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8ffaf5c2f5
281fd1a4a032cded7f9ea9857e3e99fc793c714b Replace KeyIDHasher with SaltedSipHasher (Andrew Chow)
210b693db66e7c5b618014b5a287aee15af00045 Add generic SaltedSipHasher (Andrew Chow)
95e61c1cf2a91d041c8025306ba36f0ea2806894 Move Hashers to util/hasher.{cpp/h} (Andrew Chow)
Pull request description:
There are existing `SaltedOutPointHasher` and `SaltedTxidHasher` classes used for `std::unordered_map` and `std::unordered_set` that could be useful in other places in the codebase. So we these to their own `saltedhash.{cpp/h}` file. An existing `KeyIDHasher` is moved there too. Additionally, `ScriptIDHasher`, `SaltedPubkeyHasher`, and `SaltedScriptHasher` are added so that they can be used in future work.
`KeyIDHasher` and `ScriptIDHasher` are not salted so that equality comparisons of maps and sets keyed by `CKeyID` and `CScriptID` will actually work.
Split from #19602 (and a few other PRs/branches I have).
ACKs for top commit:
laanwj:
Code review ACK 281fd1a4a032cded7f9ea9857e3e99fc793c714b
jonatack:
ACK 281fd1a4a032cded7f9ea9857e3e99fc793c714b, code review, debug build and ran bitcoind after rebasing to master @ dff0f6f753ea
fjahr:
utACK 281fd1a4a032cded7f9ea9857e3e99fc793c714b
Tree-SHA512: bb03b231ccf3c9ecefc997b8da9c3770af4819f9be5b0a72997a103864e84046a2ac39b8eadf0dc9247bdccd53f86f433642e3a098882e6748341a9e7736271b
39 lines
1.4 KiB
C++
39 lines
1.4 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2020 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_SIGCACHE_H
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#define BITCOIN_SCRIPT_SIGCACHE_H
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#include <script/interpreter.h>
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#include <span.h>
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#include <util/hasher.h>
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#include <vector>
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// DoS prevention: limit cache size to 32MB (over 1000000 entries on 64-bit
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// systems). Due to how we count cache size, actual memory usage is slightly
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// more (~32.25 MB)
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static const unsigned int DEFAULT_MAX_SIG_CACHE_SIZE = 32;
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// Maximum sig cache size allowed
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static const int64_t MAX_MAX_SIG_CACHE_SIZE = 16384;
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class CPubKey;
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class CachingTransactionSignatureChecker : public TransactionSignatureChecker
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{
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private:
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bool store;
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public:
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CachingTransactionSignatureChecker(const CTransaction* txToIn, unsigned int nInIn, const CAmount& amountIn, bool storeIn, PrecomputedTransactionData& txdataIn) : TransactionSignatureChecker(txToIn, nInIn, amountIn, txdataIn), store(storeIn) {}
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bool VerifyECDSASignature(const std::vector<unsigned char>& vchSig, const CPubKey& vchPubKey, const uint256& sighash) const override;
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bool VerifySchnorrSignature(Span<const unsigned char> sig, const XOnlyPubKey& pubkey, const uint256& sighash) const override;
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};
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void InitSignatureCache();
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#endif // BITCOIN_SCRIPT_SIGCACHE_H
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