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67 lines
2.9 KiB
67 lines
2.9 KiB
// Copyright (c) 2009-2010 Satoshi Nakamoto |
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// Copyright (c) 2009-2014 The Bitcoin Core 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 BITCOIN_SCRIPT_SIGN_H |
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#define BITCOIN_SCRIPT_SIGN_H |
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#include "script/interpreter.h" |
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class CKeyID; |
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class CKeyStore; |
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class CScript; |
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class CTransaction; |
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struct CMutableTransaction; |
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/** Virtual base class for signature creators. */ |
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class BaseSignatureCreator { |
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protected: |
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const CKeyStore* keystore; |
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public: |
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BaseSignatureCreator(const CKeyStore* keystoreIn) : keystore(keystoreIn) {} |
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const CKeyStore& KeyStore() const { return *keystore; }; |
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virtual ~BaseSignatureCreator() {} |
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virtual const BaseSignatureChecker& Checker() const =0; |
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/** Create a singular (non-script) signature. */ |
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virtual bool CreateSig(std::vector<unsigned char>& vchSig, const CKeyID& keyid, const CScript& scriptCode) const =0; |
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}; |
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/** A signature creator for transactions. */ |
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class TransactionSignatureCreator : public BaseSignatureCreator { |
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const CTransaction* txTo; |
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unsigned int nIn; |
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int nHashType; |
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const TransactionSignatureChecker checker; |
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public: |
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TransactionSignatureCreator(const CKeyStore* keystoreIn, const CTransaction* txToIn, unsigned int nInIn, int nHashTypeIn=SIGHASH_ALL); |
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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) const; |
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}; |
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/** A signature creator that just produces 72-byte empty signatyres. */ |
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class DummySignatureCreator : public BaseSignatureCreator { |
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public: |
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DummySignatureCreator(const CKeyStore* keystoreIn) : BaseSignatureCreator(keystoreIn) {} |
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const BaseSignatureChecker& Checker() const; |
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bool CreateSig(std::vector<unsigned char>& vchSig, const CKeyID& keyid, const CScript& scriptCode) const; |
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}; |
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/** Produce a script signature using a generic signature creator. */ |
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bool ProduceSignature(const BaseSignatureCreator& creator, const CScript& scriptPubKey, CScript& scriptSig); |
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/** Produce a script signature for a transaction. */ |
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bool SignSignature(const CKeyStore& keystore, const CScript& fromPubKey, CMutableTransaction& txTo, unsigned int nIn, int nHashType=SIGHASH_ALL); |
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bool SignSignature(const CKeyStore& keystore, const CTransaction& txFrom, CMutableTransaction& txTo, unsigned int nIn, int nHashType=SIGHASH_ALL); |
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/** Combine two script signatures using a generic signature checker, intelligently, possibly with OP_0 placeholders. */ |
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CScript CombineSignatures(const CScript& scriptPubKey, const BaseSignatureChecker& checker, const CScript& scriptSig1, const CScript& scriptSig2); |
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/** Combine two script signatures on transactions. */ |
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CScript CombineSignatures(const CScript& scriptPubKey, const CTransaction& txTo, unsigned int nIn, const CScript& scriptSig1, const CScript& scriptSig2); |
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#endif // BITCOIN_SCRIPT_SIGN_H
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