*/
    public boolean equals( Object obj ) {
        if( obj instanceof NtlmPasswordAuthentication ) {

     * hashes (meaning negotiated via NTLM HTTP Authentication) and the other does not they will not be equal. This is
     * technically not correct however the server 8 byte challenge would be required to compute and compare the password
     * hashes but that it not available with this method.
     */
    @Override
    public boolean equals ( Object obj ) {
        if ( super.equals(obj) ) {

            }

            // Compute Resource Group IDs with Resource Domain ID to get SIDs
            this.resourceGroupSids = new SID[resourceGroups.length];
            for ( int i = 0; i < resourceGroups.length; i++ ) {
                this.resourceGroupSids[ i ] = new SID(resourceDomainId, resourceGroups[ i ].getId());
            }

            // Compute User IDs with Domain ID to get User SIDs

            buffer[i] = 0;
    }

    /**
     * Continues an MD4 message digest using the input byte.
     */
    public void engineUpdate (byte b) {
        // compute number of bytes still unhashed; ie. present in buffer
        int i = (int)(count % BLOCK_LENGTH);
        count++;                                        // update number of bytes
        buffer[i] = b;

                }
            }

            /* Verification fails (w/ W2K3 server at least) if status is not 0. This
             * suggests MS doesn't compute the signature (correctly) for error responses
             * (perhaps for DOS reasons).
             */
            if (digest != null && resp.errorCode == 0) {
                digest.verify( BUF, 4, resp );

    };

    static final String[] WINERR_MESSAGES = {
        "The operation completed successfully.", "Access is denied.",
        "No more connections can be made to this remote computer at this time because there are already as many connections as the computer can accept.",
        "The pipe state is invalid.", "All pipe instances are busy.", "The pipe is being closed.", "No process is on the other end of the pipe.",

     */
    @Override
    public boolean verifySignature ( byte[] buffer, int i, int size ) {
        /*
         * Verification fails (w/ W2K3 server at least) if status is not 0. This
         * suggests MS doesn't compute the signature (correctly) for error responses
         * (perhaps for DOS reasons).
         */
        /*
         * Looks like the failure case also is just reflecting back the signature we sent
         */

    (For example, a function in a library to compute square roots has
    a purpose that is entirely well-defined independent of the
    application.  Therefore, Subsection 2d requires that any
    application-supplied function or table used by this function must
    be optional: if the application does not supply it, the square
    root function must still compute square roots.)

     */
    public boolean isPreferredMech ( ASN1ObjectIdentifier mechanism ) {
        return NtlmContext.NTLMSSP_OID.equals(mechanism);
    }


    /**
     * Computes the 24 byte ANSI password hash given the 8 byte server challenge.
     * 
     * @param tc
     * @param chlng
     * @return the hash for the given challenge
     * @throws GeneralSecurityException
     */

     * Note that this is different from calling <tt>getSecurity</tt> on a
     * share. There are actually two different ACLs for shares - the ACL on
     * the share and the ACL on the folder being shared.
     * Go to <i>Computer Management</i>
     * &gt; <i>System Tools</i> &gt; <i>Shared Folders</i> &gt; <i>Shares</i> and
     * look at the <i>Properties</i> for a share. You will see two tabs - one