#ifndef _ARC4_H_5f57b099_
#define _ARC4_H_5f57b099_

/* ARC4_STATE is an encryption engine's state. */

typedef struct {
	  unsigned char s[258];
	  } ARC4_STATE;

/* Interfaces */

/* arc4_init initializes a new ARC4_STATE. */
extern void arc4_init(ARC4_STATE *);

/* arc4_setkey re-keys an ARC4_STATE. */
extern void arc4_setkey(ARC4_STATE *, const void *, unsigned int, unsigned int);

/* arc4_crypt does encryption/decryption.
   The data buffers may be the same. */
extern void arc4_crypt(ARC4_STATE *, const void *, unsigned int, void *);

#endif