期刊名称：International Journal of Advanced Research in Computer Engineering & Technology (IJARCET)
印刷版ISSN：2278-1323
出版年度：2015
卷号：4
期号：3
页码：1034-1040
出版社：Shri Pannalal Research Institute of Technolgy
摘要：Centralized online social networks which we are currently using are suffers from various privacy issues like data mining from huge repository of data and distribution of data to a third party for business primitives.This is usually done by cryptographic means. In case of decentralized system the data is distributed to each user that means data storage takes place at each user's own database. In a DOSN, there are privacy-preserving variants of cryptographic primitives that do not reveal access policies. Therefore it is not suitable for usage in the decentralized architecture because of performance or storage restrictions. In a DOSN both privacy and performance are very important factors. We have used predicate encryption in this decentralized system. Aunivariate polynomial construction for access policies in PE that increases performance of the scheme but leaks some part of the access policy to users with access rights. We uses Bloom filters to decrease decryption time and indicate objects that can be decrypted by a particular user. We evaluate the performance of the decentralized scheme in the concrete scenario of a news feed. Our decentralized architecture is best suited for a corporate professionals and organization and for small set of separate identities.
