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Verbal Key Exchange

Document Type Expired Internet-Draft (individual)
Expired & archived
Author Pars Mutaf
Last updated 2007-12-19
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This document describes a verbal key exchange protocol in which a short fingerprint is used to represent a "one-time" public key fingerprint. The one-time public key is immediately used for key exchange, before an attacker has time to find a public/private key pair that gives the same fingerprint and mount a Man-in-the-Middle attack. The protocol, however, requires that both users be present for fingerprint verification, making it suitable for mobile users only.


Pars Mutaf

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)