wownero-seed/include/monero_seed/gf_elem.hpp
2020-09-20 12:34:19 +01:00

68 lines
1.5 KiB
C++

/*
Copyright (c) 2020 tevador <tevador@gmail.com>
All rights reserved.
*/
#pragma once
#include "galois_field.hpp"
class gf_elem {
public:
static constexpr gf_item size() {
return gf_2048::size();
}
constexpr gf_elem() : value_(0)
{
}
constexpr gf_elem(gf_item value) : value_(value)
{
}
gf_elem& operator+=(gf_elem x) {
value_ ^= x.value_;
return *this;
}
gf_elem& operator|=(gf_elem x) {
value_ |= x.value_;
return *this;
}
gf_elem& operator-=(gf_elem x) {
value_ ^= x.value_;
return *this;
}
gf_elem& operator*=(gf_elem x) {
value_ = field.mult(value_, x.value_);
return *this;
}
friend gf_elem operator+(gf_elem left, gf_elem right) {
left += right;
return left;
}
friend gf_elem operator-(gf_elem left, gf_elem right) {
left -= right;
return left;
}
friend gf_elem operator*(gf_elem left, gf_elem right) {
left *= right;
return left;
}
friend bool operator==(gf_elem lhs, gf_elem rhs) {
return lhs.value_ == rhs.value_;
}
friend bool operator!=(gf_elem lhs, gf_elem rhs) {
return !(lhs == rhs);
}
gf_elem& inverse() {
value_ = field.inverse(value_);
return *this;
}
gf_elem& exp() {
value_ = field.exp(value_);
return *this;
}
gf_item value() const {
return value_;
}
private:
static const gf_2048 field;
gf_item value_;
};