/*
 * Header file for the C++ ICE encryption class.
 *
 * Written by Matthew Kwan - July 1996
 */

#ifndef _IceKey_H
#define _IceKey_H

class IceSubkey;

class IceKey {
    public:
  IceKey (int n);
  ~IceKey ();

  void    set (const unsigned char *key);

  unsigned char  *encrypt (const unsigned char *plaintext,
          unsigned char *ciphertext) const;

  unsigned char  *decrypt (const unsigned char *ciphertext,
          unsigned char *plaintext) const;

  int    keySize () const;

  int    blockSize () const;

    private:
  void    scheduleBuild (unsigned short *k, int n,
              const int *keyrot);

  int    _size;
  int    _rounds;
  IceSubkey  *_keysched;
};

#endif