30 lines
1.2 KiB
C
30 lines
1.2 KiB
C
/*********************************************************************
|
|
* Filename: arcfour.h
|
|
* Author: Brad Conte (brad AT bradconte.com)
|
|
* Copyright:
|
|
* Disclaimer: This code is presented "as is" without any guarantees.
|
|
* Details: Defines the API for the corresponding ARCFOUR implementation.
|
|
*********************************************************************/
|
|
|
|
#ifndef ARCFOUR_H
|
|
#define ARCFOUR_H
|
|
|
|
/*************************** HEADER FILES ***************************/
|
|
#include <stddef.h>
|
|
|
|
/**************************** DATA TYPES ****************************/
|
|
typedef unsigned char BYTE; // 8-bit byte
|
|
|
|
/*********************** FUNCTION DECLARATIONS **********************/
|
|
// Input: state - the state used to generate the keystream
|
|
// key - Key to use to initialize the state
|
|
// len - length of key in bytes (valid lenth is 1 to 256)
|
|
void arcfour_key_setup(BYTE state[], const BYTE key[], int len);
|
|
|
|
// Pseudo-Random Generator Algorithm
|
|
// Input: state - the state used to generate the keystream
|
|
// out - Must be allocated to be of at least "len" length
|
|
// len - number of bytes to generate
|
|
void arcfour_generate_stream(BYTE state[], BYTE out[], size_t len);
|
|
|
|
#endif // ARCFOUR_H
|