Certificate-based proxy decryption systems with revocability in the standard model

Lihua Wang,Jun Shao,Zhenfu Cao,Masahiro Mambo,Akihiro Yamamura,Licheng Wang

doi:10.1016/j.ins.2013.06.026

Certificate-based proxy decryption systems with revocability in the standard model

Lihua Wang, Jun Shao + Show 4 more

https://doi.org/10.1016/j.ins.2013.06.026

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Journal: Information sciences	Publication Date: Jun 18, 2013
Citations: 16

Affiliation: National Institute of Information and Communications Technology, Zhejiang Gongshang University, Shanghai Jiao Tong University, Kanazawa University, Akita University, Beijing University of Posts and Telecommunications

#Adaptive Chosen Plaintext Attack #Adaptive Chosen Ciphertext Attacks + Show 8 more

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Abstract

We present the concept of a certificate-based proxy decryption (CBPd) system with revocability, which has the following properties: (1) key-escrow freeness; (2) implicit certification; (3) revocability without public key change; and (4) fine-grained delegation. A concrete CBPd scheme is also proposed. The scheme is semantically secure against adaptive chosen plaintext attack (IND-CBPd-Rev-CPA) under the decisional bilinear Diffie-Hellman assumption in the standard model. We also give an enhanced scheme that is secure against adaptive chosen ciphertext attacks (IND-CBPd-Rev-CCA) in the standard model.

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