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Security extension for the Canetti-Krawczyk model in identity-based systems

✍ Scribed by Xinghua Li; Jianfeng Ma; SangJae Moon


Book ID
111785125
Publisher
Science in China Press (SCP)
Year
2005
Tongue
English
Weight
133 KB
Volume
48
Category
Article
ISSN
1674-733X

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An improved semantically-secure identity
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Recently, Yu et al. proposed the first identity-based signcryption scheme without random oracles and proved it was semantically secure in the standard model. However, in this paper we find that their scheme actually does not reach the semantic security as they claimed. To make up for this defect, we