3 papers
cs.CR2026
Half-Moon Cookie: Private, Similarity-Based Blocklisting with TOCTOU-Attack Resilience
Xinyuan Zhang, Anrin Chakraborti, Michael K. Reiter
Blocklisting is a common technique for preventing the use of known malicious content. However, conventional blocklisting infrastructures require either the blocklist to be public o…
cs.CR2026
Automatic Teller Machines for Offline E-cash
Anrin Chakraborti, Qingzhao Zhang, Jingjia Peng +2
Electronic cash (e-cash) is a digital alternative to physical currency that allows anonymous transactions between users and merchants. Typically, coins in an e-cash scheme are only…
cs.CR2025
Blocklisted Oblivious Pseudorandom Functions
Xinyuan Zhang, Anrin Chakraborti, Michael Reiter
An oblivious pseudorandom function (OPRF) is a protocol by which a client and server interact to evaluate a pseudorandom function on a key provided by the server and an input provi…