In this work, we initially study the necessary properties and security requirements of Ring
Confidential Transaction (RingCT) protocol deployed in the popular anonymous …

Cryptographic techniques are employed to ensure the security of voting systems in order to
increase its wide adoption. However, in such electronic voting systems, the public bulletin …

In this paper, we construct a Lattice-based one-time Linkable Ring Signature (L2RS)
scheme, which enables the public to verify if two or more signatures were generated by …

We present Raptor, the first practical lattice-based (linkable) ring signature scheme with
implementation. Raptor is as fast as classical solutions; while the size of the signature is …

In this paper, we propose a two-factor data security protection mechanism with factor
revocability for cloud storage system. Our system allows a sender to send an encrypted …

Linkable ring signatures have found many attractive applications. One of the recent
important extensions is a linkable threshold ring signature (LTRS) scheme. Unfortunately …

In this paper, we propose two new certificate-based signature (CBS) schemes with new
features and advantages. The first one is very efficient as it does not require any pairing …

For most elections, receipt-freeness is important–voters are unable to prove to others on
how they voted, in order to prevent vote-buying. Many existing receipt-free electronic voting …

Certificate-based cryptography combines the merits of traditional public key infrastructure
(PKI) and identity-based cryptography. It does not have the key escrow problem in identity …

In order to simplify certificate management in traditional public key cryptography and solve
the key escrow problem in identity-based cryptography, the notion of certificate-based …