Bitcoin Core 31.0.0
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tests_impl.h
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1/***********************************************************************
2 * Copyright (c) 2013-2015 Pieter Wuille *
3 * Distributed under the MIT software license, see the accompanying *
4 * file COPYING or https://www.opensource.org/licenses/mit-license.php.*
5 ***********************************************************************/
6
7#ifndef SECP256K1_MODULE_RECOVERY_TESTS_H
8#define SECP256K1_MODULE_RECOVERY_TESTS_H
9
10#include "../../unit_test.h"
11
12static int recovery_test_nonce_function(unsigned char *nonce32, const unsigned char *msg32, const unsigned char *key32, const unsigned char *algo16, void *data, unsigned int counter) {
13 (void) msg32;
14 (void) key32;
15 (void) algo16;
16 (void) data;
17
18 /* On the first run, return 0 to force a second run */
19 if (counter == 0) {
20 memset(nonce32, 0, 32);
21 return 1;
22 }
23 /* On the second run, return an overflow to force a third run */
24 if (counter == 1) {
25 memset(nonce32, 0xff, 32);
26 return 1;
27 }
28 /* On the next run, return a valid nonce, but flip a coin as to whether or not to fail signing. */
29 memset(nonce32, 1, 32);
30 return testrand_bits(1);
31}
32
33static void test_ecdsa_recovery_api_internal(void) {
34 /* Setup contexts that just count errors */
35 secp256k1_pubkey pubkey;
36 secp256k1_pubkey recpubkey;
37 secp256k1_ecdsa_signature normal_sig;
38 secp256k1_ecdsa_recoverable_signature recsig;
39 unsigned char privkey[32] = { 1 };
40 unsigned char message[32] = { 2 };
41 int recid = 0;
42 unsigned char sig[74];
43 unsigned char zero_privkey[32] = { 0 };
44 unsigned char over_privkey[32] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
45 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
46 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
47 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
48
49 /* Construct and verify corresponding public key. */
50 CHECK(secp256k1_ec_seckey_verify(CTX, privkey) == 1);
51 CHECK(secp256k1_ec_pubkey_create(CTX, &pubkey, privkey) == 1);
52
53 /* Check bad contexts and NULLs for signing */
54 CHECK(secp256k1_ecdsa_sign_recoverable(CTX, &recsig, message, privkey, NULL, NULL) == 1);
55 CHECK_ILLEGAL(CTX, secp256k1_ecdsa_sign_recoverable(CTX, NULL, message, privkey, NULL, NULL));
56 CHECK_ILLEGAL(CTX, secp256k1_ecdsa_sign_recoverable(CTX, &recsig, NULL, privkey, NULL, NULL));
57 CHECK_ILLEGAL(CTX, secp256k1_ecdsa_sign_recoverable(CTX, &recsig, message, NULL, NULL, NULL));
58 CHECK_ILLEGAL(STATIC_CTX, secp256k1_ecdsa_sign_recoverable(STATIC_CTX, &recsig, message, privkey, NULL, NULL));
59 /* This will fail or succeed randomly, and in either case will not ARG_CHECK failure */
60 secp256k1_ecdsa_sign_recoverable(CTX, &recsig, message, privkey, recovery_test_nonce_function, NULL);
61 /* These will all fail, but not in ARG_CHECK way */
62 CHECK(secp256k1_ecdsa_sign_recoverable(CTX, &recsig, message, zero_privkey, NULL, NULL) == 0);
63 CHECK(secp256k1_ecdsa_sign_recoverable(CTX, &recsig, message, over_privkey, NULL, NULL) == 0);
64 /* This one will succeed. */
65 CHECK(secp256k1_ecdsa_sign_recoverable(CTX, &recsig, message, privkey, NULL, NULL) == 1);
66
67 /* Check signing with a goofy nonce function */
68
69 /* Check bad contexts and NULLs for recovery */
70 CHECK(secp256k1_ecdsa_recover(CTX, &recpubkey, &recsig, message) == 1);
71 CHECK_ILLEGAL(CTX, secp256k1_ecdsa_recover(CTX, NULL, &recsig, message));
72 CHECK_ILLEGAL(CTX, secp256k1_ecdsa_recover(CTX, &recpubkey, NULL, message));
73 CHECK_ILLEGAL(CTX, secp256k1_ecdsa_recover(CTX, &recpubkey, &recsig, NULL));
74
75 /* Check NULLs for conversion */
76 CHECK(secp256k1_ecdsa_sign(CTX, &normal_sig, message, privkey, NULL, NULL) == 1);
77 CHECK_ILLEGAL(CTX, secp256k1_ecdsa_recoverable_signature_convert(CTX, NULL, &recsig));
78 CHECK_ILLEGAL(CTX, secp256k1_ecdsa_recoverable_signature_convert(CTX, &normal_sig, NULL));
79 CHECK(secp256k1_ecdsa_recoverable_signature_convert(CTX, &normal_sig, &recsig) == 1);
80
81 /* Check NULLs for de/serialization */
82 CHECK(secp256k1_ecdsa_sign_recoverable(CTX, &recsig, message, privkey, NULL, NULL) == 1);
83 CHECK_ILLEGAL(CTX, secp256k1_ecdsa_recoverable_signature_serialize_compact(CTX, NULL, &recid, &recsig));
84 CHECK_ILLEGAL(CTX, secp256k1_ecdsa_recoverable_signature_serialize_compact(CTX, sig, NULL, &recsig));
85 CHECK_ILLEGAL(CTX, secp256k1_ecdsa_recoverable_signature_serialize_compact(CTX, sig, &recid, NULL));
86 CHECK(secp256k1_ecdsa_recoverable_signature_serialize_compact(CTX, sig, &recid, &recsig) == 1);
87
88 CHECK_ILLEGAL(CTX, secp256k1_ecdsa_recoverable_signature_parse_compact(CTX, NULL, sig, recid));
89 CHECK_ILLEGAL(CTX, secp256k1_ecdsa_recoverable_signature_parse_compact(CTX, &recsig, NULL, recid));
90 CHECK_ILLEGAL(CTX, secp256k1_ecdsa_recoverable_signature_parse_compact(CTX, &recsig, sig, -1));
91 CHECK_ILLEGAL(CTX, secp256k1_ecdsa_recoverable_signature_parse_compact(CTX, &recsig, sig, 5));
92 /* overflow in signature will not result in calling illegal_callback */
93 memcpy(sig, over_privkey, 32);
94 CHECK(secp256k1_ecdsa_recoverable_signature_parse_compact(CTX, &recsig, sig, recid) == 0);
95}
96
97static void test_ecdsa_recovery_end_to_end_internal(void) {
98 unsigned char extra[32] = {0x00};
99 unsigned char privkey[32];
100 unsigned char message[32];
101 secp256k1_ecdsa_signature signature[5];
102 secp256k1_ecdsa_recoverable_signature rsignature[5];
103 unsigned char sig[74];
104 secp256k1_pubkey pubkey;
105 secp256k1_pubkey recpubkey;
106 int recid = 0;
107
108 /* Generate a random key and message. */
109 {
110 secp256k1_scalar msg, key;
111 testutil_random_scalar_order_test(&msg);
112 testutil_random_scalar_order_test(&key);
113 secp256k1_scalar_get_b32(privkey, &key);
114 secp256k1_scalar_get_b32(message, &msg);
115 }
116
117 /* Construct and verify corresponding public key. */
118 CHECK(secp256k1_ec_seckey_verify(CTX, privkey) == 1);
119 CHECK(secp256k1_ec_pubkey_create(CTX, &pubkey, privkey) == 1);
120
121 /* Serialize/parse compact and verify/recover. */
122 extra[0] = 0;
123 CHECK(secp256k1_ecdsa_sign_recoverable(CTX, &rsignature[0], message, privkey, NULL, NULL) == 1);
124 CHECK(secp256k1_ecdsa_sign(CTX, &signature[0], message, privkey, NULL, NULL) == 1);
125 CHECK(secp256k1_ecdsa_sign_recoverable(CTX, &rsignature[4], message, privkey, NULL, NULL) == 1);
126 CHECK(secp256k1_ecdsa_sign_recoverable(CTX, &rsignature[1], message, privkey, NULL, extra) == 1);
127 extra[31] = 1;
128 CHECK(secp256k1_ecdsa_sign_recoverable(CTX, &rsignature[2], message, privkey, NULL, extra) == 1);
129 extra[31] = 0;
130 extra[0] = 1;
131 CHECK(secp256k1_ecdsa_sign_recoverable(CTX, &rsignature[3], message, privkey, NULL, extra) == 1);
132 CHECK(secp256k1_ecdsa_recoverable_signature_serialize_compact(CTX, sig, &recid, &rsignature[4]) == 1);
133 CHECK(secp256k1_ecdsa_recoverable_signature_convert(CTX, &signature[4], &rsignature[4]) == 1);
134 CHECK(secp256k1_memcmp_var(&signature[4], &signature[0], 64) == 0);
135 CHECK(secp256k1_ecdsa_verify(CTX, &signature[4], message, &pubkey) == 1);
136 memset(&rsignature[4], 0, sizeof(rsignature[4]));
137 CHECK(secp256k1_ecdsa_recoverable_signature_parse_compact(CTX, &rsignature[4], sig, recid) == 1);
138 CHECK(secp256k1_ecdsa_recoverable_signature_convert(CTX, &signature[4], &rsignature[4]) == 1);
139 CHECK(secp256k1_ecdsa_verify(CTX, &signature[4], message, &pubkey) == 1);
140 /* Parse compact (with recovery id) and recover. */
141 CHECK(secp256k1_ecdsa_recoverable_signature_parse_compact(CTX, &rsignature[4], sig, recid) == 1);
142 CHECK(secp256k1_ecdsa_recover(CTX, &recpubkey, &rsignature[4], message) == 1);
143 CHECK(secp256k1_memcmp_var(&pubkey, &recpubkey, sizeof(pubkey)) == 0);
144 /* Serialize/destroy/parse signature and verify again. */
145 CHECK(secp256k1_ecdsa_recoverable_signature_serialize_compact(CTX, sig, &recid, &rsignature[4]) == 1);
146 sig[testrand_bits(6)] += 1 + testrand_int(255);
147 CHECK(secp256k1_ecdsa_recoverable_signature_parse_compact(CTX, &rsignature[4], sig, recid) == 1);
148 CHECK(secp256k1_ecdsa_recoverable_signature_convert(CTX, &signature[4], &rsignature[4]) == 1);
149 CHECK(secp256k1_ecdsa_verify(CTX, &signature[4], message, &pubkey) == 0);
150 /* Recover again */
151 CHECK(secp256k1_ecdsa_recover(CTX, &recpubkey, &rsignature[4], message) == 0 ||
152 secp256k1_memcmp_var(&pubkey, &recpubkey, sizeof(pubkey)) != 0);
153}
154
155/* Tests several edge cases. */
156static void test_ecdsa_recovery_edge_cases(void) {
157 const unsigned char msg32[32] = {
158 'T', 'h', 'i', 's', ' ', 'i', 's', ' ',
159 'a', ' ', 'v', 'e', 'r', 'y', ' ', 's',
160 'e', 'c', 'r', 'e', 't', ' ', 'm', 'e',
161 's', 's', 'a', 'g', 'e', '.', '.', '.'
162 };
163 const unsigned char sig64[64] = {
164 /* Generated by signing the above message with nonce 'This is the nonce we will use...'
165 * and secret key 0 (which is not valid), resulting in recid 1. */
166 0x67, 0xCB, 0x28, 0x5F, 0x9C, 0xD1, 0x94, 0xE8,
167 0x40, 0xD6, 0x29, 0x39, 0x7A, 0xF5, 0x56, 0x96,
168 0x62, 0xFD, 0xE4, 0x46, 0x49, 0x99, 0x59, 0x63,
169 0x17, 0x9A, 0x7D, 0xD1, 0x7B, 0xD2, 0x35, 0x32,
170 0x4B, 0x1B, 0x7D, 0xF3, 0x4C, 0xE1, 0xF6, 0x8E,
171 0x69, 0x4F, 0xF6, 0xF1, 0x1A, 0xC7, 0x51, 0xDD,
172 0x7D, 0xD7, 0x3E, 0x38, 0x7E, 0xE4, 0xFC, 0x86,
173 0x6E, 0x1B, 0xE8, 0xEC, 0xC7, 0xDD, 0x95, 0x57
174 };
175 secp256k1_pubkey pubkey;
176 /* signature (r,s) = (4,4), which can be recovered with all 4 recids. */
177 const unsigned char sigb64[64] = {
178 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
179 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
180 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
181 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04,
182 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
183 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
184 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
185 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04,
186 };
187 secp256k1_pubkey pubkeyb;
188 secp256k1_ecdsa_recoverable_signature rsig;
189 secp256k1_ecdsa_signature sig;
190 int recid;
191
192 CHECK(secp256k1_ecdsa_recoverable_signature_parse_compact(CTX, &rsig, sig64, 0));
193 CHECK(!secp256k1_ecdsa_recover(CTX, &pubkey, &rsig, msg32));
194 CHECK(secp256k1_ecdsa_recoverable_signature_parse_compact(CTX, &rsig, sig64, 1));
195 CHECK(secp256k1_ecdsa_recover(CTX, &pubkey, &rsig, msg32));
196 CHECK(secp256k1_ecdsa_recoverable_signature_parse_compact(CTX, &rsig, sig64, 2));
197 CHECK(!secp256k1_ecdsa_recover(CTX, &pubkey, &rsig, msg32));
198 CHECK(secp256k1_ecdsa_recoverable_signature_parse_compact(CTX, &rsig, sig64, 3));
199 CHECK(!secp256k1_ecdsa_recover(CTX, &pubkey, &rsig, msg32));
200
201 for (recid = 0; recid < 4; recid++) {
202 int i;
203 int recid2;
204 /* (4,4) encoded in DER. */
205 unsigned char sigbder[8] = {0x30, 0x06, 0x02, 0x01, 0x04, 0x02, 0x01, 0x04};
206 unsigned char sigcder_zr[7] = {0x30, 0x05, 0x02, 0x00, 0x02, 0x01, 0x01};
207 unsigned char sigcder_zs[7] = {0x30, 0x05, 0x02, 0x01, 0x01, 0x02, 0x00};
208 unsigned char sigbderalt1[39] = {
209 0x30, 0x25, 0x02, 0x20, 0x00, 0x00, 0x00, 0x00,
210 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
211 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
212 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
213 0x00, 0x00, 0x00, 0x04, 0x02, 0x01, 0x04,
214 };
215 unsigned char sigbderalt2[39] = {
216 0x30, 0x25, 0x02, 0x01, 0x04, 0x02, 0x20, 0x00,
217 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
218 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
219 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
220 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04,
221 };
222 unsigned char sigbderalt3[40] = {
223 0x30, 0x26, 0x02, 0x21, 0x00, 0x00, 0x00, 0x00,
224 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
225 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
226 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
227 0x00, 0x00, 0x00, 0x00, 0x04, 0x02, 0x01, 0x04,
228 };
229 unsigned char sigbderalt4[40] = {
230 0x30, 0x26, 0x02, 0x01, 0x04, 0x02, 0x21, 0x00,
231 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
232 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
233 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
234 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04,
235 };
236 /* (order + r,4) encoded in DER. */
237 unsigned char sigbderlong[40] = {
238 0x30, 0x26, 0x02, 0x21, 0x00, 0xFF, 0xFF, 0xFF,
239 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
240 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xBA, 0xAE, 0xDC,
241 0xE6, 0xAF, 0x48, 0xA0, 0x3B, 0xBF, 0xD2, 0x5E,
242 0x8C, 0xD0, 0x36, 0x41, 0x45, 0x02, 0x01, 0x04
243 };
244 CHECK(secp256k1_ecdsa_recoverable_signature_parse_compact(CTX, &rsig, sigb64, recid) == 1);
245 CHECK(secp256k1_ecdsa_recover(CTX, &pubkeyb, &rsig, msg32) == 1);
246 CHECK(secp256k1_ecdsa_signature_parse_der(CTX, &sig, sigbder, sizeof(sigbder)) == 1);
247 CHECK(secp256k1_ecdsa_verify(CTX, &sig, msg32, &pubkeyb) == 1);
248 for (recid2 = 0; recid2 < 4; recid2++) {
249 secp256k1_pubkey pubkey2b;
250 CHECK(secp256k1_ecdsa_recoverable_signature_parse_compact(CTX, &rsig, sigb64, recid2) == 1);
251 CHECK(secp256k1_ecdsa_recover(CTX, &pubkey2b, &rsig, msg32) == 1);
252 /* Verifying with (order + r,4) should always fail. */
253 CHECK(secp256k1_ecdsa_signature_parse_der(CTX, &sig, sigbderlong, sizeof(sigbderlong)) == 1);
254 CHECK(secp256k1_ecdsa_verify(CTX, &sig, msg32, &pubkeyb) == 0);
255 }
256 /* DER parsing tests. */
257 /* Zero length r/s. */
258 CHECK(secp256k1_ecdsa_signature_parse_der(CTX, &sig, sigcder_zr, sizeof(sigcder_zr)) == 0);
259 CHECK(secp256k1_ecdsa_signature_parse_der(CTX, &sig, sigcder_zs, sizeof(sigcder_zs)) == 0);
260 /* Leading zeros. */
261 CHECK(secp256k1_ecdsa_signature_parse_der(CTX, &sig, sigbderalt1, sizeof(sigbderalt1)) == 0);
262 CHECK(secp256k1_ecdsa_signature_parse_der(CTX, &sig, sigbderalt2, sizeof(sigbderalt2)) == 0);
263 CHECK(secp256k1_ecdsa_signature_parse_der(CTX, &sig, sigbderalt3, sizeof(sigbderalt3)) == 0);
264 CHECK(secp256k1_ecdsa_signature_parse_der(CTX, &sig, sigbderalt4, sizeof(sigbderalt4)) == 0);
265 sigbderalt3[4] = 1;
266 CHECK(secp256k1_ecdsa_signature_parse_der(CTX, &sig, sigbderalt3, sizeof(sigbderalt3)) == 1);
267 CHECK(secp256k1_ecdsa_verify(CTX, &sig, msg32, &pubkeyb) == 0);
268 sigbderalt4[7] = 1;
269 CHECK(secp256k1_ecdsa_signature_parse_der(CTX, &sig, sigbderalt4, sizeof(sigbderalt4)) == 1);
270 CHECK(secp256k1_ecdsa_verify(CTX, &sig, msg32, &pubkeyb) == 0);
271 /* Damage signature. */
272 sigbder[7]++;
273 CHECK(secp256k1_ecdsa_signature_parse_der(CTX, &sig, sigbder, sizeof(sigbder)) == 1);
274 CHECK(secp256k1_ecdsa_verify(CTX, &sig, msg32, &pubkeyb) == 0);
275 sigbder[7]--;
276 CHECK(secp256k1_ecdsa_signature_parse_der(CTX, &sig, sigbder, 6) == 0);
277 CHECK(secp256k1_ecdsa_signature_parse_der(CTX, &sig, sigbder, sizeof(sigbder) - 1) == 0);
278 for(i = 0; i < 8; i++) {
279 int c;
280 unsigned char orig = sigbder[i];
281 /*Try every single-byte change.*/
282 for (c = 0; c < 256; c++) {
283 if (c == orig ) {
284 continue;
285 }
286 sigbder[i] = c;
287 CHECK(secp256k1_ecdsa_signature_parse_der(CTX, &sig, sigbder, sizeof(sigbder)) == 0 || secp256k1_ecdsa_verify(CTX, &sig, msg32, &pubkeyb) == 0);
288 }
289 sigbder[i] = orig;
290 }
291 }
292
293 /* Test r/s equal to zero */
294 {
295 /* (1,1) encoded in DER. */
296 unsigned char sigcder[8] = {0x30, 0x06, 0x02, 0x01, 0x01, 0x02, 0x01, 0x01};
297 unsigned char sigc64[64] = {
298 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
299 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
300 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
301 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
302 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
303 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
304 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
305 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
306 };
307 secp256k1_pubkey pubkeyc;
308 CHECK(secp256k1_ecdsa_recoverable_signature_parse_compact(CTX, &rsig, sigc64, 0) == 1);
309 CHECK(secp256k1_ecdsa_recover(CTX, &pubkeyc, &rsig, msg32) == 1);
310 CHECK(secp256k1_ecdsa_signature_parse_der(CTX, &sig, sigcder, sizeof(sigcder)) == 1);
311 CHECK(secp256k1_ecdsa_verify(CTX, &sig, msg32, &pubkeyc) == 1);
312 sigcder[4] = 0;
313 sigc64[31] = 0;
314 CHECK(secp256k1_ecdsa_recoverable_signature_parse_compact(CTX, &rsig, sigc64, 0) == 1);
315 CHECK(secp256k1_ecdsa_recover(CTX, &pubkeyb, &rsig, msg32) == 0);
316 CHECK(secp256k1_ecdsa_signature_parse_der(CTX, &sig, sigcder, sizeof(sigcder)) == 1);
317 CHECK(secp256k1_ecdsa_verify(CTX, &sig, msg32, &pubkeyc) == 0);
318 sigcder[4] = 1;
319 sigcder[7] = 0;
320 sigc64[31] = 1;
321 sigc64[63] = 0;
322 CHECK(secp256k1_ecdsa_recoverable_signature_parse_compact(CTX, &rsig, sigc64, 0) == 1);
323 CHECK(secp256k1_ecdsa_recover(CTX, &pubkeyb, &rsig, msg32) == 0);
324 CHECK(secp256k1_ecdsa_signature_parse_der(CTX, &sig, sigcder, sizeof(sigcder)) == 1);
325 CHECK(secp256k1_ecdsa_verify(CTX, &sig, msg32, &pubkeyc) == 0);
326 }
327}
328
329/* --- Test registry --- */
330REPEAT_TEST(test_ecdsa_recovery_api)
331REPEAT_TEST_MULT(test_ecdsa_recovery_end_to_end, 64)
332
333static const struct tf_test_entry tests_recovery[] = {
334 CASE1(test_ecdsa_recovery_api),
335 CASE1(test_ecdsa_recovery_end_to_end),
336 CASE1(test_ecdsa_recovery_edge_cases)
337};
338
339#endif /* SECP256K1_MODULE_RECOVERY_TESTS_H */
CHECK
#define CHECK(cond)
Unconditional failure on condition failure.
Definition util.h:35
test_ecdsa_recovery_end_to_end_internal
static void test_ecdsa_recovery_end_to_end_internal(void)
Definition tests_impl.h:97
test_ecdsa_recovery_api_internal
static void test_ecdsa_recovery_api_internal(void)
Definition tests_impl.h:33
tests_recovery
static const struct tf_test_entry tests_recovery[]
Definition tests_impl.h:333
test_ecdsa_recovery_edge_cases
static void test_ecdsa_recovery_edge_cases(void)
Definition tests_impl.h:156
recovery_test_nonce_function
static int recovery_test_nonce_function(unsigned char *nonce32, const unsigned char *msg32, const unsigned char *key32, const unsigned char *algo16, void *data, unsigned int counter)
Definition tests_impl.h:12
secp256k1_scalar_get_b32
static void secp256k1_scalar_get_b32(unsigned char *bin, const secp256k1_scalar *a)
Convert a scalar to a byte array.
secp256k1_memcmp_var
static SECP256K1_INLINE int secp256k1_memcmp_var(const void *s1, const void *s2, size_t n)
Semantics like memcmp.
Definition util.h:269
secp256k1_ec_seckey_verify
SECP256K1_API SECP256K1_WARN_UNUSED_RESULT int secp256k1_ec_seckey_verify(const secp256k1_context *ctx, const unsigned char *seckey) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2)
Verify an elliptic curve secret key.
Definition secp256k1.c:588
secp256k1_ecdsa_sign
SECP256K1_API int secp256k1_ecdsa_sign(const secp256k1_context *ctx, secp256k1_ecdsa_signature *sig, const unsigned char *msghash32, const unsigned char *seckey, secp256k1_nonce_function noncefp, const void *ndata) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3) SECP256K1_ARG_NONNULL(4)
Create an ECDSA signature.
Definition secp256k1.c:574
secp256k1_ecdsa_signature_parse_der
SECP256K1_API int secp256k1_ecdsa_signature_parse_der(const secp256k1_context *ctx, secp256k1_ecdsa_signature *sig, const unsigned char *input, size_t inputlen) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3)
Parse a DER ECDSA signature.
Definition secp256k1.c:377
secp256k1_ec_pubkey_create
SECP256K1_API SECP256K1_WARN_UNUSED_RESULT int secp256k1_ec_pubkey_create(const secp256k1_context *ctx, secp256k1_pubkey *pubkey, const unsigned char *seckey) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3)
Compute the public key for a secret key.
Definition secp256k1.c:612
secp256k1_ecdsa_verify
SECP256K1_API SECP256K1_WARN_UNUSED_RESULT int secp256k1_ecdsa_verify(const secp256k1_context *ctx, const secp256k1_ecdsa_signature *sig, const unsigned char *msghash32, const secp256k1_pubkey *pubkey) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3) SECP256K1_ARG_NONNULL(4)
Verify an ECDSA signature.
Definition secp256k1.c:458
secp256k1_ecdsa_recoverable_signature_serialize_compact
SECP256K1_API int secp256k1_ecdsa_recoverable_signature_serialize_compact(const secp256k1_context *ctx, unsigned char *output64, int *recid, const secp256k1_ecdsa_recoverable_signature *sig) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3) SECP256K1_ARG_NONNULL(4)
Serialize an ECDSA signature in compact format (64 bytes + recovery id).
Definition main_impl.h:60
secp256k1_ecdsa_recoverable_signature_parse_compact
SECP256K1_API int secp256k1_ecdsa_recoverable_signature_parse_compact(const secp256k1_context *ctx, secp256k1_ecdsa_recoverable_signature *sig, const unsigned char *input64, int recid) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3)
Parse a compact ECDSA signature (64 bytes + recovery id).
Definition main_impl.h:38
secp256k1_ecdsa_sign_recoverable
SECP256K1_API int secp256k1_ecdsa_sign_recoverable(const secp256k1_context *ctx, secp256k1_ecdsa_recoverable_signature *sig, const unsigned char *msghash32, const unsigned char *seckey, secp256k1_nonce_function noncefp, const void *ndata) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3) SECP256K1_ARG_NONNULL(4)
Create a recoverable ECDSA signature.
Definition main_impl.h:123
secp256k1_ecdsa_recoverable_signature_convert
SECP256K1_API int secp256k1_ecdsa_recoverable_signature_convert(const secp256k1_context *ctx, secp256k1_ecdsa_signature *sig, const secp256k1_ecdsa_recoverable_signature *sigin) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3)
Convert a recoverable signature into a normal signature.
Definition main_impl.h:74
secp256k1_ecdsa_recover
SECP256K1_API SECP256K1_WARN_UNUSED_RESULT int secp256k1_ecdsa_recover(const secp256k1_context *ctx, secp256k1_pubkey *pubkey, const secp256k1_ecdsa_recoverable_signature *sig, const unsigned char *msghash32) SECP256K1_ARG_NONNULL(1) SECP256K1_ARG_NONNULL(2) SECP256K1_ARG_NONNULL(3) SECP256K1_ARG_NONNULL(4)
Recover an ECDSA public key from a signature.
Definition main_impl.h:137
secp256k1_ecdsa_recoverable_signature
Opaque data structure that holds a parsed ECDSA signature, supporting pubkey recovery.
Definition secp256k1_recovery.h:24
secp256k1_ecdsa_signature
Opaque data structure that holds a parsed ECDSA signature.
Definition secp256k1.h:74
secp256k1_pubkey
Opaque data structure that holds a parsed and valid public key.
Definition secp256k1.h:61
secp256k1_scalar
A scalar modulo the group order of the secp256k1 curve.
Definition scalar_4x64.h:13
tf_test_entry
Definition unit_test.h:51
testrand_bits
static SECP256K1_INLINE uint64_t testrand_bits(int bits)
Generate a pseudorandom number in the range [0..2**bits-1].
testrand_int
static uint32_t testrand_int(uint32_t range)
Generate a pseudorandom number in the range [0..range-1].
CHECK_ILLEGAL
#define CHECK_ILLEGAL(ctx, expr)
Definition tests.c:79
CTX
static secp256k1_context * CTX
Definition tests.c:42
STATIC_CTX
static secp256k1_context * STATIC_CTX
Definition tests.c:43
testutil_random_scalar_order_test
static void testutil_random_scalar_order_test(secp256k1_scalar *num)
Definition testutil.h:120
unit_test.h
REPEAT_TEST_MULT
#define REPEAT_TEST_MULT(fn, multiplier)
Definition unit_test.h:35
CASE1
#define CASE1(name)
Definition unit_test.h:25
REPEAT_TEST
#define REPEAT_TEST(fn)
Definition unit_test.h:34
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