12#ifndef BOTAN_GF2M_SMALL_M_H_
13#define BOTAN_GF2M_SMALL_M_H_
15#include <botan/types.h>
32 return ((x) ? gf_mul_fast(x, y) : 0);
37 return ((x) ? gf_exp(_gf_modq_1(gf_log(x) << 1)) : 0);
42 return _gf_modq_1(x << 1);
47 return ((y) ? gf_exp(_gf_modq_1(gf_log(x) + gf_log(y))) : 0);
65 return (_gf_modq_1(gf_mul_lll(a,
b)));
70 return (gf_exp(gf_mul_rrr(a,
b)));
75 return _gf_modq_1(gf_mul_lll(a, gf_log(y)));
80 return gf_mul_rrn(a, y);
85 return (gf_log(x) + gf_log(y));
90 return _gf_modq_1(gf_mul_lnn(x, y));
95 return gf_exp(_gf_modq_1((a) + gf_log(y)));
103 return ( (y == 0) ? 0 : gf_mul_nrn(a, y) );
108 return gf_mul_zrz(y, a);
116 return gf_mul_nrn(a, y);
121 return ((x) ? gf_exp(_gf_modq_1(gf_log(x) << (get_extension_degree()-1))) : 0);
126 return _gf_modq_1(gf_log(x) - gf_log(y));
131 return _gf_modq_1(gf_log(x) -
b);
136 return gf_exp(_gf_modq_1(a -
b));
141 return ((x) ? gf_exp(_gf_modq_1(gf_log(x) -
b)) : 0);
146 return gf_exp(gf_ord() - gf_log(x));
151 return (gf_ord() - gf_log(x));
156 return gf_log(x) << 1;
173 return m_gf_exp_table.at(i);
178 return m_gf_log_table.at(i);
183 return m_gf_multiplicative_order;
188 return m_gf_extension_degree;
193 return static_cast<gf2m>(1 << get_extension_degree());
197 gf2m _gf_modq_1(int32_t d)
const
204 return static_cast<gf2m>(((d) & gf_ord()) + ((d) >> get_extension_degree()));
207 const size_t m_gf_extension_degree;
208 const gf2m m_gf_multiplicative_order;
209 const std::vector<gf2m>& m_gf_log_table;
210 const std::vector<gf2m>& m_gf_exp_table;
gf2m gf_mul_lnn(gf2m x, gf2m y) const
gf2m gf_square_rr(gf2m a) const
gf2m gf_mul_zrz(gf2m a, gf2m y) const
gf2m gf_l_from_n(gf2m x) const
gf2m gf_mul(gf2m x, gf2m y) const
gf2m gf_square_ln(gf2m x) const
gf2m gf_mul_rrr(gf2m a, gf2m b) const
gf2m gf_exp(gf2m i) const
gf2m gf_mul_rnn(gf2m x, gf2m y) const
gf2m square_rr(gf2m x) const
gf2m gf_mul_nrn(gf2m a, gf2m y) const
gf2m gf_div_rnr(gf2m x, gf2m b) const
gf2m gf_mul_rrn(gf2m a, gf2m y) const
gf2m gf_div_zzr(gf2m x, gf2m b) const
gf2m gf_div_rnn(gf2m x, gf2m y) const
gf2m gf_inv(gf2m x) const
gf2m gf_square(gf2m x) const
gf2m gf_sqrt(gf2m x) const
gf2m gf_mul_fast(gf2m x, gf2m y) const
gf2m gf_div_nrr(gf2m a, gf2m b) const
gf2m gf_inv_rn(gf2m x) const
gf2m get_cardinality() const
gf2m gf_mul_nnr(gf2m y, gf2m a) const
gf2m gf_mul_lll(gf2m a, gf2m b) const
gf2m gf_mul_nrr(gf2m a, gf2m b) const
gf2m gf_log(gf2m i) const
size_t get_extension_degree() const
gf2m gf_mul_rnr(gf2m y, gf2m a) const
gf2m gf_mul_zzr(gf2m a, gf2m y) const
gf2m decode_gf2m(const uint8_t *mem)
uint32_t encode_gf2m(gf2m to_enc, uint8_t *mem)