/*
 * @(#)DigestSecurityCtx.java	1.5 00/11/16
 *
 * Copyright 2000 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * This software is the proprietary information of Sun Microsystems, Inc.  
 * Use is subject to license terms.
 * 
 */

package com.sun.security.sasl.digest;

import com.sun.security.sasl.preview.*;

/**
  * Interface used for classes implementing integrity checking and privacy
  * for DIGEST-MD5 SASL mechanism implementation.
  * 
  * @see <a href="http://www.ietf.org/rfc/rfc2831.txt">RFC 2831</a>
  * - Using Digest Authentication as a SASL Mechanism
  *
  * @author Jonathan Bruce
  */

public interface DigestSecurityCtx {

    /**
     * Wrap out-going message and return wrapped message
     *
     * @throws SaslException
     */
    public byte[] wrap(byte[] dest, int start, int len) 
	throws SaslException;

    /**
     * Unwrap incoming message and return original message
     *
     * @throws SaslException
     */
    public byte[] unwrap(byte[] outgoing, int start, int len) 
	throws SaslException;
}