Security Considerations Regarding Compression Dictionaries

Document Type Expired Internet-Draft (individual)
Author Felix Handte 
Last updated 2020-05-01 (latest revision 2019-10-29)
Replaces draft-kucherawy-httpbis-dict-sec
Stream (None)
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Additional Resources
- GitHub Repository
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Dictionary-based compression enables better performance, but brings state into the process of compression, with all the complexities that follow. This document explores the security implications of this technique in the context of internet protocols and enumerates known risks and mitigations.


Felix Handte (

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