A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Requirements for Assured End-to-End Signaling
Security within the Session Initiation
Protocol
Author(s) : J. Polk
Filename : draft-polk-sipping-e2e-sec-assurance-00.txt
Pages : 10
Date : 2005-7-13
The Session Initiation Protocol (SIP) has existing mechanisms for
securing its signaling messages. SIP has several transport
layers it works across: TCP, UDP, SCTP, and TLS over TCP. There
currently is no mechanism to ensure that if TLS over TCP is chosen
by the originating UAC, the messaging will remain encrypted on a
hop-by-hop basis to the destination UAS. This document discusses
this scenario, providing the requirements for such to exist, and
offering pieces of a possible solution for this set of requirements.
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