kolibrios/programs/develop/ktcc/trunk/libc/include/cryptal/des.h
superturbocat2001 14e3d78c64 - Changed libgb assembly and added libcryptal (implementation of cryptoalgorithms from Brad Conte).
- Changed build libgb.
- Added memory.h for compatibility.

git-svn-id: svn://kolibrios.org@8367 a494cfbc-eb01-0410-851d-a64ba20cac60
2020-12-11 17:07:49 +00:00

38 lines
1.4 KiB
C

/*********************************************************************
* Filename: des.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 DES implementation.
Note that encryption and decryption are defined by how
the key setup is performed, the actual en/de-cryption is
performed by the same function.
*********************************************************************/
#ifndef DES_H
#define DESH
/*************************** HEADER FILES ***************************/
#include <stddef.h>
/****************************** MACROS ******************************/
#define DES_BLOCK_SIZE 8 // DES 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 enum {
DES_ENCRYPT,
DES_DECRYPT
} DES_MODE;
/*********************** FUNCTION DECLARATIONS **********************/
void des_key_setup(const BYTE key[], BYTE schedule[][6], DES_MODE mode);
void des_crypt(const BYTE in[], BYTE out[], const BYTE key[][6]);
void three_des_key_setup(const BYTE key[], BYTE schedule[][16][6], DES_MODE mode);
void three_des_crypt(const BYTE in[], BYTE out[], const BYTE key[][16][6]);
#endif // DES_H