liboqs 0.9.1

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release notes

liboqs version 0.9.1
====================
About
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: https://openquantumsafe.org/ and on Github at https://github.com/open-quantum-safe/.
liboqs is an open source C library for quantum-resistant cryptographic algorithms.  Details about liboqs can be found in README.md.  See in particular limitations on intended use.
liboqs can be used with the following Open Quantum Safe application integrations:

oqs-provider: A standalone prototype OpenSSL 3 provider enabling liboqs-based quantum-safe and hybrid key authentication and exchange for TLS 1.3, X.509 certificate generation and CMS operations.
OQS-BoringSSL: A prototype integration of liboqs-based authentication and key exchange into TLS 1.3 in our fork of BoringSSL; see https://github.com/open-quantum-safe/boringssl.
OQS-OpenSSH: A prototype integration of liboqs-based authentication and key exchange into Secure Shell (SSH) version 2 in our fork of OpenSSH; see https://github.com/open-quantum-safe/openssh.

Several demos are available for using the above libraries in applications, including Apache, Chromium, curl, haproxy, nginx, and Wireshark.  Performance of liboqs in several settings is measured at https://openquantumsafe.org/benchmarking/.
liboqs can also be used in the following programming languages via language-specific wrappers:

C++, via https://github.com/open-quantum-safe/liboqs-cpp
Go, via https://github.com/open-quantum-safe/liboqs-go
Java, via https://github.com/open-quantum-safe/liboqs-java
.NET, via https://github.com/open-quantum-safe/liboqs-dotnet
Python 3, via https://github.com/open-quantum-safe/liboqs-python
Rust, via https://github.com/open-quantum-safe/liboqs-rust

Release notes
This is version 0.9.1 of liboqs. It was released on December 22, 2023.
This release is a security release which fixes potential non-constant-time behaviour in Kyber based on pq-crystals/kyber@dda29cc
What's New
This release continues from the 0.9.0 release of liboqs.
Key encapsulation mechanisms

Kyber: C, AVX2, and aarch64 implementation updated

Detailed changelog

pull kyber from upstream: dda29cc63af721981ee2c831cf00822e69be3220 (#1631) by @dstebila in pull kyber from upstream: dda29cc63af721981ee2c831cf00822e69be3220 (#1631) open-quantum-safe/liboqs#1633
Apply patch to Kyber aarch64 code from PQClean for variable-time division issue -> targeting 0.9.1 by @bhess in Apply patch to Kyber aarch64 code from PQClean for variable-time division issue -> targeting 0.9.1 open-quantum-safe/liboqs#1637

Full Changelog: open-quantum-safe/liboqs@0.9.0...0.9.1

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