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《Journal of University of Electronic Science and Technology of China》 2009-S1
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Digital Signature with Encryption Based on Combined Symmetric Key

WU Su-yan1,2, LI Ying 1, HU Xiang-yi 1, and DU Li-ping 1 (1. Beijing Municipal Institute of Science & Technology Information Xicheng Beijing 100044; 2. Department of Electronic Engineering, Tsinghua University Haidian Beijing 100080)  
A combined symmetric key scheme is presented to transmit secret data and implement digital signature in intranet. This method stores key seed matrix, symmetric key algorithm and combined symmetric key algorithm in hardware equipment. Compared with traditional symmetric cryptography, the key is one-time pad and the key updateing and maintenance is automatic, so the key is maintenance free. This method has the features of fast deciphering and simple key management.
【Fund】: 北京市科技新星计划资助(2007B040)
【CateGory Index】: TP309.7
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