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@ -6,6 +6,9 @@
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#include "../wallet.h"
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using namespace std;
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extern uint256 SignatureHash(CScript scriptCode, const CTransaction& txTo, unsigned int nIn, int nHashType);
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extern bool VerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, const CTransaction& txTo, unsigned int nIn, int nHashType);
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extern bool VerifySignature(const CTransaction& txFrom, const CTransaction& txTo, unsigned int nIn, int nHashType);
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BOOST_AUTO_TEST_SUITE(script_tests)
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@ -34,4 +37,137 @@ BOOST_AUTO_TEST_CASE(script_PushData)
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BOOST_CHECK(pushdata4Stack == directStack);
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}
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CScript
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sign_multisig(CScript scriptPubKey, std::vector<CKey> keys, CTransaction transaction)
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{
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uint256 hash = SignatureHash(scriptPubKey, transaction, 0, SIGHASH_ALL);
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CScript result;
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//
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// NOTE: CHECKMULTISIG has an unfortunate bug; it requires
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// one extra item on the stack, before the signatures.
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// Putting OP_0 on the stack is the workaround;
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// fixing the bug would mean splitting the blockchain (old
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// clients would not accept new CHECKMULTISIG transactions,
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// and vice-versa)
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//
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result << OP_0;
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BOOST_FOREACH(CKey key, keys)
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{
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vector<unsigned char> vchSig;
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BOOST_CHECK(key.Sign(hash, vchSig));
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vchSig.push_back((unsigned char)SIGHASH_ALL);
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result << vchSig;
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}
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return result;
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}
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CScript
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sign_multisig(CScript scriptPubKey, CKey key, CTransaction transaction)
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{
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std::vector<CKey> keys;
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keys.push_back(key);
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return sign_multisig(scriptPubKey, keys, transaction);
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}
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BOOST_AUTO_TEST_CASE(script_CHECKMULTISIG12)
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{
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CKey key1, key2, key3;
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key1.MakeNewKey();
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key2.MakeNewKey();
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key3.MakeNewKey();
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CScript scriptPubKey12;
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scriptPubKey12 << OP_1 << key1.GetPubKey() << key2.GetPubKey() << OP_2 << OP_CHECKMULTISIG;
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CTransaction txFrom12;
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txFrom12.vout.resize(1);
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txFrom12.vout[0].scriptPubKey = scriptPubKey12;
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CTransaction txTo12;
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txTo12.vin.resize(1);
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txTo12.vout.resize(1);
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txTo12.vin[0].prevout.n = 0;
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txTo12.vin[0].prevout.hash = txFrom12.GetHash();
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txTo12.vout[0].nValue = 1;
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CScript goodsig1 = sign_multisig(scriptPubKey12, key1, txTo12);
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BOOST_CHECK(VerifyScript(goodsig1, scriptPubKey12, txTo12, 0, 0));
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txTo12.vout[0].nValue = 2;
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BOOST_CHECK(!VerifyScript(goodsig1, scriptPubKey12, txTo12, 0, 0));
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CScript goodsig2 = sign_multisig(scriptPubKey12, key2, txTo12);
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BOOST_CHECK(VerifyScript(goodsig2, scriptPubKey12, txTo12, 0, 0));
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CScript badsig1 = sign_multisig(scriptPubKey12, key3, txTo12);
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BOOST_CHECK(!VerifyScript(badsig1, scriptPubKey12, txTo12, 0, 0));
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}
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BOOST_AUTO_TEST_CASE(script_CHECKMULTISIG23)
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{
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CKey key1, key2, key3, key4;
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key1.MakeNewKey();
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key2.MakeNewKey();
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key3.MakeNewKey();
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key4.MakeNewKey();
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CScript scriptPubKey23;
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scriptPubKey23 << OP_2 << key1.GetPubKey() << key2.GetPubKey() << key3.GetPubKey() << OP_3 << OP_CHECKMULTISIG;
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CTransaction txFrom23;
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txFrom23.vout.resize(1);
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txFrom23.vout[0].scriptPubKey = scriptPubKey23;
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CTransaction txTo23;
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txTo23.vin.resize(1);
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txTo23.vout.resize(1);
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txTo23.vin[0].prevout.n = 0;
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txTo23.vin[0].prevout.hash = txFrom23.GetHash();
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txTo23.vout[0].nValue = 1;
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std::vector<CKey> keys;
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keys.push_back(key1); keys.push_back(key2);
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CScript goodsig1 = sign_multisig(scriptPubKey23, keys, txTo23);
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BOOST_CHECK(VerifyScript(goodsig1, scriptPubKey23, txTo23, 0, 0));
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keys.clear();
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keys.push_back(key1); keys.push_back(key3);
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CScript goodsig2 = sign_multisig(scriptPubKey23, keys, txTo23);
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BOOST_CHECK(VerifyScript(goodsig2, scriptPubKey23, txTo23, 0, 0));
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keys.clear();
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keys.push_back(key2); keys.push_back(key3);
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CScript goodsig3 = sign_multisig(scriptPubKey23, keys, txTo23);
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BOOST_CHECK(VerifyScript(goodsig3, scriptPubKey23, txTo23, 0, 0));
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keys.clear();
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keys.push_back(key2); keys.push_back(key2); // Can't re-use sig
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CScript badsig1 = sign_multisig(scriptPubKey23, keys, txTo23);
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BOOST_CHECK(!VerifyScript(badsig1, scriptPubKey23, txTo23, 0, 0));
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keys.clear();
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keys.push_back(key2); keys.push_back(key1); // sigs must be in correct order
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CScript badsig2 = sign_multisig(scriptPubKey23, keys, txTo23);
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BOOST_CHECK(!VerifyScript(badsig2, scriptPubKey23, txTo23, 0, 0));
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keys.clear();
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keys.push_back(key3); keys.push_back(key2); // sigs must be in correct order
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CScript badsig3 = sign_multisig(scriptPubKey23, keys, txTo23);
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BOOST_CHECK(!VerifyScript(badsig3, scriptPubKey23, txTo23, 0, 0));
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keys.clear();
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keys.push_back(key4); keys.push_back(key2); // sigs must match pubkeys
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CScript badsig4 = sign_multisig(scriptPubKey23, keys, txTo23);
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BOOST_CHECK(!VerifyScript(badsig4, scriptPubKey23, txTo23, 0, 0));
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keys.clear();
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keys.push_back(key1); keys.push_back(key4); // sigs must match pubkeys
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CScript badsig5 = sign_multisig(scriptPubKey23, keys, txTo23);
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BOOST_CHECK(!VerifyScript(badsig5, scriptPubKey23, txTo23, 0, 0));
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keys.clear(); // Must have signatures
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CScript badsig6 = sign_multisig(scriptPubKey23, keys, txTo23);
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BOOST_CHECK(!VerifyScript(badsig6, scriptPubKey23, txTo23, 0, 0));
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}
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BOOST_AUTO_TEST_SUITE_END()
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