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OQS-OpenSSL_1_1_1-stable snapshot 2019-10

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OQS-OpenSSL_1_1_1-stable snapshot 2019-10


The Open Quantum Safe (OQS) project has the goal of developing and prototyping quantum-resistant cryptography. More information on OQS can be found on our website: and on Github at

liboqs is an open source C library for quantum-resistant cryptographic algorithms.

open-quantum-safe/openssl is an integration of liboqs into (a fork of) OpenSSL. The goal of this integration is to provide easy prototyping of quantum-resistant cryptography. The integration should not be considered "production quality".

This branch of our fork of OpenSSL aims to provide integration of post-quantum algorithms from liboqs into TLS 1.3 in OpenSSL 1.1.1.

This branch of our fork of OpenSSL can be used with the following versions of liboqs:

  • liboqs master branch 0.2.0

Release notes

This snapshot of the OQS fork of OpenSSL 1.1.1d (OQS-OpenSSL_1_1_1-stable) was released on October 8, 2019. Its release page on Github is

What's New

This is the second snapshot release of OQS-OpenSSL_1_1_1-stable. It is based on the upstream OpenSSL 1.1.1d release.

This release adds hybrid (post-quantum + elliptic curve) authentication in TLS 1.3.

This release adds/updates post-quantum KEMs for TLS 1.3 key exchange and signature algorithms for TLS 1.3 authentication based on NIST Round 2 submissions. See the file for the list of algorithms.

Previous releases of liboqs differentiated between "master branch" and "nist-branch", with nist-branch supporting more algorithms. liboqs nist-branch is no longer be developed or released, and this release of OQS-OpenSSL_1_1_1-stable only builds against liboqs master branch.

Future work

Snapshot releases of OQS-OpenSSL_1_1_1-stable will be made approximately bi-monthly. These will include syncing the branch with upstream releases of OpenSSL, and changes required to sync with new releases of liboqs.