Correction: RFC 4169 Hypertext Transfer Protocol (HTTP) Digest Authentication Using Authentication and Key Agreement (AKA) Version-2

A new Request for Comments is now available in online RFC libraries.

        RFC 4169

        Title:      Hypertext Transfer Protocol (HTTP) Digest
                    Authentication Using Authentication and Key
                    Agreement (AKA) Version-2
        Author(s):  V. Torvinen, J. Arkko, M. Naslund
        Status:     Informational
        Date:       November 2005
        Mailbox:    vesa.torvinen@turkuamk.fi,
                    jari.arkko@ericsson.com, mats.naslund@ericsson.com
        Pages:      13
        Characters: 26429
        Updates/Obsoletes/SeeAlso:    None

        I-D Tag:    draft-torvinen-http-digest-aka-v2-02.txt

        URL:        ftp://ftp.rfc-editor.org/in-notes/rfc4169.txt

HTTP Digest, as specified in RFC 2617, is known to be vulnerable to
man-in-the-middle attacks if the client fails to authenticate the
server in TLS, or if the same passwords are used for authentication
in some other context without TLS.  This is a general problem that
exists not just with HTTP Digest, but also with other IETF protocols
that use tunneled authentication.  This document specifies version 2
of the HTTP Digest AKA algorithm (RFC 3310).  This algorithm can be
implemented in a way that it is resistant to the man-in-the-middle
attack.

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Joyce K. Reynolds and Sandy Ginoza
USC/Information Sciences Institute

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