source code documentation

des.h File Reference

Detailed Description

Header of DES and 3DES cipher.

Author:: Niklaus Schild <n.schild@gmx.ch>

This document is part of embedded IPsec
Copyright (c) 2003 Niklaus Schild and Christian Scheurer, HTI Biel/Bienne
All rights reserved.
This file contains code from the OpenSSL Project
portions Copyright (c) 1998-2003 OpenSSL (www.openssl.org)

Definition in file des.h.

#include "ipsec/types.h"

Go to the source code of this file.

Data Structures

struct DES_ks

Defines

#define DES_LONG   __u32

#define DES_ENCRYPT   1

#define DES_DECRYPT   0

Typedefs

typedef unsigned char DES_cblock [8]

typedef const unsigned char const_DES_cblock [8]

typedef DES_ks DES_key_schedule

Functions

int DES_set_key_checked (const_DES_cblock *key, DES_key_schedule *schedule)

void DES_set_key_unchecked (const_DES_cblock *key, DES_key_schedule *schedule)

void cipher_3des_cbc (unsigned char *, int, unsigned char *, unsigned char *, int, unsigned char *)

Define Documentation

#define DES_DECRYPT 0

defines decryption for the des function
Definition at line 69 of file des.h.

#define DES_ENCRYPT 1

defines encryption for the des function
Definition at line 68 of file des.h.

#define DES_LONG __u32

Definition at line 54 of file des.h.

Typedef Documentation

typedef const unsigned char const_DES_cblock[8]

Definition at line 57 of file des.h.

typedef unsigned char DES_cblock[8]

Definition at line 56 of file des.h.

typedef struct DES_ks DES_key_schedule

Function Documentation

void cipher_3des_cbc ( unsigned char * text,

int text_len,

unsigned char * key,

unsigned char * iv,

int mode,

unsigned char * output

)

3DES-CBC function calculates a digest from a given data buffer and a given key.

Parameters:

text pointer to input data

text_len length of input data

key pointer to encryption key (192 bits)

iv initialization vector

mode defines whether encryption or decryption should be performed

output en- or decrypted input data

Returns:
void

Definition at line 1067 of file des.c.

int DES_set_key_checked ( const_DES_cblock * key,

DES_key_schedule * schedule

)

void DES_set_key_unchecked ( const_DES_cblock * key,

DES_key_schedule * schedule

)