Java实现Des加密（不用加载包）

Java实现Des加密（不用加载包）
Java实现Des加密（不用加载包），有完整S盒子。
部分代码如下：ackagedesJava;importjava.util.*;publicclassDes{ byte[]bytekey; publicDes(StringstrKey){ this.bytekey=strKey.getBytes(); }//声明常量字节数组 privatestaticfinalint[]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 privatestaticfinalint[]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 privatestaticfinalint[]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 privatestaticfinalint[]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 privatestaticfinalint[]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 privatestaticfinalint[]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 privatestaticfinalint[][][]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 本软件ID:9710313