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author | Pieter Wuille <pieter.wuille@gmail.com> | 2016-03-31 14:54:58 +0200 |
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committer | Pieter Wuille <pieter.wuille@gmail.com> | 2016-06-22 15:43:01 +0200 |
commit | 605e8473a7ddca13b24a4020c7bd630aa5d374e2 (patch) | |
tree | 8c425e851aa6c30d9edc8bccb60e731a3f053101 /src/script/sign.h | |
parent | 9757b57c25c67de611b8f5d0a19f409c2e8753a6 (diff) | |
download | bitcoin-605e8473a7ddca13b24a4020c7bd630aa5d374e2.tar.xz |
BIP143: Signing logic
Diffstat (limited to 'src/script/sign.h')
-rw-r--r-- | src/script/sign.h | 34 |
1 files changed, 25 insertions, 9 deletions
diff --git a/src/script/sign.h b/src/script/sign.h index f54511f7a6..6404b4523e 100644 --- a/src/script/sign.h +++ b/src/script/sign.h @@ -27,7 +27,7 @@ public: virtual const BaseSignatureChecker& Checker() const =0; /** Create a singular (non-script) signature. */ - virtual bool CreateSig(std::vector<unsigned char>& vchSig, const CKeyID& keyid, const CScript& scriptCode) const =0; + virtual bool CreateSig(std::vector<unsigned char>& vchSig, const CKeyID& keyid, const CScript& scriptCode, SigVersion sigversion) const =0; }; /** A signature creator for transactions. */ @@ -41,7 +41,14 @@ class TransactionSignatureCreator : public BaseSignatureCreator { public: TransactionSignatureCreator(const CKeyStore* keystoreIn, const CTransaction* txToIn, unsigned int nInIn, const CAmount& amountIn, int nHashTypeIn=SIGHASH_ALL); const BaseSignatureChecker& Checker() const { return checker; } - bool CreateSig(std::vector<unsigned char>& vchSig, const CKeyID& keyid, const CScript& scriptCode) const; + bool CreateSig(std::vector<unsigned char>& vchSig, const CKeyID& keyid, const CScript& scriptCode, SigVersion sigversion) const; +}; + +class MutableTransactionSignatureCreator : public TransactionSignatureCreator { + CTransaction tx; + +public: + MutableTransactionSignatureCreator(const CKeyStore* keystoreIn, const CMutableTransaction* txToIn, unsigned int nInIn, const CAmount& amount, int nHashTypeIn) : TransactionSignatureCreator(keystoreIn, &tx, nInIn, amount, nHashTypeIn), tx(*txToIn) {} }; /** A signature creator that just produces 72-byte empty signatyres. */ @@ -49,20 +56,29 @@ class DummySignatureCreator : public BaseSignatureCreator { public: DummySignatureCreator(const CKeyStore* keystoreIn) : BaseSignatureCreator(keystoreIn) {} const BaseSignatureChecker& Checker() const; - bool CreateSig(std::vector<unsigned char>& vchSig, const CKeyID& keyid, const CScript& scriptCode) const; + bool CreateSig(std::vector<unsigned char>& vchSig, const CKeyID& keyid, const CScript& scriptCode, SigVersion sigversion) const; +}; + +struct SignatureData { + CScript scriptSig; + CScriptWitness scriptWitness; + + SignatureData() {} + explicit SignatureData(const CScript& script) : scriptSig(script) {} }; /** Produce a script signature using a generic signature creator. */ -bool ProduceSignature(const BaseSignatureCreator& creator, const CScript& scriptPubKey, CScript& scriptSig); +bool ProduceSignature(const BaseSignatureCreator& creator, const CScript& scriptPubKey, SignatureData& sigdata); /** Produce a script signature for a transaction. */ -bool SignSignature(const CKeyStore& keystore, const CScript& fromPubKey, CMutableTransaction& txTo, unsigned int nIn, int nHashType=SIGHASH_ALL); -bool SignSignature(const CKeyStore& keystore, const CTransaction& txFrom, CMutableTransaction& txTo, unsigned int nIn, int nHashType=SIGHASH_ALL); +bool SignSignature(const CKeyStore &keystore, const CScript& fromPubKey, CMutableTransaction& txTo, unsigned int nIn, const CAmount& amount, int nHashType); +bool SignSignature(const CKeyStore& keystore, const CTransaction& txFrom, CMutableTransaction& txTo, unsigned int nIn, int nHashType); /** Combine two script signatures using a generic signature checker, intelligently, possibly with OP_0 placeholders. */ -CScript CombineSignatures(const CScript& scriptPubKey, const BaseSignatureChecker& checker, const CScript& scriptSig1, const CScript& scriptSig2); +SignatureData CombineSignatures(const CScript& scriptPubKey, const BaseSignatureChecker& checker, const SignatureData& scriptSig1, const SignatureData& scriptSig2); -/** Combine two script signatures on transactions. */ -CScript CombineSignatures(const CScript& scriptPubKey, const CTransaction& txTo, unsigned int nIn, const CAmount& amount, const CScript& scriptSig1, const CScript& scriptSig2); +/** Extract signature data from a transaction, and insert it. */ +SignatureData DataFromTransaction(const CMutableTransaction& tx, unsigned int nIn); +void UpdateTransaction(CMutableTransaction& tx, unsigned int nIn, const SignatureData& data); #endif // BITCOIN_SCRIPT_SIGN_H |