SSH

Table of contents

1. OQS-OpenSSH
2. OQS-libssh

We’ve integrated liboqs into forks of OpenSSH and libssh to provide prototype post-quantum and hybrid key exchange in the SSH protocol. Researchers looking to try additional post-quantum algorithms can easily add more algorithms that follow the OQS API.

A pre-Internet-Draft is available describing how the SSH protocol was adapted to include the hybrid PQ key exchange algorithms.

The goal of these integrations is to provide easy prototyping of quantum-resistant cryptography and should not be considered “production quality”. Please see more about limitations of our prototype software.

OQS-OpenSSH

OQS-OpenSSH
on Github

Our OpenSSH fork implements post-quantum and hybrid key exchange in the SSH protocol. See the README for the list of supported algorithms and usage instructions.

Demo integration

OQS-Demos
on Github

The easiest way to get started with experimenting with post-quantum cryptography is to use our pre-built Docker image containing post-quantum-enabled openssh:

• Getting and running the pre-built post-quantum enabled openssh demo Docker image
• Building your own openssh demo Docker image

There also exist post-quantum-enabled docker images for TLS applications.

Releases

• snapshot 2024-08 aligned with liboqs 0.10.1 (August 30, 2024) current version
• snapshot 2023-10 aligned with liboqs 0.9.0 (October 21, 2023)
• snapshot 2023-06 aligned with liboqs 0.8.0 (June 26, 2023)
• snapshot 2022-08 aligned with liboqs 0.7.2 (August 23, 2022)
• snapshot 2022-01 aligned with liboqs 0.7.1 (January 6, 2022)
• snapshot 2021-08 aligned with liboqs 0.7.0 (August 11, 2021)
• snapshot 2020-08 aligned with liboqs 0.4.0 (September 3, 2020)
• snapshot 2020-07 aligned with liboqs 0.3.0 (July 10, 2020)
• snapshot 2019-10 aligned with liboqs 0.2.0 (October 8, 2019)
• snapshot 2018-11 aligned with liboqs 0.1.0 (November 13, 2018)
• all releases

OQS-libssh

Note: Our libssh integration is currently inactive and not receiving updates. Contributors are welcome.

OQS-libssh
on Github

Our libssh fork implements post-quantum and hybrid key exchange in the SSH protocol. See the README for the list of supported algorithms and usage instructions.

Releases

• snapshot 2022-01 aligned with liboqs 0.7.1 (January 25, 2022) current version