Title: Privacy-Preserving Techniques to Blockchain: The Ring Signature Approach
Abstract: Ring signature is a kind of anonymous signature. Verifier only knows that the signer is a user within a group, yet does not know the identity of this signer. In this talk, we will cover the basics of ring signature and linkable ring signature, including the concept, applications, technical constructions and variants. We will further relate linkable ring signature to cryptocurrencies and discuss how it can provide privacy to users in Blockchain. We will also discuss some interesting future works in this area.
Dr. Joseph Liu is a senior lecturer in the Faculty of Information Technology, Monash University. He got his PhD from the Chinese University of Hong Kong at 2004. Prior to joining Monash at 2015, he has worked as a research scientist at Institute for Infocomm Research (I2R) in Singapore for more than 7 years. His research areas include cyber security, blockchain, applied cryptography and privacy enhanced technology. His papers receive more than 4200 citations and his H-index is 37. His remarkable research in linkable ring signature forms the theory basis of Monero (XMR), one of the largest cryptocurrencies in the world.