33 lines
1.3 KiB
C
33 lines
1.3 KiB
C
/*********************************************************************
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* Filename: blowfish.h
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* Author: Brad Conte (brad AT bradconte.com)
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* Copyright:
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* Disclaimer: This code is presented "as is" without any guarantees.
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* Details: Defines the API for the corresponding Blowfish implementation.
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*********************************************************************/
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#ifndef BLOWFISH_H
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#define BLOWFISH_H
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/*************************** HEADER FILES ***************************/
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#include <stddef.h>
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/****************************** MACROS ******************************/
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#define BLOWFISH_BLOCK_SIZE 8 // Blowfish operates on 8 bytes at a time
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/**************************** DATA TYPES ****************************/
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typedef unsigned char BYTE; // 8-bit byte
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typedef unsigned int WORD; // 32-bit word, change to "long" for 16-bit machines
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typedef struct {
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WORD p[18];
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WORD s[4][256];
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} BLOWFISH_KEY;
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/*********************** FUNCTION DECLARATIONS **********************/
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void blowfish_key_setup(const BYTE user_key[], BLOWFISH_KEY *keystruct, size_t len);
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void blowfish_encrypt(const BYTE in[], BYTE out[], const BLOWFISH_KEY *keystruct);
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void blowfish_decrypt(const BYTE in[], BYTE out[], const BLOWFISH_KEY *keystruct);
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#endif // BLOWFISH_H
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