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The ID-based non-interactive key sharing scheme (ID-NIKS) is considered to be one of ID-based encryptions (IBE). In 2005, Murakami and Kasahara proposed a new scheme of Diffie-Hellman type ID-NIKS (DH-ID-NIKS) using a product of three prime numbers as the modulus (MK3). In this paper, we propose the special prime numbers p, q and r in order to implement MK3. In addition, we have measured the necessary...
In this paper we propose a new trapdoor in knapsack public-key cryptosystem, where two independent sequences is used as the public key. We show that the proposed scheme is secure against the low-density attack, because the density can be made as large as one desires. We also discuss the security of the secret key of the proposed scheme.
In this paper we describe the KMN PKC and the special class of it. KMN PKC has the feature that, two sequences are used as the public keys. We discuss on the security of KMN PKC against the low-density attack with computer experiments.
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