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1 | /********************************************************************* |
2 | * Filename: blowfish.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 Blowfish implementation. |
7 | *********************************************************************/ |
8 | |
9 | #ifndef BLOWFISH_H |
10 | #define BLOWFISH_H |
11 | |
12 | /*************************** HEADER FILES ***************************/ |
13 | #include <stddef.h> |
14 | |
15 | /****************************** MACROS ******************************/ |
16 | #define BLOWFISH_BLOCK_SIZE 8 // Blowfish operates on 8 bytes at a time |
17 | |
18 | /**************************** DATA TYPES ****************************/ |
19 | typedef unsigned char BYTE; // 8-bit byte |
20 | typedef unsigned int WORD; // 32-bit word, change to "long" for 16-bit machines |
21 | |
22 | typedef struct { |
23 | WORD p[18]; |
24 | WORD s[4][256]; |
25 | } BLOWFISH_KEY; |
26 | |
27 | /*********************** FUNCTION DECLARATIONS **********************/ |
28 | void blowfish_key_setup(const BYTE user_key[], BLOWFISH_KEY *keystruct, size_t len); |
29 | void blowfish_encrypt(const BYTE in[], BYTE out[], const BLOWFISH_KEY *keystruct); |
30 | void blowfish_decrypt(const BYTE in[], BYTE out[], const BLOWFISH_KEY *keystruct); |
31 | |
32 | #endif // BLOWFISH_H |