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e14d6cf6 | 1 | /* |
8020d79b | 2 | * Copyright 2017-2021 The OpenSSL Project Authors. All Rights Reserved. |
e14d6cf6 | 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 | 30 | |
fccdb61a P |
31 | static fake_random_generate_cb get_faked_bytes; |
32 | ||
332a245c | 33 | static OSSL_PROVIDER *fake_rand = NULL; |
e14d6cf6 MC |
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 | 37 | |
fccdb61a P |
38 | static int get_faked_bytes(unsigned char *buf, size_t num, |
39 | ossl_unused const char *name, | |
40 | ossl_unused EVP_RAND_CTX *ctx) | |
e14d6cf6 | 41 | { |
332a245c | 42 | if (!TEST_ptr(fake_rand_bytes) || !TEST_size_t_gt(fake_rand_size, 0)) |
f73164ca BE |
43 | return 0; |
44 | ||
09736245 BB |
45 | while (num-- > 0) { |
46 | if (fake_rand_bytes_offset >= fake_rand_size) | |
47 | fake_rand_bytes_offset = 0; | |
48 | *buf++ = fake_rand_bytes[fake_rand_bytes_offset++]; | |
49 | } | |
50 | ||
e14d6cf6 MC |
51 | return 1; |
52 | } | |
53 | ||
54 | static int start_fake_rand(const char *hex_bytes) | |
55 | { | |
332a245c | 56 | OPENSSL_free(fake_rand_bytes); |
e14d6cf6 | 57 | fake_rand_bytes_offset = 0; |
f73164ca | 58 | fake_rand_size = strlen(hex_bytes) / 2; |
332a245c | 59 | if (!TEST_ptr(fake_rand_bytes = OPENSSL_hexstr2buf(hex_bytes, NULL))) |
e14d6cf6 | 60 | return 0; |
332a245c P |
61 | |
62 | /* use own random function */ | |
e1f94663 | 63 | fake_rand_set_public_private_callbacks(NULL, get_faked_bytes); |
e14d6cf6 | 64 | return 1; |
332a245c | 65 | |
e14d6cf6 MC |
66 | } |
67 | ||
332a245c | 68 | static void restore_rand(void) |
e14d6cf6 | 69 | { |
e1f94663 | 70 | fake_rand_set_public_private_callbacks(NULL, NULL); |
e14d6cf6 MC |
71 | OPENSSL_free(fake_rand_bytes); |
72 | fake_rand_bytes = NULL; | |
73 | fake_rand_bytes_offset = 0; | |
e14d6cf6 MC |
74 | } |
75 | ||
76 | static EC_GROUP *create_EC_group(const char *p_hex, const char *a_hex, | |
77 | const char *b_hex, const char *x_hex, | |
78 | const char *y_hex, const char *order_hex, | |
79 | const char *cof_hex) | |
80 | { | |
81 | BIGNUM *p = NULL; | |
82 | BIGNUM *a = NULL; | |
83 | BIGNUM *b = NULL; | |
84 | BIGNUM *g_x = NULL; | |
85 | BIGNUM *g_y = NULL; | |
86 | BIGNUM *order = NULL; | |
87 | BIGNUM *cof = NULL; | |
88 | EC_POINT *generator = NULL; | |
89 | EC_GROUP *group = NULL; | |
90 | int ok = 0; | |
91 | ||
92 | if (!TEST_true(BN_hex2bn(&p, p_hex)) | |
93 | || !TEST_true(BN_hex2bn(&a, a_hex)) | |
94 | || !TEST_true(BN_hex2bn(&b, b_hex))) | |
95 | goto done; | |
96 | ||
97 | group = EC_GROUP_new_curve_GFp(p, a, b, NULL); | |
98 | if (!TEST_ptr(group)) | |
99 | goto done; | |
100 | ||
101 | generator = EC_POINT_new(group); | |
102 | if (!TEST_ptr(generator)) | |
103 | goto done; | |
104 | ||
105 | if (!TEST_true(BN_hex2bn(&g_x, x_hex)) | |
106 | || !TEST_true(BN_hex2bn(&g_y, y_hex)) | |
9cc570d4 MC |
107 | || !TEST_true(EC_POINT_set_affine_coordinates(group, generator, g_x, |
108 | g_y, NULL))) | |
e14d6cf6 MC |
109 | goto done; |
110 | ||
111 | if (!TEST_true(BN_hex2bn(&order, order_hex)) | |
112 | || !TEST_true(BN_hex2bn(&cof, cof_hex)) | |
113 | || !TEST_true(EC_GROUP_set_generator(group, generator, order, cof))) | |
114 | goto done; | |
115 | ||
116 | ok = 1; | |
117 | done: | |
118 | BN_free(p); | |
119 | BN_free(a); | |
120 | BN_free(b); | |
121 | BN_free(g_x); | |
122 | BN_free(g_y); | |
123 | EC_POINT_free(generator); | |
124 | BN_free(order); | |
125 | BN_free(cof); | |
126 | if (!ok) { | |
127 | EC_GROUP_free(group); | |
128 | group = NULL; | |
129 | } | |
130 | ||
131 | return group; | |
132 | } | |
133 | ||
134 | static int test_sm2_crypt(const EC_GROUP *group, | |
135 | const EVP_MD *digest, | |
136 | const char *privkey_hex, | |
137 | const char *message, | |
138 | const char *k_hex, const char *ctext_hex) | |
139 | { | |
140 | const size_t msg_len = strlen(message); | |
141 | BIGNUM *priv = NULL; | |
142 | EC_KEY *key = NULL; | |
143 | EC_POINT *pt = NULL; | |
144 | unsigned char *expected = OPENSSL_hexstr2buf(ctext_hex, NULL); | |
145 | size_t ctext_len = 0; | |
146 | size_t ptext_len = 0; | |
147 | uint8_t *ctext = NULL; | |
148 | uint8_t *recovered = NULL; | |
149 | size_t recovered_len = msg_len; | |
150 | int rc = 0; | |
151 | ||
152 | if (!TEST_ptr(expected) | |
153 | || !TEST_true(BN_hex2bn(&priv, privkey_hex))) | |
154 | goto done; | |
155 | ||
156 | key = EC_KEY_new(); | |
157 | if (!TEST_ptr(key) | |
158 | || !TEST_true(EC_KEY_set_group(key, group)) | |
159 | || !TEST_true(EC_KEY_set_private_key(key, priv))) | |
160 | goto done; | |
161 | ||
162 | pt = EC_POINT_new(group); | |
163 | if (!TEST_ptr(pt) | |
164 | || !TEST_true(EC_POINT_mul(group, pt, priv, NULL, NULL, NULL)) | |
165 | || !TEST_true(EC_KEY_set_public_key(key, pt)) | |
32ab57cb SL |
166 | || !TEST_true(ossl_sm2_ciphertext_size(key, digest, msg_len, |
167 | &ctext_len))) | |
e14d6cf6 MC |
168 | goto done; |
169 | ||
170 | ctext = OPENSSL_zalloc(ctext_len); | |
171 | if (!TEST_ptr(ctext)) | |
172 | goto done; | |
173 | ||
174 | start_fake_rand(k_hex); | |
32ab57cb SL |
175 | if (!TEST_true(ossl_sm2_encrypt(key, digest, |
176 | (const uint8_t *)message, msg_len, | |
177 | ctext, &ctext_len))) { | |
e14d6cf6 MC |
178 | restore_rand(); |
179 | goto done; | |
180 | } | |
181 | restore_rand(); | |
182 | ||
183 | if (!TEST_mem_eq(ctext, ctext_len, expected, ctext_len)) | |
184 | goto done; | |
185 | ||
32ab57cb | 186 | if (!TEST_true(ossl_sm2_plaintext_size(key, digest, ctext_len, &ptext_len)) |
e14d6cf6 MC |
187 | || !TEST_int_eq(ptext_len, msg_len)) |
188 | goto done; | |
189 | ||
190 | recovered = OPENSSL_zalloc(ptext_len); | |
191 | if (!TEST_ptr(recovered) | |
32ab57cb SL |
192 | || !TEST_true(ossl_sm2_decrypt(key, digest, ctext, ctext_len, |
193 | recovered, &recovered_len)) | |
e14d6cf6 MC |
194 | || !TEST_int_eq(recovered_len, msg_len) |
195 | || !TEST_mem_eq(recovered, recovered_len, message, msg_len)) | |
196 | goto done; | |
197 | ||
198 | rc = 1; | |
199 | done: | |
200 | BN_free(priv); | |
201 | EC_POINT_free(pt); | |
202 | OPENSSL_free(ctext); | |
203 | OPENSSL_free(recovered); | |
204 | OPENSSL_free(expected); | |
205 | EC_KEY_free(key); | |
206 | return rc; | |
207 | } | |
208 | ||
209 | static int sm2_crypt_test(void) | |
210 | { | |
09fb65d5 | 211 | int testresult = 0; |
e14d6cf6 MC |
212 | EC_GROUP *test_group = |
213 | create_EC_group | |
214 | ("8542D69E4C044F18E8B92435BF6FF7DE457283915C45517D722EDB8B08F1DFC3", | |
215 | "787968B4FA32C3FD2417842E73BBFEFF2F3C848B6831D7E0EC65228B3937E498", | |
216 | "63E4C6D3B23B0C849CF84241484BFE48F61D59A5B16BA06E6E12D1DA27C5249A", | |
217 | "421DEBD61B62EAB6746434EBC3CC315E32220B3BADD50BDC4C4E6C147FEDD43D", | |
218 | "0680512BCBB42C07D47349D2153B70C4E5D7FDFCBFA36EA1A85841B9E46E09A2", | |
219 | "8542D69E4C044F18E8B92435BF6FF7DD297720630485628D5AE74EE7C32E79B7", | |
220 | "1"); | |
221 | ||
222 | if (!TEST_ptr(test_group)) | |
223 | goto done; | |
224 | ||
225 | if (!test_sm2_crypt( | |
226 | test_group, | |
227 | EVP_sm3(), | |
228 | "1649AB77A00637BD5E2EFE283FBF353534AA7F7CB89463F208DDBC2920BB0DA0", | |
229 | "encryption standard", | |
f73164ca BE |
230 | "004C62EEFD6ECFC2B95B92FD6C3D9575148AFA17425546D49018E5388D49DD7B4F" |
231 | "0092e8ff62146873c258557548500ab2df2a365e0609ab67640a1f6d57d7b17820" | |
232 | "008349312695a3e1d2f46905f39a766487f2432e95d6be0cb009fe8c69fd8825a7", | |
e14d6cf6 MC |
233 | "307B0220245C26FB68B1DDDDB12C4B6BF9F2B6D5FE60A383B0D18D1C4144ABF1" |
234 | "7F6252E7022076CB9264C2A7E88E52B19903FDC47378F605E36811F5C07423A2" | |
235 | "4B84400F01B804209C3D7360C30156FAB7C80A0276712DA9D8094A634B766D3A" | |
236 | "285E07480653426D0413650053A89B41C418B0C3AAD00D886C00286467")) | |
237 | goto done; | |
238 | ||
239 | /* Same test as above except using SHA-256 instead of SM3 */ | |
240 | if (!test_sm2_crypt( | |
241 | test_group, | |
242 | EVP_sha256(), | |
243 | "1649AB77A00637BD5E2EFE283FBF353534AA7F7CB89463F208DDBC2920BB0DA0", | |
244 | "encryption standard", | |
f73164ca BE |
245 | "004C62EEFD6ECFC2B95B92FD6C3D9575148AFA17425546D49018E5388D49DD7B4F" |
246 | "003da18008784352192d70f22c26c243174a447ba272fec64163dd4742bae8bc98" | |
247 | "00df17605cf304e9dd1dfeb90c015e93b393a6f046792f790a6fa4228af67d9588", | |
e14d6cf6 MC |
248 | "307B0220245C26FB68B1DDDDB12C4B6BF9F2B6D5FE60A383B0D18D1C4144ABF17F" |
249 | "6252E7022076CB9264C2A7E88E52B19903FDC47378F605E36811F5C07423A24B84" | |
250 | "400F01B80420BE89139D07853100EFA763F60CBE30099EA3DF7F8F364F9D10A5E9" | |
251 | "88E3C5AAFC0413229E6C9AEE2BB92CAD649FE2C035689785DA33")) | |
252 | goto done; | |
253 | ||
254 | testresult = 1; | |
255 | done: | |
256 | EC_GROUP_free(test_group); | |
257 | ||
258 | return testresult; | |
259 | } | |
260 | ||
261 | static int test_sm2_sign(const EC_GROUP *group, | |
262 | const char *userid, | |
263 | const char *privkey_hex, | |
264 | const char *message, | |
265 | const char *k_hex, | |
266 | const char *r_hex, | |
267 | const char *s_hex) | |
268 | { | |
269 | const size_t msg_len = strlen(message); | |
270 | int ok = 0; | |
271 | BIGNUM *priv = NULL; | |
272 | EC_POINT *pt = NULL; | |
273 | EC_KEY *key = NULL; | |
274 | ECDSA_SIG *sig = NULL; | |
275 | const BIGNUM *sig_r = NULL; | |
276 | const BIGNUM *sig_s = NULL; | |
277 | BIGNUM *r = NULL; | |
278 | BIGNUM *s = NULL; | |
279 | ||
280 | if (!TEST_true(BN_hex2bn(&priv, privkey_hex))) | |
281 | goto done; | |
282 | ||
283 | key = EC_KEY_new(); | |
284 | if (!TEST_ptr(key) | |
285 | || !TEST_true(EC_KEY_set_group(key, group)) | |
286 | || !TEST_true(EC_KEY_set_private_key(key, priv))) | |
287 | goto done; | |
288 | ||
289 | pt = EC_POINT_new(group); | |
290 | if (!TEST_ptr(pt) | |
291 | || !TEST_true(EC_POINT_mul(group, pt, priv, NULL, NULL, NULL)) | |
292 | || !TEST_true(EC_KEY_set_public_key(key, pt))) | |
293 | goto done; | |
294 | ||
295 | start_fake_rand(k_hex); | |
32ab57cb SL |
296 | sig = ossl_sm2_do_sign(key, EVP_sm3(), (const uint8_t *)userid, |
297 | strlen(userid), (const uint8_t *)message, msg_len); | |
09736245 | 298 | if (!TEST_ptr(sig)) { |
f73164ca | 299 | restore_rand(); |
e14d6cf6 | 300 | goto done; |
f73164ca BE |
301 | } |
302 | restore_rand(); | |
e14d6cf6 MC |
303 | |
304 | ECDSA_SIG_get0(sig, &sig_r, &sig_s); | |
305 | ||
306 | if (!TEST_true(BN_hex2bn(&r, r_hex)) | |
307 | || !TEST_true(BN_hex2bn(&s, s_hex)) | |
308 | || !TEST_BN_eq(r, sig_r) | |
309 | || !TEST_BN_eq(s, sig_s)) | |
310 | goto done; | |
311 | ||
32ab57cb SL |
312 | ok = ossl_sm2_do_verify(key, EVP_sm3(), sig, (const uint8_t *)userid, |
313 | strlen(userid), (const uint8_t *)message, msg_len); | |
e14d6cf6 MC |
314 | |
315 | /* We goto done whether this passes or fails */ | |
316 | TEST_true(ok); | |
317 | ||
318 | done: | |
319 | ECDSA_SIG_free(sig); | |
320 | EC_POINT_free(pt); | |
321 | EC_KEY_free(key); | |
322 | BN_free(priv); | |
323 | BN_free(r); | |
324 | BN_free(s); | |
325 | ||
326 | return ok; | |
327 | } | |
328 | ||
329 | static int sm2_sig_test(void) | |
330 | { | |
331 | int testresult = 0; | |
332 | /* From draft-shen-sm2-ecdsa-02 */ | |
333 | EC_GROUP *test_group = | |
334 | create_EC_group | |
335 | ("8542D69E4C044F18E8B92435BF6FF7DE457283915C45517D722EDB8B08F1DFC3", | |
336 | "787968B4FA32C3FD2417842E73BBFEFF2F3C848B6831D7E0EC65228B3937E498", | |
337 | "63E4C6D3B23B0C849CF84241484BFE48F61D59A5B16BA06E6E12D1DA27C5249A", | |
338 | "421DEBD61B62EAB6746434EBC3CC315E32220B3BADD50BDC4C4E6C147FEDD43D", | |
339 | "0680512BCBB42C07D47349D2153B70C4E5D7FDFCBFA36EA1A85841B9E46E09A2", | |
340 | "8542D69E4C044F18E8B92435BF6FF7DD297720630485628D5AE74EE7C32E79B7", | |
341 | "1"); | |
342 | ||
343 | if (!TEST_ptr(test_group)) | |
344 | goto done; | |
345 | ||
346 | if (!TEST_true(test_sm2_sign( | |
347 | test_group, | |
348 | "ALICE123@YAHOO.COM", | |
349 | "128B2FA8BD433C6C068C8D803DFF79792A519A55171B1B650C23661D15897263", | |
350 | "message digest", | |
f73164ca BE |
351 | "006CB28D99385C175C94F94E934817663FC176D925DD72B727260DBAAE1FB2F96F" |
352 | "007c47811054c6f99613a578eb8453706ccb96384fe7df5c171671e760bfa8be3a", | |
e14d6cf6 MC |
353 | "40F1EC59F793D9F49E09DCEF49130D4194F79FB1EED2CAA55BACDB49C4E755D1", |
354 | "6FC6DAC32C5D5CF10C77DFB20F7C2EB667A457872FB09EC56327A67EC7DEEBE7"))) | |
355 | goto done; | |
356 | ||
357 | testresult = 1; | |
358 | ||
359 | done: | |
360 | EC_GROUP_free(test_group); | |
361 | ||
362 | return testresult; | |
363 | } | |
364 | ||
365 | #endif | |
366 | ||
367 | int setup_tests(void) | |
368 | { | |
369 | #ifdef OPENSSL_NO_SM2 | |
370 | TEST_note("SM2 is disabled."); | |
371 | #else | |
332a245c P |
372 | fake_rand = fake_rand_start(NULL); |
373 | if (fake_rand == NULL) | |
374 | return 0; | |
375 | ||
e14d6cf6 MC |
376 | ADD_TEST(sm2_crypt_test); |
377 | ADD_TEST(sm2_sig_test); | |
378 | #endif | |
379 | return 1; | |
380 | } | |
332a245c P |
381 | |
382 | void cleanup_tests(void) | |
383 | { | |
31e2e6e0 | 384 | #ifndef OPENSSL_NO_SM2 |
332a245c P |
385 | fake_rand_finish(fake_rand); |
386 | #endif | |
387 | } |