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RFC 9187
Title: Sequence Number Extension for Windowed Protocols
Author: J. Touch
Status: Informational
Stream: Independent
Date: January 2022
Mailbox: [email protected]
Pages: 10
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-touch-sne-02.txt
URL: https://www.rfc-editor.org/info/rfc9187
DOI: 10.17487/RFC9187
Sliding window protocols use finite sequence numbers to determine
segment placement and order. These sequence number spaces wrap around
and are reused during the operation of such protocols. This document
describes a way to extend the size of these sequence numbers at the
endpoints to avoid the impact of that wrap and reuse without
transmitting additional information in the packet header. The
resulting extended sequence numbers can be used at the endpoints in
encryption and authentication algorithms to ensure input bit patterns
do not repeat over the lifetime of a connection.
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