A CCA-secure key-policy attribute-based proxy re-encryption in the adaptive corruption model for dropbox data sharing system

Document Type

Article

Publication Date

11-1-2018

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.

Identifier

85045039501 (Scopus)

Publication Title

Designs Codes and Cryptography

External Full Text Location

https://doi.org/10.1007/s10623-018-0462-9

e-ISSN

15737586

ISSN

09251022

First Page

2587

Last Page

2603

Issue

11

Volume

86

Grant

No.CJ20179027

Fund Ref

National Natural Science Foundation of China

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