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Security and Privacy Implications of Numeric Identifiers Employed in Network Protocols

Document Type Replaced Internet-Draft (individual)
Expired & archived
Authors Fernando Gont , Ivan Arce
Last updated 2019-09-12 (Latest revision 2019-03-11)
Replaced by draft-irtf-pearg-numeric-ids-history
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Replaced by draft-irtf-pearg-numeric-ids-history
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This Internet-Draft is no longer active.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 performs an analysis of the security and privacy implications of different types of "numeric identifiers" used in IETF protocols, and tries to categorize them based on their interoperability requirements and the associated failure severity when such requirements are not met. It describes a number of algorithms that have been employed in real implementations to meet such requirements and analyzes their security and privacy properties. Additionally, it provides advice on possible algorithms that could be employed to satisfy the interoperability requirements of each identifier type, while minimizing the security and privacy implications, thus providing guidance to protocol designers and protocol implementers. Finally, it provides recommendations for future protocol specifications regarding the specification of the aforementioned numeric identifiers.


Fernando Gont
Ivan Arce

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