AES cipher.init method cann't check key size correctly

The AES cipher can not accept the key size correctly.

1: put the sunaes.jar file in the $JAVA_HOME/lib/ext.
2: add the line "security.provider.6=com.sun.advcrypto.provider.SunAES" in the java.security file in $JAVA_HOME/lib/security directory.
3: complie the test file(seems compiler find the correct jar file)
4: execute it. you will find a exception.

the following program demonstrates this:


import java.io.PrintStream;
import java.security.*;
import java.security.spec.*;

import javax.crypto.*;
import javax.crypto.spec.*;
import java.security.Provider;
import com.sun.advcrypto.provider.SunAES;

public class test {

     public static void main( String argv[] ) {
     try{
         String algorithm = "AES";
     String mode = "ECb";
    String padding = "NoPadding";
     int keyStrength=128;
     AlgorithmParameterSpec aps = null;
 
  Cipher ci = Cipher.getInstance( algorithm, "SunAES" );
 
     KeyGenerator kg = KeyGenerator.getInstance( algorithm, "SunAES" );
     kg.init(keyStrength);
     SecretKey key = kg.generateKey();

     ci.init( Cipher.ENCRYPT_MODE, key, aps);
    
     System.out.println("PASSED");
     }catch(Exception ex){
     System.out.println("FAILED");
     ex.printStackTrace();
    
     }
     }

}

lwang:/home/lw129730( 211 )%java test
FAILED
java.security.InvalidKeyException
        at cryptix.jce.provider.cipher.Rijndael.engineGetKeySize(DashoA6275)
        at javax.crypto.Cipher.init(DashoA6275)
        at test.main(test.java:28)