期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2015
卷号：3
期号：5
DOI：10.15680/ijircce.2015.0305062
出版社：S&S Publications
摘要：Cipher text-Policy Attribute-based Encryption (CP-ABE) is considered as one of the most suitablescheme for data access control in cloud storage. Despite that the existing Outsourced ABE solutions are able to offloadsome intensive computing tasks to a third party, the verifiability of results returned from the third party has yet to beaddressed. Aiming at tackling the challenge above, a new Secure Outsourced ABE system is proposed, which supportsboth secure outsourced key-issuing and decryption. This new method offloads all access policy and attribute relatedoperations in the key-issuing process or decryption to a Key Generation Service Provider (KGSP) and a DecryptionService Provider (DSP), respectively, leaving only a constant number of simple operations for the attribute authorityand eligible users to perform locally. In addition, for the first time, an outsourced ABE construction is proposed whichprovides checkability of the outsourced computation results in an efficient way.
