?? calculation.java
字號:
/* * To change this template, choose Tools | Templates * and open the template in the editor. */package s_des;/** * * @author Administrator */public class Calculation {private int[][] S0; private int[][] S1; public int[] plain; public int[] IP; public int[] step1EP; public int[] step1XOR1; public int[] step1S; public int[] step1P4; public int[] step1XOR2; public int[] change; public int[] step2EP; public int[] step2XOR1; public int[] step2S; public int[] step2P4; public int[] step2XOR2; public int[] cipherText; Calculation(){ plain = new int[8]; IP = new int[8]; step1EP = new int[8]; step1XOR1 = new int[8]; step1S = new int[4]; step1P4 = new int[4]; step1XOR2 = new int[4]; change = new int[8]; step2EP = new int[8]; step2XOR1 = new int[8]; step2S = new int[4]; step2P4 = new int[4]; step2XOR2 = new int[4]; cipherText = new int[8]; S0 = new int[4][4]; S0[0][0] = 1; S0[0][1] = 0; S0[0][2] = 3; S0[0][3] = 2; S0[1][0] = 3; S0[1][1] = 2; S0[1][2] = 1; S0[1][3] = 0; S0[2][0] = 0; S0[2][1] = 2; S0[2][2] = 1; S0[2][3] = 3; S0[3][0] = 3; S0[3][1] = 1; S0[3][2] = 3; S0[3][3] = 2; S1 = new int[4][4]; S1[0][0] = 0; S1[0][1] = 1; S1[0][2] = 2; S1[0][3] = 3; S1[1][0] = 2; S1[1][1] = 0; S1[1][2] = 1; S1[1][3] = 3; S1[2][0] = 3; S1[2][1] = 0; S1[2][2] = 1; S1[2][3] = 0; S1[3][0] = 2; S1[3][1] = 1; S1[3][2] = 0; S1[3][3] = 3; } public void calculateCipher(int[] inf,int[] K1,int[] K2){ getInf(inf,plain); step1IP(plain,IP); step1EP(IP,step1EP); step1XOR1(step1EP,step1XOR1,K1); step1S(step1XOR1,step1S); step1P4(step1S,step1P4); step1XOR2(IP,step1P4,step1XOR2); step1Switch(IP,step1XOR2,change); step2EP(change,step2EP); step2XOR1(step2EP,step2XOR1,K2); step2S(step2XOR1,step2S); step2P4(step2S,step2P4); step2XOR2(change,step2P4,step2XOR2); step2IP(change,step2XOR2,cipherText); disPlay(plain);disPlay(IP); disPlay(step1EP); disPlay(step1XOR1);disPlay(step1S);disPlay(step1P4); disPlay(step1XOR2);disPlay(change); disPlay(step2EP); disPlay(step2XOR1);disPlay(step2S);disPlay(step2P4); disPlay(step2XOR2);disPlay(cipherText); } public void calculatePlain(int[] inf,int[] K1,int[] K2){ getInf(inf,cipherText); step1IP(cipherText,IP); step1EP(IP,step1EP); step1XOR1(step1EP,step1XOR1,K2); step1S(step1XOR1,step1S); step1P4(step1S,step1P4); step1XOR2(IP,step1P4,step1XOR2); step1Switch(IP,step1XOR2,change); step2EP(change,step2EP); step2XOR1(step2EP,step2XOR1,K1); step2S(step2XOR1,step2S); step2P4(step2S,step2P4); step2XOR2(change,step2P4,step2XOR2); step2IP(change,step2XOR2,plain); disPlay(plain);disPlay(IP); disPlay(step1EP); disPlay(step1XOR1);disPlay(step1S);disPlay(step1P4); disPlay(step1XOR2);disPlay(change); disPlay(step2EP); disPlay(step2XOR1);disPlay(step2S);disPlay(step2P4); disPlay(step2XOR2);disPlay(cipherText); } private void getInf(int[] inf ,int[] vary){ for(int i = 0; i < 8; i++)vary[i] = inf[i]; } private void step1IP(int[] inf ,int[] vary){ vary[0] = inf[1]; vary[1] = inf[5]; vary[2] = inf[2]; vary[3] = inf[0]; vary[4] = inf[3]; vary[5] = inf[7]; vary[6] = inf[4]; vary[7] = inf[6]; } private void step1EP(int[] inf, int[] vary){ int[] temp = new int[4]; for(int i = 0; i < 4; i++)temp[i] = inf[i + 4]; vary[0] = temp[3]; vary[1] = temp[0]; vary[2] = temp[1]; vary[3] = temp[2]; vary[4] = temp[1]; vary[5] = temp[2]; vary[6] = temp[3]; vary[7] = temp[0]; } private void step1XOR1(int[] inf,int[] vary,int[] K1){ for(int i = 0; i < 8; i++){ if(inf[i] == K1[i])vary[i] = 0; else vary[i] = 1; } } private void step1S(int[] inf,int[] vary){ int[] temp = new int[4]; if(inf[0] == 0 && inf[3] == 0) temp[0] = 0; if(inf[0] == 0 && inf[3] == 1) temp[0] = 1; if(inf[0] == 1 && inf[3] == 0) temp[0] = 2; if(inf[0] == 1 && inf[3] == 1) temp[0] = 3; if(inf[1] == 0 && inf[2] == 0) temp[1] = 0; if(inf[1] == 0 && inf[2] == 1) temp[1] = 1; if(inf[1] == 1 && inf[2] == 0) temp[1] = 2; if(inf[1] == 1 && inf[2] == 1) temp[1] = 3; if(inf[4] == 0 && inf[7] == 0) temp[2] = 0; if(inf[4] == 0 && inf[7] == 1) temp[2] = 1; if(inf[4] == 1 && inf[7] == 0) temp[2] = 2; if(inf[4] == 1 && inf[7] == 1) temp[2] = 3; if(inf[5] == 0 && inf[6] == 0) temp[3] = 0; if(inf[5] == 0 && inf[6] == 1) temp[3] = 1; if(inf[5] == 1 && inf[6] == 0) temp[3] = 2; if(inf[5] == 1 && inf[6] == 1) temp[3] = 3; int[] temp1 = new int[2]; temp1[0] = S0[temp[0]][temp[1]]; temp1[1] = S1[temp[2]][temp[3]]; if(temp1[0] == 0){ vary[0] = 0; vary[1] = 0; } if(temp1[0] == 1){ vary[0] = 0; vary[1] = 1; } if(temp1[0] == 2){ vary[0] = 1; vary[1] = 0; } if(temp1[0] == 3){ vary[0] = 1; vary[1] = 1; } if(temp1[1] == 0){ vary[2] = 0; vary[3] = 0; } if(temp1[1] == 1){ vary[2] = 0; vary[3] = 1; } if(temp1[1] == 2){ vary[2] = 1; vary[3] = 0; } if(temp1[1] == 3){ vary[2] = 1; vary[3] = 1; } } private void step1P4(int[] inf,int[] vary){ vary[0] = inf[1]; vary[1] = inf[3]; vary[2] = inf[2]; vary[3] = inf[0]; } private void step1XOR2(int[] inf1,int[] inf2,int[] vary){ for(int i = 0; i < 4; i++){ if(inf1[i] == inf2[i])vary[i] = 0; else vary[i] = 1; } } private void step1Switch(int[] inf1,int[] inf2,int[] vary){ for(int i = 0; i < 4; i++){ vary[i] = inf1[i+4]; vary[i+4] = inf2[i]; } } //step2 private void step2EP(int[] inf,int[] vary){ int[] temp = new int[4]; for(int i = 0; i < 4; i++)temp[i] = inf[i + 4]; vary[0] = temp[3]; vary[1] = temp[0]; vary[2] = temp[1]; vary[3] = temp[2]; vary[4] = temp[1]; vary[5] = temp[2]; vary[6] = temp[3]; vary[7] = temp[0]; } private void step2XOR1(int[] inf1,int[] vary,int[] K2){ for(int i = 0; i < 8; i++){ if(inf1[i] == K2[i])vary[i] = 0; else vary[i] = 1; } } private void step2S(int[] inf,int[] vary){ int[] temp = new int[4]; if(inf[0] == 0 && inf[3] == 0) temp[0] = 0; if(inf[0] == 0 && inf[3] == 1) temp[0] = 1; if(inf[0] == 1 && inf[3] == 0) temp[0] = 2; if(inf[0] == 1 && inf[3] == 1) temp[0] = 3; if(inf[1] == 0 && inf[2] == 0) temp[1] = 0; if(inf[1] == 0 && inf[2] == 1) temp[1] = 1; if(inf[1] == 1 && inf[2] == 0) temp[1] = 2; if(inf[1] == 1 && inf[2] == 1) temp[1] = 3; if(inf[4] == 0 && inf[7] == 0) temp[2] = 0; if(inf[4] == 0 && inf[7] == 1) temp[2] = 1; if(inf[4] == 1 && inf[7] == 0) temp[2] = 2; if(inf[4] == 1 && inf[7] == 1) temp[2] = 3; if(inf[5] == 0 && inf[6] == 0) temp[3] = 0; if(inf[5] == 0 && inf[6] == 1) temp[3] = 1; if(inf[5] == 1 && inf[6] == 0) temp[3] = 2; if(inf[5] == 1 && inf[6] == 1) temp[3] = 3; int[] temp1 = new int[2]; temp1[0] = S0[temp[0]][temp[1]]; temp1[1] = S1[temp[2]][temp[3]]; if(temp1[0] == 0){ vary[0] = 0; vary[1] = 0; } if(temp1[0] == 1){ vary[0] = 0; vary[1] = 1; } if(temp1[0] == 2){ vary[0] = 1; vary[1] = 0; } if(temp1[0] == 3){ vary[0] = 1; vary[1] = 1; } if(temp1[1] == 0){ vary[2] = 0; vary[3] = 0; } if(temp1[1] == 1){ vary[2] = 0; vary[3] = 1; } if(temp1[1] == 2){ vary[2] = 1; vary[3] = 0; } if(temp1[1] == 3){ vary[2] = 1; vary[3] = 1; } } private void step2P4(int[] inf,int[] vary){ vary[0] = inf[1]; vary[1] = inf[3]; vary[2] = inf[2]; vary[3] = inf[0]; } private void step2XOR2(int[] inf1,int[] inf2,int[] vary){ for(int i = 0; i < 4; i++){ if(inf1[i] == inf2[i])vary[i] = 0; else vary[i] = 1; } } private void step2IP(int[] inf1,int[] inf2,int[] vary){ int[] temp = new int[8]; for(int i = 0; i < 4;i++){ temp[i + 4] = inf1[i + 4]; temp[i] = inf2[i]; } vary[0] = temp[3]; vary[1] = temp[0]; vary[2] = temp[2]; vary[3] = temp[4]; vary[4] = temp[6]; vary[5] = temp[1]; vary[6] = temp[7]; vary[7] = temp[5]; } private void disPlay(int[] inf){ for(int i = 0;i < inf.length;i++){ System.out.print(" " + inf[i]); } System.out.println(); }}?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -