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