ttkcryptographichash.h

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#ifndef TTKCRYPTOGRAPHICHASH_H
#define TTKCRYPTOGRAPHICHASH_H

/***************************************************************************
 * This file is part of the TTK Library Module project
 * Copyright (C) 2015 - 2024 Greedysky Studio

 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser 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 Lesser General Public License for more details.

 * You should have received a copy of the GNU Lesser General Public License along
 * with this program; If not, see <http://www.gnu.org/licenses/>.
 ***************************************************************************/

#include "ttkmoduleexport.h"

#if defined(_MSC_VER)
using xxtea_uint = unsigned __int32;
#  pragma warning(disable:4267)
#else
#  if defined(__FreeBSD__) && __FreeBSD__ < 5
#    include <inttypes.h>
#  else
#    include <stdint.h>
#  endif
using xxtea_uint = uint32_t;
#endif

class TTK_MODULE_EXPORT TTKCryptographicHash
{
    TTK_DECLARE_MODULE(TTKCryptographicHash)
public:
    TTKCryptographicHash();

    QString encrypt(const QString &data, const QString &key);
    QString decrypt(const QString &data, const QString &key);

private:
    TTKString xxteaEncrypt(const TTKString &data, const TTKString &key);
    QString xxteaEncrypt(const QString &data, const QString &key);

    TTKString xxteaDecrypt(const TTKString &data, const TTKString &key);
    QString xxteaDecrypt(const QString &data, const QString &key);

    uchar *doXxteaEncrypt(uchar *data, xxtea_uint len, uchar *key, xxtea_uint *retLength);
    uchar *doXxteaDecrypt(uchar *data, xxtea_uint len, uchar *key, xxtea_uint *retLength);
    void xxteaUintEncrypt(xxtea_uint *v, xxtea_uint len, xxtea_uint *k);
    void xxteaUintDecrypt(xxtea_uint *v, xxtea_uint len, xxtea_uint *k);
    uchar *fixKeyLength(uchar *key, xxtea_uint keyLength);
    xxtea_uint *xxteaToUintArray(uchar *data, xxtea_uint len, int includeLength, xxtea_uint *retLength);
    uchar *xxteaToByteArray(xxtea_uint *data, xxtea_uint len, int includeLength, xxtea_uint *retLength);

    uchar *xxteaEncrypt(uchar *data, xxtea_uint dataLength, uchar *key, xxtea_uint keyLength, xxtea_uint *retLengthgth);
    uchar *xxteaDecrypt(uchar *data, xxtea_uint dataLength, uchar *key, xxtea_uint keyLength, xxtea_uint *retLengthgth);

};

#endif // TTKCRYPTOGRAPHICHASH_H