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Diffstat (limited to 'src/script/sigcache.h')
-rw-r--r-- | src/script/sigcache.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/script/sigcache.h b/src/script/sigcache.h index 60690583de..55cec4cc8d 100644 --- a/src/script/sigcache.h +++ b/src/script/sigcache.h @@ -19,6 +19,27 @@ static const int64_t MAX_MAX_SIG_CACHE_SIZE = 16384; class CPubKey; +/** + * We're hashing a nonce into the entries themselves, so we don't need extra + * blinding in the set hash computation. + * + * This may exhibit platform endian dependent behavior but because these are + * nonced hashes (random) and this state is only ever used locally it is safe. + * All that matters is local consistency. + */ +class SignatureCacheHasher +{ +public: + template <uint8_t hash_select> + uint32_t operator()(const uint256& key) const + { + static_assert(hash_select <8, "SignatureCacheHasher only has 8 hashes available."); + uint32_t u; + std::memcpy(&u, key.begin()+4*hash_select, 4); + return u; + } +}; + class CachingTransactionSignatureChecker : public TransactionSignatureChecker { private: |