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Multi-Use Unidirectional Proxy Re-Encryption

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4 Author(s)
Jun Shao ; Coll. of Inf. & Comput. Eng., Zhejiang Gongshang Univ., Hangzhou, China ; Peng Liu ; Zhenfu Cao ; Guiyi Wei

This paper presents the first multi-use unidirectional proxy re-encryption scheme proven-secure against chosenciphertext attacks and collusion attacks in the standard model. Although our proposal features a linear ciphertext size and decryption time in the number of translations, we emphasize that it is the first multi-use and unidirectional realization of the primitive satisfying the chosen-ciphertext security and collusion resistance. The proposal gives an answer to the problem proposed by Canetti and Hohenberger at ACM CCS 2007.

Published in:

Communications (ICC), 2011 IEEE International Conference on

Date of Conference:

5-9 June 2011

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