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b9dd94b9b2
The loops relied on unsigned integer overflow, which is not immediately obvious. Replace them with less clever variants that are clearer. Also implement bn_compare using std::memcmp.
17 lines
558 B
C
17 lines
558 B
C
// Copyright 2014 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#pragma once
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#include "Common/CommonTypes.h"
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// bignum arithmetic
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int bn_compare(const u8* a, const u8* b, int n);
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void bn_sub_modulus(u8* a, const u8* N, int n);
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void bn_add(u8* d, const u8* a, const u8* b, const u8* N, int n);
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void bn_mul(u8* d, const u8* a, const u8* b, const u8* N, int n);
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void bn_inv(u8* d, const u8* a, const u8* N, int n); // only for prime N
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void bn_exp(u8* d, const u8* a, const u8* N, int n, const u8* e, int en);
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