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// Copyright 2007,2008 Segher Boessenkool <segher@kernel.crashing.org>
// Licensed under the terms of the GNU GPL, version 2
// http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
#pragma once
#include <array>
#include "Common/CommonTypes.h"
namespace Common::ec
{
using Signature = std::array<u8, 60>;
using PublicKey = std::array<u8, 60>;
/// Generate a signature using ECDSA.
Signature Sign(const u8* key, const u8* hash);
/// Check a signature using ECDSA.
///
/// @param public_key 30 byte ECC public key
/// @param signature 60 byte signature
/// @param hash Message hash
bool VerifySignature(const u8* public_key, const u8* signature, const u8* hash);
/// Compute a shared secret from a private key (30 bytes) and public key (60 bytes).
std::array<u8, 60> ComputeSharedSecret(const u8* private_key, const u8* public_key);
/// Convert a ECC private key (30 bytes) to a public key (60 bytes).
PublicKey PrivToPub(const u8* key);
} // namespace Common::ec
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