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LibCrypto: Introduce a falible API for SignedBigInteger::shift_left

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Jess
2025-02-19 02:20:30 +13:00
committed by Tim Flynn
parent c48641c13a
commit 8fda05d8b7
Notes: github-actions[bot] 2025-02-19 14:02:02 +00:00 
Author: https://github.com/ttrssreal
Commit: https://github.com/LadybirdBrowser/ladybird/commit/8fda05d8b79
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3615
6 changed files with 48 additions and 8 deletions
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4
Libraries/LibCrypto/BigInt/Algorithms/UnsignedBigIntegerAlgorithms.h
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@@ -27,6 +27,8 @@ public:
static void divide_without_allocation(UnsignedBigInteger const& numerator, UnsignedBigInteger const& denominator, UnsignedBigInteger& quotient, UnsignedBigInteger& remainder);
static void divide_u16_without_allocation(UnsignedBigInteger const& numerator, UnsignedBigInteger::Word denominator, UnsignedBigInteger& quotient, UnsignedBigInteger& remainder);
static ErrorOr<void> try_shift_left_without_allocation(UnsignedBigInteger const& number, size_t bits_to_shift_by, UnsignedBigInteger& temp_result, UnsignedBigInteger& temp_plus, UnsignedBigInteger& output);
static void extended_GCD_without_allocation(UnsignedBigInteger const& a, UnsignedBigInteger const& b, UnsignedBigInteger& x, UnsignedBigInteger& y, UnsignedBigInteger& gcd, UnsignedBigInteger& temp_quotient, UnsignedBigInteger& temp_1, UnsignedBigInteger& temp_2, UnsignedBigInteger& temp_shift_result, UnsignedBigInteger& temp_shift_plus, UnsignedBigInteger& temp_shift, UnsignedBigInteger& temp_r, UnsignedBigInteger& temp_s, UnsignedBigInteger& temp_t);
static void destructive_GCD_without_allocation(UnsignedBigInteger& temp_a, UnsignedBigInteger& temp_b, UnsignedBigInteger& temp_quotient, UnsignedBigInteger& temp_remainder, UnsignedBigInteger& output);
static void modular_inverse_without_allocation(UnsignedBigInteger const& a, UnsignedBigInteger const& b, UnsignedBigInteger& result, UnsignedBigInteger& temp_y, UnsignedBigInteger& temp_gcd, UnsignedBigInteger& temp_quotient, UnsignedBigInteger& temp_1, UnsignedBigInteger& temp_2, UnsignedBigInteger& temp_shift_result, UnsignedBigInteger& temp_shift_plus, UnsignedBigInteger& temp_shift, UnsignedBigInteger& temp_r, UnsignedBigInteger& temp_s, UnsignedBigInteger& temp_t);
@@ -39,6 +41,8 @@ private:
static void shift_left_by_n_words(UnsignedBigInteger const& number, size_t number_of_words, UnsignedBigInteger& output);
static void shift_right_by_n_words(UnsignedBigInteger const& number, size_t number_of_words, UnsignedBigInteger& output);
ALWAYS_INLINE static UnsignedBigInteger::Word shift_left_get_one_word(UnsignedBigInteger const& number, size_t num_bits, size_t result_word_index);
static ErrorOr<void> try_shift_left_by_n_words(UnsignedBigInteger const& number, size_t number_of_words, UnsignedBigInteger& output);
};
}