text: /****************************************************************************
  **
  ** Copyright (C) 2014 Jeremy Lainé <jeremy.laine@m4x.org>
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the QtNetwork module of the Qt Toolkit.
  **
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  ****************************************************************************/
  
  #include "qsslkey.h"
  #include "qsslkey_p.h"
  
  #include <CommonCrypto/CommonCrypto.h>
  
  QT_USE_NAMESPACE
  
  static QByteArray wrapCCCrypt(CCOperation ccOp,
                                QSslKeyPrivate::Cipher cipher,
                                const QByteArray &data,
                                const QByteArray &key, const QByteArray &iv)
  {
      int blockSize;
      CCAlgorithm ccAlgorithm;
      switch (cipher) {
      case QSslKeyPrivate::DesCbc:
          blockSize = kCCBlockSizeDES;
          ccAlgorithm = kCCAlgorithmDES;
          break;
      case QSslKeyPrivate::DesEde3Cbc:
          blockSize = kCCBlockSize3DES;
          ccAlgorithm = kCCAlgorithm3DES;
          break;
      case QSslKeyPrivate::Rc2Cbc:
          blockSize = kCCBlockSizeRC2;
          ccAlgorithm = kCCAlgorithmRC2;
          break;
      };
      size_t plainLength = 0;
      QByteArray plain(data.size() + blockSize, 0);
      CCCryptorStatus status = CCCrypt(
          ccOp, ccAlgorithm, kCCOptionPKCS7Padding,
          key.constData(), key.size(),
          iv.constData(),
          data.constData(), data.size(),
          plain.data(), plain.size(), &plainLength);
      if (status == kCCSuccess)
          return plain.left(plainLength);
      return QByteArray();
  }
  
  QByteArray QSslKeyPrivate::decrypt(Cipher cipher, const QByteArray &data, const QByteArray &key, const QByteArray &iv)
  {
      return wrapCCCrypt(kCCDecrypt, cipher, data, key, iv);
  }
  
  QByteArray QSslKeyPrivate::encrypt(Cipher cipher, const QByteArray &data, const QByteArray &key, const QByteArray &iv)
  {
      return wrapCCCrypt(kCCEncrypt, cipher, data, key, iv);
  }
  