Visible to the public Efficient Post-quantum Identity-based Encryption with Equality Test

TitleEfficient Post-quantum Identity-based Encryption with Equality Test
Publication TypeConference Paper
Year of Publication2020
AuthorsSusilo, Willy, Duong, Dung Hoang, Le, Huy Quoc
Conference Name2020 IEEE 26th International Conference on Parallel and Distributed Systems (ICPADS)
Date PublishedDec. 2020
ISBN Number978-1-7281-9074-7
KeywordsCCA2, Collaboration, composability, cryptology, Human Behavior, human factors, IBE with equality test, Identity-based encryption, lattice-based cryptography, Lattices, learning with errors, Metrics, pubcrawl, Public key, resilience, resilient, Scalability, smart cities, standard model, Standards, Testing, Wireless communication
AbstractPublic key encryption with equality test (PKEET) enables the testing whether two ciphertexts encrypt the same message. Identity-based encryption with equality test (IBEET) simplify the certificate management of PKEET, which leads to many potential applications such as in smart city applications or Wireless Body Area Networks. Lee et al. (ePrint 2016) proposed a generic construction of IBEET scheme in the standard model utilising a 3-level hierachy IBE together with a one-time signature scheme, which can be instantiated in lattice setting. Duong et al. (ProvSec 2019) proposed the first direct construction of IBEET in standard model from lattices. However, their scheme achieve CPA security only. In this paper, we improve the Duong et al.'s construction by proposing an IBEET in standard model which achieves CCA2 security and with smaller ciphertext and public key size.
Citation Keysusilo_efficient_2020