Cryptology ePrint Archive: Report 2007/274

Group-based Proxy Re-encryption scheme

Chunbo Ma, Jun Ao, and Jianhua Li

Abstract: Recently, proxy re-encryption scheme received much attention. In this paper, we propose a proxy re-encryption used for divert ciphertext from one group to another. The scheme is bidirectional and any member can independently decrypt the ciphertexts encrypted to its group. We discuss the security of the proposed scheme and show that our scheme withstands chosen ciphertext attack in standard model.

Category / Keywords: public-key cryptography /

Date: received 15 Jul 2007, last revised 28 Oct 2007

Contact author: machunbo at sjtu edu cn

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Version: 20071028:235847 (All versions of this report)

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