摘要
针对云计算服务的高安全性要求,提出一种云计算环境下的匿名身份认证协议,给出了适用于身份认证的场景模型.协议中使用双线性对构造用户动态身份,引入随机数代替时间戳,解决了传统基于时间戳机制方案的时钟同步问题.协议基于离散对数计算困难性和哈希函数的不可逆性实现双向认证,具有安全性强、效率高等特点,可应用于对用户隐私保护要求较高的分布式云计算环境.
Aiming at the high requirements for security of cloud computing services , it proposes an anon-ymous authentication protocol in cloud computing , and designs a model that suits identity authentication . The temporary identity of the user was constructed by using bilinear pairings .Besides, the nonce was used to replace time stamps to avoid the problem of clock synchronization .The protocol implements mutu-al authentication , based on the calculation difficulty of the Discrete Logarithm Problem and the irreversi-bility of hash function .The protocol is efficient and has the characteristic of high security .It can be ap-plied in distributed cloud environments , which need to protect the users＇privacy .
出处
《广东工业大学学报》
CAS
2014年第3期67-71,87,共6页
Journal of Guangdong University of Technology
基金
广东省自然科学基金重点资助项目(S2012020011071)
广东省教育部产学研合作项目(2012B091000037
2012B091000041)
广州市科技计划项目(2013J4300058)
关键词
云计算
身份认证
随机数
双线性对
匿名性
cloud computing
identity authentication
nonce
bilinear pairing
anonymity
