File indexing completed on 2024-06-16 03:53:03

 /*
     This file is part of the KDE project
     SPDX-FileCopyrightText: 2001 George Staikos <staikos@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #ifndef BLOCKCIPHER_H
 #define BLOCKCIPHER_H
 
 #include "kwalletbackend_export.h"
 
 /* @internal
  */
 class KWALLETBACKEND_EXPORT BlockCipher
 {
 public:
     BlockCipher();
     virtual ~BlockCipher();
 
     /*
      *  Return the current blocksize in bytes.
      */
     int blockSize() const;
 
     /*
      *  Set the encryption key to key.  Return true on success.
      */
     virtual bool setKey(void *key, int bitlength) = 0;
 
     /*
      *  Get the required (or if it's variable, then the maximum) key
      *  length for this cipher in bits.
      */
     virtual int keyLen() const = 0;
 
     /*
      *  True if the key is of a variable length.  In this case,
      *  getKeyLen() will return the maximum length.
      */
     virtual bool variableKeyLen() const = 0;
 
     /*
      *  True if all settings are good and we are ready to encrypt.
      */
     virtual bool readyToGo() const = 0;
 
     /*
      *  Encrypt the block.  Returns the number of bytes successfully
      *  encrypted.  Can return -1 on error.
      */
     virtual int encrypt(void *block, int len) = 0;
 
     /*
      *  Decrypt the block.  Returns as does encrypt();
      */
     virtual int decrypt(void *block, int len) = 0;
 
 protected:
     int _blksz;
     int _keylen; // in bits
 };
 
 #endif // BLOCKCIPHER_H