/*****************************************************************
说明：该 Word 文档共有 12 页，其中 1-3 页为 des_encode.h 文件的源代码，
4-10 页为 des.cpp 文件的源代码，11-12 页为 DES.java 文件的源代码
******************************************************************/
/*
* File: des_encode.H
* Author: Unknown
* Modified by Allen Yang
* Created on 2009.9.25
*/
#ifndef _DES_ENCODE_H
#define _DES_ENCODE_H
void Test(); //Used for testing DES
void Encode(int *str, int *keychar); //Encryption Function, Arguments: Plaintext(8 bytes), Key(8
bytes)
void Decode(int *str, int *keychar); //Decryption Function, Arguments: Ciphertext(8 bytes),
Key(8 bytes)
void keyBuild(int *keychar); //Generate Key
void StrtoBin(int *midkey, int *keychar); //Convert Int Array into Binary, Called by keyBuild
Function
void keyCreate(int *midkey2, int movebit, int i); //56 Bit -> 48 Bit Key Mapping, Called by
keyBuild Function
void EncodeData(int *lData, int *rData, int *str); //Initial Permutation
void DecodeData(int *str, int *lData, int *rData); //Inverse Initial Permutation
void F(int *rData, int *key); //F Function
void Expand(int *rData, int *rDataP); //Expand Function
void ExchangeS(int *rDataP, int *rData); //S Change
void FillBin(int *rData, int n, int s); //Convert Int into Binary, Called by S Change Function
void ExchangeP(int *rData); //P Change
int IP1[] = { //Initial Permutation Array
58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4,
62, 54, 46, 38, 30, 22, 14, 6, 64, 56, 48, 40, 32, 24, 16, 8,
57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19, 11, 3,
61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7,};
int IP2[] = { //Inverse Initial Permutation Array
40, 8, 48, 16, 56, 24, 64, 32, 39, 7, 47, 15, 55, 23, 63, 31,
38, 6, 46, 14, 54, 22, 62, 30, 37, 5, 45, 13, 53, 21, 61, 29,
36, 4, 44, 12, 52, 20, 60, 28, 35, 3, 43, 11, 51, 19, 59, 27,
