Abstract
Many Attribute-Based secret writing (ABE) schemes do not defend receivers’ privacy, such all the attributes to describe the eligible receivers square measure transmitted in plaintexts. Hidden policy-based ABE schemes are planned to safeguard receivers’ privacy by employing a construction that needs each user within the system to rewrite the cipher text victimization all the attributes they possess, which incurs nice computation and communication overhead. To handle this issue, during this paper, we propose a brand new idea – Gradual Identity Exposure (GIE) – to protect information receivers’ identity. Our approach is to disclose the receivers’ info bit by bit by permitting cipher text recipients for decrypting the message victimization their possessed attributes one-by- one (but not all). If the receiver doesn't possess one attribute in this procedure, the remainder of attributes square measure still unknown.