# arc4.h File Reference

## Detailed Description

Copyright (C) 2006-2009, Paul Bakker <polarssl_maintainer at polarssl.org> All rights reserved.

Joined copyright on original XySSL code with: Christophe Devine

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.

Go to the source code of this file.

## Data Structures
struct | arc4_context
| ARC4 context structure. More...
## Functions
void | arc4_crypt (arc4_context *ctx, unsigned char *buf, int buflen)
| ARC4 cipher function.
int | arc4_self_test (int verbose)
void | arc4_setup (arc4_context *ctx, unsigned char *key, int keylen)
| ARC4 key schedule.

## Function Documentation

void arc4_crypt | ( | arc4_context * | ctx,
|  | unsigned char * | buf,
|  | int | buflen |
| ) |  |  |

ARC4 cipher function.

Parameters:

  | ctx | ARC4 context
  | buf | buffer to be processed
  | buflen | amount of data in buf

int arc4_self_test | ( | int | verbose | ) |

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

ARC4 key schedule.

Parameters:

  | ctx | ARC4 context to be initialized
  | key | the secret key
  | keylen | length of the key