2 * Copyright 2017-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (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
11 * Low level APIs are deprecated for public use, but still ok for internal use.
13 #include "internal/deprecated.h"
19 #include <openssl/bio.h>
20 #include <openssl/evp.h>
21 #include <openssl/bn.h>
22 #include <openssl/crypto.h>
23 #include <openssl/err.h>
24 #include <openssl/rand.h>
27 #ifndef OPENSSL_NO_SM2
29 # include "crypto/sm2.h"
31 static OSSL_PROVIDER *fake_rand = NULL;
32 static uint8_t *fake_rand_bytes = NULL;
33 static size_t fake_rand_bytes_offset = 0;
34 static size_t fake_rand_size = 0;
36 static int get_faked_bytes(unsigned char *buf, size_t num)
38 if (!TEST_ptr(fake_rand_bytes) || !TEST_size_t_gt(fake_rand_size, 0))
42 if (fake_rand_bytes_offset >= fake_rand_size)
43 fake_rand_bytes_offset = 0;
44 *buf++ = fake_rand_bytes[fake_rand_bytes_offset++];
50 static int start_fake_rand(const char *hex_bytes)
52 OPENSSL_free(fake_rand_bytes);
53 fake_rand_bytes_offset = 0;
54 fake_rand_size = strlen(hex_bytes) / 2;
55 if (!TEST_ptr(fake_rand_bytes = OPENSSL_hexstr2buf(hex_bytes, NULL)))
58 /* use own random function */
59 fake_rand_set_callback(get_faked_bytes);
64 static void restore_rand(void)
66 fake_rand_set_callback(NULL);
67 OPENSSL_free(fake_rand_bytes);
68 fake_rand_bytes = NULL;
69 fake_rand_bytes_offset = 0;
72 static EC_GROUP *create_EC_group(const char *p_hex, const char *a_hex,
73 const char *b_hex, const char *x_hex,
74 const char *y_hex, const char *order_hex,
84 EC_POINT *generator = NULL;
85 EC_GROUP *group = NULL;
88 if (!TEST_true(BN_hex2bn(&p, p_hex))
89 || !TEST_true(BN_hex2bn(&a, a_hex))
90 || !TEST_true(BN_hex2bn(&b, b_hex)))
93 group = EC_GROUP_new_curve_GFp(p, a, b, NULL);
97 generator = EC_POINT_new(group);
98 if (!TEST_ptr(generator))
101 if (!TEST_true(BN_hex2bn(&g_x, x_hex))
102 || !TEST_true(BN_hex2bn(&g_y, y_hex))
103 || !TEST_true(EC_POINT_set_affine_coordinates(group, generator, g_x,
107 if (!TEST_true(BN_hex2bn(&order, order_hex))
108 || !TEST_true(BN_hex2bn(&cof, cof_hex))
109 || !TEST_true(EC_GROUP_set_generator(group, generator, order, cof)))
119 EC_POINT_free(generator);
123 EC_GROUP_free(group);
130 static int test_sm2_crypt(const EC_GROUP *group,
131 const EVP_MD *digest,
132 const char *privkey_hex,
134 const char *k_hex, const char *ctext_hex)
136 const size_t msg_len = strlen(message);
140 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;
148 if (!TEST_ptr(expected)
149 || !TEST_true(BN_hex2bn(&priv, privkey_hex)))
154 || !TEST_true(EC_KEY_set_group(key, group))
155 || !TEST_true(EC_KEY_set_private_key(key, priv)))
158 pt = EC_POINT_new(group);
160 || !TEST_true(EC_POINT_mul(group, pt, priv, NULL, NULL, NULL))
161 || !TEST_true(EC_KEY_set_public_key(key, pt))
162 || !TEST_true(sm2_ciphertext_size(key, digest, msg_len, &ctext_len)))
165 ctext = OPENSSL_zalloc(ctext_len);
166 if (!TEST_ptr(ctext))
169 start_fake_rand(k_hex);
170 if (!TEST_true(sm2_encrypt(key, digest, (const uint8_t *)message, msg_len,
171 ctext, &ctext_len))) {
177 if (!TEST_mem_eq(ctext, ctext_len, expected, ctext_len))
180 if (!TEST_true(sm2_plaintext_size(key, digest, ctext_len, &ptext_len))
181 || !TEST_int_eq(ptext_len, msg_len))
184 recovered = OPENSSL_zalloc(ptext_len);
185 if (!TEST_ptr(recovered)
186 || !TEST_true(sm2_decrypt(key, digest, ctext, ctext_len, recovered, &recovered_len))
187 || !TEST_int_eq(recovered_len, msg_len)
188 || !TEST_mem_eq(recovered, recovered_len, message, msg_len))
196 OPENSSL_free(recovered);
197 OPENSSL_free(expected);
202 static int sm2_crypt_test(void)
205 EC_GROUP *test_group =
207 ("8542D69E4C044F18E8B92435BF6FF7DE457283915C45517D722EDB8B08F1DFC3",
208 "787968B4FA32C3FD2417842E73BBFEFF2F3C848B6831D7E0EC65228B3937E498",
209 "63E4C6D3B23B0C849CF84241484BFE48F61D59A5B16BA06E6E12D1DA27C5249A",
210 "421DEBD61B62EAB6746434EBC3CC315E32220B3BADD50BDC4C4E6C147FEDD43D",
211 "0680512BCBB42C07D47349D2153B70C4E5D7FDFCBFA36EA1A85841B9E46E09A2",
212 "8542D69E4C044F18E8B92435BF6FF7DD297720630485628D5AE74EE7C32E79B7",
215 if (!TEST_ptr(test_group))
221 "1649AB77A00637BD5E2EFE283FBF353534AA7F7CB89463F208DDBC2920BB0DA0",
222 "encryption standard",
223 "004C62EEFD6ECFC2B95B92FD6C3D9575148AFA17425546D49018E5388D49DD7B4F"
224 "0092e8ff62146873c258557548500ab2df2a365e0609ab67640a1f6d57d7b17820"
225 "008349312695a3e1d2f46905f39a766487f2432e95d6be0cb009fe8c69fd8825a7",
226 "307B0220245C26FB68B1DDDDB12C4B6BF9F2B6D5FE60A383B0D18D1C4144ABF1"
227 "7F6252E7022076CB9264C2A7E88E52B19903FDC47378F605E36811F5C07423A2"
228 "4B84400F01B804209C3D7360C30156FAB7C80A0276712DA9D8094A634B766D3A"
229 "285E07480653426D0413650053A89B41C418B0C3AAD00D886C00286467"))
232 /* Same test as above except using SHA-256 instead of SM3 */
236 "1649AB77A00637BD5E2EFE283FBF353534AA7F7CB89463F208DDBC2920BB0DA0",
237 "encryption standard",
238 "004C62EEFD6ECFC2B95B92FD6C3D9575148AFA17425546D49018E5388D49DD7B4F"
239 "003da18008784352192d70f22c26c243174a447ba272fec64163dd4742bae8bc98"
240 "00df17605cf304e9dd1dfeb90c015e93b393a6f046792f790a6fa4228af67d9588",
241 "307B0220245C26FB68B1DDDDB12C4B6BF9F2B6D5FE60A383B0D18D1C4144ABF17F"
242 "6252E7022076CB9264C2A7E88E52B19903FDC47378F605E36811F5C07423A24B84"
243 "400F01B80420BE89139D07853100EFA763F60CBE30099EA3DF7F8F364F9D10A5E9"
244 "88E3C5AAFC0413229E6C9AEE2BB92CAD649FE2C035689785DA33"))
249 EC_GROUP_free(test_group);
254 static int test_sm2_sign(const EC_GROUP *group,
256 const char *privkey_hex,
262 const size_t msg_len = strlen(message);
267 ECDSA_SIG *sig = NULL;
268 const BIGNUM *sig_r = NULL;
269 const BIGNUM *sig_s = NULL;
273 if (!TEST_true(BN_hex2bn(&priv, privkey_hex)))
278 || !TEST_true(EC_KEY_set_group(key, group))
279 || !TEST_true(EC_KEY_set_private_key(key, priv)))
282 pt = EC_POINT_new(group);
284 || !TEST_true(EC_POINT_mul(group, pt, priv, NULL, NULL, NULL))
285 || !TEST_true(EC_KEY_set_public_key(key, pt)))
288 start_fake_rand(k_hex);
289 sig = sm2_do_sign(key, EVP_sm3(), (const uint8_t *)userid, strlen(userid),
290 (const uint8_t *)message, msg_len);
291 if (!TEST_ptr(sig)) {
297 ECDSA_SIG_get0(sig, &sig_r, &sig_s);
299 if (!TEST_true(BN_hex2bn(&r, r_hex))
300 || !TEST_true(BN_hex2bn(&s, s_hex))
301 || !TEST_BN_eq(r, sig_r)
302 || !TEST_BN_eq(s, sig_s))
305 ok = sm2_do_verify(key, EVP_sm3(), sig, (const uint8_t *)userid,
306 strlen(userid), (const uint8_t *)message, msg_len);
308 /* We goto done whether this passes or fails */
322 static int sm2_sig_test(void)
325 /* From draft-shen-sm2-ecdsa-02 */
326 EC_GROUP *test_group =
328 ("8542D69E4C044F18E8B92435BF6FF7DE457283915C45517D722EDB8B08F1DFC3",
329 "787968B4FA32C3FD2417842E73BBFEFF2F3C848B6831D7E0EC65228B3937E498",
330 "63E4C6D3B23B0C849CF84241484BFE48F61D59A5B16BA06E6E12D1DA27C5249A",
331 "421DEBD61B62EAB6746434EBC3CC315E32220B3BADD50BDC4C4E6C147FEDD43D",
332 "0680512BCBB42C07D47349D2153B70C4E5D7FDFCBFA36EA1A85841B9E46E09A2",
333 "8542D69E4C044F18E8B92435BF6FF7DD297720630485628D5AE74EE7C32E79B7",
336 if (!TEST_ptr(test_group))
339 if (!TEST_true(test_sm2_sign(
341 "ALICE123@YAHOO.COM",
342 "128B2FA8BD433C6C068C8D803DFF79792A519A55171B1B650C23661D15897263",
344 "006CB28D99385C175C94F94E934817663FC176D925DD72B727260DBAAE1FB2F96F"
345 "007c47811054c6f99613a578eb8453706ccb96384fe7df5c171671e760bfa8be3a",
346 "40F1EC59F793D9F49E09DCEF49130D4194F79FB1EED2CAA55BACDB49C4E755D1",
347 "6FC6DAC32C5D5CF10C77DFB20F7C2EB667A457872FB09EC56327A67EC7DEEBE7")))
353 EC_GROUP_free(test_group);
360 int setup_tests(void)
362 #ifdef OPENSSL_NO_SM2
363 TEST_note("SM2 is disabled.");
365 fake_rand = fake_rand_start(NULL);
366 if (fake_rand == NULL)
369 ADD_TEST(sm2_crypt_test);
370 ADD_TEST(sm2_sig_test);
375 void cleanup_tests(void)
377 #ifdef OPENSSL_NO_SM2
378 fake_rand_finish(fake_rand);