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LibCrypto: Add a += operation to UnsignedBigIntegerAlgorithms
This new operation is immediately used in several existing algorithms.
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f4e6f58cc6
commit
5071989545
10 changed files with 151 additions and 47 deletions
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@ -144,6 +144,15 @@ void UnsignedBigInteger::clamp_to_trimmed_length()
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m_words.resize(length);
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}
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void UnsignedBigInteger::resize_with_leading_zeros(size_t new_length)
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{
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size_t old_length = length();
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if (old_length < new_length) {
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m_words.resize_and_keep_capacity(new_length);
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__builtin_memset(&m_words.data()[old_length], 0, (new_length - old_length) * sizeof(u32));
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}
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}
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FLATTEN UnsignedBigInteger UnsignedBigInteger::plus(const UnsignedBigInteger& other) const
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{
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UnsignedBigInteger result;
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@ -215,9 +224,8 @@ FLATTEN UnsignedBigInteger UnsignedBigInteger::multiplied_by(const UnsignedBigIn
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UnsignedBigInteger temp_shift_result;
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UnsignedBigInteger temp_shift_plus;
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UnsignedBigInteger temp_shift;
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UnsignedBigInteger temp_plus;
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UnsignedBigIntegerAlgorithms::multiply_without_allocation(*this, other, temp_shift_result, temp_shift_plus, temp_shift, temp_plus, result);
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UnsignedBigIntegerAlgorithms::multiply_without_allocation(*this, other, temp_shift_result, temp_shift_plus, temp_shift, result);
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return result;
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}
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