An Improved Authenticated Encryption Scheme

Fagen LI  Jiang DENG  Tsuyoshi TAKAGI  

IEICE TRANSACTIONS on Information and Systems   Vol.E94-D   No.11   pp.2171-2172
Publication Date: 2011/11/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E94.D.2171
Print ISSN: 0916-8532
Type of Manuscript: Special Section LETTER (Special Section on Information and Communication System Security)
authenticated encryption,  unforgeability,  confidentiality,  non-repudiation,  

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Authenticated encryption schemes are very useful for private and authenticated communication. In 2010, Rasslan and Youssef showed that the Hwang et al.'s authenticated encryption scheme is not secure by presenting a message forgery attack. However, Rasslan and Youssef did not give how to solve the security issue. In this letter, we give an improvement of the Hwang et al.'s scheme. The improved scheme not only solves the security issue of the original scheme, but also maintains its efficiency.