You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
33 lines
667 B
33 lines
667 B
/*
|
|
Copyright (c) 2020 tevador <tevador@gmail.com>
|
|
All rights reserved.
|
|
*/
|
|
|
|
#include <wownero_seed/galois_field.hpp>
|
|
|
|
template<unsigned bits, gf_item primitive>
|
|
galois_field<bits, primitive>::galois_field() {
|
|
gf_item b = 1;
|
|
for (gf_item i = 0; i < size_; ++i) {
|
|
log_table[b] = i;
|
|
exp_table[i] = b;
|
|
b <<= 1;
|
|
if ((b & size_) != 0)
|
|
b ^= primitive;
|
|
}
|
|
for (auto i = size_ - 1; i < (2 * size_); ++i) {
|
|
exp_table[i] = exp_table[i - (size_ - 1)];
|
|
}
|
|
for (gf_item i = 2; i < size_; i++) {
|
|
for (gf_item j = 2; j < size_; j++) {
|
|
auto p = mult(i, j);
|
|
if (p == 1) {
|
|
inv_table[i] = j;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
template class galois_field<11, 2053>;
|