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 "gost_lcl.h"
  14 #include <openssl/evp.h>
  15 #include <openssl/rand.h>
  16 #include <openssl/err.h>
  17 #include <openssl/asn1.h>
  18 #include <string.h>
  19
  20 #define T(e) if (!(e)) {\
  21         ERR_print_errors_fp(stderr);\
  22         OpenSSLDie(__FILE__, __LINE__, #e);\
  23     }
  24
  25 #define cRED    "\033[1;31m"
  26 #define cDRED   "\033[0;31m"
  27 #define cGREEN  "\033[1;32m"
  28 #define cDGREEN "\033[0;32m"
  29 #define cNORM   "\033[m"
  30 #define TEST_ASSERT(e) {if ((test = (e))) \
  31                  printf(cRED "Test FAILED\n" cNORM); \
  32              else \
  33                  printf(cGREEN "Test passed\n" cNORM);}
  34
  35 enum e_mode {
  36     E_ECB = 0,
  37     E_CTR,
  38     E_OFB,
  39     E_CBC,
  40     E_CFB,
  41 };
  42
  43 /* Test key from both GOST R 34.12-2015 and GOST R 34.13-2015. */
  44 static const unsigned char K[] = {
  45     0x88,0x99,0xaa,0xbb,0xcc,0xdd,0xee,0xff,0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,
  46     0xfe,0xdc,0xba,0x98,0x76,0x54,0x32,0x10,0x01,0x23,0x45,0x67,0x89,0xab,0xcd,0xef,
  47 };
  48
  49 /* Plaintext from GOST R 34.13-2015 A.1.
  50  * First 16 bytes is vector (a) from GOST R 34.12-2015 A.1. */
  51 static const unsigned char P[] = {
  52     0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x00,0xff,0xee,0xdd,0xcc,0xbb,0xaa,0x99,0x88,
  53     0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xaa,0xbb,0xcc,0xee,0xff,0x0a,
  54     0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xaa,0xbb,0xcc,0xee,0xff,0x0a,0x00,
  55     0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xaa,0xbb,0xcc,0xee,0xff,0x0a,0x00,0x11,
  56 };
  57 static const unsigned char E[6][sizeof(P)] = {
  58     { /* ECB test vectors from GOST R 34.13-2015  A.1.1 */
  59         /* first 16 bytes is vector (b) from GOST R 34.12-2015 A.1 */
  60         0x7f,0x67,0x9d,0x90,0xbe,0xbc,0x24,0x30,0x5a,0x46,0x8d,0x42,0xb9,0xd4,0xed,0xcd,
  61         0xb4,0x29,0x91,0x2c,0x6e,0x00,0x32,0xf9,0x28,0x54,0x52,0xd7,0x67,0x18,0xd0,0x8b,
  62         0xf0,0xca,0x33,0x54,0x9d,0x24,0x7c,0xee,0xf3,0xf5,0xa5,0x31,0x3b,0xd4,0xb1,0x57,
  63         0xd0,0xb0,0x9c,0xcd,0xe8,0x30,0xb9,0xeb,0x3a,0x02,0xc4,0xc5,0xaa,0x8a,0xda,0x98,
  64     },
  65     { /* CTR test vectors from GOST R 34.13-2015  A.1.2 */
  66         0xf1,0x95,0xd8,0xbe,0xc1,0x0e,0xd1,0xdb,0xd5,0x7b,0x5f,0xa2,0x40,0xbd,0xa1,0xb8,
  67         0x85,0xee,0xe7,0x33,0xf6,0xa1,0x3e,0x5d,0xf3,0x3c,0xe4,0xb3,0x3c,0x45,0xde,0xe4,
  68         0xa5,0xea,0xe8,0x8b,0xe6,0x35,0x6e,0xd3,0xd5,0xe8,0x77,0xf1,0x35,0x64,0xa3,0xa5,
  69         0xcb,0x91,0xfa,0xb1,0xf2,0x0c,0xba,0xb6,0xd1,0xc6,0xd1,0x58,0x20,0xbd,0xba,0x73,
  70     },
  71     { /* OFB test vector generated from canonical implementation */
  72         0x81,0x80,0x0a,0x59,0xb1,0x84,0x2b,0x24,0xff,0x1f,0x79,0x5e,0x89,0x7a,0xbd,0x95,
  73         0x77,0x91,0x46,0xdb,0x2d,0x93,0xa9,0x4e,0xd9,0x3c,0xf6,0x8b,0x32,0x39,0x7f,0x19,
  74         0xe9,0x3c,0x9e,0x57,0x44,0x1d,0x87,0x05,0x45,0xf2,0x40,0x36,0xa5,0x8c,0xee,0xa3,
  75         0xcf,0x3f,0x00,0x61,0xd5,0x64,0x23,0x54,0x5b,0x96,0x0d,0x86,0x4c,0xc8,0x68,0xda,
  76     },
  77     { /* CBC test vector generated from canonical implementation */
  78         0x68,0x99,0x72,0xd4,0xa0,0x85,0xfa,0x4d,0x90,0xe5,0x2e,0x3d,0x6d,0x7d,0xcc,0x27,
  79         0xab,0xf1,0x70,0xb2,0xb2,0x26,0xc3,0x01,0x0c,0xcf,0xa1,0x36,0xd6,0x59,0xcd,0xaa,
  80         0xca,0x71,0x92,0x72,0xab,0x1d,0x43,0x8e,0x15,0x50,0x7d,0x52,0x1e,0xcd,0x55,0x22,
  81         0xe0,0x11,0x08,0xff,0x8d,0x9d,0x3a,0x6d,0x8c,0xa2,0xa5,0x33,0xfa,0x61,0x4e,0x71,
  82     },
  83     { /* CFB test vector generated from canonical implementation */
  84         0x81,0x80,0x0a,0x59,0xb1,0x84,0x2b,0x24,0xff,0x1f,0x79,0x5e,0x89,0x7a,0xbd,0x95,
  85         0x68,0xc1,0xb9,0x9c,0x4d,0xf5,0x9c,0xc7,0x95,0x1e,0x37,0x39,0xb5,0xb3,0xcd,0xbf,
  86         0x07,0x3f,0x4d,0xd2,0xd6,0xde,0xb3,0xcf,0xb0,0x26,0x54,0x5f,0x7a,0xf1,0xd8,0xe8,
  87         0xe1,0xc8,0x52,0xe9,0xa8,0x56,0x71,0x62,0xdb,0xb5,0xda,0x7f,0x66,0xde,0xa9,0x26,
  88     },
  89 };
  90 static const unsigned char iv_ctr[]     = { 0x12,0x34,0x56,0x78,0x90,0xab,0xce,0xf0 };
  91 /* truncated to 128-bits IV */
  92 static const unsigned char iv_128bit[]  = { 0x12,0x34,0x56,0x78,0x90,0xab,0xce,0xf0,0xa1,0xb2,0xc3,0xd4,0xe5,0xf0,0x01,0x12 };
  93 static const unsigned char *iv[6] = {
  94     NULL,       /* ecb */
  95     iv_ctr,
  96     iv_128bit,  /* ofb */
  97     iv_128bit,  /* cbc*/
  98     iv_128bit,  /* cfb */
  99 };
 100
 101 static void hexdump(const void *ptr, size_t len)
 102 {
 103     const unsigned char *p = ptr;
 104     size_t i, j;
 105
 106     for (i = 0; i < len; i += j) {
 107         for (j = 0; j < 16 && i + j < len; j++)
 108             printf("%s%02x", j? "" : " ", p[i + j]);
 109     }
 110     printf("\n");
 111 }
 112
 113 /* Test vectors from GOST R 34.13-2015 A.1 which* includes vectors
 114  * from GOST R 34.12-2015 A.1 as first block of ecb mode. */
 115 static int test_block(const EVP_CIPHER *type, const char *mode, enum e_mode t)
 116 {
 117     EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new();
 118     unsigned char c[sizeof(P)];
 119     int outlen, tmplen;
 120     int ret = 0, test;
 121
 122     OPENSSL_assert(ctx);
 123     printf("Encryption test from GOST R 34.13-2015 [%s] \n", mode);
 124     if (!t) {
 125         /* output plain-text only once */
 126         printf("  p[%zu] = ", sizeof(P));
 127         hexdump(P, sizeof(P));
 128     }
 129     /* test with single big chunk */
 130     EVP_CIPHER_CTX_init(ctx);
 131     T(EVP_CipherInit_ex(ctx, type, NULL, K, iv[t], 1));
 132     T(EVP_CIPHER_CTX_set_padding(ctx, 0));
 133     memset(c, 0, sizeof(c));
 134     T(EVP_CipherUpdate(ctx, c, &outlen, P, sizeof(P)));
 135     T(EVP_CipherFinal_ex(ctx, c + outlen, &tmplen));
 136     EVP_CIPHER_CTX_cleanup(ctx);
 137     printf("  c[%d] = ", outlen);
 138     hexdump(c, outlen);
 139
 140     TEST_ASSERT(outlen != sizeof(P) ||
 141         memcmp(c, E[t], sizeof(P)));
 142     ret |= test;
 143
 144     /* test with small chunks of block size */
 145     printf("Chunked encryption test from GOST R 34.13-2015 [%s] \n", mode);
 146     int blocks = sizeof(P) / GRASSHOPPER_BLOCK_SIZE;
 147     int z;
 148     EVP_CIPHER_CTX_init(ctx);
 149     T(EVP_CipherInit_ex(ctx, type, NULL, K, iv[t], 1));
 150     T(EVP_CIPHER_CTX_set_padding(ctx, 0));
 151     memset(c, 0, sizeof(c));
 152     for (z = 0; z < blocks; z++) {
 153         int offset = z * GRASSHOPPER_BLOCK_SIZE;
 154         int sz = GRASSHOPPER_BLOCK_SIZE;
 155
 156         T(EVP_CipherUpdate(ctx, c + offset, &outlen, P + offset, sz));
 157     }
 158     outlen = z * GRASSHOPPER_BLOCK_SIZE;
 159     T(EVP_CipherFinal_ex(ctx, c + outlen, &tmplen));
 160     EVP_CIPHER_CTX_cleanup(ctx);
 161     printf("  c[%d] = ", outlen);
 162     hexdump(c, outlen);
 163
 164     TEST_ASSERT(outlen != sizeof(P) ||
 165         memcmp(c, E[t], sizeof(P)));
 166     ret |= test;
 167
 168     /* test with single big chunk */
 169     printf("Decryption test from GOST R 34.13-2015 [%s] \n", mode);
 170     EVP_CIPHER_CTX_init(ctx);
 171     T(EVP_CipherInit_ex(ctx, type, NULL, K, iv[t], 0));
 172     T(EVP_CIPHER_CTX_set_padding(ctx, 0));
 173     memset(c, 0, sizeof(c));
 174     T(EVP_CipherUpdate(ctx, c, &outlen, E[t], sizeof(P)));
 175     T(EVP_CipherFinal_ex(ctx, c + outlen, &tmplen));
 176     EVP_CIPHER_CTX_cleanup(ctx);
 177     EVP_CIPHER_CTX_free(ctx);
 178     printf("  d[%d] = ", outlen);
 179     hexdump(c, outlen);
 180
 181     TEST_ASSERT(outlen != sizeof(P) ||
 182         memcmp(c, P, sizeof(P)));
 183     ret |= test;
 184
 185     return ret;
 186 }
 187
 188 static int test_stream(const EVP_CIPHER *type, const char *mode, enum e_mode t)
 189 {
 190     EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new();
 191     int ret = 0, test;
 192     int z;
 193
 194     OPENSSL_assert(ctx);
 195     /* Cycle through all lengths from 1 upto maximum size */
 196     printf("Stream encryption test from GOST R 34.13-2015 [%s] \n", mode);
 197     for (z = 1; z <= sizeof(P); z++) {
 198         unsigned char c[sizeof(P)];
 199         int outlen, tmplen;
 200         int sz;
 201         int i;
 202
 203         EVP_CIPHER_CTX_init(ctx);
 204         EVP_CipherInit_ex(ctx, type, NULL, K, iv[t], 1);
 205         EVP_CIPHER_CTX_set_padding(ctx, 0);
 206         memset(c, 0xff, sizeof(c));
 207         for (i = 0; i < sizeof(P); i += z) {
 208             if (i + z > sizeof(P))
 209                 sz = sizeof(P) - i;
 210             else
 211                 sz = z;
 212             EVP_CipherUpdate(ctx, c + i, &outlen, P + i, sz);
 213             OPENSSL_assert(outlen == sz);
 214         }
 215         outlen = i - z + sz;
 216         EVP_CipherFinal_ex(ctx, c + outlen, &tmplen);
 217         EVP_CIPHER_CTX_cleanup(ctx);
 218
 219         test = outlen != sizeof(P) ||
 220             memcmp(c, E[t], sizeof(P));
 221         printf("%c", test ? 'E' : '+');
 222         ret |= test;
 223     }
 224     printf("\n");
 225     TEST_ASSERT(ret);
 226     EVP_CIPHER_CTX_free(ctx);
 227
 228     return ret;
 229 }
 230
 231 static int test_omac()
 232 {
 233     EVP_MD_CTX *ctx = EVP_MD_CTX_new();
 234     unsigned char mac[] = { 0x33,0x6f,0x4d,0x29,0x60,0x59,0xfb,0xe3 };
 235     unsigned char md_value[EVP_MAX_MD_SIZE];
 236     unsigned int md_len;
 237     int test;
 238
 239     OPENSSL_assert(ctx);
 240     printf("OMAC test from GOST R 34.13-2015\n");
 241     EVP_MD_CTX_init(ctx);
 242     /* preload cbc cipher for omac set key */
 243     EVP_add_cipher(cipher_gost_grasshopper_cbc());
 244     T(EVP_DigestInit_ex(ctx, grasshopper_omac(), NULL));
 245     if (EVP_MD_CTX_size(ctx) != sizeof(mac)) {
 246         /* strip const out of EVP_MD_CTX_md() to
 247          * overwrite output size, as test vector is 8 bytes */
 248         printf("Resize result size from %d to %zu\n", EVP_MD_CTX_size(ctx), sizeof(mac));
 249         T(EVP_MD_meth_set_result_size((EVP_MD *)EVP_MD_CTX_md(ctx), sizeof(mac)));
 250     }
 251     T(EVP_MD_meth_get_ctrl(EVP_MD_CTX_md(ctx))(ctx, EVP_MD_CTRL_SET_KEY, sizeof(K), (void *)K));
 252     T(EVP_DigestUpdate(ctx, P, sizeof(P)));
 253     T(EVP_DigestFinal_ex(ctx, md_value, &md_len));
 254     EVP_MD_CTX_free(ctx);
 255     printf("  MAC[%u] = ", md_len);
 256     hexdump(md_value, md_len);
 257
 258     TEST_ASSERT(md_len != sizeof(mac) ||
 259         memcmp(mac, md_value, md_len));
 260
 261     return test;
 262 }
 263
 264 int main(int argc, char **argv)
 265 {
 266     int ret = 0;
 267
 268     ret |= test_block(cipher_gost_grasshopper_ecb(), "ecb", E_ECB);
 269     ret |= test_block(cipher_gost_grasshopper_ctr(), "ctr", E_CTR);
 270     ret |= test_stream(cipher_gost_grasshopper_ctr(), "ctr", E_CTR);
 271     /*
 272      * Other modes (ofb, cbc, cfb) is impossible to test to match GOST R
 273      * 34.13-2015 test vectors exactly, due to these vectors having exceeding
 274      * IV length value (m) = 256 bits, while openssl have hard-coded limit
 275      * of maximum IV length of 128 bits (EVP_MAX_IV_LENGTH).
 276      * Also, current grasshopper code having fixed IV length of 128 bits.
 277      *
 278      * Thus, new test vectors are generated with truncated 128-bit IV using
 279      * canonical GOST implementation from TC26.
 280      */
 281     ret |= test_block(cipher_gost_grasshopper_ofb(), "ofb", E_OFB);
 282     ret |= test_stream(cipher_gost_grasshopper_ctr(), "ofb", E_CTR);
 283     ret |= test_block(cipher_gost_grasshopper_cbc(), "cbc", E_CBC);
 284     ret |= test_block(cipher_gost_grasshopper_cfb(), "cfb", E_CFB);
 285
 286     ret |= test_omac();
 287
 288     if (ret)
 289         printf(cDRED "= Some tests FAILED!\n" cNORM);
 290     else
 291         printf(cDGREEN "= All tests passed!\n" cNORM);
 292     return ret;
 293 }