Atmosphere/libraries/libvapours/include/vapours/crypto/crypto_aes_decryptor.hpp

57 lines
1.9 KiB
C++

/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <vapours/common.hpp>
#include <vapours/assert.hpp>
#include <vapours/util.hpp>
#include <vapours/crypto/impl/crypto_aes_impl.hpp>
namespace ams::crypto {
template<size_t _KeySize>
class AesDecryptor {
NON_COPYABLE(AesDecryptor);
NON_MOVEABLE(AesDecryptor);
private:
using Impl = impl::AesImpl<_KeySize>;
public:
static constexpr size_t KeySize = Impl::KeySize;
static constexpr size_t BlockSize = Impl::BlockSize;
static constexpr size_t RoundKeySize = Impl::RoundKeySize;
private:
Impl impl;
public:
AesDecryptor() { /* ... */ }
void Initialize(const void *key, size_t key_size) {
this->impl.Initialize(key, key_size, false);
}
void DecryptBlock(void *dst, size_t dst_size, const void *src, size_t src_size) const {
return this->impl.DecryptBlock(dst, dst_size, src, src_size);
}
const u8 *GetRoundKey() const {
return this->impl.GetRoundKey();
}
};
using AesDecryptor128 = AesDecryptor<16>;
using AesDecryptor192 = AesDecryptor<24>;
using AesDecryptor256 = AesDecryptor<32>;
}