Abstract:In 1990, the present authors proposed the first ID-based non-interacrive key sharing scheme (ID-NIKS) based on the discrete logarithm problem (DLP) over a composite number n. With a rapid progress of computer system for the last two decades, ID-NIKS based on DLP over n would have more chance to be applied practically. However, there existed no secure ID-NIKS based on DLP over n against the square-root attack when n is a product of three prime numbers. In this paper, we propose an ID-NIKS based on DLP over a pr… Show more
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