#pqcrypto

Securing Encryption Data Against the Threat of Future Quantum Computers

In a paper recently published in the journal ‘Nature’, researchers outline several approaches to developing new, quantum-attack resistant encryption techniques. One obvious approach is the development of new encryption techniques that avoid the use of current techniques as these could be undermined in the future.

The problem facing current encryption

At the moment our online securitylargely…

I've been working on some new (hash-based) post-quantum signature schemes:

Unbalanced Winternitz Signatures (pdf)

Abstract: We introduce 'uwots' (unbalanced Winternitz one-time signatures): an optimized, tweakable generalization of the Winternitz signature scheme.

Integer Composition Signatures (pdf)

Abstract: We introduce integer composition signatures (ic): a hash-based family of one-time signatures. The family shows improvements over previous schemes like Winternitz: less costly/shorter signatures, verification in constant time, and tweakable parameters allowing optimization for either signing/verifying.

Code

Jotasapiens OTS: ic, icvar, uwots v4 - sha256 754a600b4cef06d5c773440eb9ed1bc0e3ce208827399703ededd833a141a0fc

Edit: We are migrating servers and the code is not available at this time. The download link will be back soon. In the meanwhile, feel free to contact me, and i'll gladly send you a copy of the code.

Edit: the code is back online. It can be download from: