Bitcoin Core  21.99.0
P2P Digital Currency
sigcache.h
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1 // Copyright (c) 2009-2010 Satoshi Nakamoto
2 // Copyright (c) 2009-2020 The Bitcoin Core developers
3 // Distributed under the MIT software license, see the accompanying
4 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
5 
6 #ifndef BITCOIN_SCRIPT_SIGCACHE_H
7 #define BITCOIN_SCRIPT_SIGCACHE_H
8 
9 #include <script/interpreter.h>
10 #include <span.h>
11 #include <util/hasher.h>
12 
13 #include <vector>
14 
15 // DoS prevention: limit cache size to 32MB (over 1000000 entries on 64-bit
16 // systems). Due to how we count cache size, actual memory usage is slightly
17 // more (~32.25 MB)
18 static const unsigned int DEFAULT_MAX_SIG_CACHE_SIZE = 32;
19 // Maximum sig cache size allowed
20 static const int64_t MAX_MAX_SIG_CACHE_SIZE = 16384;
21 
22 class CPubKey;
23 
25 {
26 private:
27  bool store;
28 
29 public:
30  CachingTransactionSignatureChecker(const CTransaction* txToIn, unsigned int nInIn, const CAmount& amountIn, bool storeIn, PrecomputedTransactionData& txdataIn) : TransactionSignatureChecker(txToIn, nInIn, amountIn, txdataIn), store(storeIn) {}
31 
32  bool VerifyECDSASignature(const std::vector<unsigned char>& vchSig, const CPubKey& vchPubKey, const uint256& sighash) const override;
33  bool VerifySchnorrSignature(Span<const unsigned char> sig, const XOnlyPubKey& pubkey, const uint256& sighash) const override;
34 };
35 
36 void InitSignatureCache();
37 
38 #endif // BITCOIN_SCRIPT_SIGCACHE_H
bool VerifySchnorrSignature(Span< const unsigned char > sig, const XOnlyPubKey &pubkey, const uint256 &sighash) const override
Definition: sigcache.cpp:114
static const unsigned int DEFAULT_MAX_SIG_CACHE_SIZE
Definition: sigcache.h:18
void InitSignatureCache()
Definition: sigcache.cpp:91
CachingTransactionSignatureChecker(const CTransaction *txToIn, unsigned int nInIn, const CAmount &amountIn, bool storeIn, PrecomputedTransactionData &txdataIn)
Definition: sigcache.h:30
int64_t CAmount
Amount in satoshis (Can be negative)
Definition: amount.h:12
An encapsulated public key.
Definition: pubkey.h:31
256-bit opaque blob.
Definition: uint256.h:124
static const int64_t MAX_MAX_SIG_CACHE_SIZE
Definition: sigcache.h:20
bool VerifyECDSASignature(const std::vector< unsigned char > &vchSig, const CPubKey &vchPubKey, const uint256 &sighash) const override
Definition: sigcache.cpp:101
A Span is an object that can refer to a contiguous sequence of objects.
Definition: span.h:92
The basic transaction that is broadcasted on the network and contained in blocks. ...
Definition: transaction.h:259