The key exchange protocol that establishes initial shared secrets in the handshake of the
Signal end-to-end encrypted messaging protocol has several important characteristics:(1) it …

We construct two efficient post-quantum ring signatures with anonymity against full key
exposure from isogenies, addressing the limitations of existing isogeny-based ring …

Falcon is a winner of NIST's six-year post-quantum cryptography standardisation
competition. Based on the celebrated full-domain-hash framework of Gentry, Peikert and …

We propose efficient, post-quantum threshold ring signatures constructed from one-wayness
of AES encryption and the VOLE-in-the-Head zero-knowledge proof system. Our scheme …

The Signal protocol relies on a special handshake protocol, formerly X3DH and now
PQXDH, to set up secure conversations. Prior analyses of these protocols (or proposals for …

As cryptographic protocols transition to post-quantum security, most adopt hybrid solutions
combining pre-quantum and post-quantum assumptions. However, this shift often introduces …

In this note, we share an ongoing work (to be made public soon) presenting some
improvements for the PERK digital signature scheme. Similarly to the recent improvement of …