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e14d6cf6 MC |
1 | /* |
2 | * Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved. | |
3 | * | |
909f1a2e | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
e14d6cf6 MC |
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 | |
8 | */ | |
9 | ||
579422c8 P |
10 | /* |
11 | * Low level APIs are deprecated for public use, but still ok for internal use. | |
12 | */ | |
13 | #include "internal/deprecated.h" | |
14 | ||
e14d6cf6 MC |
15 | #include <stdio.h> |
16 | #include <stdlib.h> | |
17 | #include <string.h> | |
18 | ||
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> | |
25 | #include "testutil.h" | |
26 | ||
27 | #ifndef OPENSSL_NO_SM2 | |
28 | ||
25f2138b | 29 | # include "crypto/sm2.h" |
e14d6cf6 MC |
30 | |
31 | static RAND_METHOD fake_rand; | |
32 | static const RAND_METHOD *saved_rand; | |
33 | ||
34 | static uint8_t *fake_rand_bytes = NULL; | |
35 | static size_t fake_rand_bytes_offset = 0; | |
f73164ca | 36 | static size_t fake_rand_size = 0; |
e14d6cf6 MC |
37 | |
38 | static int get_faked_bytes(unsigned char *buf, int num) | |
39 | { | |
40 | int i; | |
41 | ||
42 | if (fake_rand_bytes == NULL) | |
43 | return saved_rand->bytes(buf, num); | |
44 | ||
f73164ca BE |
45 | if (!TEST_size_t_le(fake_rand_bytes_offset + num, fake_rand_size)) |
46 | return 0; | |
47 | ||
e14d6cf6 MC |
48 | for (i = 0; i != num; ++i) |
49 | buf[i] = fake_rand_bytes[fake_rand_bytes_offset + i]; | |
50 | fake_rand_bytes_offset += num; | |
51 | return 1; | |
52 | } | |
53 | ||
54 | static int start_fake_rand(const char *hex_bytes) | |
55 | { | |
56 | /* save old rand method */ | |
57 | if (!TEST_ptr(saved_rand = RAND_get_rand_method())) | |
58 | return 0; | |
59 | ||
60 | fake_rand = *saved_rand; | |
61 | /* use own random function */ | |
62 | fake_rand.bytes = get_faked_bytes; | |
63 | ||
64 | fake_rand_bytes = OPENSSL_hexstr2buf(hex_bytes, NULL); | |
65 | fake_rand_bytes_offset = 0; | |
f73164ca | 66 | fake_rand_size = strlen(hex_bytes) / 2; |
e14d6cf6 MC |
67 | |
68 | /* set new RAND_METHOD */ | |
69 | if (!TEST_true(RAND_set_rand_method(&fake_rand))) | |
70 | return 0; | |
71 | return 1; | |
72 | } | |
73 | ||
74 | static int restore_rand(void) | |
75 | { | |
76 | OPENSSL_free(fake_rand_bytes); | |
77 | fake_rand_bytes = NULL; | |
78 | fake_rand_bytes_offset = 0; | |
79 | if (!TEST_true(RAND_set_rand_method(saved_rand))) | |
80 | return 0; | |
81 | return 1; | |
82 | } | |
83 | ||
84 | static EC_GROUP *create_EC_group(const char *p_hex, const char *a_hex, | |
85 | const char *b_hex, const char *x_hex, | |
86 | const char *y_hex, const char *order_hex, | |
87 | const char *cof_hex) | |
88 | { | |
89 | BIGNUM *p = NULL; | |
90 | BIGNUM *a = NULL; | |
91 | BIGNUM *b = NULL; | |
92 | BIGNUM *g_x = NULL; | |
93 | BIGNUM *g_y = NULL; | |
94 | BIGNUM *order = NULL; | |
95 | BIGNUM *cof = NULL; | |
96 | EC_POINT *generator = NULL; | |
97 | EC_GROUP *group = NULL; | |
98 | int ok = 0; | |
99 | ||
100 | if (!TEST_true(BN_hex2bn(&p, p_hex)) | |
101 | || !TEST_true(BN_hex2bn(&a, a_hex)) | |
102 | || !TEST_true(BN_hex2bn(&b, b_hex))) | |
103 | goto done; | |
104 | ||
105 | group = EC_GROUP_new_curve_GFp(p, a, b, NULL); | |
106 | if (!TEST_ptr(group)) | |
107 | goto done; | |
108 | ||
109 | generator = EC_POINT_new(group); | |
110 | if (!TEST_ptr(generator)) | |
111 | goto done; | |
112 | ||
113 | if (!TEST_true(BN_hex2bn(&g_x, x_hex)) | |
114 | || !TEST_true(BN_hex2bn(&g_y, y_hex)) | |
9cc570d4 MC |
115 | || !TEST_true(EC_POINT_set_affine_coordinates(group, generator, g_x, |
116 | g_y, NULL))) | |
e14d6cf6 MC |
117 | goto done; |
118 | ||
119 | if (!TEST_true(BN_hex2bn(&order, order_hex)) | |
120 | || !TEST_true(BN_hex2bn(&cof, cof_hex)) | |
121 | || !TEST_true(EC_GROUP_set_generator(group, generator, order, cof))) | |
122 | goto done; | |
123 | ||
124 | ok = 1; | |
125 | done: | |
126 | BN_free(p); | |
127 | BN_free(a); | |
128 | BN_free(b); | |
129 | BN_free(g_x); | |
130 | BN_free(g_y); | |
131 | EC_POINT_free(generator); | |
132 | BN_free(order); | |
133 | BN_free(cof); | |
134 | if (!ok) { | |
135 | EC_GROUP_free(group); | |
136 | group = NULL; | |
137 | } | |
138 | ||
139 | return group; | |
140 | } | |
141 | ||
142 | static int test_sm2_crypt(const EC_GROUP *group, | |
143 | const EVP_MD *digest, | |
144 | const char *privkey_hex, | |
145 | const char *message, | |
146 | const char *k_hex, const char *ctext_hex) | |
147 | { | |
148 | const size_t msg_len = strlen(message); | |
149 | BIGNUM *priv = NULL; | |
150 | EC_KEY *key = NULL; | |
151 | EC_POINT *pt = NULL; | |
152 | unsigned char *expected = OPENSSL_hexstr2buf(ctext_hex, NULL); | |
153 | size_t ctext_len = 0; | |
154 | size_t ptext_len = 0; | |
155 | uint8_t *ctext = NULL; | |
156 | uint8_t *recovered = NULL; | |
157 | size_t recovered_len = msg_len; | |
158 | int rc = 0; | |
159 | ||
160 | if (!TEST_ptr(expected) | |
161 | || !TEST_true(BN_hex2bn(&priv, privkey_hex))) | |
162 | goto done; | |
163 | ||
164 | key = EC_KEY_new(); | |
165 | if (!TEST_ptr(key) | |
166 | || !TEST_true(EC_KEY_set_group(key, group)) | |
167 | || !TEST_true(EC_KEY_set_private_key(key, priv))) | |
168 | goto done; | |
169 | ||
170 | pt = EC_POINT_new(group); | |
171 | if (!TEST_ptr(pt) | |
172 | || !TEST_true(EC_POINT_mul(group, pt, priv, NULL, NULL, NULL)) | |
173 | || !TEST_true(EC_KEY_set_public_key(key, pt)) | |
2167239a | 174 | || !TEST_true(sm2_ciphertext_size(key, digest, msg_len, &ctext_len))) |
e14d6cf6 MC |
175 | goto done; |
176 | ||
177 | ctext = OPENSSL_zalloc(ctext_len); | |
178 | if (!TEST_ptr(ctext)) | |
179 | goto done; | |
180 | ||
181 | start_fake_rand(k_hex); | |
2167239a | 182 | if (!TEST_true(sm2_encrypt(key, digest, (const uint8_t *)message, msg_len, |
f73164ca BE |
183 | ctext, &ctext_len)) |
184 | || !TEST_size_t_eq(fake_rand_bytes_offset, fake_rand_size)) { | |
e14d6cf6 MC |
185 | restore_rand(); |
186 | goto done; | |
187 | } | |
188 | restore_rand(); | |
189 | ||
190 | if (!TEST_mem_eq(ctext, ctext_len, expected, ctext_len)) | |
191 | goto done; | |
192 | ||
2167239a | 193 | if (!TEST_true(sm2_plaintext_size(key, digest, ctext_len, &ptext_len)) |
e14d6cf6 MC |
194 | || !TEST_int_eq(ptext_len, msg_len)) |
195 | goto done; | |
196 | ||
197 | recovered = OPENSSL_zalloc(ptext_len); | |
198 | if (!TEST_ptr(recovered) | |
2167239a | 199 | || !TEST_true(sm2_decrypt(key, digest, ctext, ctext_len, recovered, &recovered_len)) |
e14d6cf6 MC |
200 | || !TEST_int_eq(recovered_len, msg_len) |
201 | || !TEST_mem_eq(recovered, recovered_len, message, msg_len)) | |
202 | goto done; | |
203 | ||
204 | rc = 1; | |
205 | done: | |
206 | BN_free(priv); | |
207 | EC_POINT_free(pt); | |
208 | OPENSSL_free(ctext); | |
209 | OPENSSL_free(recovered); | |
210 | OPENSSL_free(expected); | |
211 | EC_KEY_free(key); | |
212 | return rc; | |
213 | } | |
214 | ||
215 | static int sm2_crypt_test(void) | |
216 | { | |
09fb65d5 | 217 | int testresult = 0; |
e14d6cf6 MC |
218 | EC_GROUP *test_group = |
219 | create_EC_group | |
220 | ("8542D69E4C044F18E8B92435BF6FF7DE457283915C45517D722EDB8B08F1DFC3", | |
221 | "787968B4FA32C3FD2417842E73BBFEFF2F3C848B6831D7E0EC65228B3937E498", | |
222 | "63E4C6D3B23B0C849CF84241484BFE48F61D59A5B16BA06E6E12D1DA27C5249A", | |
223 | "421DEBD61B62EAB6746434EBC3CC315E32220B3BADD50BDC4C4E6C147FEDD43D", | |
224 | "0680512BCBB42C07D47349D2153B70C4E5D7FDFCBFA36EA1A85841B9E46E09A2", | |
225 | "8542D69E4C044F18E8B92435BF6FF7DD297720630485628D5AE74EE7C32E79B7", | |
226 | "1"); | |
227 | ||
228 | if (!TEST_ptr(test_group)) | |
229 | goto done; | |
230 | ||
231 | if (!test_sm2_crypt( | |
232 | test_group, | |
233 | EVP_sm3(), | |
234 | "1649AB77A00637BD5E2EFE283FBF353534AA7F7CB89463F208DDBC2920BB0DA0", | |
235 | "encryption standard", | |
f73164ca BE |
236 | "004C62EEFD6ECFC2B95B92FD6C3D9575148AFA17425546D49018E5388D49DD7B4F" |
237 | "0092e8ff62146873c258557548500ab2df2a365e0609ab67640a1f6d57d7b17820" | |
238 | "008349312695a3e1d2f46905f39a766487f2432e95d6be0cb009fe8c69fd8825a7", | |
e14d6cf6 MC |
239 | "307B0220245C26FB68B1DDDDB12C4B6BF9F2B6D5FE60A383B0D18D1C4144ABF1" |
240 | "7F6252E7022076CB9264C2A7E88E52B19903FDC47378F605E36811F5C07423A2" | |
241 | "4B84400F01B804209C3D7360C30156FAB7C80A0276712DA9D8094A634B766D3A" | |
242 | "285E07480653426D0413650053A89B41C418B0C3AAD00D886C00286467")) | |
243 | goto done; | |
244 | ||
245 | /* Same test as above except using SHA-256 instead of SM3 */ | |
246 | if (!test_sm2_crypt( | |
247 | test_group, | |
248 | EVP_sha256(), | |
249 | "1649AB77A00637BD5E2EFE283FBF353534AA7F7CB89463F208DDBC2920BB0DA0", | |
250 | "encryption standard", | |
f73164ca BE |
251 | "004C62EEFD6ECFC2B95B92FD6C3D9575148AFA17425546D49018E5388D49DD7B4F" |
252 | "003da18008784352192d70f22c26c243174a447ba272fec64163dd4742bae8bc98" | |
253 | "00df17605cf304e9dd1dfeb90c015e93b393a6f046792f790a6fa4228af67d9588", | |
e14d6cf6 MC |
254 | "307B0220245C26FB68B1DDDDB12C4B6BF9F2B6D5FE60A383B0D18D1C4144ABF17F" |
255 | "6252E7022076CB9264C2A7E88E52B19903FDC47378F605E36811F5C07423A24B84" | |
256 | "400F01B80420BE89139D07853100EFA763F60CBE30099EA3DF7F8F364F9D10A5E9" | |
257 | "88E3C5AAFC0413229E6C9AEE2BB92CAD649FE2C035689785DA33")) | |
258 | goto done; | |
259 | ||
260 | testresult = 1; | |
261 | done: | |
262 | EC_GROUP_free(test_group); | |
263 | ||
264 | return testresult; | |
265 | } | |
266 | ||
267 | static int test_sm2_sign(const EC_GROUP *group, | |
268 | const char *userid, | |
269 | const char *privkey_hex, | |
270 | const char *message, | |
271 | const char *k_hex, | |
272 | const char *r_hex, | |
273 | const char *s_hex) | |
274 | { | |
275 | const size_t msg_len = strlen(message); | |
276 | int ok = 0; | |
277 | BIGNUM *priv = NULL; | |
278 | EC_POINT *pt = NULL; | |
279 | EC_KEY *key = NULL; | |
280 | ECDSA_SIG *sig = NULL; | |
281 | const BIGNUM *sig_r = NULL; | |
282 | const BIGNUM *sig_s = NULL; | |
283 | BIGNUM *r = NULL; | |
284 | BIGNUM *s = NULL; | |
285 | ||
286 | if (!TEST_true(BN_hex2bn(&priv, privkey_hex))) | |
287 | goto done; | |
288 | ||
289 | key = EC_KEY_new(); | |
290 | if (!TEST_ptr(key) | |
291 | || !TEST_true(EC_KEY_set_group(key, group)) | |
292 | || !TEST_true(EC_KEY_set_private_key(key, priv))) | |
293 | goto done; | |
294 | ||
295 | pt = EC_POINT_new(group); | |
296 | if (!TEST_ptr(pt) | |
297 | || !TEST_true(EC_POINT_mul(group, pt, priv, NULL, NULL, NULL)) | |
298 | || !TEST_true(EC_KEY_set_public_key(key, pt))) | |
299 | goto done; | |
300 | ||
301 | start_fake_rand(k_hex); | |
00433bad PY |
302 | sig = sm2_do_sign(key, EVP_sm3(), (const uint8_t *)userid, strlen(userid), |
303 | (const uint8_t *)message, msg_len); | |
f73164ca BE |
304 | if (!TEST_ptr(sig) |
305 | || !TEST_size_t_eq(fake_rand_bytes_offset, fake_rand_size)) { | |
306 | restore_rand(); | |
e14d6cf6 | 307 | goto done; |
f73164ca BE |
308 | } |
309 | restore_rand(); | |
e14d6cf6 MC |
310 | |
311 | ECDSA_SIG_get0(sig, &sig_r, &sig_s); | |
312 | ||
313 | if (!TEST_true(BN_hex2bn(&r, r_hex)) | |
314 | || !TEST_true(BN_hex2bn(&s, s_hex)) | |
315 | || !TEST_BN_eq(r, sig_r) | |
316 | || !TEST_BN_eq(s, sig_s)) | |
317 | goto done; | |
318 | ||
00433bad PY |
319 | ok = sm2_do_verify(key, EVP_sm3(), sig, (const uint8_t *)userid, |
320 | strlen(userid), (const uint8_t *)message, msg_len); | |
e14d6cf6 MC |
321 | |
322 | /* We goto done whether this passes or fails */ | |
323 | TEST_true(ok); | |
324 | ||
325 | done: | |
326 | ECDSA_SIG_free(sig); | |
327 | EC_POINT_free(pt); | |
328 | EC_KEY_free(key); | |
329 | BN_free(priv); | |
330 | BN_free(r); | |
331 | BN_free(s); | |
332 | ||
333 | return ok; | |
334 | } | |
335 | ||
336 | static int sm2_sig_test(void) | |
337 | { | |
338 | int testresult = 0; | |
339 | /* From draft-shen-sm2-ecdsa-02 */ | |
340 | EC_GROUP *test_group = | |
341 | create_EC_group | |
342 | ("8542D69E4C044F18E8B92435BF6FF7DE457283915C45517D722EDB8B08F1DFC3", | |
343 | "787968B4FA32C3FD2417842E73BBFEFF2F3C848B6831D7E0EC65228B3937E498", | |
344 | "63E4C6D3B23B0C849CF84241484BFE48F61D59A5B16BA06E6E12D1DA27C5249A", | |
345 | "421DEBD61B62EAB6746434EBC3CC315E32220B3BADD50BDC4C4E6C147FEDD43D", | |
346 | "0680512BCBB42C07D47349D2153B70C4E5D7FDFCBFA36EA1A85841B9E46E09A2", | |
347 | "8542D69E4C044F18E8B92435BF6FF7DD297720630485628D5AE74EE7C32E79B7", | |
348 | "1"); | |
349 | ||
350 | if (!TEST_ptr(test_group)) | |
351 | goto done; | |
352 | ||
353 | if (!TEST_true(test_sm2_sign( | |
354 | test_group, | |
355 | "ALICE123@YAHOO.COM", | |
356 | "128B2FA8BD433C6C068C8D803DFF79792A519A55171B1B650C23661D15897263", | |
357 | "message digest", | |
f73164ca BE |
358 | "006CB28D99385C175C94F94E934817663FC176D925DD72B727260DBAAE1FB2F96F" |
359 | "007c47811054c6f99613a578eb8453706ccb96384fe7df5c171671e760bfa8be3a", | |
e14d6cf6 MC |
360 | "40F1EC59F793D9F49E09DCEF49130D4194F79FB1EED2CAA55BACDB49C4E755D1", |
361 | "6FC6DAC32C5D5CF10C77DFB20F7C2EB667A457872FB09EC56327A67EC7DEEBE7"))) | |
362 | goto done; | |
363 | ||
364 | testresult = 1; | |
365 | ||
366 | done: | |
367 | EC_GROUP_free(test_group); | |
368 | ||
369 | return testresult; | |
370 | } | |
371 | ||
372 | #endif | |
373 | ||
374 | int setup_tests(void) | |
375 | { | |
376 | #ifdef OPENSSL_NO_SM2 | |
377 | TEST_note("SM2 is disabled."); | |
378 | #else | |
379 | ADD_TEST(sm2_crypt_test); | |
380 | ADD_TEST(sm2_sig_test); | |
381 | #endif | |
382 | return 1; | |
383 | } |