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Receiver Selective Opening Chosen Ciphertext Secure Identity-Based Encryption

Keisuke HARA, Takahiro MATSUDA, Keisuke TANAKA

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Summary :

In the situation where there are one sender and multiple receivers, a receiver selective opening (RSO) attack for an identity-based encryption (IBE) scheme considers adversaries that can corrupt some of the receivers and get their user secret keys and plaintexts. Security against RSO attacks for an IBE scheme ensures confidentiality of ciphertexts of uncorrupted receivers. In this paper, we formalize a definition of RSO security against chosen ciphertext attacks (RSO-CCA security) for IBE and propose the first RSO-CCA secure IBE schemes. More specifically, we construct an RSO-CCA secure IBE scheme based on an IND-ID-CPA secure IBE scheme and a non-interactive zero-knowledge proof system with unbounded simulation soundness and multi-theorem zero-knowledge. Through our generic construction, we obtain the first pairing-based and lattice-based RSO-CCA secure IBE schemes.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E105-A No.3 pp.160-172
Publication Date
2022/03/01
Publicized
2021/08/26
Online ISSN
1745-1337
DOI
10.1587/transfun.2021CIP0006
Type of Manuscript
Special Section PAPER (Special Section on Cryptography and Information Security)
Category

Authors

Keisuke HARA
  Tokyo Institute of Technology,National Institute of Advanced Industrial Science and Technology (AIST)
Takahiro MATSUDA
  National Institute of Advanced Industrial Science and Technology (AIST)
Keisuke TANAKA
  Tokyo Institute of Technology

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