A generic construction from Selective-IBE to public-key encryption with non-interactive opening

Authors:
Jiang Zhang;Xiang Xie;Rui Zhang;Zhenfeng Zhang
Affiliations:
State Key Laboratory of Information Security, Institute of Software, Chinese Academy of Sciences, Beijing, China;State Key Laboratory of Information Security, Institute of Software, Chinese Academy of Sciences, Beijing, China;State Key Laboratory of Information Security, Institute of Software, Chinese Academy of Sciences, Beijing, China;State Key Laboratory of Information Security, Institute of Software, Chinese Academy of Sciences, Beijing, China
Venue:
Inscrypt'11 Proceedings of the 7th international conference on Information Security and Cryptology
Year:
2011

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Abstract

Public-key encryption schemes with non-interactive opening (PKENO) allow a receiver who received a ciphertext c to non-interactively convince third parties that the decryption of c is what he has claimed, without compromising the scheme's security. In this work, we present a generic construction from identity-based encryption scheme, which is secure against selective-ID and chosen plaintext attack (IND-sID-CPA), to PKENO with chameleon hash instead of the one-time signature technology. Our construction gives new view of IBE-to-PKENO technique, and some previously known PKENO schemes can be viewed as concrete instantiations of our generic construction. At last, we also give a new instantiation, which is (slightly) more efficient than the best known scheme [13].