KAS-XMSS: Sovereign Post-Quantum Signature Suite

KAS-XMSS is a deterministic, hash-based post-quantum digital signature framework developed by the Kapodistrian Academy of Science.

Built upon the XMSS standard (RFC 8391), KAS-XMSS offers:

• Entropy-verified, reproducible key generation
• Stateless or schedulable-state operation modes
• Full independence from NIST and foreign cryptographic authorities
• Strong Grover/Shor resistance via SHAKE256 + Merkle tree constructs

Applications

• QD-RSA hybrid deployments
• Academic PKI systems
• Scientific long-term archives
• National digital identity systems

Components

• /reference/ – C and Python reference implementations
• /test_vectors/ – Reproducible test signatures and seeds
• kas_xmss_whitepaper.pdf – Design and threat model

Contact

[email protected]