针对无线人体局域网的安全隐私保护问题,提出一种基于属性的安全与高效的密文加密方案.该方案采用对称加密算法AES和基于属性的加密算法CP-ABE分别对数据和共享密钥进行加密,并以密文的形式存储在PDA中,保证了存储数据的安全.通过对传统的基于属性的加密算法进行改进,减少密文变量参数的数量,节约了生理传感器的传输能耗.对所提的方案与现有的方案在性能方面进行了比较和实验分析,基于NS2的实验结果表明所提出的加密方案在保证存储数据安全的同时具有低的通信和计算开销,证明了其有效性.
According to the problem of security privacy protection of wireless body area networks,puts forward an attribute-based secure and efficient ciphertext encryption scheme.The proposed scheme uses the symmetric encryption algorithm AES and the attribute based encryption algorithm CP-ABE to encrypt the data and the shared key respectively,and stored in the form of ciphertext in PDA,ensure the security of stored data.Through to improve the traditional attribute-based encryption algorithm,reducing the number of ciphertext variable parameters,save the energy consumption of physiological sensors.Through to the proposed scheme with the existing schemes in terms of performance are compared and experimental analysis,the experimental results based on NS2 shows that the proposed scheme to ensure the security of the stored data at the same time has a low communication and computation overhead,prove its validity.