/* 
 * Cryptographic API.
 *
 * Blowfish Cipher Algorithm, by Bruce Schneier.
 * http://www.counterpane.com/blowfish.html
 * 
 * Adapated from Kerneli implementation.
 * 
 * Copyright (c) Herbert Valerio Riedel <hvr@hvrlab.org>
 * Copyright (c) Kyle McMartin <kyle@debian.org>
 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 */

#ifndef _BLOWFISH_
#define _BLOWFISH_

#include "uint.h"

#define BF_BLOCK_SIZE 8

/* key length from 32 to 448 bits, but no checks are made */
#define BF_MIN_KEY_SIZE 4
#define BF_MAX_KEY_SIZE 56

struct blowfish_ctx {
	u32 p[18];
	u32 s[1024];
};

/* 
 * Calculates the blowfish S and P boxes for encryption and decryption.
 */
int blowfish_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags);

void blowfish_encrypt(void *cx, u8 *dst, const u8 *src);

void blowfish_decrypt(void *cx, u8 *dst, const u8 *src);


/* memcpy */
/*
void blowfish_encrypt_fake(void *cx, u8 *dst, const u8 *src);
void blowfish_decrypt_fake(void *cx, u8 *dst, const u8 *src);
*/

#endif