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This draft is a work item of the Reliable Multicast Transport Working Group of the IETF.
Title : Simple Authentication Schemes for the ALC and NORM Protocols
Author(s) : V. Roca
Filename : draft-ietf-rmt-simple-auth-for-alc-norm-00.txt
Pages : 27
Date : 2008-10-27
This document introduces two schemes that provide a per-packet
authentication and integrity service in the context of the ALC and
NORM protocols. The first scheme is based on digital signatures.
Because it relies on asymmetric cryptography, this scheme generates a
high processing load at the sender and to a lesser extent at a
receiver, as well as a significant transmission overhead. It is
therefore well suited to low data rate sessions. The second scheme
relies on a group Message Authentication Code (MAC). Because this
scheme relies symmetric cryptography, MAC calculation and
verification are fast operations, which makes it suited to high data
rate sessions. However it only provides a group authentication and
integrity service, which means that it only protects against
attackers that are not group members.
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