protected Key createKey()

in src/java/org/apache/fulcrum/jce/crypto/algo/CryptoStreamPBEImpl.java [125:155]

• 28 lines of code
• 5 McCabe index (conditional complexity)

    protected Key createKey( char[] password, byte[] salt ) 
            throws GeneralSecurityException
    {
        SecretKeyFactory keyFactory;
        String algorithm = this.getAlgorithm();
        
        PBEKeySpec keySpec = new PBEKeySpec(password, (salt == null)? this.getSalt(): salt.clone(), this.getCount(), KEY_SIZE );

        byte[] encodedTmp = null;
        try {
            if( this.getProviderName() == null )
            {
                keyFactory = SecretKeyFactory.getInstance( algorithm );
            }
            else
            {
                keyFactory = SecretKeyFactory.getInstance( algorithm, this.getProviderName() );
            }
            return keyFactory.generateSecret(keySpec);
            
        } catch (NoSuchAlgorithmException e) {
            throw new GeneralSecurityException(e);
        } finally {
            if (encodedTmp != null) {
                Arrays.fill(encodedTmp, (byte)0); 
            }
            if (keySpec != null) {
                keySpec.clearPassword();
            }
        }
    }