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// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <cstddef>
#include <span>
#include <vector>
#include "common/common_types.h"
namespace HW::AES {
constexpr std::size_t CCM_NONCE_SIZE = 12;
constexpr std::size_t CCM_MAC_SIZE = 16;
using CCMNonce = std::array<u8, CCM_NONCE_SIZE>;
/**
* Encrypts and adds a MAC to the given data using AES-CCM algorithm.
* @param pdata The plain text data to encrypt
* @param nonce The nonce data to use for encryption
* @param slot_id The slot ID of the key to use for encryption
* @returns a vector of u8 containing the encrypted data with MAC at the end
*/
std::vector<u8> EncryptSignCCM(std::span<const u8> pdata, const CCMNonce& nonce,
std::size_t slot_id);
/**
* Decrypts and verify the MAC of the given data using AES-CCM algorithm.
* @param cipher The cipher text data to decrypt, with MAC at the end to verify
* @param nonce The nonce data to use for decryption
* @param slot_id The slot ID of the key to use for decryption
* @returns a vector of u8 containing the decrypted data; an empty vector if the verification fails
*/
std::vector<u8> DecryptVerifyCCM(std::span<const u8> cipher, const CCMNonce& nonce,
std::size_t slot_id);
} // namespace HW::AES
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