Cryptanalysis of publicly verifiable authenticated encryption

Authors:
Zuhua Shao
Affiliations:
Zhejiang University of Science and Technology, Hangzhou, Zhejiang, P. R. of China
Venue:
InfoSecu '04 Proceedings of the 3rd international conference on Information security
Year:
2004

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Abstract

Ma and Chen proposed a new authenticated encryption scheme with public verifiability. This scheme requires less computational costs and communication overheads than the conventional signature-then-encryption approaches. In this paper, we show that the Ma-Chen scheme does not satisfy three security properties: unforgeability, confidentiality and non-repudiation.