Study and Scope of Signcryption for Cloud Data Access Control

Abstract

As cloud storage service provides convenience, high computation and a capable service from local to remote server through the internet; it attracts the user to outsource data from remotecloud server. Storing and outsourcing of sensitive data directly to multi-tenant cloud is unsafe and it also raises the privacy and security issues. Ciphertext Policy-Attribute Based Encryption (CP-ABE) with attribute based signature (ABS) provides confidentiality and anonymous authentication for such environment and called Attribute Based Syncryption(ABSC). This technique can acquire security and privacy together, which might be more suitable for cloud data outsourcing. This paper delivers a widespread survey on attribute-based signcryption schemes to finding out the suitability and requirements for access control of outsourced cloud data and identify the research gap. Moreover, we compare the existing scheme’s functionality and characteristic to analyses efficiency and performance of recent attribute-based signcryption to fulfill outsourcing properties.