1 // Copyright (c) 2012-2020 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 <key_io.h>
8 #include <streams.h>
9 #include <test/util/setup_common.h>
10 #include <uint256.h>
11 #include <util/strencodings.h>
12 #include <util/string.h>
13 #include <util/system.h>
14
15 #include <string>
16 #include <vector>
17
18 #include <boost/test/unit_test.hpp>
19
20 static const std::string strSecret1 = "5HxWvvfubhXpYYpS3tJkw6fq9jE9j18THftkZjHHfmFiWtmAbrj";
21 static const std::string strSecret2 = "5KC4ejrDjv152FGwP386VD1i2NYc5KkfSMyv1nGy1VGDxGHqVY3";
22 static const std::string strSecret1C = "Kwr371tjA9u2rFSMZjTNun2PXXP3WPZu2afRHTcta6KxEUdm1vEw";
23 static const std::string strSecret2C = "L3Hq7a8FEQwJkW1M2GNKDW28546Vp5miewcCzSqUD9kCAXrJdS3g";
24 static const std::string addr1 = "1QFqqMUD55ZV3PJEJZtaKCsQmjLT6JkjvJ";
25 static const std::string addr2 = "1F5y5E5FMc5YzdJtB9hLaUe43GDxEKXENJ";
26 static const std::string addr1C = "1NoJrossxPBKfCHuJXT4HadJrXRE9Fxiqs";
27 static const std::string addr2C = "1CRj2HyM1CXWzHAXLQtiGLyggNT9WQqsDs";
28
29 static const std::string strAddressBad = "1HV9Lc3sNHZxwj4Zk6fB38tEmBryq2cBiF";
30
31
BOOST_FIXTURE_TEST_SUITE(key_tests,BasicTestingSetup)32 BOOST_FIXTURE_TEST_SUITE(key_tests, BasicTestingSetup)
33
34 BOOST_AUTO_TEST_CASE(key_test1)
35 {
36 CKey key1 = DecodeSecret(strSecret1);
37 BOOST_CHECK(key1.IsValid() && !key1.IsCompressed());
38 CKey key2 = DecodeSecret(strSecret2);
39 BOOST_CHECK(key2.IsValid() && !key2.IsCompressed());
40 CKey key1C = DecodeSecret(strSecret1C);
41 BOOST_CHECK(key1C.IsValid() && key1C.IsCompressed());
42 CKey key2C = DecodeSecret(strSecret2C);
43 BOOST_CHECK(key2C.IsValid() && key2C.IsCompressed());
44 CKey bad_key = DecodeSecret(strAddressBad);
45 BOOST_CHECK(!bad_key.IsValid());
46
47 CPubKey pubkey1 = key1. GetPubKey();
48 CPubKey pubkey2 = key2. GetPubKey();
49 CPubKey pubkey1C = key1C.GetPubKey();
50 CPubKey pubkey2C = key2C.GetPubKey();
51
52 BOOST_CHECK(key1.VerifyPubKey(pubkey1));
53 BOOST_CHECK(!key1.VerifyPubKey(pubkey1C));
54 BOOST_CHECK(!key1.VerifyPubKey(pubkey2));
55 BOOST_CHECK(!key1.VerifyPubKey(pubkey2C));
56
57 BOOST_CHECK(!key1C.VerifyPubKey(pubkey1));
58 BOOST_CHECK(key1C.VerifyPubKey(pubkey1C));
59 BOOST_CHECK(!key1C.VerifyPubKey(pubkey2));
60 BOOST_CHECK(!key1C.VerifyPubKey(pubkey2C));
61
62 BOOST_CHECK(!key2.VerifyPubKey(pubkey1));
63 BOOST_CHECK(!key2.VerifyPubKey(pubkey1C));
64 BOOST_CHECK(key2.VerifyPubKey(pubkey2));
65 BOOST_CHECK(!key2.VerifyPubKey(pubkey2C));
66
67 BOOST_CHECK(!key2C.VerifyPubKey(pubkey1));
68 BOOST_CHECK(!key2C.VerifyPubKey(pubkey1C));
69 BOOST_CHECK(!key2C.VerifyPubKey(pubkey2));
70 BOOST_CHECK(key2C.VerifyPubKey(pubkey2C));
71
72 BOOST_CHECK(DecodeDestination(addr1) == CTxDestination(PKHash(pubkey1)));
73 BOOST_CHECK(DecodeDestination(addr2) == CTxDestination(PKHash(pubkey2)));
74 BOOST_CHECK(DecodeDestination(addr1C) == CTxDestination(PKHash(pubkey1C)));
75 BOOST_CHECK(DecodeDestination(addr2C) == CTxDestination(PKHash(pubkey2C)));
76
77 for (int n=0; n<16; n++)
78 {
79 std::string strMsg = strprintf("Very secret message %i: 11", n);
80 uint256 hashMsg = Hash(strMsg);
81
82 // normal signatures
83
84 std::vector<unsigned char> sign1, sign2, sign1C, sign2C;
85
86 BOOST_CHECK(key1.Sign (hashMsg, sign1));
87 BOOST_CHECK(key2.Sign (hashMsg, sign2));
88 BOOST_CHECK(key1C.Sign(hashMsg, sign1C));
89 BOOST_CHECK(key2C.Sign(hashMsg, sign2C));
90
91 BOOST_CHECK( pubkey1.Verify(hashMsg, sign1));
92 BOOST_CHECK(!pubkey1.Verify(hashMsg, sign2));
93 BOOST_CHECK( pubkey1.Verify(hashMsg, sign1C));
94 BOOST_CHECK(!pubkey1.Verify(hashMsg, sign2C));
95
96 BOOST_CHECK(!pubkey2.Verify(hashMsg, sign1));
97 BOOST_CHECK( pubkey2.Verify(hashMsg, sign2));
98 BOOST_CHECK(!pubkey2.Verify(hashMsg, sign1C));
99 BOOST_CHECK( pubkey2.Verify(hashMsg, sign2C));
100
101 BOOST_CHECK( pubkey1C.Verify(hashMsg, sign1));
102 BOOST_CHECK(!pubkey1C.Verify(hashMsg, sign2));
103 BOOST_CHECK( pubkey1C.Verify(hashMsg, sign1C));
104 BOOST_CHECK(!pubkey1C.Verify(hashMsg, sign2C));
105
106 BOOST_CHECK(!pubkey2C.Verify(hashMsg, sign1));
107 BOOST_CHECK( pubkey2C.Verify(hashMsg, sign2));
108 BOOST_CHECK(!pubkey2C.Verify(hashMsg, sign1C));
109 BOOST_CHECK( pubkey2C.Verify(hashMsg, sign2C));
110
111 // compact signatures (with key recovery)
112
113 std::vector<unsigned char> csign1, csign2, csign1C, csign2C;
114
115 BOOST_CHECK(key1.SignCompact (hashMsg, csign1));
116 BOOST_CHECK(key2.SignCompact (hashMsg, csign2));
117 BOOST_CHECK(key1C.SignCompact(hashMsg, csign1C));
118 BOOST_CHECK(key2C.SignCompact(hashMsg, csign2C));
119
120 CPubKey rkey1, rkey2, rkey1C, rkey2C;
121
122 BOOST_CHECK(rkey1.RecoverCompact (hashMsg, csign1));
123 BOOST_CHECK(rkey2.RecoverCompact (hashMsg, csign2));
124 BOOST_CHECK(rkey1C.RecoverCompact(hashMsg, csign1C));
125 BOOST_CHECK(rkey2C.RecoverCompact(hashMsg, csign2C));
126
127 BOOST_CHECK(rkey1 == pubkey1);
128 BOOST_CHECK(rkey2 == pubkey2);
129 BOOST_CHECK(rkey1C == pubkey1C);
130 BOOST_CHECK(rkey2C == pubkey2C);
131 }
132
133 // test deterministic signing
134
135 std::vector<unsigned char> detsig, detsigc;
136 std::string strMsg = "Very deterministic message";
137 uint256 hashMsg = Hash(strMsg);
138 BOOST_CHECK(key1.Sign(hashMsg, detsig));
139 BOOST_CHECK(key1C.Sign(hashMsg, detsigc));
140 BOOST_CHECK(detsig == detsigc);
141 BOOST_CHECK(detsig == ParseHex("304402205dbbddda71772d95ce91cd2d14b592cfbc1dd0aabd6a394b6c2d377bbe59d31d022014ddda21494a4e221f0824f0b8b924c43fa43c0ad57dccdaa11f81a6bd4582f6"));
142 BOOST_CHECK(key2.Sign(hashMsg, detsig));
143 BOOST_CHECK(key2C.Sign(hashMsg, detsigc));
144 BOOST_CHECK(detsig == detsigc);
145 BOOST_CHECK(detsig == ParseHex("3044022052d8a32079c11e79db95af63bb9600c5b04f21a9ca33dc129c2bfa8ac9dc1cd5022061d8ae5e0f6c1a16bde3719c64c2fd70e404b6428ab9a69566962e8771b5944d"));
146 BOOST_CHECK(key1.SignCompact(hashMsg, detsig));
147 BOOST_CHECK(key1C.SignCompact(hashMsg, detsigc));
148 BOOST_CHECK(detsig == ParseHex("1c5dbbddda71772d95ce91cd2d14b592cfbc1dd0aabd6a394b6c2d377bbe59d31d14ddda21494a4e221f0824f0b8b924c43fa43c0ad57dccdaa11f81a6bd4582f6"));
149 BOOST_CHECK(detsigc == ParseHex("205dbbddda71772d95ce91cd2d14b592cfbc1dd0aabd6a394b6c2d377bbe59d31d14ddda21494a4e221f0824f0b8b924c43fa43c0ad57dccdaa11f81a6bd4582f6"));
150 BOOST_CHECK(key2.SignCompact(hashMsg, detsig));
151 BOOST_CHECK(key2C.SignCompact(hashMsg, detsigc));
152 BOOST_CHECK(detsig == ParseHex("1c52d8a32079c11e79db95af63bb9600c5b04f21a9ca33dc129c2bfa8ac9dc1cd561d8ae5e0f6c1a16bde3719c64c2fd70e404b6428ab9a69566962e8771b5944d"));
153 BOOST_CHECK(detsigc == ParseHex("2052d8a32079c11e79db95af63bb9600c5b04f21a9ca33dc129c2bfa8ac9dc1cd561d8ae5e0f6c1a16bde3719c64c2fd70e404b6428ab9a69566962e8771b5944d"));
154 }
155
BOOST_AUTO_TEST_CASE(key_signature_tests)156 BOOST_AUTO_TEST_CASE(key_signature_tests)
157 {
158 // When entropy is specified, we should see at least one high R signature within 20 signatures
159 CKey key = DecodeSecret(strSecret1);
160 std::string msg = "A message to be signed";
161 uint256 msg_hash = Hash(msg);
162 std::vector<unsigned char> sig;
163 bool found = false;
164
165 for (int i = 1; i <=20; ++i) {
166 sig.clear();
167 BOOST_CHECK(key.Sign(msg_hash, sig, false, i));
168 found = sig[3] == 0x21 && sig[4] == 0x00;
169 if (found) {
170 break;
171 }
172 }
173 BOOST_CHECK(found);
174
175 // When entropy is not specified, we should always see low R signatures that are less than 70 bytes in 256 tries
176 // We should see at least one signature that is less than 70 bytes.
177 found = true;
178 bool found_small = false;
179 for (int i = 0; i < 256; ++i) {
180 sig.clear();
181 std::string msg = "A message to be signed" + ToString(i);
182 msg_hash = Hash(msg);
183 BOOST_CHECK(key.Sign(msg_hash, sig));
184 found = sig[3] == 0x20;
185 BOOST_CHECK(sig.size() <= 70);
186 found_small |= sig.size() < 70;
187 }
188 BOOST_CHECK(found);
189 BOOST_CHECK(found_small);
190 }
191
BOOST_AUTO_TEST_CASE(key_key_negation)192 BOOST_AUTO_TEST_CASE(key_key_negation)
193 {
194 // create a dummy hash for signature comparison
195 unsigned char rnd[8];
196 std::string str = "Bitcoin key verification\n";
197 GetRandBytes(rnd, sizeof(rnd));
198 uint256 hash;
199 CHash256().Write(MakeUCharSpan(str)).Write(rnd).Finalize(hash);
200
201 // import the static test key
202 CKey key = DecodeSecret(strSecret1C);
203
204 // create a signature
205 std::vector<unsigned char> vch_sig;
206 std::vector<unsigned char> vch_sig_cmp;
207 key.Sign(hash, vch_sig);
208
209 // negate the key twice
210 BOOST_CHECK(key.GetPubKey().data()[0] == 0x03);
211 key.Negate();
212 // after the first negation, the signature must be different
213 key.Sign(hash, vch_sig_cmp);
214 BOOST_CHECK(vch_sig_cmp != vch_sig);
215 BOOST_CHECK(key.GetPubKey().data()[0] == 0x02);
216 key.Negate();
217 // after the second negation, we should have the original key and thus the
218 // same signature
219 key.Sign(hash, vch_sig_cmp);
220 BOOST_CHECK(vch_sig_cmp == vch_sig);
221 BOOST_CHECK(key.GetPubKey().data()[0] == 0x03);
222 }
223
UnserializePubkey(const std::vector<uint8_t> & data)224 static CPubKey UnserializePubkey(const std::vector<uint8_t>& data)
225 {
226 CDataStream stream{SER_NETWORK, INIT_PROTO_VERSION};
227 stream << data;
228 CPubKey pubkey;
229 stream >> pubkey;
230 return pubkey;
231 }
232
GetLen(unsigned char chHeader)233 static unsigned int GetLen(unsigned char chHeader)
234 {
235 if (chHeader == 2 || chHeader == 3)
236 return CPubKey::COMPRESSED_SIZE;
237 if (chHeader == 4 || chHeader == 6 || chHeader == 7)
238 return CPubKey::SIZE;
239 return 0;
240 }
241
CmpSerializationPubkey(const CPubKey & pubkey)242 static void CmpSerializationPubkey(const CPubKey& pubkey)
243 {
244 CDataStream stream{SER_NETWORK, INIT_PROTO_VERSION};
245 stream << pubkey;
246 CPubKey pubkey2;
247 stream >> pubkey2;
248 BOOST_CHECK(pubkey == pubkey2);
249 }
250
BOOST_AUTO_TEST_CASE(pubkey_unserialize)251 BOOST_AUTO_TEST_CASE(pubkey_unserialize)
252 {
253 for (uint8_t i = 2; i <= 7; ++i) {
254 CPubKey key = UnserializePubkey({0x02});
255 BOOST_CHECK(!key.IsValid());
256 CmpSerializationPubkey(key);
257 key = UnserializePubkey(std::vector<uint8_t>(GetLen(i), i));
258 CmpSerializationPubkey(key);
259 if (i == 5) {
260 BOOST_CHECK(!key.IsValid());
261 } else {
262 BOOST_CHECK(key.IsValid());
263 }
264 }
265 }
266
BOOST_AUTO_TEST_CASE(bip340_test_vectors)267 BOOST_AUTO_TEST_CASE(bip340_test_vectors)
268 {
269 static const std::vector<std::pair<std::array<std::string, 3>, bool>> VECTORS = {
270 {{"F9308A019258C31049344F85F89D5229B531C845836F99B08601F113BCE036F9", "0000000000000000000000000000000000000000000000000000000000000000", "E907831F80848D1069A5371B402410364BDF1C5F8307B0084C55F1CE2DCA821525F66A4A85EA8B71E482A74F382D2CE5EBEEE8FDB2172F477DF4900D310536C0"}, true},
271 {{"DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "6896BD60EEAE296DB48A229FF71DFE071BDE413E6D43F917DC8DCF8C78DE33418906D11AC976ABCCB20B091292BFF4EA897EFCB639EA871CFA95F6DE339E4B0A"}, true},
272 {{"DD308AFEC5777E13121FA72B9CC1B7CC0139715309B086C960E18FD969774EB8", "7E2D58D8B3BCDF1ABADEC7829054F90DDA9805AAB56C77333024B9D0A508B75C", "5831AAEED7B44BB74E5EAB94BA9D4294C49BCF2A60728D8B4C200F50DD313C1BAB745879A5AD954A72C45A91C3A51D3C7ADEA98D82F8481E0E1E03674A6F3FB7"}, true},
273 {{"25D1DFF95105F5253C4022F628A996AD3A0D95FBF21D468A1B33F8C160D8F517", "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", "7EB0509757E246F19449885651611CB965ECC1A187DD51B64FDA1EDC9637D5EC97582B9CB13DB3933705B32BA982AF5AF25FD78881EBB32771FC5922EFC66EA3"}, true},
274 {{"D69C3509BB99E412E68B0FE8544E72837DFA30746D8BE2AA65975F29D22DC7B9", "4DF3C3F68FCC83B27E9D42C90431A72499F17875C81A599B566C9889B9696703", "00000000000000000000003B78CE563F89A0ED9414F5AA28AD0D96D6795F9C6376AFB1548AF603B3EB45C9F8207DEE1060CB71C04E80F593060B07D28308D7F4"}, true},
275 {{"EEFDEA4CDB677750A420FEE807EACF21EB9898AE79B9768766E4FAA04A2D4A34", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "6CFF5C3BA86C69EA4B7376F31A9BCB4F74C1976089B2D9963DA2E5543E17776969E89B4C5564D00349106B8497785DD7D1D713A8AE82B32FA79D5F7FC407D39B"}, false},
276 {{"DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "FFF97BD5755EEEA420453A14355235D382F6472F8568A18B2F057A14602975563CC27944640AC607CD107AE10923D9EF7A73C643E166BE5EBEAFA34B1AC553E2"}, false},
277 {{"DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "1FA62E331EDBC21C394792D2AB1100A7B432B013DF3F6FF4F99FCB33E0E1515F28890B3EDB6E7189B630448B515CE4F8622A954CFE545735AAEA5134FCCDB2BD"}, false},
278 {{"DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "6CFF5C3BA86C69EA4B7376F31A9BCB4F74C1976089B2D9963DA2E5543E177769961764B3AA9B2FFCB6EF947B6887A226E8D7C93E00C5ED0C1834FF0D0C2E6DA6"}, false},
279 {{"DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "0000000000000000000000000000000000000000000000000000000000000000123DDA8328AF9C23A94C1FEECFD123BA4FB73476F0D594DCB65C6425BD186051"}, false},
280 {{"DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "00000000000000000000000000000000000000000000000000000000000000017615FBAF5AE28864013C099742DEADB4DBA87F11AC6754F93780D5A1837CF197"}, false},
281 {{"DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "4A298DACAE57395A15D0795DDBFD1DCB564DA82B0F269BC70A74F8220429BA1D69E89B4C5564D00349106B8497785DD7D1D713A8AE82B32FA79D5F7FC407D39B"}, false},
282 {{"DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F69E89B4C5564D00349106B8497785DD7D1D713A8AE82B32FA79D5F7FC407D39B"}, false},
283 {{"DFF1D77F2A671C5F36183726DB2341BE58FEAE1DA2DECED843240F7B502BA659", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "6CFF5C3BA86C69EA4B7376F31A9BCB4F74C1976089B2D9963DA2E5543E177769FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141"}, false},
284 {{"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC30", "243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89", "6CFF5C3BA86C69EA4B7376F31A9BCB4F74C1976089B2D9963DA2E5543E17776969E89B4C5564D00349106B8497785DD7D1D713A8AE82B32FA79D5F7FC407D39B"}, false}
285 };
286
287 for (const auto& test : VECTORS) {
288 auto pubkey = ParseHex(test.first[0]);
289 auto msg = ParseHex(test.first[1]);
290 auto sig = ParseHex(test.first[2]);
291 BOOST_CHECK_EQUAL(XOnlyPubKey(pubkey).VerifySchnorr(uint256(msg), sig), test.second);
292 }
293 }
294
295 BOOST_AUTO_TEST_SUITE_END()
296