2 * Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
14 #include <openssl/bio.h>
15 #include <openssl/evp.h>
16 #include <openssl/bn.h>
17 #include <openssl/crypto.h>
18 #include <openssl/err.h>
19 #include <openssl/rand.h>
22 #ifndef OPENSSL_NO_SM2
24 # include "internal/sm2.h"
26 static RAND_METHOD fake_rand;
27 static const RAND_METHOD *saved_rand;
29 static uint8_t *fake_rand_bytes = NULL;
30 static size_t fake_rand_bytes_offset = 0;
32 static int get_faked_bytes(unsigned char *buf, int num)
36 if (fake_rand_bytes == NULL)
37 return saved_rand->bytes(buf, num);
39 for (i = 0; i != num; ++i)
40 buf[i] = fake_rand_bytes[fake_rand_bytes_offset + i];
41 fake_rand_bytes_offset += num;
45 static int start_fake_rand(const char *hex_bytes)
47 /* save old rand method */
48 if (!TEST_ptr(saved_rand = RAND_get_rand_method()))
51 fake_rand = *saved_rand;
52 /* use own random function */
53 fake_rand.bytes = get_faked_bytes;
55 fake_rand_bytes = OPENSSL_hexstr2buf(hex_bytes, NULL);
56 fake_rand_bytes_offset = 0;
58 /* set new RAND_METHOD */
59 if (!TEST_true(RAND_set_rand_method(&fake_rand)))
64 static int restore_rand(void)
66 OPENSSL_free(fake_rand_bytes);
67 fake_rand_bytes = NULL;
68 fake_rand_bytes_offset = 0;
69 if (!TEST_true(RAND_set_rand_method(saved_rand)))
74 static EC_GROUP *create_EC_group(const char *p_hex, const char *a_hex,
75 const char *b_hex, const char *x_hex,
76 const char *y_hex, const char *order_hex,
86 EC_POINT *generator = NULL;
87 EC_GROUP *group = NULL;
93 group = EC_GROUP_new_curve_GFp(p, a, b, NULL);
101 generator = EC_POINT_new(group);
102 if (generator == NULL)
105 BN_hex2bn(&g_x, x_hex);
106 BN_hex2bn(&g_y, y_hex);
108 if (EC_POINT_set_affine_coordinates_GFp(group, generator, g_x, g_y, NULL) ==
115 BN_hex2bn(&order, order_hex);
116 BN_hex2bn(&cof, cof_hex);
118 if (EC_GROUP_set_generator(group, generator, order, cof) == 0)
121 EC_POINT_free(generator);
128 static int test_sm2(const EC_GROUP *group,
129 const EVP_MD *digest,
130 const char *privkey_hex,
132 const char *k_hex, const char *ctext_hex)
134 const size_t msg_len = strlen(message);
139 unsigned char *expected = OPENSSL_hexstr2buf(ctext_hex, NULL);
141 size_t ctext_len = 0;
142 size_t ptext_len = 0;
143 uint8_t *ctext = NULL;
144 uint8_t *recovered = NULL;
145 size_t recovered_len = msg_len;
149 BN_hex2bn(&priv, privkey_hex);
152 EC_KEY_set_group(key, group);
153 EC_KEY_set_private_key(key, priv);
155 pt = EC_POINT_new(group);
156 EC_POINT_mul(group, pt, priv, NULL, NULL, NULL);
158 EC_KEY_set_public_key(key, pt);
162 ctext_len = SM2_ciphertext_size(key, digest, msg_len);
163 ctext = OPENSSL_zalloc(ctext_len);
167 start_fake_rand(k_hex);
168 rc = SM2_encrypt(key, digest,
169 (const uint8_t *)message, msg_len, ctext, &ctext_len);
172 TEST_mem_eq(ctext, ctext_len, expected, ctext_len);
176 ptext_len = SM2_plaintext_size(key, digest, ctext_len);
178 TEST_int_eq(ptext_len, msg_len);
180 recovered = OPENSSL_zalloc(ptext_len);
181 if (recovered == NULL)
183 rc = SM2_decrypt(key, digest, ctext, ctext_len, recovered, &recovered_len);
185 TEST_int_eq(recovered_len, msg_len);
186 TEST_mem_eq(recovered, recovered_len, message, msg_len);
194 OPENSSL_free(recovered);
195 OPENSSL_free(expected);
200 static int sm2_crypt_test(void)
203 EC_GROUP *test_group =
205 ("8542D69E4C044F18E8B92435BF6FF7DE457283915C45517D722EDB8B08F1DFC3",
206 "787968B4FA32C3FD2417842E73BBFEFF2F3C848B6831D7E0EC65228B3937E498",
207 "63E4C6D3B23B0C849CF84241484BFE48F61D59A5B16BA06E6E12D1DA27C5249A",
208 "421DEBD61B62EAB6746434EBC3CC315E32220B3BADD50BDC4C4E6C147FEDD43D",
209 "0680512BCBB42C07D47349D2153B70C4E5D7FDFCBFA36EA1A85841B9E46E09A2",
210 "8542D69E4C044F18E8B92435BF6FF7DD297720630485628D5AE74EE7C32E79B7",
213 if (test_group == NULL)
216 rc = test_sm2(test_group,
218 "1649AB77A00637BD5E2EFE283FBF353534AA7F7CB89463F208DDBC2920BB0DA0",
219 "encryption standard",
220 "004C62EEFD6ECFC2B95B92FD6C3D9575148AFA17425546D49018E5388D49DD7B4F",
221 "307B0220245C26FB68B1DDDDB12C4B6BF9F2B6D5FE60A383B0D18D1C4144ABF1"
222 "7F6252E7022076CB9264C2A7E88E52B19903FDC47378F605E36811F5C07423A2"
223 "4B84400F01B804209C3D7360C30156FAB7C80A0276712DA9D8094A634B766D3A"
224 "285E07480653426D0413650053A89B41C418B0C3AAD00D886C00286467");
229 /* Same test as above except using SHA-256 instead of SM3 */
230 rc = test_sm2(test_group,
232 "1649AB77A00637BD5E2EFE283FBF353534AA7F7CB89463F208DDBC2920BB0DA0",
233 "encryption standard",
234 "004C62EEFD6ECFC2B95B92FD6C3D9575148AFA17425546D49018E5388D49DD7B4F",
235 "307B0220245C26FB68B1DDDDB12C4B6BF9F2B6D5FE60A383B0D18D1C4144ABF17F6252E7022076CB9264C2A7E88E52B19903FDC47378F605E36811F5C07423A24B84400F01B80420BE89139D07853100EFA763F60CBE30099EA3DF7F8F364F9D10A5E988E3C5AAFC0413229E6C9AEE2BB92CAD649FE2C035689785DA33");
239 EC_GROUP_free(test_group);
246 int setup_tests(void)
248 #ifdef OPENSSL_NO_SM2
249 TEST_note("SM2 is disabled.");
251 ADD_TEST(sm2_crypt_test);