Uniform randomness beacons whose output can be publicly attested to be unbiased are required in several cryptographic protocols. A common approach to building such beacons is having a number parties run a coin tossing protocol with guaranteed output delivery (so that adversaries cannot simply keep honest parties from obtaining randomness, consequently halting protocols that rely on it). However...

VSS (verifiable secret sharing) is an important security protection tool in distributed systems. When VSS is employed in publicly verifiable applications, it needs to achieve public verifiability and be upgraded to PVSS (publicly verifiable secret sharing). Besides the two basic security properties, bindingness and hidingness, PVSS concentrates on public verifiability of validity all the operat...

A Publicly Verifiable Secret Sharing (PVSS) scheme allows anyone to verify the validity of the shares computed and distributed by a dealer. The idea of PVSS was introduced by Stadler in [18] where he presented a PVSS scheme based on Discrete Logarithm. Later, several PVSS schemes were proposed. In [2], Behnad and Eghlidos present an interesting PVSS scheme with explicit membership and disputati...

A publicly verifiable secret sharing (PVSS) scheme is a verifiable secret sharing (VSS) scheme in which anyone, not only the shareholders, can verify that the secret shares are correctly distributed. PVSS plays an essential role in the systems that use VSS. In this paper we present a new construction for PVSS scheme based on Paillier encryption scheme.We formalize the notion of indistinguishabi...

Saying a word out loud makes it more memorable than simply reading it silently. This robust finding has been labeled the production effect and has been attributed to the enhanced distinctiveness of produced relative to unproduced items (MacLeod et al. Journal of Experimental Psychology: Learning, Memory, and Cognition, 36, 671-685, 2010). Produced items have the additional information that they...

Em Preço de noiva (2020), temos como pano fundo a trajetória Aku-nna sendo forçada se mudar da capital Nigéria para região rural. Portanto, o objetivo desta pesquisa é analisar deslocamento personagem coloca em constantes embates culturais, levando-a confrontar patriarcalismo tanto nas esferas tradicionais quanto coloniais. Sob revisão bibliográfica, quadro teórico formado por teóricos como: Ho...