text: /*
   * null-auth.h
   *
   * David A. McGrew
   * Cisco Systems, Inc.
   *
   */
  
  /*
   *	
   * Copyright (c) 2001-2006, Cisco Systems, Inc.
   * All rights reserved.
   * 
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 
   *   Redistributions of source code must retain the above copyright
   *   notice, this list of conditions and the following disclaimer.
   * 
   *   Redistributions in binary form must reproduce the above
   *   copyright notice, this list of conditions and the following
   *   disclaimer in the documentation and/or other materials provided
   *   with the distribution.
   * 
   *   Neither the name of the Cisco Systems, Inc. nor the names of its
   *   contributors may be used to endorse or promote products derived
   *   from this software without specific prior written permission.
   * 
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
   * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
   * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
   * OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   */
  
  #ifndef NULL_AUTH_H
  #define NULL_AUTH_H
  
  #include "auth.h"
  
  typedef struct {
  	char foo;
  } null_auth_ctx_t;
  
  err_status_t
  null_auth_alloc(auth_t **a, int key_len, int out_len);
  
  err_status_t
  null_auth_dealloc(auth_t *a);
  
  err_status_t
  null_auth_init(null_auth_ctx_t *state, const uint8_t *key, int key_len);
  
  err_status_t
  null_auth_compute (null_auth_ctx_t *state, uint8_t *message,
  		   int msg_octets, int tag_len, uint8_t *result);
  
  
  #endif /* NULL_AUTH_H */
  