Improvement of Authenticated Encryption Schemes with Message Linkages for Message Flows

Min-Shiang HWANG  Jung-Wen LO  Shu-Yin HSIAO  Yen-Ping CHU  

IEICE TRANSACTIONS on Information and Systems   Vol.E89-D   No.4   pp.1575-1577
Publication Date: 2006/04/01
Online ISSN: 1745-1361
DOI: 10.1093/ietisy/e89-d.4.1575
Print ISSN: 0916-8532
Type of Manuscript: LETTER
Category: Application Information Security
authentication,  cryptography,  digital signature,  encryption,  

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An authenticated encryption scheme provides a mechanism of signing and encrypting simultaneously, and furthermore, the receiver can verify and decrypt the signature at the same time. Tseng et al. proposed two efficiently authenticated encryption schemes which can check the validity of the sent data before message recovery, but in fact their schemes cannot achieve completely the function. In this article, we point out the flaw and propose an improved scheme of revision.