DocumentCode :
2562623
Title :
Server Aided Ciphertext-Policy Attribute-Based Encryption
Author :
Hao Wang ; Bo Yang ; Yilei Wang
Author_Institution :
Sch. of Inf. Sci. & Eng., Shandong Normal Univ., Jinan, China
fYear :
2015
fDate :
24-27 March 2015
Firstpage :
440
Lastpage :
444
Abstract :
Attribute-based encryption (ABE) is a type of public key encryption that allows users to encrypt and decrypt messages based on user attributes. One drawback is that encryption and decryption computational costs scale with the complexity of the access policy or number of attributes. In practice, this makes encryption and decryption a possible bottleneck for some applications. In this work, we aim to mitigate this problem for cipher text-policy ABE (CP-ABE). We introduce the serve raided CP-ABE (SA-CP-ABE) system. In this system, users can precompute an intermediate cipher text before actual encryption to improve efficiency, and stores it on its storage server. Before decryption, user can call its computing server to transform the ciphertext to the partially decrypted ciphertext. This is significant for mobile devices to save local storage resources and computational resources. Then, we propose an SA-CP-ABE scheme, and prove its security in the standard model.
Keywords :
computational complexity; public key cryptography; SA-CP-ABE system; access policy complexity; attribute number; cipher text-policy ABE; computational resources; computing server; decryption computational costs scale; encryption computational costs scale; local storage resources; message decryption; message encryption; public key encryption; serve raided CP-ABE system; server aided ciphertext-policy attribute-based encryption; Encryption; Generators; Integrated circuits; Servers; Zinc; CP-ABE; composite order bilinear groups; dual system encryption; fully secure; server-aided;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Advanced Information Networking and Applications Workshops (WAINA), 2015 IEEE 29th International Conference on
Conference_Location :
Gwangiu
Print_ISBN :
978-1-4799-1774-7
Type :
conf
DOI :
10.1109/WAINA.2015.11
Filename :
7096215
Link To Document :
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