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LibCrypto: Add a += operation to UnsignedBigIntegerAlgorithms

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This new operation is immediately used in several existing algorithms.
This commit is contained in:
DexesTTP 2021-05-12 10:47:21 +02:00 • committed by Linus Groh
parent f4e6f58cc6
commit 5071989545
10 changed files with 151 additions and 47 deletions
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4
Userland/Libraries/LibCrypto/BigInt/Algorithms/ModularPower.cpp
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@ -26,7 +26,7 @@ void UnsignedBigIntegerAlgorithms::destructive_modular_power_without_allocation(
while (!(ep < 1)) {
if (ep.words()[0] % 2 == 1) {
// exp = (exp * base) % m;
multiply_without_allocation(exp, base, temp_1, temp_2, temp_3, temp_4, temp_multiply);
multiply_without_allocation(exp, base, temp_1, temp_2, temp_3, temp_multiply);
divide_without_allocation(temp_multiply, m, temp_1, temp_2, temp_3, temp_4, temp_quotient, temp_remainder);
exp.set_to(temp_remainder);
}
@ -36,7 +36,7 @@ void UnsignedBigIntegerAlgorithms::destructive_modular_power_without_allocation(
ep.set_to(temp_quotient);
// base = (base * base) % m;
multiply_without_allocation(base, base, temp_1, temp_2, temp_3, temp_4, temp_multiply);
multiply_without_allocation(base, base, temp_1, temp_2, temp_3, temp_multiply);
divide_without_allocation(temp_multiply, m, temp_1, temp_2, temp_3, temp_4, temp_quotient, temp_remainder);
base.set_to(temp_remainder);