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LibCrypto: Add the montgomery modular power algorithm

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This algorithm allows for much faster computations of modular powers
(around a 5x-10x speedup of the Crypto test). However, it is only valid
for odd modulo values, and therefore the old algorithm must be kept for
computations involving even modulo values.
This commit is contained in:
DexesTTP 2021-05-12 22:47:07 +02:00 • committed by Linus Groh
commit 485adb5e29
Notes: sideshowbarker 2024-07-18 18:13:40 +09:00
5 changed files with 264 additions and 2 deletions
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1
Userland/Libraries/LibCrypto/BigInt/UnsignedBigInteger.h
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@ -58,6 +58,7 @@ public:
m_cached_trimmed_length = {};
}
bool is_odd() const { return m_words.size() && (m_words[0] & 1); }
bool is_invalid() const { return m_is_invalid; }
size_t length() const { return m_words.size(); }