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/*********************************************************************
* 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
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