Last Time: Simulation Sound NIZKS & Connection to CCA Security. Last time we introduced Simulation-Sound NIZKs, and constructed a 1-Time Simulation Sound NIZK (1-SS NIZK). We then showed how to get CCA secure encryption from CPA encryption and NIZKs in one of two ways: using standard NIZK and n copies of a CPA encryption scheme ([DDN00]) or using 1-SS NIZK and 2 copies of a CPA encryption schem...

We propose in this paper a new voting scheme where the voter, while receiving a receipt for his/her vote allowing further contestations, cannot use it to reveal the vote to other unspecified entities, and therefore cannot be forced to do so. The scheme is based on the concept of strong designated verifier signature scheme, and is very cheap in both computation and data communication, regarding ...

An identity-based (ID-based) universal designated verifier signature (ID-UDVS) scheme allows a signature holder to designate a specific verifier of the signature by using a simplified public identity such as e-mail address. In the paper, we present an efficient identity-based universal designated multi-verifiers signature (ID-UDMVS) scheme by extending a single verifier to a set of multi-verifi...

Data from a National Cancer Institute-designated comprehensive cancer center taking part in the ONS Foundation-supported Breast Cancer Care Quality Measures Set pilot study revealed a lack of interventions recommended for patient-reported symptoms of fatigue. A team was formed to address the issue using the steps of the evidence-based practice process and to implement practice changes. This art...

Identity based cryptosystem simplifies the key management and revocation problem. Here we propose an Identity Based Strong Designated Verifier Signature (IBSDVS) scheme using bilinear pairings. The Designated Verifier Signature scheme described in [10] is identity based but it suffers from the deligatability as pointed out in [4]. We analyse the security of the scheme and show that the problem ...

The Ty transposable elements of Saccharomyces cerevisiae form a heterogeneous family within which two broad structural classes (I and II) exist. The two classes differ by two large substitutions and many restriction sites. We show that, like class I elements a class II element, Tyl-17, also appears to contain at least two major protein coding regions, designated TYA and TYB, and the organisatio...