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#include <boost/assert.hpp>
#include <boost/assign/list_of.hpp>
#include <boost/assign/list_inserter.hpp>
#include <boost/assign/std/vector.hpp>
#include <boost/test/unit_test.hpp>
#include <boost/foreach.hpp>
#include <boost/tuple/tuple.hpp>
#include <openssl/ec.h>
#include <openssl/err.h>
#include "keystore.h"
#include "main.h"
#include "script.h"
#include "wallet.h"
using namespace std;
using namespace boost::assign;
typedef vector<unsigned char> valtype;
extern uint256 SignatureHash(CScript scriptCode, const CTransaction& txTo, unsigned int nIn, int nHashType);
extern bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const CTransaction& txTo, unsigned int nIn, int& nSigOpCount,
int nHashType, bool fStrictOpEval);
BOOST_AUTO_TEST_SUITE(multisig_tests)
CScript
sign_multisig(CScript scriptPubKey, vector<CKey> keys, CTransaction transaction, int whichIn)
{
uint256 hash = SignatureHash(scriptPubKey, transaction, whichIn, SIGHASH_ALL);
CScript result;
result << OP_0; // CHECKMULTISIG bug workaround
BOOST_FOREACH(CKey key, keys)
{
vector<unsigned char> vchSig;
BOOST_CHECK(key.Sign(hash, vchSig));
vchSig.push_back((unsigned char)SIGHASH_ALL);
result << vchSig;
}
return result;
}
BOOST_AUTO_TEST_CASE(multisig_verify)
{
CKey key[4];
for (int i = 0; i < 4; i++)
key[i].MakeNewKey();
CScript a_and_b;
a_and_b << OP_2 << key[0].GetPubKey() << key[1].GetPubKey() << OP_2 << OP_CHECKMULTISIG;
CScript a_or_b;
a_or_b << OP_1 << key[0].GetPubKey() << key[1].GetPubKey() << OP_2 << OP_CHECKMULTISIG;
CScript escrow;
escrow << OP_2 << key[0].GetPubKey() << key[1].GetPubKey() << key[2].GetPubKey() << OP_3 << OP_CHECKMULTISIG;
CTransaction txFrom; // Funding transaction
txFrom.vout.resize(3);
txFrom.vout[0].scriptPubKey = a_and_b;
txFrom.vout[1].scriptPubKey = a_or_b;
txFrom.vout[2].scriptPubKey = escrow;
CTransaction txTo[3]; // Spending transaction
for (int i = 0; i < 3; i++)
{
txTo[i].vin.resize(1);
txTo[i].vout.resize(1);
txTo[i].vin[0].prevout.n = i;
txTo[i].vin[0].prevout.hash = txFrom.GetHash();
txTo[i].vout[0].nValue = 1;
}
vector<CKey> keys;
CScript s;
int nUnused = 0;
// Test a AND b:
keys.clear();
keys += key[0],key[1]; // magic operator+= from boost.assign
s = sign_multisig(a_and_b, keys, txTo[0], 0);
BOOST_CHECK(VerifyScript(s, a_and_b, txTo[0], 0, nUnused, 0, true));
for (int i = 0; i < 4; i++)
{
keys.clear();
keys += key[i];
s = sign_multisig(a_and_b, keys, txTo[0], 0);
BOOST_CHECK_MESSAGE(!VerifyScript(s, a_and_b, txTo[0], 0, nUnused, 0, true), strprintf("a&b 1: %d", i));
keys.clear();
keys += key[1],key[i];
s = sign_multisig(a_and_b, keys, txTo[0], 0);
BOOST_CHECK_MESSAGE(!VerifyScript(s, a_and_b, txTo[0], 0, nUnused, 0, true), strprintf("a&b 2: %d", i));
}
// Test a OR b:
for (int i = 0; i < 4; i++)
{
keys.clear();
keys += key[i];
s = sign_multisig(a_or_b, keys, txTo[1], 0);
if (i == 0 || i == 1)
BOOST_CHECK_MESSAGE(VerifyScript(s, a_or_b, txTo[1], 0, nUnused, 0, true), strprintf("a|b: %d", i));
else
BOOST_CHECK_MESSAGE(!VerifyScript(s, a_or_b, txTo[1], 0, nUnused, 0, true), strprintf("a|b: %d", i));
}
s.clear();
s << OP_0 << OP_0;
BOOST_CHECK(!VerifyScript(s, a_or_b, txTo[1], 0, nUnused, 0, true));
s.clear();
s << OP_0 << OP_1;
BOOST_CHECK(!VerifyScript(s, a_or_b, txTo[1], 0, nUnused, 0, true));
for (int i = 0; i < 4; i++)
for (int j = 0; j < 4; j++)
{
keys.clear();
keys += key[i],key[j];
s = sign_multisig(escrow, keys, txTo[2], 0);
if (i < j && i < 3 && j < 3)
BOOST_CHECK_MESSAGE(VerifyScript(s, escrow, txTo[2], 0, nUnused, 0, true), strprintf("escrow 1: %d %d", i, j));
else
BOOST_CHECK_MESSAGE(!VerifyScript(s, escrow, txTo[2], 0, nUnused, 0, true), strprintf("escrow 2: %d %d", i, j));
}
}
BOOST_AUTO_TEST_CASE(multisig_IsStandard)
{
CKey key[4];
for (int i = 0; i < 4; i++)
key[i].MakeNewKey();
CScript a_and_b;
a_and_b << OP_2 << key[0].GetPubKey() << key[1].GetPubKey() << OP_2 << OP_CHECKMULTISIG;
BOOST_CHECK(::IsStandard(a_and_b));
CScript a_or_b;
a_or_b << OP_1 << key[0].GetPubKey() << key[1].GetPubKey() << OP_2 << OP_CHECKMULTISIG;
BOOST_CHECK(::IsStandard(a_or_b));
CScript escrow;
escrow << OP_2 << key[0].GetPubKey() << key[1].GetPubKey() << key[2].GetPubKey() << OP_3 << OP_CHECKMULTISIG;
BOOST_CHECK(::IsStandard(escrow));
CScript one_of_four;
one_of_four << OP_1 << key[0].GetPubKey() << key[1].GetPubKey() << key[2].GetPubKey() << key[3].GetPubKey() << OP_4 << OP_CHECKMULTISIG;
BOOST_CHECK(!::IsStandard(one_of_four));
CScript malformed[6];
malformed[0] << OP_3 << key[0].GetPubKey() << key[1].GetPubKey() << OP_2 << OP_CHECKMULTISIG;
malformed[1] << OP_2 << key[0].GetPubKey() << key[1].GetPubKey() << OP_3 << OP_CHECKMULTISIG;
malformed[2] << OP_0 << key[0].GetPubKey() << key[1].GetPubKey() << OP_2 << OP_CHECKMULTISIG;
malformed[3] << OP_1 << key[0].GetPubKey() << key[1].GetPubKey() << OP_0 << OP_CHECKMULTISIG;
malformed[4] << OP_1 << key[0].GetPubKey() << key[1].GetPubKey() << OP_CHECKMULTISIG;
malformed[5] << OP_1 << key[0].GetPubKey() << key[1].GetPubKey();
for (int i = 0; i < 6; i++)
BOOST_CHECK(!::IsStandard(malformed[i]));
}
BOOST_AUTO_TEST_CASE(multisig_Solver1)
{
// Tests Solver() that returns lists of keys that are
// required to satisfy a ScriptPubKey
//
// Also tests IsMine() and ExtractAddress()
//
// Note: ExtractAddress for the multisignature transactions
// always returns false for this release, even if you have
// one key that would satisfy an (a|b) or 2-of-3 keys needed
// to spend an escrow transaction.
//
CBasicKeyStore keystore, emptykeystore;
CKey key[3];
CBitcoinAddress keyaddr[3];
for (int i = 0; i < 3; i++)
{
key[i].MakeNewKey();
keystore.AddKey(key[i]);
keyaddr[i].SetPubKey(key[i].GetPubKey());
}
{
vector<valtype> solutions;
txnouttype whichType;
CScript s;
s << key[0].GetPubKey() << OP_CHECKSIG;
BOOST_CHECK(Solver(s, whichType, solutions));
BOOST_CHECK(solutions.size() == 1);
CBitcoinAddress addr;
BOOST_CHECK(ExtractAddress(s, &keystore, addr));
BOOST_CHECK(addr == keyaddr[0]);
BOOST_CHECK(IsMine(keystore, s));
BOOST_CHECK(!IsMine(emptykeystore, s));
}
{
vector<valtype> solutions;
txnouttype whichType;
CScript s;
s << OP_DUP << OP_HASH160 << Hash160(key[0].GetPubKey()) << OP_EQUALVERIFY << OP_CHECKSIG;
BOOST_CHECK(Solver(s, whichType, solutions));
BOOST_CHECK(solutions.size() == 1);
CBitcoinAddress addr;
BOOST_CHECK(ExtractAddress(s, &keystore, addr));
BOOST_CHECK(addr == keyaddr[0]);
BOOST_CHECK(IsMine(keystore, s));
BOOST_CHECK(!IsMine(emptykeystore, s));
}
{
vector<valtype> solutions;
txnouttype whichType;
CScript s;
s << OP_2 << key[0].GetPubKey() << key[1].GetPubKey() << OP_2 << OP_CHECKMULTISIG;
BOOST_CHECK(Solver(s, whichType, solutions));
BOOST_CHECK_EQUAL(solutions.size(), 4);
CBitcoinAddress addr;
BOOST_CHECK(!ExtractAddress(s, &keystore, addr));
BOOST_CHECK(IsMine(keystore, s));
BOOST_CHECK(!IsMine(emptykeystore, s));
}
{
vector<valtype> solutions;
txnouttype whichType;
CScript s;
s << OP_1 << key[0].GetPubKey() << key[1].GetPubKey() << OP_2 << OP_CHECKMULTISIG;
BOOST_CHECK(Solver(s, whichType, solutions));
BOOST_CHECK_EQUAL(solutions.size(), 4);
vector<CBitcoinAddress> addrs;
int nRequired;
BOOST_CHECK(ExtractAddresses(s, &keystore, whichType, addrs, nRequired));
BOOST_CHECK(addrs[0] == keyaddr[0]);
BOOST_CHECK(addrs[1] == keyaddr[1]);
BOOST_CHECK(nRequired = 1);
BOOST_CHECK(IsMine(keystore, s));
BOOST_CHECK(!IsMine(emptykeystore, s));
}
{
vector<valtype> solutions;
txnouttype whichType;
CScript s;
s << OP_2 << key[0].GetPubKey() << key[1].GetPubKey() << key[2].GetPubKey() << OP_3 << OP_CHECKMULTISIG;
BOOST_CHECK(Solver(s, whichType, solutions));
BOOST_CHECK(solutions.size() == 5);
}
}
BOOST_AUTO_TEST_CASE(multisig_Sign)
{
// Test SignSignature() (and therefore the version of Solver() that signs transactions)
CBasicKeyStore keystore;
CKey key[4];
for (int i = 0; i < 4; i++)
{
key[i].MakeNewKey();
keystore.AddKey(key[i]);
}
CScript a_and_b;
a_and_b << OP_2 << key[0].GetPubKey() << key[1].GetPubKey() << OP_2 << OP_CHECKMULTISIG;
CScript a_or_b;
a_or_b << OP_1 << key[0].GetPubKey() << key[1].GetPubKey() << OP_2 << OP_CHECKMULTISIG;
CScript escrow;
escrow << OP_2 << key[0].GetPubKey() << key[1].GetPubKey() << key[2].GetPubKey() << OP_3 << OP_CHECKMULTISIG;
CTransaction txFrom; // Funding transaction
txFrom.vout.resize(3);
txFrom.vout[0].scriptPubKey = a_and_b;
txFrom.vout[1].scriptPubKey = a_or_b;
txFrom.vout[2].scriptPubKey = escrow;
CTransaction txTo[3]; // Spending transaction
for (int i = 0; i < 3; i++)
{
txTo[i].vin.resize(1);
txTo[i].vout.resize(1);
txTo[i].vin[0].prevout.n = i;
txTo[i].vin[0].prevout.hash = txFrom.GetHash();
txTo[i].vout[0].nValue = 1;
}
for (int i = 0; i < 3; i++)
{
BOOST_CHECK_MESSAGE(SignSignature(keystore, txFrom, txTo[i], 0), strprintf("SignSignature %d", i));
}
}
BOOST_AUTO_TEST_SUITE_END()
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