blowfish.h File Reference

Blowfish block cipher. More...

#include "beecrypt.h"
#include "blowfishopt.h"

Go to the source code of this file.

Data Structures
struct	blowfishParam
	Holds all the parameters necessary for the Blowfish cipher. More...
Defines
#define	BLOWFISHROUNDS   16
#define	BLOWFISHPSIZE   (BLOWFISHROUNDS+2)
Functions
int	blowfishSetup (blowfishParam *, const byte *, size_t, cipherOperation)
	The function performs the cipher's key expansion.
int	blowfishSetIV (blowfishParam *, const byte *)
	This function sets the Initialization Vector.
int	blowfishEncrypt (blowfishParam *, uint32_t *, const uint32_t *)
	This function performs the Blowfish encryption; it encrypts one block of 64 bits.
int	blowfishDecrypt (blowfishParam *, uint32_t *, const uint32_t *)
	This function performs the Blowfish decryption; it Rderypts one block of 64 bits.
uint32_t *	blowfishFeedback (blowfishParam *)
Variables
const blockCipher	blowfish
	Holds the full API description of the Blowfish algorithm.

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Detailed Description

Blowfish block cipher.

For more information on this blockcipher, see: "Applied Cryptography", second edition Bruce Schneier Wiley & Sons

Also see http://www.counterpane.com/blowfish.html

Author:

Bob Deblier <bob.deblier@pandora.be>

Definition in file blowfish.h.

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Define Documentation

#define BLOWFISHPSIZE   (BLOWFISHROUNDS+2)

Definition at line 41 of file blowfish.h.

#define BLOWFISHROUNDS   16

Definition at line 40 of file blowfish.h.

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Function Documentation

blowfishDecrypt (  blowfishParam *  bp, uint32_t *  dst, const uint32_t *  src )

This function performs the Blowfish decryption; it Rderypts one block of 64 bits. Parameters: bp  The cipher's parameter block. dst  The cleartext; should be aligned on 32-bit boundary. src  The ciphertext; should be aligned on 32-bit boundary. Return values: 0  on success.

blowfishEncrypt (  blowfishParam *  bp, uint32_t *  dst, const uint32_t *  src )

This function performs the Blowfish encryption; it encrypts one block of 64 bits. Parameters: bp  The cipher's parameter block. dst  The ciphertext; should be aligned on 32-bit boundary. src  The cleartext; should be aligned on 32-bit boundary. Return values: 0  on success.

uint32_t* blowfishFeedback (  blowfishParam *   )

int blowfishSetIV (  blowfishParam *  bp, const byte *  iv )

This function sets the Initialization Vector. Note: This function is only useful in block chaining or feedback modes. Parameters: bp  The cipher's parameter block. iv  The initialization vector; may be null. Return values: 0  on success.

int blowfishSetup (  blowfishParam *  bp, const byte *  key, size_t  keybits, cipherOperation  op )

The function performs the cipher's key expansion. Parameters: bp  The cipher's parameter block. key  The key value. keybits  The number of bits in the key; legal values are: 32 to 448, in multiples of 8. op  ENCRYPT or DECRYPT. Return values: 0  on success. -1  on failure.

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Variable Documentation

blowfish

Holds the full API description of the Blowfish algorithm.

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