edwards_init.hpp

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#ifndef EDWARDS_INIT_HPP_
#define EDWARDS_INIT_HPP_
#include <libff/algebra/curves/public_params.hpp>
#include <libff/algebra/fields/fp.hpp>
#include <libff/algebra/fields/fp3.hpp>
#include <libff/algebra/fields/fp6_2over3.hpp>
 
namespace libff
{
 
const mp_size_t edwards_r_bitcount = 181;
const mp_size_t edwards_q_bitcount = 183;
 
const mp_size_t edwards_r_limbs =
    (edwards_r_bitcount + GMP_NUMB_BITS - 1) / GMP_NUMB_BITS;
const mp_size_t edwards_q_limbs =
    (edwards_q_bitcount + GMP_NUMB_BITS - 1) / GMP_NUMB_BITS;
 
extern bigint<edwards_r_limbs> edwards_modulus_r;
extern bigint<edwards_q_limbs> edwards_modulus_q;
 
typedef Fp_model<edwards_r_limbs, edwards_modulus_r> edwards_Fr;
typedef Fp_model<edwards_q_limbs, edwards_modulus_q> edwards_Fq;
typedef Fp3_model<edwards_q_limbs, edwards_modulus_q> edwards_Fq3;
typedef Fp6_2over3_model<edwards_q_limbs, edwards_modulus_q> edwards_Fq6;
typedef edwards_Fq6 edwards_GT;
 
// parameters for Edwards curve E_{1,d}(F_q)
extern edwards_Fq edwards_coeff_a;
extern edwards_Fq edwards_coeff_d;
// parameters for twisted Edwards curve E_{a',d'}(F_q^3)
extern edwards_Fq3 edwards_twist;
extern edwards_Fq3 edwards_twist_coeff_a;
extern edwards_Fq3 edwards_twist_coeff_d;
extern edwards_Fq edwards_twist_mul_by_a_c0;
extern edwards_Fq edwards_twist_mul_by_a_c1;
extern edwards_Fq edwards_twist_mul_by_a_c2;
extern edwards_Fq edwards_twist_mul_by_d_c0;
extern edwards_Fq edwards_twist_mul_by_d_c1;
extern edwards_Fq edwards_twist_mul_by_d_c2;
extern edwards_Fq edwards_twist_mul_by_q_Y;
extern edwards_Fq edwards_twist_mul_by_q_Z;
 
// parameters for pairing
extern bigint<edwards_q_limbs> edwards_ate_loop_count;
extern bigint<6 * edwards_q_limbs> edwards_final_exponent;
extern bigint<edwards_q_limbs> edwards_final_exponent_last_chunk_abs_of_w0;
extern bool edwards_final_exponent_last_chunk_is_w0_neg;
extern bigint<edwards_q_limbs> edwards_final_exponent_last_chunk_w1;
 
void init_edwards_params();
 
class edwards_G1;
class edwards_G2;
 
} // namespace libff
#endif // EDWARDS_INIT_HPP_