Zhouquan Du

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In order to figure out the security problem in block cipher algorithm, the principle and the key steps of the reconstruction design are studied and analyzed, including the common models and research methods. After analysis and comparison, an S-box of the encryption algorithm based scheme is proposed and demonstrated, it combines the idea of reconstruction(More)
With the development of the wireless sensor networks (WSNs), the security is becoming more and more serious. The key schedules in lightweight block ciphers are often highly simplified, which causes loopholes that could be exploited in many attacks. The research on key expansion has become one of the pivotal technologies which aimed at improving performances(More)
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