new file mode 100644
--- /dev/null
+++ b/packages/net/snmp/lib/current/include/keytools.h
@@ -0,0 +1,141 @@
+//==========================================================================
+//
+//      ./lib/current/include/keytools.h
+//
+//
+//==========================================================================
+//####COPYRIGHTBEGIN####
+//                                                                          
+// -------------------------------------------                              
+// The contents of this file are subject to the Red Hat eCos Public License 
+// Version 1.1 (the "License"); you may not use this file except in         
+// compliance with the License.  You may obtain a copy of the License at    
+// http://www.redhat.com/                                                   
+//                                                                          
+// Software distributed under the License is distributed on an "AS IS"      
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the 
+// License for the specific language governing rights and limitations under 
+// the License.                                                             
+//                                                                          
+// The Original Code is eCos - Embedded Configurable Operating System,      
+// released September 30, 1998.                                             
+//                                                                          
+// The Initial Developer of the Original Code is Red Hat.                   
+// Portions created by Red Hat are                                          
+// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.                             
+// All Rights Reserved.                                                     
+// -------------------------------------------                              
+//                                                                          
+//####COPYRIGHTEND####
+//####UCDSNMPCOPYRIGHTBEGIN####
+//
+// -------------------------------------------
+//
+// Portions of this software may have been derived from the UCD-SNMP
+// project,  <http://ucd-snmp.ucdavis.edu/>  from the University of
+// California at Davis, which was originally based on the Carnegie Mellon
+// University SNMP implementation.  Portions of this software are therefore
+// covered by the appropriate copyright disclaimers included herein.
+//
+// The release used was version 4.1.2 of May 2000.  "ucd-snmp-4.1.2"
+// -------------------------------------------
+//
+//####UCDSNMPCOPYRIGHTEND####
+//==========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):    hmt
+// Contributors: hmt
+// Date:         2000-05-30
+// Purpose:      Port of UCD-SNMP distribution to eCos.
+// Description:  
+//              
+//
+//####DESCRIPTIONEND####
+//
+//==========================================================================
+/********************************************************************
+       Copyright 1989, 1991, 1992 by Carnegie Mellon University
+
+			  Derivative Work -
+Copyright 1996, 1998, 1999, 2000 The Regents of the University of California
+
+			 All Rights Reserved
+
+Permission to use, copy, modify and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appears in all copies and
+that both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of CMU and The Regents of
+the University of California not be used in advertising or publicity
+pertaining to distribution of the software without specific written
+permission.
+
+CMU AND THE REGENTS OF THE UNIVERSITY OF CALIFORNIA DISCLAIM ALL
+WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL CMU OR
+THE REGENTS OF THE UNIVERSITY OF CALIFORNIA BE LIABLE FOR ANY SPECIAL,
+INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
+FROM THE LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
+CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*********************************************************************/
+/*
+ * keytools.h
+ */
+
+#ifndef _KEYTOOLS_H
+#define _KEYTOOLS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#define USM_LENGTH_EXPANDED_PASSPHRASE	(1024 * 1024)	/* 1Meg. */
+
+#define USM_LENGTH_KU_HASHBLOCK		64		/* In bytes. */
+
+#define USM_LENGTH_P_MIN		8		/* In characters. */
+	/* Recommended practice given in <draft-ietf-snmpv3-usm-v2-02.txt>,
+	 * Section 11.2 "Defining Users".  Move into cmdline app argument
+	 * parsing, and out of the internal routine?  XXX
+	 */
+
+/*
+ * Prototypes.h
+ */
+int	generate_Ku (	oid	*hashtype,	u_int  hashtype_len,
+				u_char	*P,		size_t  pplen,
+				u_char	*Ku,		size_t *kulen);
+
+int	generate_kul (	oid	*hashtype,	u_int  hashtype_len,
+				u_char	*engineID,	size_t  engineID_len,
+				u_char	*Ku,		size_t  ku_len,
+				u_char	*Kul,		size_t *kul_len);
+
+int	encode_keychange (	oid	*hashtype,	u_int  hashtype_len,
+				u_char	*oldkey,	size_t  oldkey_len,
+				u_char	*newkey,	size_t  newkey_len,
+				u_char	*kcstring,	size_t *kcstring_len);
+
+int	decode_keychange (	oid	*hashtype,	u_int  hashtype_len,
+				u_char	*oldkey,	size_t  oldkey_len,
+				u_char	*kcstring,	size_t  kcstring_len,
+				u_char	*newkey,	size_t *newkey_len);
+
+
+/*
+ * All functions devolve to the following block if we can't do cryptography
+ */
+#define	_KEYTOOLS_NOT_AVAILABLE			\
+{						\
+	return SNMPERR_KT_NOT_AVAILABLE;	\
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _KEYTOOLS_H */
+