ASDS: Attribute‐based secure data sharing scheme for reliable cloud environment

Abstract

Cloud computing is a new revolution of information technology which provides many benefits to customers such as scalability, on‐demand, 24 × 7 × 365 support, and reduce cost usage of computing resources. But storing data on these untrusted cloud servers makes secure data sharing a big challenge issue. On one hand, enforce data access policies on these untrusted storage servers provider is an effective way to ensure data security. On the other hand, confidentiality of sensitive data should be protected against them. This paper presents an attribute‐based secure data sharing (ASDS) scheme for cloud environment, which provides data access control, data confidentiality, data authentication, and flexible user revocation. In addition, the proposed scheme is able to resist collusion attack and replay attack. The analysis of security properties and the comparison performance with other data sharing schemes have demonstrated that ASDS is very suitable for cloud environment.