ladybird/Userland/Libraries/LibCrypto/Curves/SECP256r1.h

/*
 * Copyright (c) 2022, Michiel Visser <opensource@webmichiel.nl>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#pragma once

#include <AK/ByteBuffer.h>
#include <AK/UFixedBigInt.h>
#include <LibCrypto/Curves/EllipticCurve.h>

namespace Crypto::Curves {

struct JacobianPoint {
    u256 x { 0u };
    u256 y { 0u };
    u256 z { 0u };
};

class SECP256r1 : public EllipticCurve {
public:
    size_t key_size() override { return 1 + 2 * 32; }
    ErrorOr<ByteBuffer> generate_private_key() override;
    ErrorOr<ByteBuffer> generate_public_key(ReadonlyBytes a) override;
    ErrorOr<ByteBuffer> compute_coordinate(ReadonlyBytes scalar_bytes, ReadonlyBytes point_bytes) override;
    ErrorOr<ByteBuffer> derive_premaster_key(ReadonlyBytes shared_point) override;
};

}