In undeniable signature schemes, zero-knowledgeness and non-transferability have been identified so far. In this paper, by separating these two notions, we show the first 3-move confirmation and disavowal protocols for Chaum’s undeniable signature scheme which is secure against active and concurrent attacks. Our main observation is that while the signer has one public key and one secret key, th...

the present paper focused on the sociocultural explanations of rhetorical differences between english and persian and was based on the contrastive genre analysis of applied linguistics research article abstracts in these two languages. the evolutionary nature of research article abstracts was also investigated from 1985 to 2005, in three stages, with a time interval of 10 years. seventy eight r...

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This article describes an implementation of a basic multiprocessor system that exhibits replication and differentiation abilities on the POEtic tissue, a programmable hardware designed for bio-inspired applications [1, 2] . As for a living organism, whose existence starts with only one cell that first divides, our system begins with only one totipotent processor, able to implement any of the ce...