We present a general framework for constructing two-message oblivious transfer protocols using a modification of Cramer and Shoup’s notion of smooth projective hashing (2002). ...
The Lenstra-Lenstra-Lov´asz lattice basis reduction algorithm (LLL or L3 ) is a very popular tool in public-key cryptanalysis and in many other fields. Given an integer d-dimensi...
Abstract. We introduce a new cryptographic problem called time capsule signature. Time capsule signature is a ‘future signature’ that becomes valid from a specific future time...
Abstract. This work introduces a new tool for a fund manager to verifiably communicate portfolio risk characteristics to an investor. We address the classic dilemma: How can an in...
In this paper we present a new class of stream ciphers based on a very simple mechanism. The heart of our method is a Feedback with Carry Shift Registers (FCSR) automaton. This au...