72     printf("Encryption test from GOST R 34.13-2015 [%s] \n", mode);
  73     EVP_CIPHER_CTX_init(&ctx);
  74     EVP_CipherInit_ex(&ctx, type, NULL, k, iv[t], 1);
  75     EVP_CIPHER_CTX_set_padding(&ctx, 0);
  76     EVP_CipherUpdate(&ctx, c, &outlen, p, sizeof(p));
  77     EVP_CipherFinal_ex(&ctx, c + outlen, &tmplen);
  78     EVP_CIPHER_CTX_cleanup(&ctx);
  79     // hexdump(c, outlen);
  80
  81     test = outlen != sizeof(p) ||
  82         memcmp(c, e[t], sizeof(p));
  83
  84     printf("Test %s\n", test? "FAILED" : "passed");
  85     ret |= test;
  86
  87     if (t == E_CTR) {
  88         int i;
  89
  90         printf("Stream encryption test from GOST R 34.13-2015 [%s] \n", mode);
  91         EVP_CIPHER_CTX_init(&ctx);
  92         EVP_CipherInit_ex(&ctx, type, NULL, k, iv[t], 1);
  93         EVP_CIPHER_CTX_set_padding(&ctx, 0);
  94         for (i = 0; i < sizeof(p); i++) {
  95             EVP_CipherUpdate(&ctx, c + i, &outlen, p + i, 1);
  96             OPENSSL_assert(outlen == 1);
  97         }
  98         outlen = i;
  99         EVP_CipherFinal_ex(&ctx, c + outlen, &tmplen);
 100         EVP_CIPHER_CTX_cleanup(&ctx);
 101
 102         test = outlen != sizeof(p) ||
 103             memcmp(c, e[t], sizeof(p));
 104
 105         printf("Test %s\n", test? "FAILED" : "passed");
 106 #if 0
 107         ret |= test;
 108 #endif
 109     }
 110
 111     printf("Decryption test from GOST R 34.13-2015 [%s] \n", mode);
 112     EVP_CIPHER_CTX_init(&ctx);
 113     EVP_CipherInit_ex(&ctx, type, NULL, k, iv[t], 0);
 114     EVP_CIPHER_CTX_set_padding(&ctx, 0);
 115     EVP_CipherUpdate(&ctx, c, &outlen, e[t], sizeof(p));
 116     EVP_CipherFinal_ex(&ctx, c + outlen, &tmplen);
 117     EVP_CIPHER_CTX_cleanup(&ctx);
 118
 119     test = outlen != sizeof(p) ||
 120         memcmp(c, p, sizeof(p));
 121
 122     printf("Test %s\n", test? "FAILED" : "passed");
 123     ret |= test;
 124
 125     return ret;
 126 }
 127
 128 int main(int argc, char **argv)
 129 {
 130     int ret = 0;
 131
 132     ret |= test_modes(cipher_gost_grasshopper_ecb(), "ecb", E_ECB);
 133     ret |= test_modes(cipher_gost_grasshopper_ctr(), "ctr", E_CTR);
 134     /*
 135      * Other modes (ofb, cbc, cfb) is impossible to test to match GOST R
 136      * 34.13-2015 test vectors due to these vectors having exceeding IV
 137      * length value (m) = 256 bits, while openssl have hardcoded limit
 138      * of maximum IV length of 128 bits (EVP_MAX_IV_LENGTH).
 139      * Also, current grasshopper code having fixed IV length of 128 bits.
 140      */
 141
 142     return ret;
 143 }