mainframe.java~292~

DES加密算法实例1

    rs="";
    mi=text.substring(0,8);
    text=text.substring(8);
    mitext="";
    for(int n=0;n<=7;n++){
    int c,temp;
    String str="";
     c=(byte)(mi.charAt(n));
//    System.out.println(c);
     while(c>0)
     {temp=c%2;
     if (temp==0){str='0'+str;}
     else{str="1"+str;}
     c=(c-temp)/2;
     }
    while(str.length()<8){str="0"+str;}
//     System.out.println(str);
     mitext=mitext+str;
    }

//System.out.println("mitext is "+mitext);
//System.out.println("mi is "+mi+"!");
//System.out.println(text+"!");
mitext="0"+mitext;
///////////////////////////
//////////////////////////

    ip=ip+
    mitext.charAt(58)+mitext.charAt(50)+mitext.charAt(42)+mitext.charAt(34)+mitext.charAt(26)+mitext.charAt(18)+mitext.charAt
    (10)+mitext.charAt(2)+
    mitext.charAt(60)+mitext.charAt(52)+mitext.charAt(44)+mitext.charAt(36)+mitext.charAt(28)+mitext.charAt(20)+mitext.charAt
    (12)+mitext.charAt(4)+
    mitext.charAt(62)+mitext.charAt(54)+mitext.charAt(46)+mitext.charAt(38)+mitext.charAt(30)+mitext.charAt(22)+mitext.charAt
    (14)+mitext.charAt(6)+
    mitext.charAt(64)+mitext.charAt(56)+mitext.charAt(48)+mitext.charAt(40)+mitext.charAt(32)+mitext.charAt(24)+mitext.charAt
    (16)+mitext.charAt(8)+
    mitext.charAt(57)+mitext.charAt(49)+mitext.charAt(41)+mitext.charAt(33)+mitext.charAt(25)+mitext.charAt(17)+mitext.charAt(9)
    +mitext.charAt(1)+
    mitext.charAt(59)+mitext.charAt(51)+mitext.charAt(43)+mitext.charAt(35)+mitext.charAt(27)+mitext.charAt(19)+mitext.charAt
    (11)+mitext.charAt(3)+
    mitext.charAt(61)+mitext.charAt(53)+mitext.charAt(45)+mitext.charAt(37)+mitext.charAt(29)+mitext.charAt(21)+mitext.charAt
    (13)+mitext.charAt(5)+
    mitext.charAt(63)+mitext.charAt(55)+mitext.charAt(47)+mitext.charAt(39)+mitext.charAt(31)+mitext.charAt(23)+mitext.charAt
    (15)+mitext.charAt(7);
//System.out.println("ip is "+ip);

li=ip.substring(0,32);
ri=ip.substring(32);
//System.out.println(li);
//System.out.println(ri);

li="0"+li;
ri="0"+ri;

for(int n=0;n<=15;n++)
{ re="";
  k="";
  rf="";
  rs="";
  rp="";
//System.out.println("li is "+li);
//System.out.println("ri is "+ri);
  re=re+
  ri.charAt(32)+ri.charAt(1)+ri.charAt(2)+ri.charAt(3)+ri.charAt(4)+ri.charAt(5)+
  ri.charAt(4)+ri.charAt(5)+ri.charAt(6)+ri.charAt(7)+ri.charAt(8)+ri.charAt(9)+
  ri.charAt(8)+ri.charAt(9)+ri.charAt(10)+ri.charAt(11)+ri.charAt(12)+ri.charAt(13)+
  ri.charAt(12)+ri.charAt(13)+ri.charAt(14)+ri.charAt(15)+ri.charAt(16)+ri.charAt(17)+
  ri.charAt(16)+ri.charAt(17)+ri.charAt(18)+ri.charAt(19)+ri.charAt(20)+ri.charAt(21)+
  ri.charAt(20)+ri.charAt(21)+ri.charAt(22)+ri.charAt(23)+ri.charAt(24)+ri.charAt(25)+
  ri.charAt(24)+ri.charAt(25)+ri.charAt(26)+ri.charAt(27)+ri.charAt(28)+ri.charAt(29)+
  ri.charAt(28)+ri.charAt(29)+ri.charAt(30)+ri.charAt(31)+ri.charAt(32)+ri.charAt(1);
//System.out.println("re is "+re);
  k=key[n];
//System.out.println(n+" key is "+k);
  for(int m=1;m<=48;m++)
  {if ((k.charAt(m-1)=='0')&&(re.charAt(m-1)=='0'))
  {rf=rf+"1";} else {rf=rf+"0";}   }
//System.out.println("rf is "+rf);



for(int z=1;z<=8;z++)
    {String sw="";
      switch  (z)
      { case 1: {sw=sw+rf.substring(0,6); break;}
       case 2: {sw=sw+rf.substring(6,12); break;}
       case 3: {sw=sw+rf.substring(12,18); break;}
       case 4: {sw=sw+rf.substring(18,24); break;}
       case 5: {sw=sw+rf.substring(24,30); break;}
       case 6: {sw=sw+rf.substring(30,36); break;}
       case 7: {sw=sw+rf.substring(36,42); break;}
       case 8: {sw=sw+rf.substring(42,48); break;}
      }
//      System.out.println(sw);
int a=0,b=0,c=0;
    if((sw.charAt(0)=='0')&&(sw.charAt(5)=='0')) {a=0;}
    if((sw.charAt(0)=='0')&&(sw.charAt(5)=='1')) {a=1;}
    if((sw.charAt(0)=='1')&&(sw.charAt(5)=='0')) {a=2;}
    if((sw.charAt(0)=='1')&&(sw.charAt(5)=='1')) {a=3;}

    if(sw.charAt(1)=='1'){b=b+8;}
    if(sw.charAt(2)=='1'){b=b+4;}
    if(sw.charAt(3)=='1'){b=b+2;}
    if(sw.charAt(4)=='1'){b=b+1;}
//System.out.println("a="+a+" b="+b);
    switch(z)
    { case 1:{c=s1[a][b];break;}
      case 2:{c=s2[a][b];break;}
      case 3:{c=s3[a][b];break;}
      case 4:{c=s4[a][b];break;}
      case 5:{c=s5[a][b];break;}
      case 6:{c=s6[a][b];break;}
      case 7:{c=s7[a][b];break;}
      case 8:{c=s8[a][b];break;}
    }
//System.out.println(n+": c="+c);
    switch (c)
    {
    case  0:{rs=rs+"0000";break;}
    case  1:{rs=rs+"0001";break;}
    case  2:{rs=rs+"0010";break;}
    case  3:{rs=rs+"0011";break;}
    case  4:{rs=rs+"0100";break;}
    case  5:{rs=rs+"0101";break;}
    case  6:{rs=rs+"0110";break;}
    case  7:{rs=rs+"0111";break;}
    case  8:{rs=rs+"1000";break;}
    case  9:{rs=rs+"1001";break;}
    case 10:{rs=rs+"1010";break;}
    case 11:{rs=rs+"1011";break;}
    case 12:{rs=rs+"1100";break;}
    case 13:{rs=rs+"1101";break;}
    case 14:{rs=rs+"1110";break;}
    case 15:{rs=rs+"1111";break;}
    }
//System.out.println("rs is "+rs);
    }
//System.out.println("rs is "+rs);

   rs="0"+rs;

   rp=rp+
   rs.charAt(16)+rs.charAt(7)+rs.charAt(20)+rs.charAt(21)+rs.charAt(29)+rs.charAt(12)+rs.charAt(28)+rs.charAt(17)+
   rs.charAt(1)+rs.charAt(15)+rs.charAt(23)+rs.charAt(26)+rs.charAt(5)+rs.charAt(18)+rs.charAt(31)+rs.charAt(10)+
   rs.charAt(2)+rs.charAt(8)+rs.charAt(24)+rs.charAt(14)+rs.charAt(32)+rs.charAt(27)+rs.charAt(3)+rs.charAt(9)+
   rs.charAt(19)+rs.charAt(13)+rs.charAt(30)+rs.charAt(6)+rs.charAt(22)+rs.charAt(11)+rs.charAt(4)+rs.charAt(25);
//System.out.println("rp is "+rp);
lj="";
rj="";
//System.out.println("rp is "+rp);
//System.out.println("li"+li);

       for(int p=1;p<=32;p++)
       {if ((rp.charAt(p-1)=='0')&&(li.charAt(p)=='0'))
        {rj=rj+"1";} else {rj=rj+"0";}   }
//System.out.println("rj is "+rj);
lj=ri.substring(0);
rj="0"+rj;
//System.out.println("lj is "+lj);
//System.out.println("rj is "+rj);

li=lj;
ri=rj;
//System.out.println("li is "+li);
//System.out.println("ri is "+ri);
}///16

String out="";
String outtext="";
out=li.substring(1)+ri.substring(1);
//System.out.println("out is "+out);
out="0"+out;
    outtext=outtext+
    out.charAt(40)+out.charAt(8)+out.charAt(48)+out.charAt(16)+out.charAt(56)+out.charAt(24)+out.charAt(64)+out.charAt(32)+
    out.charAt(39)+out.charAt(7)+out.charAt(47)+out.charAt(15)+out.charAt(55)+out.charAt(23)+out.charAt(63)+out.charAt(31)+
    out.charAt(38)+out.charAt(6)+out.charAt(46)+out.charAt(14)+out.charAt(54)+out.charAt(22)+out.charAt(62)+out.charAt(30)+
    out.charAt(37)+out.charAt(5)+out.charAt(45)+out.charAt(13)+out.charAt(53)+out.charAt(21)+out.charAt(61)+out.charAt(29)+
    out.charAt(36)+out.charAt(4)+out.charAt(44)+out.charAt(12)+out.charAt(52)+out.charAt(20)+out.charAt(60)+out.charAt(28)+
    out.charAt(35)+out.charAt(3)+out.charAt(43)+out.charAt(11)+out.charAt(51)+out.charAt(19)+out.charAt(59)+out.charAt(27)+
    out.charAt(34)+out.charAt(2)+out.charAt(42)+out.charAt(10)+out.charAt(50)+out.charAt(18)+out.charAt(58)+out.charAt(26)+
    out.charAt(33)+out.charAt(1)+out.charAt(41)+out.charAt(9)+out.charAt(49)+out.charAt(17)+out.charAt(57)+out.charAt(25);
System.out.println("outtext is "+outtext);
for(int n=1;n<=8;n++)
{
String outword="";
outword=outtext.substring(0,8);
outtext=outtext.substring(8);
//System.out.println(outword);
//System.out.println(outtext);
int word=0;
//word=word+((int)outword.charAt(0))*128+((int)outword.charAt(1))*64+((int)outword.charAt(2))*32+((int)outword.charAt(3))*16+((int)outword.charAt(4))*8+((int)outword.charAt(5))*4+((int)outword.charAt(6))*2+((int)outword.charAt(7))*1;
  if(outword.charAt(0)=='1') word=word+128;
  if(outword.charAt(1)=='1') word=word+64;
  if(outword.charAt(2)=='1') word=word+32;
  if(outword.charAt(3)=='1') word=word+16;
  if(outword.charAt(4)=='1') word=word+8;
  if(outword.charAt(5)=='1') word=word+4;
  if(outword.charAt(6)=='1') word=word+2;
  if(outword.charAt(7)=='1') word=word+1;


System.out.println(word);
char ch;
ch=((char)word);
this.jTextArea2.setText(this.jTextArea2.getText()+ch);
}
//////////////////////////
/////////////////////////
    }///8


}
  }


class MainFrame_jTextField1_keyAdapter extends java.awt.event.KeyAdapter {
  MainFrame adaptee;

  MainFrame_jTextField1_keyAdapter(MainFrame adaptee) {
    this.adaptee = adaptee;
  }
  public void keyPressed(KeyEvent e) {
    adaptee.jTextField1_keyPressed(e);
  }
}

class MainFrame_jButton1_actionAdapter implements java.awt.event.ActionListener {
  MainFrame adaptee;

  MainFrame_jButton1_actionAdapter(MainFrame adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton1_actionPerformed(e);
  }
}

class MainFrame_jButton2_actionAdapter implements java.awt.event.ActionListener {
  MainFrame adaptee;

  MainFrame_jButton2_actionAdapter(MainFrame adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton2_actionPerformed(e);
  }
}

class MainFrame_jButton3_actionAdapter implements java.awt.event.ActionListener {
  MainFrame adaptee;

  MainFrame_jButton3_actionAdapter(MainFrame adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton3_actionPerformed(e);
  }
}

class MainFrame_jButton4_actionAdapter implements java.awt.event.ActionListener {
  MainFrame adaptee;

  MainFrame_jButton4_actionAdapter(MainFrame adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton4_actionPerformed(e);
  }
}