blowfish.h File Reference

Blowfish block cipher. More...

#include "config.h"
#include <string.h>
#include <inttypes.h>

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Data Structures
struct	blowfish_context
	Blowfish context structure. More...
Defines
#define	BLOWFISH_ENCRYPT   1
#define	BLOWFISH_DECRYPT   0
#define	BLOWFISH_MAX_KEY   448
#define	BLOWFISH_MIN_KEY   32
#define	BLOWFISH_ROUNDS   16
#define	BLOWFISH_BLOCKSIZE   8
#define	POLARSSL_ERR_BLOWFISH_INVALID_KEY_LENGTH   -0x0016
	Invalid key length.
#define	POLARSSL_ERR_BLOWFISH_INVALID_INPUT_LENGTH   -0x0018
	Invalid data input length.
Functions
int	blowfish_setkey (blowfish_context *ctx, const unsigned char *key, unsigned int keysize)
	Blowfish key schedule.
int	blowfish_crypt_ecb (blowfish_context *ctx, int mode, const unsigned char input[BLOWFISH_BLOCKSIZE], unsigned char output[BLOWFISH_BLOCKSIZE])
	Blowfish-ECB block encryption/decryption.

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Detailed Description

Blowfish block cipher.

Copyright (C) 2012-2013, Brainspark B.V.

This file is part of PolarSSL (http://www.polarssl.org) Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>

All rights reserved.

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.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

Definition in file blowfish.h.

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Define Documentation

#define BLOWFISH_BLOCKSIZE   8

Definition at line 46 of file blowfish.h.

#define BLOWFISH_DECRYPT   0

Definition at line 42 of file blowfish.h.

Referenced by blowfish_crypt_cbc(), blowfish_crypt_cfb64(), and blowfish_crypt_ecb().

#define BLOWFISH_ENCRYPT   1

Definition at line 41 of file blowfish.h.

Referenced by blowfish_crypt_cfb64(), and blowfish_crypt_ctr().

#define BLOWFISH_MAX_KEY   448

Definition at line 43 of file blowfish.h.

Referenced by blowfish_setkey().

#define BLOWFISH_MIN_KEY   32

Definition at line 44 of file blowfish.h.

#define BLOWFISH_ROUNDS   16

Definition at line 45 of file blowfish.h.

Referenced by blowfish_dec(), blowfish_enc(), and blowfish_setkey().

#define POLARSSL_ERR_BLOWFISH_INVALID_INPUT_LENGTH   -0x0018

Invalid data input length.

Definition at line 49 of file blowfish.h.

Referenced by blowfish_crypt_cbc(), and polarssl_strerror().

#define POLARSSL_ERR_BLOWFISH_INVALID_KEY_LENGTH   -0x0016

Invalid key length.

Definition at line 48 of file blowfish.h.

Referenced by blowfish_setkey(), and polarssl_strerror().

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Function Documentation

int blowfish_crypt_ecb	(	blowfish_context *	ctx,
		int	mode,
		const unsigned char	input[BLOWFISH_BLOCKSIZE],
		unsigned char	output[BLOWFISH_BLOCKSIZE]
	)

Blowfish-ECB block encryption/decryption.

Parameters:

	ctx	Blowfish context
	mode	BLOWFISH_ENCRYPT or BLOWFISH_DECRYPT
	input	8-byte input block
	output	8-byte output block

Returns:

0 if successful

Definition at line 211 of file blowfish.c.

References blowfish_dec(), BLOWFISH_DECRYPT, blowfish_enc(), GET_UINT32_BE, and PUT_UINT32_BE.

Referenced by blowfish_crypt_cbc(), blowfish_crypt_cfb64(), blowfish_crypt_ctr(), and blowfish_crypt_ecb_wrap().

int blowfish_setkey	(	blowfish_context *	ctx,
		const unsigned char *	key,
		unsigned int	keysize
	)

Blowfish key schedule.

Parameters:

	ctx	Blowfish context to be initialized
	key	encryption key
	keysize	must be between 32 and 448 bits

Returns:

0 if successful, or POLARSSL_ERR_BLOWFISH_INVALID_KEY_LENGTH

Definition at line 154 of file blowfish.c.

References blowfish_enc(), BLOWFISH_MAX_KEY, BLOWFISH_ROUNDS, P, blowfish_context::P, POLARSSL_ERR_BLOWFISH_INVALID_KEY_LENGTH, S, and blowfish_context::S.

Referenced by blowfish_setkey_wrap().