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// Copyright (c) 2012-2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <key.h>
#include <key_io.h>
#include <test/util/setup_common.h>
#include <uint256.h>
#include <util/strencodings.h>
#include <util/string.h>
#include <util/system.h>
#include <string>
#include <vector>
#include <boost/test/unit_test.hpp>
static const std::string strSecret1 = "5HxWvvfubhXpYYpS3tJkw6fq9jE9j18THftkZjHHfmFiWtmAbrj";
static const std::string strSecret2 = "5KC4ejrDjv152FGwP386VD1i2NYc5KkfSMyv1nGy1VGDxGHqVY3";
static const std::string strSecret1C = "Kwr371tjA9u2rFSMZjTNun2PXXP3WPZu2afRHTcta6KxEUdm1vEw";
static const std::string strSecret2C = "L3Hq7a8FEQwJkW1M2GNKDW28546Vp5miewcCzSqUD9kCAXrJdS3g";
static const std::string addr1 = "1QFqqMUD55ZV3PJEJZtaKCsQmjLT6JkjvJ";
static const std::string addr2 = "1F5y5E5FMc5YzdJtB9hLaUe43GDxEKXENJ";
static const std::string addr1C = "1NoJrossxPBKfCHuJXT4HadJrXRE9Fxiqs";
static const std::string addr2C = "1CRj2HyM1CXWzHAXLQtiGLyggNT9WQqsDs";
static const std::string strAddressBad = "1HV9Lc3sNHZxwj4Zk6fB38tEmBryq2cBiF";
BOOST_FIXTURE_TEST_SUITE(key_tests, BasicTestingSetup)
BOOST_AUTO_TEST_CASE(key_test1)
{
CKey key1 = DecodeSecret(strSecret1);
BOOST_CHECK(key1.IsValid() && !key1.IsCompressed());
CKey key2 = DecodeSecret(strSecret2);
BOOST_CHECK(key2.IsValid() && !key2.IsCompressed());
CKey key1C = DecodeSecret(strSecret1C);
BOOST_CHECK(key1C.IsValid() && key1C.IsCompressed());
CKey key2C = DecodeSecret(strSecret2C);
BOOST_CHECK(key2C.IsValid() && key2C.IsCompressed());
CKey bad_key = DecodeSecret(strAddressBad);
BOOST_CHECK(!bad_key.IsValid());
CPubKey pubkey1 = key1. GetPubKey();
CPubKey pubkey2 = key2. GetPubKey();
CPubKey pubkey1C = key1C.GetPubKey();
CPubKey pubkey2C = key2C.GetPubKey();
BOOST_CHECK(key1.VerifyPubKey(pubkey1));
BOOST_CHECK(!key1.VerifyPubKey(pubkey1C));
BOOST_CHECK(!key1.VerifyPubKey(pubkey2));
BOOST_CHECK(!key1.VerifyPubKey(pubkey2C));
BOOST_CHECK(!key1C.VerifyPubKey(pubkey1));
BOOST_CHECK(key1C.VerifyPubKey(pubkey1C));
BOOST_CHECK(!key1C.VerifyPubKey(pubkey2));
BOOST_CHECK(!key1C.VerifyPubKey(pubkey2C));
BOOST_CHECK(!key2.VerifyPubKey(pubkey1));
BOOST_CHECK(!key2.VerifyPubKey(pubkey1C));
BOOST_CHECK(key2.VerifyPubKey(pubkey2));
BOOST_CHECK(!key2.VerifyPubKey(pubkey2C));
BOOST_CHECK(!key2C.VerifyPubKey(pubkey1));
BOOST_CHECK(!key2C.VerifyPubKey(pubkey1C));
BOOST_CHECK(!key2C.VerifyPubKey(pubkey2));
BOOST_CHECK(key2C.VerifyPubKey(pubkey2C));
BOOST_CHECK(DecodeDestination(addr1) == CTxDestination(PKHash(pubkey1)));
BOOST_CHECK(DecodeDestination(addr2) == CTxDestination(PKHash(pubkey2)));
BOOST_CHECK(DecodeDestination(addr1C) == CTxDestination(PKHash(pubkey1C)));
BOOST_CHECK(DecodeDestination(addr2C) == CTxDestination(PKHash(pubkey2C)));
for (int n=0; n<16; n++)
{
std::string strMsg = strprintf("Very secret message %i: 11", n);
uint256 hashMsg = Hash(strMsg.begin(), strMsg.end());
// normal signatures
std::vector<unsigned char> sign1, sign2, sign1C, sign2C;
BOOST_CHECK(key1.Sign (hashMsg, sign1));
BOOST_CHECK(key2.Sign (hashMsg, sign2));
BOOST_CHECK(key1C.Sign(hashMsg, sign1C));
BOOST_CHECK(key2C.Sign(hashMsg, sign2C));
BOOST_CHECK( pubkey1.Verify(hashMsg, sign1));
BOOST_CHECK(!pubkey1.Verify(hashMsg, sign2));
BOOST_CHECK( pubkey1.Verify(hashMsg, sign1C));
BOOST_CHECK(!pubkey1.Verify(hashMsg, sign2C));
BOOST_CHECK(!pubkey2.Verify(hashMsg, sign1));
BOOST_CHECK( pubkey2.Verify(hashMsg, sign2));
BOOST_CHECK(!pubkey2.Verify(hashMsg, sign1C));
BOOST_CHECK( pubkey2.Verify(hashMsg, sign2C));
BOOST_CHECK( pubkey1C.Verify(hashMsg, sign1));
BOOST_CHECK(!pubkey1C.Verify(hashMsg, sign2));
BOOST_CHECK( pubkey1C.Verify(hashMsg, sign1C));
BOOST_CHECK(!pubkey1C.Verify(hashMsg, sign2C));
BOOST_CHECK(!pubkey2C.Verify(hashMsg, sign1));
BOOST_CHECK( pubkey2C.Verify(hashMsg, sign2));
BOOST_CHECK(!pubkey2C.Verify(hashMsg, sign1C));
BOOST_CHECK( pubkey2C.Verify(hashMsg, sign2C));
// compact signatures (with key recovery)
std::vector<unsigned char> csign1, csign2, csign1C, csign2C;
BOOST_CHECK(key1.SignCompact (hashMsg, csign1));
BOOST_CHECK(key2.SignCompact (hashMsg, csign2));
BOOST_CHECK(key1C.SignCompact(hashMsg, csign1C));
BOOST_CHECK(key2C.SignCompact(hashMsg, csign2C));
CPubKey rkey1, rkey2, rkey1C, rkey2C;
BOOST_CHECK(rkey1.RecoverCompact (hashMsg, csign1));
BOOST_CHECK(rkey2.RecoverCompact (hashMsg, csign2));
BOOST_CHECK(rkey1C.RecoverCompact(hashMsg, csign1C));
BOOST_CHECK(rkey2C.RecoverCompact(hashMsg, csign2C));
BOOST_CHECK(rkey1 == pubkey1);
BOOST_CHECK(rkey2 == pubkey2);
BOOST_CHECK(rkey1C == pubkey1C);
BOOST_CHECK(rkey2C == pubkey2C);
}
// test deterministic signing
std::vector<unsigned char> detsig, detsigc;
std::string strMsg = "Very deterministic message";
uint256 hashMsg = Hash(strMsg.begin(), strMsg.end());
BOOST_CHECK(key1.Sign(hashMsg, detsig));
BOOST_CHECK(key1C.Sign(hashMsg, detsigc));
BOOST_CHECK(detsig == detsigc);
BOOST_CHECK(detsig == ParseHex("304402205dbbddda71772d95ce91cd2d14b592cfbc1dd0aabd6a394b6c2d377bbe59d31d022014ddda21494a4e221f0824f0b8b924c43fa43c0ad57dccdaa11f81a6bd4582f6"));
BOOST_CHECK(key2.Sign(hashMsg, detsig));
BOOST_CHECK(key2C.Sign(hashMsg, detsigc));
BOOST_CHECK(detsig == detsigc);
BOOST_CHECK(detsig == ParseHex("3044022052d8a32079c11e79db95af63bb9600c5b04f21a9ca33dc129c2bfa8ac9dc1cd5022061d8ae5e0f6c1a16bde3719c64c2fd70e404b6428ab9a69566962e8771b5944d"));
BOOST_CHECK(key1.SignCompact(hashMsg, detsig));
BOOST_CHECK(key1C.SignCompact(hashMsg, detsigc));
BOOST_CHECK(detsig == ParseHex("1c5dbbddda71772d95ce91cd2d14b592cfbc1dd0aabd6a394b6c2d377bbe59d31d14ddda21494a4e221f0824f0b8b924c43fa43c0ad57dccdaa11f81a6bd4582f6"));
BOOST_CHECK(detsigc == ParseHex("205dbbddda71772d95ce91cd2d14b592cfbc1dd0aabd6a394b6c2d377bbe59d31d14ddda21494a4e221f0824f0b8b924c43fa43c0ad57dccdaa11f81a6bd4582f6"));
BOOST_CHECK(key2.SignCompact(hashMsg, detsig));
BOOST_CHECK(key2C.SignCompact(hashMsg, detsigc));
BOOST_CHECK(detsig == ParseHex("1c52d8a32079c11e79db95af63bb9600c5b04f21a9ca33dc129c2bfa8ac9dc1cd561d8ae5e0f6c1a16bde3719c64c2fd70e404b6428ab9a69566962e8771b5944d"));
BOOST_CHECK(detsigc == ParseHex("2052d8a32079c11e79db95af63bb9600c5b04f21a9ca33dc129c2bfa8ac9dc1cd561d8ae5e0f6c1a16bde3719c64c2fd70e404b6428ab9a69566962e8771b5944d"));
}
BOOST_AUTO_TEST_CASE(key_signature_tests)
{
// When entropy is specified, we should see at least one high R signature within 20 signatures
CKey key = DecodeSecret(strSecret1);
std::string msg = "A message to be signed";
uint256 msg_hash = Hash(msg.begin(), msg.end());
std::vector<unsigned char> sig;
bool found = false;
for (int i = 1; i <=20; ++i) {
sig.clear();
BOOST_CHECK(key.Sign(msg_hash, sig, false, i));
found = sig[3] == 0x21 && sig[4] == 0x00;
if (found) {
break;
}
}
BOOST_CHECK(found);
// When entropy is not specified, we should always see low R signatures that are less than 70 bytes in 256 tries
// We should see at least one signature that is less than 70 bytes.
found = true;
bool found_small = false;
for (int i = 0; i < 256; ++i) {
sig.clear();
std::string msg = "A message to be signed" + ToString(i);
msg_hash = Hash(msg.begin(), msg.end());
BOOST_CHECK(key.Sign(msg_hash, sig));
found = sig[3] == 0x20;
BOOST_CHECK(sig.size() <= 70);
found_small |= sig.size() < 70;
}
BOOST_CHECK(found);
BOOST_CHECK(found_small);
}
BOOST_AUTO_TEST_CASE(key_key_negation)
{
// create a dummy hash for signature comparison
unsigned char rnd[8];
std::string str = "Bitcoin key verification\n";
GetRandBytes(rnd, sizeof(rnd));
uint256 hash;
CHash256().Write((unsigned char*)str.data(), str.size()).Write(rnd, sizeof(rnd)).Finalize(hash.begin());
// import the static test key
CKey key = DecodeSecret(strSecret1C);
// create a signature
std::vector<unsigned char> vch_sig;
std::vector<unsigned char> vch_sig_cmp;
key.Sign(hash, vch_sig);
// negate the key twice
BOOST_CHECK(key.GetPubKey().data()[0] == 0x03);
key.Negate();
// after the first negation, the signature must be different
key.Sign(hash, vch_sig_cmp);
BOOST_CHECK(vch_sig_cmp != vch_sig);
BOOST_CHECK(key.GetPubKey().data()[0] == 0x02);
key.Negate();
// after the second negation, we should have the original key and thus the
// same signature
key.Sign(hash, vch_sig_cmp);
BOOST_CHECK(vch_sig_cmp == vch_sig);
BOOST_CHECK(key.GetPubKey().data()[0] == 0x03);
}
BOOST_AUTO_TEST_SUITE_END()
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