RFC 9941: Secure Shell (SSH) Key Exchange Method Using Hybrid Streamlined NTRU Prime sntrup761 and X25519 with SHA-512: sntrup761x25519-sha512
In plain English — editorial summary, not part of the RFC
This document describes a widely deployed hybrid key exchange method in the Secure Shell (SSH) protocol that is based on Streamlined NTRU Prime sntrup761 and X25519 with SHA-512.
Document record
- Document ID
- RFC9941
- Published
- April 2026
- Authors
- M. Friedl; J. Mojzis; S. Josefsson
- Status
- INFORMATIONAL
- Stream
- IETF
- Area
- sec
- Pages
- 11
- Also known as
- —
Topics
Related documents
Ranked automatically by shared keywords, IETF area and stream — not by editorial selection.
- RFC 9987Secure Shell (SSH) Agent ProtocolCurrent
May 2026
- RFC 10024Post-Quantum Traditional (PQ/T) Hybrid Key Agreement Mechanisms for TLS 1.3Current
August 2026
- RFC 9370Multiple Key Exchanges in the Internet Key Exchange Protocol Version 2 (IKEv2)Current
May 2023
- RFC 9140Nimble Out-of-Band Authentication for EAP (EAP-NOOB)Updated
December 2021
- RFC 8732Generic Security Service Application Program Interface (GSS-API) Key Exchange with SHA-2Current
February 2020
- RFC 8410Algorithm Identifiers for Ed25519, Ed448, X25519, and X448 for Use in the Internet X.509 Public Key InfrastructureUpdated
August 2018
- RFC 8270Increase the Secure Shell Minimum Recommended Diffie-Hellman Modulus Size to 2048 BitsCurrent
December 2017
- RFC 8037CFRG Elliptic Curve Diffie-Hellman (ECDH) and Signatures in JSON Object Signing and Encryption (JOSE)Updated
January 2017
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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.
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