initpsw.java

来自「S-DES加、解密程序」· Java 代码 · 共 112 行

/*
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 * and open the template in the editor.
 */

package s_des;

/**
 *
 * @author CJPHENRY
 */
public class InitPSW {

    /**
     * @param args the command line arguments
     */
    public int[] PSW;
    public int[] P10;
    public int[] LS1;
    public int[] K1;
    public int[] LS2;
    public int[] K2;
    
    InitPSW(){
        PSW = new int[10];
        P10 = new int[10];
        LS1 = new int[10];
        K1 = new int[8];
        LS2 = new int[10];
        K2 = new int[8];
    }
    public void calculate(int[] inf){
        setPSW(inf);
        setP10();
        LS1();
        createK1();
        LS2();
        createK2();
        disPlay(PSW);
        disPlay(P10);
        disPlay(LS1);
        disPlay(K1);
        disPlay(LS2);
        disPlay(K2);
    }
    private void setPSW(int[] inf){
        for(int i = 0; i < inf.length ;i++){
            PSW[i] = inf[i];
        }
    }    
    private void setP10(){
        P10[0] = PSW[2];
        P10[1] = PSW[4];
        P10[2] = PSW[1];
        P10[3] = PSW[6];
        P10[4] = PSW[3];
        P10[5] = PSW[9];
        P10[6] = PSW[0];
        P10[7] = PSW[8];
        P10[8] = PSW[7];
        P10[9] = PSW[5];
    }
    private void createK1(){
        K1[0] = LS1[5];
        K1[1] = LS1[2];
        K1[2] = LS1[6];
        K1[3] = LS1[3];
        K1[4] = LS1[7];
        K1[5] = LS1[4];
        K1[6] = LS1[9];
        K1[7] = LS1[8];
    }
    private void createK2(){
        K2[0] = LS2[5];
        K2[1] = LS2[2];
        K2[2] = LS2[6];
        K2[3] = LS2[3];
        K2[4] = LS2[7];
        K2[5] = LS2[4];
        K2[6] = LS2[9];
        K2[7] = LS2[8];
    }
    private void LS1(){        
        //LS1，左半密钥循环左移一位
        for(int i = 0; i < 4; i++)LS1[i] = P10[i+1];
        LS1[4] = P10[0];
        
        //LS1，右半密钥循环左移一位
        for(int i = 5; i < 9; i++)LS1[i] = P10[i+1];
        LS1[9] = P10[5];
    }
    private void LS2(){
        //LS2，左半密钥循环左移两位
        for(int i = 0; i < 3; i++)LS2[i] = LS1[i+2];
        LS2[3] = LS1[0];
        LS2[4] = LS1[1];
        
        //LS2，右半密钥循环左移两位
        for(int i = 5; i < 8; i++)LS2[i] = LS1[i+2];
        LS2[8] = LS1[5];
        LS2[9] = LS1[6];
    }
    
    private void disPlay(int[] inf){
        System.out.println(inf.length);
        for(int i = 0;i < inf.length;i++){
            System.out.print(" " + inf[i]);
        }
        System.out.println();
    }
}