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/*********************************************************************
* Filename: blowfish.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 Blowfish implementation.
*********************************************************************/
#ifndef BLOWFISH_H
#define BLOWFISH_H
/*************************** HEADER FILES ***************************/
#include <stddef.h>
/****************************** MACROS ******************************/
#define BLOWFISH_BLOCK_SIZE 8 // Blowfish operates on 8 bytes at a time
/**************************** DATA TYPES ****************************/
typedef unsigned char BYTE; // 8-bit byte
typedef unsigned int WORD; // 32-bit word, change to "long" for 16-bit machines
typedef struct {
WORD p[18];
WORD s[4][256];
} BLOWFISH_KEY;
/*********************** FUNCTION DECLARATIONS **********************/
void blowfish_key_setup(const BYTE user_key[], BLOWFISH_KEY *keystruct, size_t len);
void blowfish_encrypt(const BYTE in[], BYTE out[], const BLOWFISH_KEY *keystruct);
void blowfish_decrypt(const BYTE in[], BYTE out[], const BLOWFISH_KEY *keystruct);
#endif // BLOWFISH_H
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