{ 13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9 },
{ 10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4 },
{ 3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14 } },
{ // S_Box[5] OK
{ 2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9 },
{ 14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6 },
{ 4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14 },
{ 11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3 } },
{ // S_Box[6] OK
{ 12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11 },
{ 10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8 },
{ 9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6 },
{ 4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13 } },
{ // S_Box[7] OK
{ 4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1 },
{ 13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6 },
{ 1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2 },
{ 6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12 } },
{ // S_Box[8] OK
{ 13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7 },
{ 1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2 },
{ 7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8 },
{ 2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11 } } };
/**
* 循环左移位数 1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1
*/
private static final int[] LeftMove = { 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2,
2, 2, 2, 1 }; // 左移位置列表
// 构造函数，初始化密钥
public DES(String key) {
this.key = key;
}
/**
*
* @param des_key
* 8个字节的密钥字节数组
* @param des_data
* 8个字节的数据字节数组
* @param flag
* 1或0，1为加密，0为解密
* @return 8个字节的字节数组
*/
private byte[] UnitDes(byte[] des_key, byte[] des_data, int flag) {
// 检测输入参数格式是否正确，错误直接返回空值（null）
if ((des_key.length != 8) || (des_data.length != 8)
throw new RuntimeException("Data Format Error !");
}
int flags = flag;
// 二进制加密数据
int[] encryptdata = new int[64];
// 加密操作完成后的字节数组
byte[] EncryptCode = new byte[8];
encryptdata = ReadDataToBirnaryIntArray(des_data);
// 执行加密解密操作
EncryptCode = Encrypt(encryptdata, flags, KeyArray);
return EncryptCode;
}
/**
* 初试化密钥为二维密钥数组
*
* @param key
* int[64]二进制的密钥数组
* @param keyarray
* new int[16][48]
*/
private void KeyInitialize(int[] key, int[][] keyarray) {
int i;
int j;
int[] K0 = new int[56];
// 特别注意：xxx[IP[i]-1]等类似变换
for (i = 0; i < 56; i++) {
K0[i] = key[PC_1[i] - 1]; // 密钥进行PC-1变换
}
for (i = 0; i < 16; i++) {
LeftBitMove(K0, LeftMove[i]);
// 特别注意：xxx[IP[i]-1]等类似变换
for (j = 0; j < 48; j++) {
keyarray[i][j] = K0[PC_2[j] - 1]; // 生成子密钥keyarray[i][j]
}
}
}
/**
* 执行加密解密操作
*
* @param timeData
* (int[64])二进制加密数据
* @param flag
* 1或0，1为加密，0为解密
* @param keyarray
* new int[1