期刊名称：International Journal of Advanced Research in Computer Engineering & Technology (IJARCET)
印刷版ISSN：2278-1323
出版年度：2014
卷号：3
期号：10
页码：3440-3443
出版社：Shri Pannalal Research Institute of Technolgy
摘要：One of the important characteristics of cloud computing is low maintenance which is economically beneficial to the user. All the user in the cloud, provides their resources to the customer (or) a third party by sharing their data in a common area. Group Formation makes it simple, for a group of members share their resources. Group Members in the cloud are identified with a group id or user id. The user has to share or retrieve their data from the cloud using their user id, where user's id is used to authenticate the user. The user id should be secured from third party in a cloud especially in a group by using Revocation list. The Revocation list has to identified an authenticated user. Our work in this paper is to secure the user id, in such a way that a third party will not be able to retrieve any data without the user id. This is applicable even for a dynamic group, by using ring signature algorithm. By using Ring signature any user can securely share the data with others in the group. this reduces the storage overhead and computation cost.
关键词：Ring Signature; Encryption; Group ; signature; Group Member; Security
