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LibCrypto: Copy the cached hash in SignedBigInteger / UnsignedBigInteger

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The hash computation for big integers is pretty expensive, so if we have
a cached hash when copying a big int, let's also copy the hash.
This commit is contained in:
Timothy Flynn
2025-07-21 07:33:40 -04:00
committed by Jelle Raaijmakers
parent 0faf96fa1b
commit cd73c70ad6
Notes: github-actions[bot] 2025-07-21 13:23:51 +00:00 
Author: https://github.com/trflynn89
Commit: https://github.com/LadybirdBrowser/ladybird/commit/cd73c70ad6d
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5543
Reviewed-by: https://github.com/gmta ✅
2 changed files with 8 additions and 0 deletions
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4
Libraries/LibCrypto/BigInt/SignedBigInteger.cpp
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@@ -47,6 +47,7 @@ SignedBigInteger::SignedBigInteger(i64 value)
}
SignedBigInteger::SignedBigInteger(SignedBigInteger const& other)
: m_hash(other.m_hash)
{
MP_MUST(mp_init_copy(&m_mp, &other.m_mp));
}
@@ -55,8 +56,11 @@ SignedBigInteger& SignedBigInteger::operator=(SignedBigInteger const& other)
{
if (this == &other)
return *this;
mp_clear(&m_mp);
MP_MUST(mp_init_copy(&m_mp, &other.m_mp));
m_hash = other.m_hash;
return *this;
}