Oct 23

Seminar: Veronika Kuchta “Post-Quantum One-Time Linkable Ring Signature and Application to Ring Confidential Transactions” (Oct 24, 2018)

Oct 24, 2018 – 13.00 – room P.2NO8.08

Speaker: Veronika Kuchta (Monash University)

Title: “Post-Quantum One-Time Linkable Ring Signature and Application to Ring Confidential Transactions”
Short abstract: “We present a Lattice-based one-time Linkable Ring Signature (L2RS) scheme, which enables the public to verify if two or more signatures were generated by same signer, whilst still preserving her anonymity. The L2RS provides unconditional anonymity and security guarantees under the Ring Short Integer Solution (Ring-SIS) lattice hard- ness assumption. The proposed L2RS scheme is extended to be applied in a protocol that we called Lattice Ring Confidential transaction (Lattice RingCT) RingCT, which forms the foundation of the privacy-preserving protocol in any post-quantum secure cryptocurrency such as Hcash. We also present and extension of Lattice RingCT supporting Multiple-Input and Multiple-Output wallet transactions.”