liboqs is an open source C library for quantum-safe cryptographic algorithms.
liboqs provides:
- A collection of open source implementations of quantum-safe key encapsulation mechanism (KEM) and digital signature algorithms; the full list can be found below
- A common API for these algorithms
- A test harness and benchmarking routines
liboqs is part of the Open Quantum Safe (OQS) project led by Douglas Stebila and Michele Mosca, which aims to develop and integrate into applications quantum-safe cryptography to facilitate deployment and testing in real world contexts. In particular, OQS provides prototype integrations of liboqs into TLS and SSH, through OpenSSL and OpenSSH.
More information on OQS can be found here and in the associated whitepapers.