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Negotiated Discrete Log Diffie-Hellman Ephemeral Parameters for TLS

Document Type Replaced Internet-Draft (individual)
Expired & archived
Author Daniel Kahn Gillmor
Last updated 2014-11-10 (Latest revision 2014-04-28)
Replaced by draft-ietf-tls-negotiated-dl-dhe
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-ietf-tls-negotiated-dl-dhe
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This Internet-Draft is no longer active.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:


Traditional discrete logarithm-based Diffie-Hellman (DH) key exchange during the TLS handshake suffers from a number of security, interoperability, and efficiency shortcomings. These shortcomings arise from lack of clarity about which DH group parameters TLS servers should offer and clients should accept. This document offers a solution to these shortcomings for compatible peers by establishing a registry of DH parameters with known structure and a mechanism for peers to indicate support for these groups.


Daniel Kahn Gillmor

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