?? sdec.java
字號(hào):
import java.io.*;
import java.security.*;
import javax.crypto.*;
import javax.crypto.spec.*;
public class SDec{
public static void main(String args[]) throws Exception{
/*
byte [ ] keykb ={11,-105,-119,50,4,-105,16,38,-14,-111,21,-95,
70,-15,76,-74,67,-88,59,-71,55,-125,104,42};
byte ctext[ ]={-57,119,0,-45,-9,23,37,-56,-60,-34,-99,105,99,113,-17,76};
*/
FileInputStream f=new FileInputStream("SEnc.dat");
int num=f.available();
byte[ ] ctext=new byte[num];
f.read(ctext);
FileInputStream f2=new FileInputStream("keykb1.dat");
int num2=f2.available();
byte[ ] keykb=new byte[num2];
f2.read(keykb);
SecretKeySpec k=new SecretKeySpec(keykb,"DESede");
Cipher cp=Cipher.getInstance("DESede");
cp.init(Cipher.DECRYPT_MODE, k);
byte []ptext=cp.doFinal(ctext);
String p=new String(ptext,"UTF8");
System.out.println(p);
}
}
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