Re: [Aglets-developer] How i can make encryption with Aglet?

[Luca F. <cat...@ti...>]

On Wednesday 20 April 2005 13:32 Ghada Moustafa's cat walking on the keyboard  
wrote:

> Hi all,
>
> I made the implementation of DES Algorithm"Digital Encryption Standard",and
> it works very will,but when i tried to insert it in onCreation method of my
> aglet it enters the second cath when i try to create the cipher and it
> couldn`t recognize the DES algorithm although it generates the key of DES
> correctly
>
>  try {
>      KeyGenerator keygen = KeyGenerator.getInstance("DES");
>
>       SecretKey desKey = keygen.generateKey();
>
>     }
>     catch (NoSuchAlgorithmException ex) {
>    my_frame.jTextArea1.setText("Key generation Failed");
>     }
>      my_frame.jTextArea1.setText("Key generation Right");
>
> //////////// From here Error begin////////////////////////
> Cipher desCipher;
>
>           try {
>             desCipher = Cipher.getInstance("DES");
>           }
>           catch (NoSuchPaddingException ex1) {
>              my_frame.jTextArea1.setText("Create cipher failed 1");
>           }
>           catch (NoSuchAlgorithmException ex1) {
>              my_frame.jTextArea1.setText("Create cipher failed 2");
>           }
>
> I think it may be a problem in the security prefrences of Tahiti but i`m
> not sure.
>
> can anyone help me plz

A few trivial questions:
1) are your classes in the classpath? 
2) if you search for the security provider, can you see all what you want?
	Provider p[] = Security.getProviders();
	for(int i=0; i<p.length; i++){
		Enumeration e = p[i].keys();
		while(e.hasMoreElements()){
			System.out.println("key "+e);
		}
	}
		
3) is your provider specified in java.security?


Luca

-- 
Luca Ferrari,
cat...@ti...