Timed Efficient Stream Loss-Tolerant Authentication (TESLA): Multicast Source Authentication Transform Introduction
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From: The IESG <email@example.com> To: IETF-Announce <firstname.lastname@example.org> Cc: Internet Architecture Board <email@example.com>, RFC Editor <firstname.lastname@example.org>, msec mailing list <email@example.com>, msec chair <firstname.lastname@example.org> Subject: Document Action: 'TESLA: Multicast Source Authentication Transform Introduction' to Informational RFC The IESG has approved the following document: - 'TESLA: Multicast Source Authentication Transform Introduction ' <draft-ietf-msec-tesla-intro-05.txt> as an Informational RFC This document is the product of the Multicast Security Working Group. The IESG contact persons are Russ Housley and Tim Polk. A URL of this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-msec-tesla-intro-05.txt
Technical Summary This document introduces TESLA, a secure source authentication mechanism for multicast or broadcast data streams. This document provides an algorithmic description of the scheme for informational purposes, and in particular, it is intended to assist in writing specifications for protocols based on TESLA in different contexts. The main deterrents so far for a data authentication mechanism for multicast were the seemingly conflicting requirements: loss tolerance, high efficiency, no per-receiver state at the sender. The problem is particularly hard in settings with high packet loss rates and where lost packets are not retransmitted, and where the receiver wants to authenticate each packet it receives. TESLA provides authentication of individual data packets, regardless of the packet loss rate. In addition, TESLA features low overhead for both sender and receiver, and does not require per-receiver state at the sender. TESLA is secure as long as the sender and receiver are loosely time synchronized. Working Group Summary The MSEC Working Group came to rough consensus on this document. Protocol Quality This document was reviewed by Russ Housley for the IESG.