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Lecture Notes in Computer Science
We take a closer look at the Open Protocol for Access Control, Identification, and Ticketing with privacY (OPACITY). This Diffie-Hellman-based protocol is supposed to provide a secure and privacy-friendly key establishment for contactless environments. It is promoted by the US Department of Defense and meanwhile available in several standards such as ISO/IEC 24727-6 and ANSI 504-1. To the best of our knowledge, so far no detailed cryptographic analysis has been publicly available. Thus, wedoi:10.1007/978-3-642-40203-6_20 fatcat:rbibehz2evgjncwexcr7mw4wga