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@ -52,23 +52,6 @@ bool IsDust(const CTxOut& txout, const CFeeRate& dustRelayFeeIn)
@@ -52,23 +52,6 @@ bool IsDust(const CTxOut& txout, const CFeeRate& dustRelayFeeIn)
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return (txout.nValue < GetDustThreshold(txout, dustRelayFeeIn)); |
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} |
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/**
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* Check transaction inputs to mitigate two |
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* potential denial-of-service attacks: |
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* |
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* 1. scriptSigs with extra data stuffed into them, |
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* not consumed by scriptPubKey (or P2SH script) |
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* 2. P2SH scripts with a crazy number of expensive |
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* CHECKSIG/CHECKMULTISIG operations |
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* |
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* Why bother? To avoid denial-of-service attacks; an attacker |
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* can submit a standard HASH... OP_EQUAL transaction, |
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* which will get accepted into blocks. The redemption |
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* script can be anything; an attacker could use a very |
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* expensive-to-check-upon-redemption script like: |
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* DUP CHECKSIG DROP ... repeated 100 times... OP_1 |
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*/ |
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bool IsStandard(const CScript& scriptPubKey, txnouttype& whichType, const bool witnessEnabled) |
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{ |
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std::vector<std::vector<unsigned char> > vSolutions; |
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@ -158,6 +141,22 @@ bool IsStandardTx(const CTransaction& tx, std::string& reason, const bool witnes
@@ -158,6 +141,22 @@ bool IsStandardTx(const CTransaction& tx, std::string& reason, const bool witnes
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return true; |
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} |
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/**
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* Check transaction inputs to mitigate two |
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* potential denial-of-service attacks: |
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* |
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* 1. scriptSigs with extra data stuffed into them, |
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* not consumed by scriptPubKey (or P2SH script) |
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* 2. P2SH scripts with a crazy number of expensive |
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* CHECKSIG/CHECKMULTISIG operations |
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* |
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* Why bother? To avoid denial-of-service attacks; an attacker |
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* can submit a standard HASH... OP_EQUAL transaction, |
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* which will get accepted into blocks. The redemption |
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* script can be anything; an attacker could use a very |
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* expensive-to-check-upon-redemption script like: |
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* DUP CHECKSIG DROP ... repeated 100 times... OP_1 |
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*/ |
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bool AreInputsStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs) |
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{ |
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if (tx.IsCoinBase()) |
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