2 * Copyright (C) 2018 vt@altlinux.org. All Rights Reserved.
4 * Contents licensed under the terms of the OpenSSL license
5 * See https://www.openssl.org/source/license.html for details
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"
14 #include <openssl/evp.h>
15 #include <openssl/rand.h>
16 #include <openssl/err.h>
17 #include <openssl/asn1.h>
20 #define T(e) if (!(e)) {\
21 ERR_print_errors_fp(stderr);\
22 OpenSSLDie(__FILE__, __LINE__, #e);\
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); \
33 printf(cGREEN "Test passed\n" cNORM);}
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,
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,
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,
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,
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.
71 * Thus, new test vectors are generated with truncated 128-bit IV using
72 * canonical GOST implementation from TC26.
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,
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,
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,
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 };
102 const EVP_CIPHER *(*type)(void);
104 const unsigned char *plaintext;
105 const unsigned char *expected;
107 const unsigned char *iv;
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 },
120 static void hexdump(const void *ptr, size_t len)
122 const unsigned char *p = ptr;
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]);
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)
136 EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new();
137 unsigned char c[size];
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));
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);
156 TEST_ASSERT(outlen != size || memcmp(c, exp, size));
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;
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));
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;
173 T(EVP_CipherUpdate(ctx, c + offset, &outlen, pt + offset, sz));
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);
181 TEST_ASSERT(outlen != size || memcmp(c, exp, size));
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));
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);
199 TEST_ASSERT(outlen != size || memcmp(c, pt, size));
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)
209 EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new();
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];
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));
227 T(EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_KEY_MESH, 256 / 8, NULL));
228 for (i = 0; i < size; i += z) {
233 EVP_CipherUpdate(ctx, c + i, &outlen, pt + i, sz);
234 OPENSSL_assert(outlen == sz);
237 EVP_CipherFinal_ex(ctx, c + outlen, &tmplen);
238 EVP_CIPHER_CTX_cleanup(ctx);
240 test = outlen != size || memcmp(c, exp, size);
241 printf("%c", test ? 'E' : '+');
246 EVP_CIPHER_CTX_free(ctx);
251 int main(int argc, char **argv)
254 const struct testcase *t;
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);
261 ret |= test_stream(t->type(), t->name,
262 t->plaintext, t->expected, t->size,
263 t->iv, t->iv_size, t->acpkm);
267 printf(cDRED "= Some tests FAILED!\n" cNORM);
269 printf(cDGREEN "= All tests passed!\n" cNORM);