TomZ
133 lines
3.4 KiB
C++
133 lines
3.4 KiB
C++
/*
|
|
* This file is part of the Flowee project
|
|
* Copyright (C) 2015 The Bitcoin Core developers
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that 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/>.
|
|
*/
|
|
//
|
|
// C++ wrapper around ctaes, a constant-time AES implementation
|
|
|
|
#ifndef FLOWEE_CRYPTO_AES_H
|
|
#define FLOWEE_CRYPTO_AES_H
|
|
|
|
extern "C" {
|
|
#include "ctaes/ctaes.h"
|
|
}
|
|
|
|
static const int AES_BLOCKSIZE = 16;
|
|
static const int AES128_KEYSIZE = 16;
|
|
static const int AES256_KEYSIZE = 32;
|
|
|
|
/** An encryption class for AES-128. */
|
|
class AES128Encrypt
|
|
{
|
|
private:
|
|
AES128_ctx ctx;
|
|
|
|
public:
|
|
AES128Encrypt(const unsigned char key[16]);
|
|
~AES128Encrypt();
|
|
void Encrypt(unsigned char ciphertext[16], const unsigned char plaintext[16]) const;
|
|
};
|
|
|
|
/** A decryption class for AES-128. */
|
|
class AES128Decrypt
|
|
{
|
|
private:
|
|
AES128_ctx ctx;
|
|
|
|
public:
|
|
AES128Decrypt(const unsigned char key[16]);
|
|
~AES128Decrypt();
|
|
void Decrypt(unsigned char plaintext[16], const unsigned char ciphertext[16]) const;
|
|
};
|
|
|
|
/** An encryption class for AES-256. */
|
|
class AES256Encrypt
|
|
{
|
|
private:
|
|
AES256_ctx ctx;
|
|
|
|
public:
|
|
AES256Encrypt(const unsigned char key[32]);
|
|
~AES256Encrypt();
|
|
void Encrypt(unsigned char ciphertext[16], const unsigned char plaintext[16]) const;
|
|
};
|
|
|
|
/** A decryption class for AES-256. */
|
|
class AES256Decrypt
|
|
{
|
|
private:
|
|
AES256_ctx ctx;
|
|
|
|
public:
|
|
AES256Decrypt(const unsigned char key[32]);
|
|
~AES256Decrypt();
|
|
void Decrypt(unsigned char plaintext[16], const unsigned char ciphertext[16]) const;
|
|
};
|
|
|
|
class AES256CBCEncrypt
|
|
{
|
|
public:
|
|
AES256CBCEncrypt(const unsigned char key[AES256_KEYSIZE], const unsigned char ivIn[AES_BLOCKSIZE], bool padIn);
|
|
~AES256CBCEncrypt();
|
|
int Encrypt(const unsigned char* data, int size, unsigned char* out) const;
|
|
|
|
private:
|
|
const AES256Encrypt enc;
|
|
const bool pad;
|
|
unsigned char iv[AES_BLOCKSIZE];
|
|
};
|
|
|
|
class AES256CBCDecrypt
|
|
{
|
|
public:
|
|
AES256CBCDecrypt(const unsigned char key[AES256_KEYSIZE], const unsigned char ivIn[AES_BLOCKSIZE], bool padIn);
|
|
~AES256CBCDecrypt();
|
|
int Decrypt(const unsigned char* data, int size, unsigned char* out) const;
|
|
|
|
private:
|
|
const AES256Decrypt dec;
|
|
const bool pad;
|
|
unsigned char iv[AES_BLOCKSIZE];
|
|
};
|
|
|
|
class AES128CBCEncrypt
|
|
{
|
|
public:
|
|
AES128CBCEncrypt(const unsigned char key[AES128_KEYSIZE], const unsigned char ivIn[AES_BLOCKSIZE], bool padIn);
|
|
~AES128CBCEncrypt();
|
|
int Encrypt(const unsigned char* data, int size, unsigned char* out) const;
|
|
|
|
private:
|
|
const AES128Encrypt enc;
|
|
const bool pad;
|
|
unsigned char iv[AES_BLOCKSIZE];
|
|
};
|
|
|
|
class AES128CBCDecrypt
|
|
{
|
|
public:
|
|
AES128CBCDecrypt(const unsigned char key[AES128_KEYSIZE], const unsigned char ivIn[AES_BLOCKSIZE], bool padIn);
|
|
~AES128CBCDecrypt();
|
|
int Decrypt(const unsigned char* data, int size, unsigned char* out) const;
|
|
|
|
private:
|
|
const AES128Decrypt dec;
|
|
const bool pad;
|
|
unsigned char iv[AES_BLOCKSIZE];
|
|
};
|
|
|
|
#endif
|