RFC 2243 (rfc2243) - Page 1 of 10

OTP Extended Responses

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Network Working Group                                           C. Metz
Request for Comments: 2243                                The Inner Net
Category: Standards Track                                 November 1997




                         OTP Extended Responses


Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (1997).  All Rights Reserved.

Abstract

   This document provides a specification for a type of response to an
   OTP [RFC 1938] challenge that carries explicit indication of the
   response's encoding. Codings for the two mandatory OTP data formats
   using this new type of response are presented.

   This document also provides a specification for a response that
   allows an OTP generator to request that a server re-initialize a
   sequence and change parameters such as the secret pass phrase.

1. Conventions, Terms, and Notation

   This document specifies the data formats and software behaviors
   needed to use OTP extended responses. The data formats are described
   three ways: using an ad-hoc UNIX manual page style syntax, using
   augmented BNF described in sections two and three of RFC 822, and by
   examples. Should there be any conflict between these descriptions,
   the augmented BNF takes precedence. The software behaviors are
   described in words, and specific behavior compliance requirements are
   itemized using the requirements terminology (specifically, the words
   MUST, SHOULD, and MAY) defined in RFC 2119.







Metz                        Standards Track
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