区域医学影像信息的云共享访问控制模型

Cloud Shared Access Control Model of Regional Medical Image Information

传统云共享访问控制模型在选取同等信任等级时,由于获取的信任区间内的值偏小而造成访问时间过少、访问范围较小的问题,对此提出一种区域医学影像信息的云共享访问控制模型。首先设计控制矩阵,形成不同用户域的控制权限,由此建立一个安全访问集合,得到云共享访问控制约束关系,然后处理约束元组,得到区域医学影像信息加密方式,使用访问控制协议函数,得到云共享访问加密方案。最后利用用户动态约束掩码,设计一个访问请求过滤器,建立区域医学影像信息的云共享访问控制模型,实现对区域医学影像信息的云共享访问的控制。实验结果表明:与传统访问控制模型相比,区域医学影像信息的云共享访问控制模型获取到的访问时限更长,访问范围更大,更适合控制云共享访问的控制。

When traditional cloud sharing access control model selects the same level of trust,the value in the obtained trust interval is small,so a cloud sharing access control model of regional medical image information is proposed.Firstly,a control matrix is used to form the control authority of different user domains,and a security access set is established to get the constraint relationship of cloud share access control.Then,the constraint ancestor is processed to get the encryption method of regional medical image information.Using the access control protocol function,the cloud share access encryption scheme is obtained.At last,we design an access request filter using user dynamic constraint mask,build a cloud sharing access control model of regional medical image information,and realize the cloud sharing access control of regional medical image information.The experimental results show that compared with the traditional access control model,the access time obtained by the cloud sharing access control model of regional medical image information is longer and the access scope is bigger,which is more suitable for controlling the access of cloud sharing.