Original HUSH source code based on ZEC 1.0.8 . For historical purposes only!
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96 lines
3.0 KiB
96 lines
3.0 KiB
/** @file
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*****************************************************************************
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* @author This file is part of libsnark, developed by SCIPR Lab
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* and contributors (see AUTHORS).
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* @copyright MIT license (see LICENSE file)
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*****************************************************************************/
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#ifndef ALT_BN128_G2_HPP_
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#define ALT_BN128_G2_HPP_
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#include <vector>
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#include "algebra/curves/alt_bn128/alt_bn128_init.hpp"
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#include "algebra/curves/curve_utils.hpp"
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namespace libsnark {
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class alt_bn128_G2;
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std::ostream& operator<<(std::ostream &, const alt_bn128_G2&);
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std::istream& operator>>(std::istream &, alt_bn128_G2&);
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class alt_bn128_G2 {
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public:
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#ifdef PROFILE_OP_COUNTS
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static long long add_cnt;
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static long long dbl_cnt;
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#endif
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static std::vector<size_t> wnaf_window_table;
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static std::vector<size_t> fixed_base_exp_window_table;
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static alt_bn128_G2 G2_zero;
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static alt_bn128_G2 G2_one;
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typedef alt_bn128_Fq base_field;
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typedef alt_bn128_Fq2 twist_field;
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typedef alt_bn128_Fr scalar_field;
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alt_bn128_Fq2 X, Y, Z;
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// using Jacobian coordinates
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alt_bn128_G2();
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alt_bn128_G2(const alt_bn128_Fq2& X, const alt_bn128_Fq2& Y, const alt_bn128_Fq2& Z) : X(X), Y(Y), Z(Z) {};
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static alt_bn128_Fq2 mul_by_b(const alt_bn128_Fq2 &elt);
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void print() const;
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void print_coordinates() const;
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void to_affine_coordinates();
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void to_special();
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bool is_special() const;
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bool is_zero() const;
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bool operator==(const alt_bn128_G2 &other) const;
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bool operator!=(const alt_bn128_G2 &other) const;
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alt_bn128_G2 operator+(const alt_bn128_G2 &other) const;
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alt_bn128_G2 operator-() const;
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alt_bn128_G2 operator-(const alt_bn128_G2 &other) const;
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alt_bn128_G2 add(const alt_bn128_G2 &other) const;
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alt_bn128_G2 mixed_add(const alt_bn128_G2 &other) const;
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alt_bn128_G2 dbl() const;
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alt_bn128_G2 mul_by_q() const;
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bool is_well_formed() const;
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static alt_bn128_G2 zero();
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static alt_bn128_G2 one();
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static alt_bn128_G2 random_element();
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static size_t size_in_bits() { return twist_field::size_in_bits() + 1; }
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static bigint<base_field::num_limbs> base_field_char() { return base_field::field_char(); }
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static bigint<scalar_field::num_limbs> order() { return scalar_field::field_char(); }
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friend std::ostream& operator<<(std::ostream &out, const alt_bn128_G2 &g);
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friend std::istream& operator>>(std::istream &in, alt_bn128_G2 &g);
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};
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template<mp_size_t m>
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alt_bn128_G2 operator*(const bigint<m> &lhs, const alt_bn128_G2 &rhs)
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{
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return scalar_mul<alt_bn128_G2, m>(rhs, lhs);
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}
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template<mp_size_t m, const bigint<m>& modulus_p>
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alt_bn128_G2 operator*(const Fp_model<m,modulus_p> &lhs, const alt_bn128_G2 &rhs)
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{
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return scalar_mul<alt_bn128_G2, m>(rhs, lhs.as_bigint());
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}
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template<typename T>
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void batch_to_special_all_non_zeros(std::vector<T> &vec);
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template<>
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void batch_to_special_all_non_zeros<alt_bn128_G2>(std::vector<alt_bn128_G2> &vec);
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} // libsnark
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#endif // ALT_BN128_G2_HPP_
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