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为了解决医院远程信息系统客户端的数据安全问题,提出利用Twofish加密算法对客户端数据进行加密的算法.该算法的引入有效克服了手机内存的有限性对加密技术的影响,对系统的安全性进行优化.在对Twofish算法加密过程研究的基础上,设计出基于Java客户端代码的安全实现,并通过测试. 相似文献
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The major challenge in wireless body area networks (WBAN) is setting up a protected communication between data consumers and a body area network controller while meeting the security and privacy requirements. This paper proposes efficient and secure data communication in WBANs using a Twofish symmetric algorithm and ciphertext‐policy attribute‐based encryption with constant size ciphertext; in addition, the proposed scheme incorporates policy updating to update access policies. To the best of the author's knowledge, policy updating in WBAN has not been studied in earlier works. The proposed scheme is evaluated in terms of message size, energy consumption, and computation cost, and the results are compared with those of existing schemes. The result shows that the proposed method can achieve higher efficiency than conventional methods. 相似文献
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首先研究了Twofish算法的结构,然后针对128位的密钥长度,用Altera公司的FPGA器件实现了该算法的加密、解密和密钥变换。通过与Rijndael实现结果的比较,说明Twofish的硬件实现灵活、占用资源少。 相似文献
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该文从理论上证明了Twofish算法中,密钥越长,密钥相关S-盒的差分概率就越小,提出了一种新的与密钥作用的方式来产生密钥相关S-盒的方法,理论与测试结果表明新的S-盒的异或差分概率和模加差分概率比原算法的差分概率要小. 相似文献
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