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Cryptanalysis of a certificateless signcryption scheme in the standard model

✍ Scribed by Jian Weng; Guoxiang Yao; Robert H. Deng; Min-Rong Chen; Xiangxue Li

Book ID
108152967
Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
199 KB
Volume
181
Category
Article
ISSN
0020-0255

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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