RFC 1851 (rfc1851) - Page 1 of 11


The ESP Triple DES Transform



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Network Working Group                                            P. Karn
Request for Comments: 1851                                      Qualcomm
Category: Experimental                                        P. Metzger
                                                                Piermont
                                                              W. Simpson
                                                              Daydreamer
                                                          September 1995


                      The ESP Triple DES Transform


Status of this Memo

   This document defines an Experimental Protocol for the Internet
   community.  This does not specify an Internet standard of any kind.
   Discussion and suggestions for improvement are requested.
   Distribution of this memo is unlimited.


Abstract

   This document describes the Triple DES-CBC security transform for the
   IP Encapsulating Security Payload (ESP).


Table of Contents

     1.     Introduction ..........................................    2
        1.1       Keys ............................................    2
        1.2       Initialization Vector ...........................    2
        1.3       Data Size .......................................    3
        1.4       Performance .....................................    3

     2.     Payload Format ........................................    4

     3.     Algorithm .............................................    6
        3.1       Encryption ......................................    6
        3.2       Decryption ......................................    7

     SECURITY CONSIDERATIONS ......................................    7
     ACKNOWLEDGEMENTS .............................................    8
     REFERENCES ...................................................    9
     AUTHOR'S ADDRESS .............................................   11







Karn, et al                   Experimental


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