TLS Client Puzzles Extension
draft-venhoek-tls-client-puzzles-00
| Document | Type |
Expired Internet-Draft
(individual)
Expired & archived
|
|
|---|---|---|---|
| Authors | David Venhoek , - , Marc Schoolderman , Erik Nygren , Samuel Erb , Alex Biryukov , Dmitry Khovratovich , Ari Juels | ||
| Last updated | 2025-05-07 (Latest revision 2024-11-03) | ||
| Replaces | draft-nygren-tls-client-puzzles | ||
| RFC stream | (None) | ||
| Intended RFC status | (None) | ||
| Formats | |||
| Stream | Stream state | (No stream defined) | |
| Consensus boilerplate | Unknown | ||
| RFC Editor Note | (None) | ||
| IESG | IESG state | Expired | |
| 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This Internet-Draft is no longer active.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:
Abstract
Client puzzles allow a TLS server to defend itself against asymmetric DDoS attacks. In particular, it allows a server to request clients perform a selected amount of computation prior to the server performing expensive cryptographic operations. This allows servers to employ a layered defense that represents an improvement over pure rate-limiting strategies. Client puzzles are implemented as an extension to TLS 1.3 [RFC8446] wherein a server can issue a HelloRetryRequest containing the puzzle as an extension. The client must then resend its ClientHello with the puzzle results in the extension.
Authors
David Venhoek
-
Marc Schoolderman
Erik Nygren
Samuel Erb
Alex Biryukov
Dmitry Khovratovich
Ari Juels
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)