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Message:

Urgent !! I encounter IllegaBlockSizeException error

Posted by Jeffrey on September 18, 2001 at 3:57 AM

i don't have problem when i compile this program but when i run this program after i compiled it is encountered this error "error: my.com.epedas.iSecurityException: IllegalBlockSizeException in decrypt: javax.crypto.IllegaBlockSizeException: Input length not multiple of 8 bytes"

this is the source code
import my.com.epedas.base.*;
import my.com.epedas.security.*;
import my.com.epedas.system.*;

import java.util.*;
import java.io.*;
import java.sql.*;

public class NETLINK_RUNONCE
{

public static void main(String[] args)
{
String lic = "0005|acme.com|20010901|20200101";
try
{
int opt = Integer.parseInt(args[0]);

iKrypto krypto = new iKrypto("my.com.epedas",10);
switch(opt)
{

case 1:
{
DataOutputStream file = new DataOutputStream(new FileOutputStream("license.properties"));


System.out.println("writing license");
System.out.println("lic: "+lic);
lic = krypto.encrypt(lic);
file.writeBytes(lic);

System.out.println("lic: "+lic);
System.out.println("len: "+lic.length());
file.close();
}
break;

case 2:
{
DataInputStream file = new DataInputStream(new FileInputStream("license.properties"));

System.out.println("reading license");
int c = -1;
// boolean marked = false;
StringBuffer buff = new StringBuffer();


while ((c = file.read()) != -1)
buff.append((byte)c);




/* if (!marked) {
file.mark(8);
marked = true;
} else {
marked = false;
}
lic = buff.toString();
*/

System.out.println("lic: "+lic);
System.out.println("len: "+lic.length());
String read=new String(krypto.decrypt(lic));
System.out.println("read: "+read);
file.close();
}

break;

default:
System.out.println("choose 1/2");
}

}
catch(Exception e)
{
System.out.println("error : "+e);
}

}
}