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RFC 9980
Title: Post-Quantum Cryptography in OpenPGP
Author: S. Kousidis,
J. Roth,
F. Strenzke,
A. Wussler
Status: Proposed Standard
Stream: IETF
Date: June 2026
Mailbox: [email protected],
[email protected],
[email protected],
[email protected]
Pages: 222
I-D Tag: draft-ietf-openpgp-pqc-17
URL: https://www.rfc-editor.org/info/rfc9980
DOI: 10.17487/RFC9980
This document defines a post-quantum public key algorithm extension for the
OpenPGP protocol, extending RFC 9580. Given the generally assumed threat of a
cryptographically relevant quantum computer, this extension provides a basis
for long-term secure OpenPGP signatures and ciphertexts. Specifically, it
defines composite public key encryption based on ML-KEM (formerly
CRYSTALS-Kyber), composite public key signatures based on ML-DSA (formerly
CRYSTALS-Dilithium), both in combination with Elliptic Curve Cryptography
(ECC), and SLH-DSA (formerly SPHINCS+) as a standalone public key signature
scheme.
This document is a product of the Open Specification for Pretty Good Privacy
Working Group of the IETF.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and
suggestions for improvements. Distribution of this memo is unlimited.
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