pedersen.hpp

Go to the documentation of this file.

// === AUDIT STATUS ===
// internal:    { status: not started, auditors: [], date: YYYY-MM-DD }
// external_1:  { status: not started, auditors: [], date: YYYY-MM-DD }
// external_2:  { status: not started, auditors: [], date: YYYY-MM-DD }
// =====================
 
#pragma once
 
#include "../generators/generator_data.hpp"
#include "barretenberg/ecc/curves/grumpkin/grumpkin.hpp"
#include "barretenberg/ecc/groups/precomputed_generators_grumpkin_impl.hpp"
namespace bb::crypto {
template <typename Curve> class pedersen_hash_base {
  public:
    using AffineElement = typename Curve::AffineElement;
    using Element = typename Curve::Element;
    using Fq = typename Curve::BaseField;
    using Fr = typename Curve::ScalarField;
    using Group = typename Curve::Group;
    using GeneratorContext = typename crypto::GeneratorContext<Curve>;
    inline static constexpr AffineElement length_generator =
        get_precomputed_generators<Group, "pedersen_hash_length", 1>()[0];
    static Fq hash(const std::vector<Fq>& inputs, GeneratorContext context = {});
    static Fq hash_buffer(const std::vector<uint8_t>& input, GeneratorContext context = {});
 
  private:
    static std::vector<Fq> convert_buffer(const std::vector<uint8_t>& input);
};
 
using pedersen_hash = pedersen_hash_base<curve::Grumpkin>;
} // namespace bb::crypto