Cooperation with genua GmbH
The hash-based signature scheme XMSS, initially designed at TU Darmstadt and recently specified in the IETF Internet-Draft “XMSS: Extended Hash-Based Signatures”, is now part of the widely distributed Bouncy Castle cryptographic software library. Hash-based signatures are the first post-quantum signature scheme undergoing standardisation. The open source implementation closely follows the Internet-Draft, and is available on the website of Bouncy Castle Java cryptography APIs.
The XMSS Internet-Draft, expected to result in an RFC, can be found at
The Bouncy Castle Lightweight Java APIs (MIT licence), now including XMSS, are available at