tThe CSAIL2019 time-lock puzzle is an unsolved cryptographic challenge introduced by Ron Rivest in 2019, replacing the solved LCS35 puzzle. Solving these types of puzzles requires large amounts of intrinsically sequential computations, with each iteration ...

In the absence of sufficiently optimised public key constructions, anonymous authentication for Radio-Frequency Identification Devices (RFIDs) requires state synchronisation between tags and a trusted server. Active adversaries disrupt this synchrony, ...

An architecture based on the RSA public key cryptography algorithm is presented. The circuit includes two components, one for modular squaring and one for modular multiplication. Each component is based on the Montgomery algorithm and implements the ...