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LibCrypto: Add the UnsignedBigInteger::Word alias

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This makes it clearer which variables are operating on words instead
of directly operating on raw values.
This commit is contained in:
DexesTTP 2021-05-12 13:25:55 +02:00 • committed by Linus Groh
parent 5963f6f9ff
commit f4e6f58cc6
5 changed files with 16 additions and 15 deletions
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2
Userland/Libraries/LibCrypto/BigInt/Algorithms/BitwiseOperations.cpp
View file

@ -220,7 +220,7 @@ ALWAYS_INLINE void UnsignedBigIntegerAlgorithms::shift_left_by_n_words(
/**
* Returns the word at a requested index in the result of a shift operation
*/
ALWAYS_INLINE u32 UnsignedBigIntegerAlgorithms::shift_left_get_one_word(
ALWAYS_INLINE UnsignedBigInteger::Word UnsignedBigIntegerAlgorithms::shift_left_get_one_word(
UnsignedBigInteger const& number,
size_t num_bits,
size_t result_word_index)

4
Userland/Libraries/LibCrypto/BigInt/Algorithms/Division.cpp
View file

@ -54,12 +54,12 @@ FLATTEN void UnsignedBigIntegerAlgorithms::divide_without_allocation(
*/
FLATTEN void UnsignedBigIntegerAlgorithms::divide_u16_without_allocation(
UnsignedBigInteger const& numerator,
u32 denominator,
UnsignedBigInteger::Word denominator,
UnsignedBigInteger& quotient,
UnsignedBigInteger& remainder)
{
VERIFY(denominator < (1 << 16));
u32 remainder_word = 0;
UnsignedBigInteger::Word remainder_word = 0;
auto numerator_length = numerator.trimmed_length();
quotient.set_to_0();
quotient.m_words.resize(numerator_length);

4
Userland/Libraries/LibCrypto/BigInt/Algorithms/UnsignedBigIntegerAlgorithms.h
View file

@ -21,7 +21,7 @@ public:
static void shift_left_without_allocation(UnsignedBigInteger const& number, size_t bits_to_shift_by, UnsignedBigInteger& temp_result, UnsignedBigInteger& temp_plus, UnsignedBigInteger& output);
static void multiply_without_allocation(UnsignedBigInteger const& left, UnsignedBigInteger const& right, UnsignedBigInteger& temp_shift_result, UnsignedBigInteger& temp_shift_plus, UnsignedBigInteger& temp_shift, UnsignedBigInteger& temp_plus, UnsignedBigInteger& output);
static void divide_without_allocation(UnsignedBigInteger const& numerator, UnsignedBigInteger const& denominator, UnsignedBigInteger& temp_shift_result, UnsignedBigInteger& temp_shift_plus, UnsignedBigInteger& temp_shift, UnsignedBigInteger& temp_minus, UnsignedBigInteger& quotient, UnsignedBigInteger& remainder);
static void divide_u16_without_allocation(UnsignedBigInteger const& numerator, u32 denominator, UnsignedBigInteger& quotient, UnsignedBigInteger& remainder);
static void divide_u16_without_allocation(UnsignedBigInteger const& numerator, UnsignedBigInteger::Word denominator, UnsignedBigInteger& quotient, UnsignedBigInteger& remainder);
static void destructive_GCD_without_allocation(UnsignedBigInteger& temp_a, UnsignedBigInteger& temp_b, UnsignedBigInteger& temp_1, UnsignedBigInteger& temp_2, UnsignedBigInteger& temp_3, UnsignedBigInteger& temp_4, UnsignedBigInteger& temp_quotient, UnsignedBigInteger& temp_remainder, UnsignedBigInteger& output);
static void modular_inverse_without_allocation(UnsignedBigInteger const& a_, UnsignedBigInteger const& b, UnsignedBigInteger& temp_1, UnsignedBigInteger& temp_2, UnsignedBigInteger& temp_3, UnsignedBigInteger& temp_4, UnsignedBigInteger& temp_plus, UnsignedBigInteger& temp_minus, UnsignedBigInteger& temp_quotient, UnsignedBigInteger& temp_d, UnsignedBigInteger& temp_u, UnsignedBigInteger& temp_v, UnsignedBigInteger& temp_x, UnsignedBigInteger& result);
@ -29,7 +29,7 @@ public:
private:
ALWAYS_INLINE static void shift_left_by_n_words(UnsignedBigInteger const& number, size_t number_of_words, UnsignedBigInteger& output);
ALWAYS_INLINE static u32 shift_left_get_one_word(UnsignedBigInteger const& number, size_t num_bits, size_t result_word_index);
ALWAYS_INLINE static UnsignedBigInteger::Word shift_left_get_one_word(UnsignedBigInteger const& number, size_t num_bits, size_t result_word_index);
};
}