Using Cryptography in a Mailet within James?

[Intelekia]

Has anybody used cryptography inside James? I am trying to do so (the JCE bundled with J2SE 1.4.2) from a mailet. If I invoke THE SAME class (please see attached sample) from the command line it works fine, but if I run inside James I always get the exception: “Algorithm PBEWithMD5AndDES not available”. I think this must do with the java permissions and policies, but if have tried the following without any success:   -          run phoenix without security manager -          edit the java.policy file contained in phoenix-loader.jar in order to add specific permissions -          edit James’ environment.xml file to add the following permissions:   <server> ��� <policy> ����� <grant code-base="file:${java.home}${/}jre${/}lib${/}ext${/}-"> �������� <permission class="java.security.AllPermission" /> ����� </grant> ����� <grant code-base="file:${java.home}${/}..${/}lib${/}-"> �������� <permission class="java.security.AllPermission" /> ����� </grant> ����� <grant code-base="file:${java.home}${/}lib${/}ext${/}-"> �������� <permission class="java.security.AllPermission" /> ����� </grant> ����� <grant code-base="file:${app.home}${/}-"> �������� <permission class="java.security.AllPermission" /> ����� </grant> ��� </policy> […]   Any help & ideas are welcome, thank you in advance!   Isaac.

import java.security.*;
import javax.crypto.*;
import javax.crypto.spec.*;
import java.util.*;

// This is for BASE64 encoding and decoding

import sun.misc.*;

public class CryptoHelper {
    
    private static int ITERATIONS = 1000;
    
    private static void usage() {
        System.err.println("Usage: java CryptoHelper -e|-d password text");
        System.exit(1);
    }
    
    public static void main(String[] args)
    throws Exception {
        // Security.addProvider(new sun.security.provider.Sun());
        
        if (args.length != 3) usage();
        
        char[] password = args[1].toCharArray();
        String text = args[2];
        String output = null;
        
        // Check the first argument: are we encrypting or decrypting?
        
        if ("-e".equals(args[0])) output = encrypt(password, text);
        else if ("-d".equals(args[0])) output = decrypt(password, text);
        else usage();
        System.out.println(output);
    }
    
    public static String encrypt(char[] password, String plaintext)
    throws Exception {
        // Begin by creating a random salt of 64 bits (8 bytes)
        
        byte[] salt = new byte[8];
        Random random = new Random();
        random.nextBytes(salt);
        
        // Create the PBEKeySpec with the given password
        
        PBEKeySpec keySpec = new PBEKeySpec(password);
        
        // Get a SecretKeyFactory for PBEWithSHAAndTwofish
        
        SecretKeyFactory keyFactory =
        SecretKeyFactory.getInstance("PBEWithMD5AndDES");
        
        // Create our key
        
        SecretKey key = keyFactory.generateSecret(keySpec);
        
        // Now create a parameter spec for our salt and iterations
        
        PBEParameterSpec paramSpec = new PBEParameterSpec(salt, ITERATIONS);
        
        // Create a cipher and initialize it for encrypting
        
        Cipher cipher = Cipher.getInstance("PBEWithMD5AndDES");
        cipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
        
        byte[] ciphertext = cipher.doFinal(plaintext.getBytes());
        
        BASE64Encoder encoder = new BASE64Encoder();
        
        String saltString = encoder.encode(salt);
        String ciphertextString = encoder.encode(ciphertext);
        
        return saltString+ciphertextString;
    }
    
    
    public static String decrypt(char[] password, String text)
    throws Exception {
        // Below we split the text into salt and text strings.
        
        String salt = text.substring(0,12);
        String ciphertext = text.substring(12,text.length());
        
        // BASE64Decode the bytes for the salt and the ciphertext
        
        BASE64Decoder decoder = new BASE64Decoder();
        byte[] saltArray = decoder.decodeBuffer(salt);
        byte[] ciphertextArray = decoder.decodeBuffer(ciphertext);
        
        // Create the PBEKeySpec with the given password
        
        PBEKeySpec keySpec = new PBEKeySpec(password);
        
        // Get a SecretKeyFactory for PBEWithSHAAndTwofish
        
        SecretKeyFactory keyFactory =
        SecretKeyFactory.getInstance("PBEWithMD5AndDES");
        
        // Create our key
        
        SecretKey key = keyFactory.generateSecret(keySpec);
        
        // Now create a parameter spec for our salt and iterations
        PBEParameterSpec paramSpec =
        new PBEParameterSpec(saltArray, ITERATIONS);
        
        // Create a cipher and initialize it for encrypting
        
        Cipher cipher = Cipher.getInstance("PBEWithMD5AndDES");
        cipher.init(Cipher.DECRYPT_MODE, key, paramSpec);
        
        // Perform the actual decryption
        
        byte[] plaintextArray = cipher.doFinal(ciphertextArray);
        
        return new String(plaintextArray);
    }
}


---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]