hash.hpp

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// === AUDIT STATUS ===
// internal:    { status: Complete, auditors: [Nishat], commit: 22d6fc368da0fbe5412f4f7b2890a052aa48d803 }
// external_1:  { status: not started, auditors: [], commit: }
// external_2:  { status: not started, auditors: [], commit: }
// =====================
 
#pragma once
#include "barretenberg/crypto/poseidon2/poseidon2.hpp"
#include <vector>
 
namespace bb::crypto::merkle_tree {
 
struct Poseidon2HashPolicy {
    static fr hash(const std::vector<fr>& inputs)
    {
        return bb::crypto::Poseidon2<bb::crypto::Poseidon2Bn254ScalarFieldParams>::hash(inputs);
    }
 
    static fr hash_pair(const fr& lhs, const fr& rhs) { return hash(std::vector<fr>({ lhs, rhs })); }
 
    static fr hash_pair_with_separator(uint64_t sep, const fr& lhs, const fr& rhs)
    {
        return hash(std::vector<fr>({ fr(sep), lhs, rhs }));
    }
 
    static fr zero_hash() { return fr::zero(); }
};
 
} // namespace bb::crypto::merkle_tree