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source: vbox/trunk/src/libs/openssl-3.1.5/test/sm2_internal_test.c@ 105770

Last change on this file since 105770 was 104078, checked in by vboxsync, 8 months ago

openssl-3.1.5: Applied and adjusted our OpenSSL changes to 3.1.4. bugref:10638
File size: 13.6 KB
Line 
1/*
2 * Copyright 2017-2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
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
8 */
9
10/*
11 * Low level APIs are deprecated for public use, but still ok for internal use.
12 */
13#include "internal/deprecated.h"
14
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
29# include "crypto/sm2.h"
30
31static fake_random_generate_cb get_faked_bytes;
32
33static OSSL_PROVIDER *fake_rand = NULL;
34static uint8_t *fake_rand_bytes = NULL;
35static size_t fake_rand_bytes_offset = 0;
36static size_t fake_rand_size = 0;
37
38static int get_faked_bytes(unsigned char *buf, size_t num,
39 ossl_unused const char *name,
40 ossl_unused EVP_RAND_CTX *ctx)
41{
42 if (!TEST_ptr(fake_rand_bytes) || !TEST_size_t_gt(fake_rand_size, 0))
43 return 0;
44
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
51 return 1;
52}
53
54static int start_fake_rand(const char *hex_bytes)
55{
56 OPENSSL_free(fake_rand_bytes);
57 fake_rand_bytes_offset = 0;
58 fake_rand_size = strlen(hex_bytes) / 2;
59 if (!TEST_ptr(fake_rand_bytes = OPENSSL_hexstr2buf(hex_bytes, NULL)))
60 return 0;
61
62 /* use own random function */
63 fake_rand_set_public_private_callbacks(NULL, get_faked_bytes);
64 return 1;
65
66}
67
68static void restore_rand(void)
69{
70 fake_rand_set_public_private_callbacks(NULL, NULL);
71 OPENSSL_free(fake_rand_bytes);
72 fake_rand_bytes = NULL;
73 fake_rand_bytes_offset = 0;
74}
75
76static 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))
107 || !TEST_true(EC_POINT_set_affine_coordinates(group, generator, g_x,
108 g_y, NULL)))
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;
117done:
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
134static 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))
166 || !TEST_true(ossl_sm2_ciphertext_size(key, digest, msg_len,
167 &ctext_len)))
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);
175 if (!TEST_true(ossl_sm2_encrypt(key, digest,
176 (const uint8_t *)message, msg_len,
177 ctext, &ctext_len))) {
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
186 if (!TEST_true(ossl_sm2_plaintext_size(ctext, ctext_len, &ptext_len))
187 || !TEST_int_eq(ptext_len, msg_len))
188 goto done;
189
190 recovered = OPENSSL_zalloc(ptext_len);
191 if (!TEST_ptr(recovered)
192 || !TEST_true(ossl_sm2_decrypt(key, digest, ctext, ctext_len,
193 recovered, &recovered_len))
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
209static int sm2_crypt_test(void)
210{
211 int testresult = 0;
212 EC_GROUP *gm_group = NULL;
213 EC_GROUP *test_group =
214 create_EC_group
215 ("8542D69E4C044F18E8B92435BF6FF7DE457283915C45517D722EDB8B08F1DFC3",
216 "787968B4FA32C3FD2417842E73BBFEFF2F3C848B6831D7E0EC65228B3937E498",
217 "63E4C6D3B23B0C849CF84241484BFE48F61D59A5B16BA06E6E12D1DA27C5249A",
218 "421DEBD61B62EAB6746434EBC3CC315E32220B3BADD50BDC4C4E6C147FEDD43D",
219 "0680512BCBB42C07D47349D2153B70C4E5D7FDFCBFA36EA1A85841B9E46E09A2",
220 "8542D69E4C044F18E8B92435BF6FF7DD297720630485628D5AE74EE7C32E79B7",
221 "1");
222
223 if (!TEST_ptr(test_group))
224 goto done;
225
226 if (!test_sm2_crypt(
227 test_group,
228 EVP_sm3(),
229 "1649AB77A00637BD5E2EFE283FBF353534AA7F7CB89463F208DDBC2920BB0DA0",
230 "encryption standard",
231 "004C62EEFD6ECFC2B95B92FD6C3D9575148AFA17425546D49018E5388D49DD7B4F"
232 "0092e8ff62146873c258557548500ab2df2a365e0609ab67640a1f6d57d7b17820"
233 "008349312695a3e1d2f46905f39a766487f2432e95d6be0cb009fe8c69fd8825a7",
234 "307B0220245C26FB68B1DDDDB12C4B6BF9F2B6D5FE60A383B0D18D1C4144ABF1"
235 "7F6252E7022076CB9264C2A7E88E52B19903FDC47378F605E36811F5C07423A2"
236 "4B84400F01B804209C3D7360C30156FAB7C80A0276712DA9D8094A634B766D3A"
237 "285E07480653426D0413650053A89B41C418B0C3AAD00D886C00286467"))
238 goto done;
239
240 /* Same test as above except using SHA-256 instead of SM3 */
241 if (!test_sm2_crypt(
242 test_group,
243 EVP_sha256(),
244 "1649AB77A00637BD5E2EFE283FBF353534AA7F7CB89463F208DDBC2920BB0DA0",
245 "encryption standard",
246 "004C62EEFD6ECFC2B95B92FD6C3D9575148AFA17425546D49018E5388D49DD7B4F"
247 "003da18008784352192d70f22c26c243174a447ba272fec64163dd4742bae8bc98"
248 "00df17605cf304e9dd1dfeb90c015e93b393a6f046792f790a6fa4228af67d9588",
249 "307B0220245C26FB68B1DDDDB12C4B6BF9F2B6D5FE60A383B0D18D1C4144ABF17F"
250 "6252E7022076CB9264C2A7E88E52B19903FDC47378F605E36811F5C07423A24B84"
251 "400F01B80420BE89139D07853100EFA763F60CBE30099EA3DF7F8F364F9D10A5E9"
252 "88E3C5AAFC0413229E6C9AEE2BB92CAD649FE2C035689785DA33"))
253 goto done;
254
255 /* From Annex C in both GM/T0003.5-2012 and GB/T 32918.5-2016.*/
256 gm_group = create_EC_group(
257 "fffffffeffffffffffffffffffffffffffffffff00000000ffffffffffffffff",
258 "fffffffeffffffffffffffffffffffffffffffff00000000fffffffffffffffc",
259 "28e9fa9e9d9f5e344d5a9e4bcf6509a7f39789f515ab8f92ddbcbd414d940e93",
260 "32c4ae2c1f1981195f9904466a39c9948fe30bbff2660be1715a4589334c74c7",
261 "bc3736a2f4f6779c59bdcee36b692153d0a9877cc62a474002df32e52139f0a0",
262 "fffffffeffffffffffffffffffffffff7203df6b21c6052b53bbf40939d54123",
263 "1");
264
265 if (!TEST_ptr(gm_group))
266 goto done;
267
268 if (!test_sm2_crypt(
269 gm_group,
270 EVP_sm3(),
271 /* privkey (from which the encrypting public key is derived) */
272 "3945208F7B2144B13F36E38AC6D39F95889393692860B51A42FB81EF4DF7C5B8",
273 /* plaintext message */
274 "encryption standard",
275 /* ephemeral nonce k */
276 "59276E27D506861A16680F3AD9C02DCCEF3CC1FA3CDBE4CE6D54B80DEAC1BC21",
277 /*
278 * expected ciphertext, the field values are from GM/T 0003.5-2012
279 * (Annex C), but serialized following the ASN.1 format specified
280 * in GM/T 0009-2012 (Sec. 7.2).
281 */
282 "307C" /* SEQUENCE, 0x7c bytes */
283 "0220" /* INTEGER, 0x20 bytes */
284 "04EBFC718E8D1798620432268E77FEB6415E2EDE0E073C0F4F640ECD2E149A73"
285 "0221" /* INTEGER, 0x21 bytes */
286 "00" /* leading 00 due to DER for pos. int with topmost bit set */
287 "E858F9D81E5430A57B36DAAB8F950A3C64E6EE6A63094D99283AFF767E124DF0"
288 "0420" /* OCTET STRING, 0x20 bytes */
289 "59983C18F809E262923C53AEC295D30383B54E39D609D160AFCB1908D0BD8766"
290 "0413" /* OCTET STRING, 0x13 bytes */
291 "21886CA989CA9C7D58087307CA93092D651EFA"))
292 goto done;
293
294 testresult = 1;
295 done:
296 EC_GROUP_free(test_group);
297 EC_GROUP_free(gm_group);
298
299 return testresult;
300}
301
302static int test_sm2_sign(const EC_GROUP *group,
303 const char *userid,
304 const char *privkey_hex,
305 const char *message,
306 const char *k_hex,
307 const char *r_hex,
308 const char *s_hex)
309{
310 const size_t msg_len = strlen(message);
311 int ok = 0;
312 BIGNUM *priv = NULL;
313 EC_POINT *pt = NULL;
314 EC_KEY *key = NULL;
315 ECDSA_SIG *sig = NULL;
316 const BIGNUM *sig_r = NULL;
317 const BIGNUM *sig_s = NULL;
318 BIGNUM *r = NULL;
319 BIGNUM *s = NULL;
320
321 if (!TEST_true(BN_hex2bn(&priv, privkey_hex)))
322 goto done;
323
324 key = EC_KEY_new();
325 if (!TEST_ptr(key)
326 || !TEST_true(EC_KEY_set_group(key, group))
327 || !TEST_true(EC_KEY_set_private_key(key, priv)))
328 goto done;
329
330 pt = EC_POINT_new(group);
331 if (!TEST_ptr(pt)
332 || !TEST_true(EC_POINT_mul(group, pt, priv, NULL, NULL, NULL))
333 || !TEST_true(EC_KEY_set_public_key(key, pt)))
334 goto done;
335
336 start_fake_rand(k_hex);
337 sig = ossl_sm2_do_sign(key, EVP_sm3(), (const uint8_t *)userid,
338 strlen(userid), (const uint8_t *)message, msg_len);
339 if (!TEST_ptr(sig)) {
340 restore_rand();
341 goto done;
342 }
343 restore_rand();
344
345 ECDSA_SIG_get0(sig, &sig_r, &sig_s);
346
347 if (!TEST_true(BN_hex2bn(&r, r_hex))
348 || !TEST_true(BN_hex2bn(&s, s_hex))
349 || !TEST_BN_eq(r, sig_r)
350 || !TEST_BN_eq(s, sig_s))
351 goto done;
352
353 ok = ossl_sm2_do_verify(key, EVP_sm3(), sig, (const uint8_t *)userid,
354 strlen(userid), (const uint8_t *)message, msg_len);
355
356 /* We goto done whether this passes or fails */
357 TEST_true(ok);
358
359 done:
360 ECDSA_SIG_free(sig);
361 EC_POINT_free(pt);
362 EC_KEY_free(key);
363 BN_free(priv);
364 BN_free(r);
365 BN_free(s);
366
367 return ok;
368}
369
370static int sm2_sig_test(void)
371{
372 int testresult = 0;
373 /* From draft-shen-sm2-ecdsa-02 */
374 EC_GROUP *test_group =
375 create_EC_group
376 ("8542D69E4C044F18E8B92435BF6FF7DE457283915C45517D722EDB8B08F1DFC3",
377 "787968B4FA32C3FD2417842E73BBFEFF2F3C848B6831D7E0EC65228B3937E498",
378 "63E4C6D3B23B0C849CF84241484BFE48F61D59A5B16BA06E6E12D1DA27C5249A",
379 "421DEBD61B62EAB6746434EBC3CC315E32220B3BADD50BDC4C4E6C147FEDD43D",
380 "0680512BCBB42C07D47349D2153B70C4E5D7FDFCBFA36EA1A85841B9E46E09A2",
381 "8542D69E4C044F18E8B92435BF6FF7DD297720630485628D5AE74EE7C32E79B7",
382 "1");
383
384 if (!TEST_ptr(test_group))
385 goto done;
386
387 if (!TEST_true(test_sm2_sign(
388 test_group,
389 "ALICE123@YAHOO.COM",
390 "128B2FA8BD433C6C068C8D803DFF79792A519A55171B1B650C23661D15897263",
391 "message digest",
392 "006CB28D99385C175C94F94E934817663FC176D925DD72B727260DBAAE1FB2F96F"
393 "007c47811054c6f99613a578eb8453706ccb96384fe7df5c171671e760bfa8be3a",
394 "40F1EC59F793D9F49E09DCEF49130D4194F79FB1EED2CAA55BACDB49C4E755D1",
395 "6FC6DAC32C5D5CF10C77DFB20F7C2EB667A457872FB09EC56327A67EC7DEEBE7")))
396 goto done;
397
398 testresult = 1;
399
400 done:
401 EC_GROUP_free(test_group);
402
403 return testresult;
404}
405
406#endif
407
408int setup_tests(void)
409{
410#ifdef OPENSSL_NO_SM2
411 TEST_note("SM2 is disabled.");
412#else
413 fake_rand = fake_rand_start(NULL);
414 if (fake_rand == NULL)
415 return 0;
416
417 ADD_TEST(sm2_crypt_test);
418 ADD_TEST(sm2_sig_test);
419#endif
420 return 1;
421}
422
423void cleanup_tests(void)
424{
425#ifndef OPENSSL_NO_SM2
426 fake_rand_finish(fake_rand);
427#endif
428}
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