ce188d4d |
1 | /********************************************************************* |
2 | * Filename: arcfour.h |
3 | * Author: Brad Conte (brad AT bradconte.com) |
4 | * Copyright: |
5 | * Disclaimer: This code is presented "as is" without any guarantees. |
6 | * Details: Defines the API for the corresponding ARCFOUR implementation. |
7 | *********************************************************************/ |
8 | |
9 | #ifndef ARCFOUR_H |
10 | #define ARCFOUR_H |
11 | |
12 | /*************************** HEADER FILES ***************************/ |
13 | #include <stddef.h> |
14 | |
15 | /**************************** DATA TYPES ****************************/ |
16 | typedef unsigned char BYTE; // 8-bit byte |
17 | |
18 | /*********************** FUNCTION DECLARATIONS **********************/ |
19 | // Input: state - the state used to generate the keystream |
20 | // key - Key to use to initialize the state |
21 | // len - length of key in bytes (valid lenth is 1 to 256) |
22 | void arcfour_key_setup(BYTE state[], const BYTE key[], int len); |
23 | |
24 | // Pseudo-Random Generator Algorithm |
25 | // Input: state - the state used to generate the keystream |
26 | // out - Must be allocated to be of at least "len" length |
27 | // len - number of bytes to generate |
28 | void arcfour_generate_stream(BYTE state[], BYTE out[], size_t len); |
29 | |
30 | #endif // ARCFOUR_H |