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Elliptic Curves for Security

Document Type Replaced Internet-Draft (cfrg RG)
Expired & archived
Author Adam Langley
Last updated 2015-10-14 (Latest revision 2015-01-06)
Replaced by RFC 7748
RFC stream Internet Research Task Force (IRTF)
Intended RFC status (None)
Additional resources Mailing list discussion
Stream IRTF state (None)
Consensus boilerplate Unknown
Document shepherd (None)
IESG IESG state Replaced by draft-irtf-cfrg-curves
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This Internet-Draft is no longer active.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 memo describes an algorithm for deterministically generating parameters for elliptic curves over prime fields offering high practical security in cryptographic applications, including Transport Layer Security (TLS) and X.509 certificates. It also specifies a specific curve at the ~128-bit security level.


Adam Langley

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