Java实现Des加密（不用加载包），有完整S盒子。
部分代码如下：
ackage desJava;
import java.util.*;
public class Des {
byte[] bytekey;
public Des(String strKey) {
this.bytekey = strKey.getBytes();
}// 声明常量字节数组
private static final int[] IP = { 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 }; // 64
private static final int[] IP_1 = { 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, 34, 2, 42, 10, 50, 18, 58, 26, 33, 1, 41, 9, 49,
17, 57, 25 }; // 64
private static final int[] PC_1 = { 57, 49, 41, 33, 25, 17, 9, 1, 58, 50,
42, 34, 26, 18, 10, 2, 59, 51, 43, 35, 27, 19, 11, 3, 60, 52, 44,
36, 63, 55, 47, 39, 31, 23, 15, 7, 62, 54, 46, 38, 30, 22, 14, 6,
61, 53, 45, 37, 29, 21, 13, 5, 28, 20, 12, 4 }; // 56
private static final int[] PC_2 = { 14, 17, 11, 24, 1, 5, 3, 28, 15, 6, 21,
10, 23, 19, 12, 4, 26, 8, 16, 7, 27, 20, 13, 2, 41, 52, 31, 37, 47,
55, 30, 40, 51, 45, 33, 48, 44, 49, 39, 56, 34, 53, 46, 42, 50, 36,
29, 32 }; // 48
private static final int[] E = { 32, 1, 2, 3, 4, 5, 4, 5, 6, 7, 8, 9, 8, 9,
10, 11, 12, 13, 12, 13, 14, 15, 16, 17, 16, 17, 18, 19, 20, 21, 20,
21, 22, 23, 24, 25, 24, 25, 26, 27, 28, 29, 28, 29, 30, 31, 32, 1 }; // 48
private static final int[] P = { 16, 7, 20, 21, 29, 12, 28, 17, 1, 15, 23,
26, 5, 18, 31, 10, 2, 8, 24, 14, 32, 27, 3, 9, 19, 13, 30, 6, 22,
11, 4, 25 }; // 32
private static final int[][][] S_Box = {//S-盒
{// S_Box[1]
{ 14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7 },
{ 0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8 },
{ 4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0 },
{ 15, 12, 8, 2
2019-12-21 19:56:39
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在网上找了好多天，终于找到了这个DELPHI/PHP/JS通用的DES加密解密模块
DES模块已完全调试正常，具体使用方法请参考程序代码
2019-12-21 19:55:14
198KB
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简单实用可以进行修改！数字签字和认证机构是电子商务的核心技术。数字签名作为目前Internet中电子商务重要的技术，不断地进行改进，标准化。本文从数字签名的意义出发，详细介绍了数字签名中涉及到的内容与算法，并自行结合进行改进。
2019-12-21 19:55:09
3.69MB
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C语言实现——应用分组密码体制的基本原理，实现DES加解密，并分析 DES 的雪崩性质，对DES加密进行差分分析，并利用自己设计的S盒进行加密
2019-12-21 19:52:57
863KB
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