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64 lines
2.3 KiB
C++
64 lines
2.3 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2014 The Bitcoin developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef H_BITCOIN_SCRIPT_GENERIC
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#define H_BITCOIN_SCRIPT_GENERIC
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#include "hash.h"
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#include "script/interpreter.h"
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#include "script/sign.h"
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class SimpleSignatureChecker : public BaseSignatureChecker
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{
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public:
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uint256 hash;
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SimpleSignatureChecker(const uint256& hashIn) : hash(hashIn) {};
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bool CheckSig(const std::vector<unsigned char>& vchSig, const std::vector<unsigned char>& vchPubKey, const CScript& scriptCode, SigVersion sigversion) const
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{
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CPubKey pubkey(vchPubKey);
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if (!pubkey.IsValid())
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return false;
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if (vchSig.empty())
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return false;
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return pubkey.Verify(hash, vchSig);
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}
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};
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class SimpleSignatureCreator : public BaseSignatureCreator
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{
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SimpleSignatureChecker checker;
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public:
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SimpleSignatureCreator(const CKeyStore* keystoreIn, const uint256& hashIn) : BaseSignatureCreator(keystoreIn), checker(hashIn) {};
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const BaseSignatureChecker& Checker() const { return checker; }
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bool CreateSig(std::vector<unsigned char>& vchSig, const CKeyID& keyid, const CScript& scriptCode, SigVersion sigversion) const
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{
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CKey key;
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if (!keystore->GetKey(keyid, key))
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return false;
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return key.Sign(checker.hash, vchSig);
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}
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};
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template<typename T>
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bool GenericVerifyScript(const CScript& scriptSig, const CScript& scriptPubKey, unsigned int flags, const T& data)
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{
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return VerifyScript(scriptSig, scriptPubKey, NULL, flags, SimpleSignatureChecker(SerializeHash(data)));
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}
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template<typename T>
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bool GenericSignScript(const CKeyStore& keystore, const T& data, const CScript& fromPubKey, SignatureData& scriptSig)
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{
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return ProduceSignature(SimpleSignatureCreator(&keystore, SerializeHash(data)), fromPubKey, scriptSig);
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}
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template<typename T>
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SignatureData GenericCombineSignatures(const CScript& scriptPubKey, const T& data, const SignatureData& scriptSig1, const SignatureData& scriptSig2)
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{
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return CombineSignatures(scriptPubKey, SimpleSignatureChecker(SerializeHash(data)), scriptSig1, scriptSig2);
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}
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#endif // H_BITCOIN_SCRIPT_GENERIC
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