A CCA-secure key-policy attribute-based proxy re-encryption in the adaptive corruption model for dropbox data sharing system
RIS ID
125961
Abstract
The notion of attribute-based proxy re-encryption extends the traditional proxy re-encryption to the attribute-based setting. In an attribute-based proxy re-encryption scheme, the proxy can convert a ciphertext under one access policy to another ciphertext under a new access policy without revealing the underlying plaintext. Attribute-based proxy re-encryption has been widely used in many applications, such as personal health record and cloud data sharing systems. In this work, we propose the notion of key-policy attribute-based proxy re-encryption, which supports any monotonic access structures on users' keys. Furthermore, our scheme is proved against chosen-ciphertext attack secure in the adaptive model.
Publication Details
Ge, C., Susilo, W., Fang, L., Wang, J. & Shi, Y. (2018). A CCA-secure key-policy attribute-based proxy re-encryption in the adaptive corruption model for dropbox data sharing system. Designs, Codes, and Cryptography, 86 (2587), 2603-17.