mbed TLS library

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arc4.h File Reference

arc4.h File Reference

The ARCFOUR stream cipher. More...

Go to the source code of this file.

Data Structures

struct  arc4_context
 ARC4 context structure. More...

Functions

void arc4_init (arc4_context *ctx)
 Initialize ARC4 context.
void arc4_free (arc4_context *ctx)
 Clear ARC4 context.
void arc4_setup (arc4_context *ctx, const unsigned char *key, unsigned int keylen)
 ARC4 key schedule.
int arc4_crypt (arc4_context *ctx, size_t length, const unsigned char *input, unsigned char *output)
 ARC4 cipher function.
int arc4_self_test (int verbose)
 Checkup routine.

Detailed Description

The ARCFOUR stream cipher.

Copyright (C) 2006-2014, ARM Limited, All Rights Reserved

This file is part of mbed TLS (https://tls.mbed.org)

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 arc4.h.


Function Documentation

int arc4_crypt ( arc4_context ctx,
size_t  length,
const unsigned char *  input,
unsigned char *  output 
)

ARC4 cipher function.

Parameters:
ctxARC4 context
lengthlength of the input data
inputbuffer holding the input data
outputbuffer for the output data
Returns:
0 if successful

Definition at line 102 of file arc4.c.

void arc4_free ( arc4_context ctx )

Clear ARC4 context.

Parameters:
ctxARC4 context to be cleared

Definition at line 61 of file arc4.c.

void arc4_init ( arc4_context ctx )

Initialize ARC4 context.

Parameters:
ctxARC4 context to be initialized

Definition at line 56 of file arc4.c.

int arc4_self_test ( int  verbose )

Checkup routine.

Returns:
0 if successful, or 1 if the test failed

Definition at line 163 of file arc4.c.

void arc4_setup ( arc4_context ctx,
const unsigned char *  key,
unsigned int  keylen 
)

ARC4 key schedule.

Parameters:
ctxARC4 context to be setup
keythe secret key
keylenlength of the key, in bytes

Definition at line 72 of file arc4.c.