Bitcoin Core  27.99.0
P2P Digital Currency
key_tests.cpp
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1 // Copyright (c) 2012-2022 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 
5 #include <key.h>
6 
7 #include <common/system.h>
8 #include <key_io.h>
9 #include <span.h>
10 #include <streams.h>
11 #include <test/util/random.h>
12 #include <test/util/setup_common.h>
13 #include <uint256.h>
14 #include <util/strencodings.h>
15 #include <util/string.h>
16 
17 #include <string>
18 #include <vector>
19 
20 #include <boost/test/unit_test.hpp>
21 
22 static const std::string strSecret1 = "5HxWvvfubhXpYYpS3tJkw6fq9jE9j18THftkZjHHfmFiWtmAbrj";
23 static const std::string strSecret2 = "5KC4ejrDjv152FGwP386VD1i2NYc5KkfSMyv1nGy1VGDxGHqVY3";
24 static const std::string strSecret1C = "Kwr371tjA9u2rFSMZjTNun2PXXP3WPZu2afRHTcta6KxEUdm1vEw";
25 static const std::string strSecret2C = "L3Hq7a8FEQwJkW1M2GNKDW28546Vp5miewcCzSqUD9kCAXrJdS3g";
26 static const std::string addr1 = "1QFqqMUD55ZV3PJEJZtaKCsQmjLT6JkjvJ";
27 static const std::string addr2 = "1F5y5E5FMc5YzdJtB9hLaUe43GDxEKXENJ";
28 static const std::string addr1C = "1NoJrossxPBKfCHuJXT4HadJrXRE9Fxiqs";
29 static const std::string addr2C = "1CRj2HyM1CXWzHAXLQtiGLyggNT9WQqsDs";
30 
31 static const std::string strAddressBad = "1HV9Lc3sNHZxwj4Zk6fB38tEmBryq2cBiF";
32 
33 
34 BOOST_FIXTURE_TEST_SUITE(key_tests, BasicTestingSetup)
35 
37 {
39  BOOST_CHECK(key1.IsValid() && !key1.IsCompressed());
41  BOOST_CHECK(key2.IsValid() && !key2.IsCompressed());
42  CKey key1C = DecodeSecret(strSecret1C);
43  BOOST_CHECK(key1C.IsValid() && key1C.IsCompressed());
44  CKey key2C = DecodeSecret(strSecret2C);
45  BOOST_CHECK(key2C.IsValid() && key2C.IsCompressed());
46  CKey bad_key = DecodeSecret(strAddressBad);
47  BOOST_CHECK(!bad_key.IsValid());
48 
49  CPubKey pubkey1 = key1. GetPubKey();
50  CPubKey pubkey2 = key2. GetPubKey();
51  CPubKey pubkey1C = key1C.GetPubKey();
52  CPubKey pubkey2C = key2C.GetPubKey();
53 
54  BOOST_CHECK(key1.VerifyPubKey(pubkey1));
55  BOOST_CHECK(!key1.VerifyPubKey(pubkey1C));
56  BOOST_CHECK(!key1.VerifyPubKey(pubkey2));
57  BOOST_CHECK(!key1.VerifyPubKey(pubkey2C));
58 
59  BOOST_CHECK(!key1C.VerifyPubKey(pubkey1));
60  BOOST_CHECK(key1C.VerifyPubKey(pubkey1C));
61  BOOST_CHECK(!key1C.VerifyPubKey(pubkey2));
62  BOOST_CHECK(!key1C.VerifyPubKey(pubkey2C));
63 
64  BOOST_CHECK(!key2.VerifyPubKey(pubkey1));
65  BOOST_CHECK(!key2.VerifyPubKey(pubkey1C));
66  BOOST_CHECK(key2.VerifyPubKey(pubkey2));
67  BOOST_CHECK(!key2.VerifyPubKey(pubkey2C));
68 
69  BOOST_CHECK(!key2C.VerifyPubKey(pubkey1));
70  BOOST_CHECK(!key2C.VerifyPubKey(pubkey1C));
71  BOOST_CHECK(!key2C.VerifyPubKey(pubkey2));
72  BOOST_CHECK(key2C.VerifyPubKey(pubkey2C));
73 
78 
79  for (int n=0; n<16; n++)
80  {
81  std::string strMsg = strprintf("Very secret message %i: 11", n);
82  uint256 hashMsg = Hash(strMsg);
83 
84  // normal signatures
85 
86  std::vector<unsigned char> sign1, sign2, sign1C, sign2C;
87 
88  BOOST_CHECK(key1.Sign (hashMsg, sign1));
89  BOOST_CHECK(key2.Sign (hashMsg, sign2));
90  BOOST_CHECK(key1C.Sign(hashMsg, sign1C));
91  BOOST_CHECK(key2C.Sign(hashMsg, sign2C));
92 
93  BOOST_CHECK( pubkey1.Verify(hashMsg, sign1));
94  BOOST_CHECK(!pubkey1.Verify(hashMsg, sign2));
95  BOOST_CHECK( pubkey1.Verify(hashMsg, sign1C));
96  BOOST_CHECK(!pubkey1.Verify(hashMsg, sign2C));
97 
98  BOOST_CHECK(!pubkey2.Verify(hashMsg, sign1));
99  BOOST_CHECK( pubkey2.Verify(hashMsg, sign2));
100  BOOST_CHECK(!pubkey2.Verify(hashMsg, sign1C));
101  BOOST_CHECK( pubkey2.Verify(hashMsg, sign2C));
102 
103  BOOST_CHECK( pubkey1C.Verify(hashMsg, sign1));
104  BOOST_CHECK(!pubkey1C.Verify(hashMsg, sign2));
105  BOOST_CHECK( pubkey1C.Verify(hashMsg, sign1C));
106  BOOST_CHECK(!pubkey1C.Verify(hashMsg, sign2C));
107 
108  BOOST_CHECK(!pubkey2C.Verify(hashMsg, sign1));
109  BOOST_CHECK( pubkey2C.Verify(hashMsg, sign2));
110  BOOST_CHECK(!pubkey2C.Verify(hashMsg, sign1C));
111  BOOST_CHECK( pubkey2C.Verify(hashMsg, sign2C));
112 
113  // compact signatures (with key recovery)
114 
115  std::vector<unsigned char> csign1, csign2, csign1C, csign2C;
116 
117  BOOST_CHECK(key1.SignCompact (hashMsg, csign1));
118  BOOST_CHECK(key2.SignCompact (hashMsg, csign2));
119  BOOST_CHECK(key1C.SignCompact(hashMsg, csign1C));
120  BOOST_CHECK(key2C.SignCompact(hashMsg, csign2C));
121 
122  CPubKey rkey1, rkey2, rkey1C, rkey2C;
123 
124  BOOST_CHECK(rkey1.RecoverCompact (hashMsg, csign1));
125  BOOST_CHECK(rkey2.RecoverCompact (hashMsg, csign2));
126  BOOST_CHECK(rkey1C.RecoverCompact(hashMsg, csign1C));
127  BOOST_CHECK(rkey2C.RecoverCompact(hashMsg, csign2C));
128 
129  BOOST_CHECK(rkey1 == pubkey1);
130  BOOST_CHECK(rkey2 == pubkey2);
131  BOOST_CHECK(rkey1C == pubkey1C);
132  BOOST_CHECK(rkey2C == pubkey2C);
133  }
134 
135  // test deterministic signing
136 
137  std::vector<unsigned char> detsig, detsigc;
138  std::string strMsg = "Very deterministic message";
139  uint256 hashMsg = Hash(strMsg);
140  BOOST_CHECK(key1.Sign(hashMsg, detsig));
141  BOOST_CHECK(key1C.Sign(hashMsg, detsigc));
142  BOOST_CHECK(detsig == detsigc);
143  BOOST_CHECK(detsig == ParseHex("304402205dbbddda71772d95ce91cd2d14b592cfbc1dd0aabd6a394b6c2d377bbe59d31d022014ddda21494a4e221f0824f0b8b924c43fa43c0ad57dccdaa11f81a6bd4582f6"));
144  BOOST_CHECK(key2.Sign(hashMsg, detsig));
145  BOOST_CHECK(key2C.Sign(hashMsg, detsigc));
146  BOOST_CHECK(detsig == detsigc);
147  BOOST_CHECK(detsig == ParseHex("3044022052d8a32079c11e79db95af63bb9600c5b04f21a9ca33dc129c2bfa8ac9dc1cd5022061d8ae5e0f6c1a16bde3719c64c2fd70e404b6428ab9a69566962e8771b5944d"));
148  BOOST_CHECK(key1.SignCompact(hashMsg, detsig));
149  BOOST_CHECK(key1C.SignCompact(hashMsg, detsigc));
150  BOOST_CHECK(detsig == ParseHex("1c5dbbddda71772d95ce91cd2d14b592cfbc1dd0aabd6a394b6c2d377bbe59d31d14ddda21494a4e221f0824f0b8b924c43fa43c0ad57dccdaa11f81a6bd4582f6"));
151  BOOST_CHECK(detsigc == ParseHex("205dbbddda71772d95ce91cd2d14b592cfbc1dd0aabd6a394b6c2d377bbe59d31d14ddda21494a4e221f0824f0b8b924c43fa43c0ad57dccdaa11f81a6bd4582f6"));
152  BOOST_CHECK(key2.SignCompact(hashMsg, detsig));
153  BOOST_CHECK(key2C.SignCompact(hashMsg, detsigc));
154  BOOST_CHECK(detsig == ParseHex("1c52d8a32079c11e79db95af63bb9600c5b04f21a9ca33dc129c2bfa8ac9dc1cd561d8ae5e0f6c1a16bde3719c64c2fd70e404b6428ab9a69566962e8771b5944d"));
155  BOOST_CHECK(detsigc == ParseHex("2052d8a32079c11e79db95af63bb9600c5b04f21a9ca33dc129c2bfa8ac9dc1cd561d8ae5e0f6c1a16bde3719c64c2fd70e404b6428ab9a69566962e8771b5944d"));
156 }
157 
158 BOOST_AUTO_TEST_CASE(key_signature_tests)
159 {
160  // When entropy is specified, we should see at least one high R signature within 20 signatures
162  std::string msg = "A message to be signed";
163  uint256 msg_hash = Hash(msg);
164  std::vector<unsigned char> sig;
165  bool found = false;
166 
167  for (int i = 1; i <=20; ++i) {
168  sig.clear();
169  BOOST_CHECK(key.Sign(msg_hash, sig, false, i));
170  found = sig[3] == 0x21 && sig[4] == 0x00;
171  if (found) {
172  break;
173  }
174  }
175  BOOST_CHECK(found);
176 
177  // When entropy is not specified, we should always see low R signatures that are less than or equal to 70 bytes in 256 tries
178  // The low R signatures should always have the value of their "length of R" byte less than or equal to 32
179  // We should see at least one signature that is less than 70 bytes.
180  bool found_small = false;
181  bool found_big = false;
182  bool bad_sign = false;
183  for (int i = 0; i < 256; ++i) {
184  sig.clear();
185  std::string msg = "A message to be signed" + ToString(i);
186  msg_hash = Hash(msg);
187  if (!key.Sign(msg_hash, sig)) {
188  bad_sign = true;
189  break;
190  }
191  // sig.size() > 70 implies sig[3] > 32, because S is always low.
192  // But check both conditions anyway, just in case this implication is broken for some reason
193  if (sig[3] > 32 || sig.size() > 70) {
194  found_big = true;
195  break;
196  }
197  found_small |= sig.size() < 70;
198  }
199  BOOST_CHECK(!bad_sign);
200  BOOST_CHECK(!found_big);
201  BOOST_CHECK(found_small);
202 }
203 
204 static CPubKey UnserializePubkey(const std::vector<uint8_t>& data)
205 {
206  DataStream stream{};
207  stream << data;
208  CPubKey pubkey;
209  stream >> pubkey;
210  return pubkey;
211 }
212 
213 static unsigned int GetLen(unsigned char chHeader)
214 {
215  if (chHeader == 2 || chHeader == 3)
217  if (chHeader == 4 || chHeader == 6 || chHeader == 7)
218  return CPubKey::SIZE;
219  return 0;
220 }
221 
222 static void CmpSerializationPubkey(const CPubKey& pubkey)
223 {
224  DataStream stream{};
225  stream << pubkey;
226  CPubKey pubkey2;
227  stream >> pubkey2;
228  BOOST_CHECK(pubkey == pubkey2);
229 }
230 
231 BOOST_AUTO_TEST_CASE(pubkey_unserialize)
232 {
233  for (uint8_t i = 2; i <= 7; ++i) {
234  CPubKey key = UnserializePubkey({0x02});
235  BOOST_CHECK(!key.IsValid());
237  key = UnserializePubkey(std::vector<uint8_t>(GetLen(i), i));
239  if (i == 5) {
240  BOOST_CHECK(!key.IsValid());
241  } else {
242  BOOST_CHECK(key.IsValid());
243  }
244  }
245 }
246 
247 BOOST_AUTO_TEST_CASE(bip340_test_vectors)
248 {
249  static const std::vector<std::pair<std::array<std::string, 3>, bool>> VECTORS = {
250  {{"F9308A019258C31049344F85F89D5229B531C845836F99B08601F113BCE036F9", "0000000000000000000000000000000000000000000000000000000000000000", "E907831F80848D1069A5371B402410364BDF1C5F8307B0084C55F1CE2DCA821525F66A4A85EA8B71E482A74F382D2CE5EBEEE8FDB2172F477DF4900D310536C0"}, true},
251  {{"DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "6896BD60EEAE296DB48A229FF71DFE071BDE413E6D43F917DC8DCF8C78DE33418906D11AC976ABCCB20B091292BFF4EA897EFCB639EA871CFA95F6DE339E4B0A"}, true},
252  {{"DD308AFEC5777E13121FA72B9CC1B7CC0139715309B086C960E18FD969774EB8", "7E2D58D8B3BCDF1ABADEC7829054F90DDA9805AAB56C77333024B9D0A508B75C", "5831AAEED7B44BB74E5EAB94BA9D4294C49BCF2A60728D8B4C200F50DD313C1BAB745879A5AD954A72C45A91C3A51D3C7ADEA98D82F8481E0E1E03674A6F3FB7"}, true},
253  {{"25D1DFF95105F5253C4022F628A996AD3A0D95FBF21D468A1B33F8C160D8F517", "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", "7EB0509757E246F19449885651611CB965ECC1A187DD51B64FDA1EDC9637D5EC97582B9CB13DB3933705B32BA982AF5AF25FD78881EBB32771FC5922EFC66EA3"}, true},
254  {{"D69C3509BB99E412E68B0FE8544E72837DFA30746D8BE2AA65975F29D22DC7B9", "4DF3C3F68FCC83B27E9D42C90431A72499F17875C81A599B566C9889B9696703", "00000000000000000000003B78CE563F89A0ED9414F5AA28AD0D96D6795F9C6376AFB1548AF603B3EB45C9F8207DEE1060CB71C04E80F593060B07D28308D7F4"}, true},
255  {{"EEFDEA4CDB677750A420FEE807EACF21EB9898AE79B9768766E4FAA04A2D4A34", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "6CFF5C3BA86C69EA4B7376F31A9BCB4F74C1976089B2D9963DA2E5543E17776969E89B4C5564D00349106B8497785DD7D1D713A8AE82B32FA79D5F7FC407D39B"}, false},
256  {{"DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "FFF97BD5755EEEA420453A14355235D382F6472F8568A18B2F057A14602975563CC27944640AC607CD107AE10923D9EF7A73C643E166BE5EBEAFA34B1AC553E2"}, false},
257  {{"DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "1FA62E331EDBC21C394792D2AB1100A7B432B013DF3F6FF4F99FCB33E0E1515F28890B3EDB6E7189B630448B515CE4F8622A954CFE545735AAEA5134FCCDB2BD"}, false},
258  {{"DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "6CFF5C3BA86C69EA4B7376F31A9BCB4F74C1976089B2D9963DA2E5543E177769961764B3AA9B2FFCB6EF947B6887A226E8D7C93E00C5ED0C1834FF0D0C2E6DA6"}, false},
259  {{"DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "0000000000000000000000000000000000000000000000000000000000000000123DDA8328AF9C23A94C1FEECFD123BA4FB73476F0D594DCB65C6425BD186051"}, false},
260  {{"DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "00000000000000000000000000000000000000000000000000000000000000017615FBAF5AE28864013C099742DEADB4DBA87F11AC6754F93780D5A1837CF197"}, false},
261  {{"DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "4A298DACAE57395A15D0795DDBFD1DCB564DA82B0F269BC70A74F8220429BA1D69E89B4C5564D00349106B8497785DD7D1D713A8AE82B32FA79D5F7FC407D39B"}, false},
262  {{"DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F69E89B4C5564D00349106B8497785DD7D1D713A8AE82B32FA79D5F7FC407D39B"}, false},
263  {{"DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "6CFF5C3BA86C69EA4B7376F31A9BCB4F74C1976089B2D9963DA2E5543E177769FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141"}, false},
264  {{"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC30", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "6CFF5C3BA86C69EA4B7376F31A9BCB4F74C1976089B2D9963DA2E5543E17776969E89B4C5564D00349106B8497785DD7D1D713A8AE82B32FA79D5F7FC407D39B"}, false}
265  };
266 
267  for (const auto& test : VECTORS) {
268  auto pubkey = ParseHex(test.first[0]);
269  auto msg = ParseHex(test.first[1]);
270  auto sig = ParseHex(test.first[2]);
271  BOOST_CHECK_EQUAL(XOnlyPubKey(pubkey).VerifySchnorr(uint256(msg), sig), test.second);
272  }
273 
274  static const std::vector<std::array<std::string, 5>> SIGN_VECTORS = {
275  {{"0000000000000000000000000000000000000000000000000000000000000003", "F9308A019258C31049344F85F89D5229B531C845836F99B08601F113BCE036F9", "0000000000000000000000000000000000000000000000000000000000000000", "0000000000000000000000000000000000000000000000000000000000000000", "E907831F80848D1069A5371B402410364BDF1C5F8307B0084C55F1CE2DCA821525F66A4A85EA8B71E482A74F382D2CE5EBEEE8FDB2172F477DF4900D310536C0"}},
276  {{"B7E151628AED2A6ABF7158809CF4F3C762E7160F38B4DA56A784D9045190CFEF", "DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "0000000000000000000000000000000000000000000000000000000000000001", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "6896BD60EEAE296DB48A229FF71DFE071BDE413E6D43F917DC8DCF8C78DE33418906D11AC976ABCCB20B091292BFF4EA897EFCB639EA871CFA95F6DE339E4B0A"}},
277  {{"C90FDAA22168C234C4C6628B80DC1CD129024E088A67CC74020BBEA63B14E5C9", "DD308AFEC5777E13121FA72B9CC1B7CC0139715309B086C960E18FD969774EB8", "C87AA53824B4D7AE2EB035A2B5BBBCCC080E76CDC6D1692C4B0B62D798E6D906", "7E2D58D8B3BCDF1ABADEC7829054F90DDA9805AAB56C77333024B9D0A508B75C", "5831AAEED7B44BB74E5EAB94BA9D4294C49BCF2A60728D8B4C200F50DD313C1BAB745879A5AD954A72C45A91C3A51D3C7ADEA98D82F8481E0E1E03674A6F3FB7"}},
278  {{"0B432B2677937381AEF05BB02A66ECD012773062CF3FA2549E44F58ED2401710", "25D1DFF95105F5253C4022F628A996AD3A0D95FBF21D468A1B33F8C160D8F517", "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", "7EB0509757E246F19449885651611CB965ECC1A187DD51B64FDA1EDC9637D5EC97582B9CB13DB3933705B32BA982AF5AF25FD78881EBB32771FC5922EFC66EA3"}},
279  };
280 
281  for (const auto& [sec_hex, pub_hex, aux_hex, msg_hex, sig_hex] : SIGN_VECTORS) {
282  auto sec = ParseHex(sec_hex);
283  auto pub = ParseHex(pub_hex);
284  uint256 aux256(ParseHex(aux_hex));
285  uint256 msg256(ParseHex(msg_hex));
286  auto sig = ParseHex(sig_hex);
287  unsigned char sig64[64];
288 
289  // Run the untweaked test vectors above, comparing with exact expected signature.
290  CKey key;
291  key.Set(sec.begin(), sec.end(), true);
292  XOnlyPubKey pubkey(key.GetPubKey());
293  BOOST_CHECK(std::equal(pubkey.begin(), pubkey.end(), pub.begin(), pub.end()));
294  bool ok = key.SignSchnorr(msg256, sig64, nullptr, aux256);
295  BOOST_CHECK(ok);
296  BOOST_CHECK(std::vector<unsigned char>(sig64, sig64 + 64) == sig);
297  // Verify those signatures for good measure.
298  BOOST_CHECK(pubkey.VerifySchnorr(msg256, sig64));
299 
300  // Do 10 iterations where we sign with a random Merkle root to tweak,
301  // and compare against the resulting tweaked keys, with random aux.
302  // In iteration i=0 we tweak with empty Merkle tree.
303  for (int i = 0; i < 10; ++i) {
304  uint256 merkle_root;
305  if (i) merkle_root = InsecureRand256();
306  auto tweaked = pubkey.CreateTapTweak(i ? &merkle_root : nullptr);
307  BOOST_CHECK(tweaked);
308  XOnlyPubKey tweaked_key = tweaked->first;
309  aux256 = InsecureRand256();
310  bool ok = key.SignSchnorr(msg256, sig64, &merkle_root, aux256);
311  BOOST_CHECK(ok);
312  BOOST_CHECK(tweaked_key.VerifySchnorr(msg256, sig64));
313  }
314  }
315 }
316 
317 BOOST_AUTO_TEST_CASE(key_ellswift)
318 {
319  for (const auto& secret : {strSecret1, strSecret2, strSecret1C, strSecret2C}) {
320  CKey key = DecodeSecret(secret);
321  BOOST_CHECK(key.IsValid());
322 
323  uint256 ent32 = InsecureRand256();
324  auto ellswift = key.EllSwiftCreate(AsBytes(Span{ent32}));
325 
326  CPubKey decoded_pubkey = ellswift.Decode();
327  if (!key.IsCompressed()) {
328  // The decoding constructor returns a compressed pubkey. If the
329  // original was uncompressed, we must decompress the decoded one
330  // to compare.
331  decoded_pubkey.Decompress();
332  }
333  BOOST_CHECK(key.GetPubKey() == decoded_pubkey);
334  }
335 }
336 
337 BOOST_AUTO_TEST_CASE(bip341_test_h)
338 {
339  std::vector<unsigned char> G_uncompressed = ParseHex("0479be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8");
340  HashWriter hw;
341  hw.write(MakeByteSpan(G_uncompressed));
342  XOnlyPubKey H{hw.GetSHA256()};
344 }
345 
std::variant< CNoDestination, PubKeyDestination, PKHash, ScriptHash, WitnessV0ScriptHash, WitnessV0KeyHash, WitnessV1Taproot, WitnessUnknown > CTxDestination
A txout script categorized into standard templates.
Definition: addresstype.h:131
An encapsulated private key.
Definition: key.h:33
bool SignSchnorr(const uint256 &hash, Span< unsigned char > sig, const uint256 *merkle_root, const uint256 &aux) const
Create a BIP-340 Schnorr signature, for the xonly-pubkey corresponding to *this, optionally tweaked b...
Definition: key.cpp:272
bool IsValid() const
Check whether this private key is valid.
Definition: key.h:119
bool Sign(const uint256 &hash, std::vector< unsigned char > &vchSig, bool grind=true, uint32_t test_case=0) const
Create a DER-serialized signature.
Definition: key.cpp:208
bool IsCompressed() const
Check whether the public key corresponding to this private key is (to be) compressed.
Definition: key.h:122
CPubKey GetPubKey() const
Compute the public key from a private key.
Definition: key.cpp:182
void Set(const T pbegin, const T pend, bool fCompressedIn)
Initialize using begin and end iterators to byte data.
Definition: key.h:99
bool VerifyPubKey(const CPubKey &vchPubKey) const
Verify thoroughly whether a private key and a public key match.
Definition: key.cpp:236
EllSwiftPubKey EllSwiftCreate(Span< const std::byte > entropy) const
Create an ellswift-encoded public key for this key, with specified entropy.
Definition: key.cpp:330
bool SignCompact(const uint256 &hash, std::vector< unsigned char > &vchSig) const
Create a compact signature (65 bytes), which allows reconstructing the used public key.
Definition: key.cpp:249
An encapsulated public key.
Definition: pubkey.h:34
bool RecoverCompact(const uint256 &hash, const std::vector< unsigned char > &vchSig)
Recover a public key from a compact signature.
Definition: pubkey.cpp:296
static constexpr unsigned int COMPRESSED_SIZE
Definition: pubkey.h:40
bool IsValid() const
Definition: pubkey.h:189
bool Decompress()
Turn this public key into an uncompressed public key.
Definition: pubkey.cpp:323
bool Verify(const uint256 &hash, const std::vector< unsigned char > &vchSig) const
Verify a DER signature (~72 bytes).
Definition: pubkey.cpp:279
static constexpr unsigned int SIZE
secp256k1:
Definition: pubkey.h:39
Double ended buffer combining vector and stream-like interfaces.
Definition: streams.h:147
A writer stream (for serialization) that computes a 256-bit hash.
Definition: hash.h:101
void write(Span< const std::byte > src)
Definition: hash.h:106
uint256 GetSHA256()
Compute the SHA256 hash of all data written to this object.
Definition: hash.h:126
A Span is an object that can refer to a contiguous sequence of objects.
Definition: span.h:98
std::optional< std::pair< XOnlyPubKey, bool > > CreateTapTweak(const uint256 *merkle_root) const
Construct a Taproot tweaked output point with this point as internal key.
Definition: pubkey.cpp:261
const unsigned char * begin() const
Definition: pubkey.h:295
bool VerifySchnorr(const uint256 &msg, Span< const unsigned char > sigbytes) const
Verify a Schnorr signature against this public key.
Definition: pubkey.cpp:232
static const XOnlyPubKey NUMS_H
Nothing Up My Sleeve point H Used as an internal key for provably disabling the key path spend see BI...
Definition: pubkey.h:239
const unsigned char * end() const
Definition: pubkey.h:296
256-bit opaque blob.
Definition: uint256.h:106
BOOST_AUTO_TEST_SUITE_END()
uint256 Hash(const T &in1)
Compute the 256-bit hash of an object.
Definition: hash.h:75
CTxDestination DecodeDestination(const std::string &str, std::string &error_msg, std::vector< int > *error_locations)
Definition: key_io.cpp:292
CKey DecodeSecret(const std::string &str)
Definition: key_io.cpp:209
static const std::string strSecret2
Definition: key_tests.cpp:23
static unsigned int GetLen(unsigned char chHeader)
Definition: key_tests.cpp:213
static const std::string addr1
Definition: key_tests.cpp:26
static const std::string strSecret2C
Definition: key_tests.cpp:25
static void CmpSerializationPubkey(const CPubKey &pubkey)
Definition: key_tests.cpp:222
static const std::string addr2C
Definition: key_tests.cpp:29
static CPubKey UnserializePubkey(const std::vector< uint8_t > &data)
Definition: key_tests.cpp:204
static const std::string addr1C
Definition: key_tests.cpp:28
static const std::string strSecret1
Definition: key_tests.cpp:22
static const std::string strSecret1C
Definition: key_tests.cpp:24
static const std::string addr2
Definition: key_tests.cpp:27
BOOST_AUTO_TEST_CASE(key_test1)
Definition: key_tests.cpp:36
static const std::string strAddressBad
Definition: key_tests.cpp:31
#define BOOST_CHECK_EQUAL(v1, v2)
Definition: object.cpp:18
#define BOOST_CHECK(expr)
Definition: object.cpp:17
static bool GetPubKey(const SigningProvider &provider, const SignatureData &sigdata, const CKeyID &address, CPubKey &pubkey)
Definition: sign.cpp:109
Span< const std::byte > MakeByteSpan(V &&v) noexcept
Definition: span.h:277
Span< const std::byte > AsBytes(Span< T > s) noexcept
Definition: span.h:266
std::vector< Byte > ParseHex(std::string_view hex_str)
Like TryParseHex, but returns an empty vector on invalid input.
Definition: strencodings.h:65
std::string ToString(const T &t)
Locale-independent version of std::to_string.
Definition: string.h:110
Basic testing setup.
Definition: setup_common.h:54
static uint256 InsecureRand256()
Definition: random.h:49
#define strprintf
Format arguments and return the string or write to given std::ostream (see tinyformat::format doc for...
Definition: tinyformat.h:1162