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LibCrypto: Add base-10 string de/serialization methods for bigint

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This commit is contained in:
Itamar
2020-04-09 17:09:11 +03:00
committed by Andreas Kling
parent 709c691f38
commit 2125a4debb
Notes: sideshowbarker 2024-07-19 07:05:34 +09:00 
Author: https://github.com/itamar8910
Commit: https://github.com/SerenityOS/serenity/commit/2125a4debb1
Pull-request: https://github.com/SerenityOS/serenity/pull/1661
Reviewed-by: https://github.com/Dexesttp
Reviewed-by: https://github.com/alimpfard
Reviewed-by: https://github.com/awesomekling
3 changed files with 67 additions and 2 deletions
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8
Libraries/LibCrypto/BigInt/UnsignedBigInteger.h
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@@ -26,6 +26,7 @@
#pragma once
#include <AK/LogStream.h>
#include <AK/String.h>
#include <AK/Types.h>
#include <AK/Vector.h>
@@ -44,6 +45,7 @@ public:
UnsignedBigInteger() {}
static UnsignedBigInteger from_base10(const String& str);
static UnsignedBigInteger create_invalid();
const AK::Vector<u32>& words() const { return m_words; }
@@ -63,11 +65,14 @@ public:
size_t trimmed_length() const;
bool operator==(const UnsignedBigInteger& other) const;
bool operator!=(const UnsignedBigInteger& other) const;
bool operator<(const UnsignedBigInteger& other) const;
void invalidate() { m_is_invalid = true; }
bool is_invalid() const { return m_is_invalid; }
String to_base10() const;
private:
UnsignedBigInteger shift_left_by_n_words(const size_t number_of_words) const;
u32 shift_left_get_one_word(const size_t num_bits, const size_t result_word_index) const;
@@ -86,7 +91,8 @@ struct UnsignedDivisionResult {
}
inline const LogStream& operator<<(const LogStream& stream, const Crypto::UnsignedBigInteger value)
inline const LogStream&
operator<<(const LogStream& stream, const Crypto::UnsignedBigInteger value)
{
if (value.is_invalid()) {
stream << "Invalid BigInt";