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Efficient post-quantum identity-based encryption with equality test

Conference Paper


Abstract


  • Public 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.

Publication Date


  • 2020

Citation


  • Susilo, W., Duong, D. H., & Le, H. Q. (2020). Efficient post-quantum identity-based encryption with equality test. In Proceedings of the International Conference on Parallel and Distributed Systems - ICPADS Vol. 2020-December (pp. 633-640). doi:10.1109/ICPADS51040.2020.00088

Scopus Eid


  • 2-s2.0-85102357583

Start Page


  • 633

End Page


  • 640

Volume


  • 2020-December

Abstract


  • Public 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.

Publication Date


  • 2020

Citation


  • Susilo, W., Duong, D. H., & Le, H. Q. (2020). Efficient post-quantum identity-based encryption with equality test. In Proceedings of the International Conference on Parallel and Distributed Systems - ICPADS Vol. 2020-December (pp. 633-640). doi:10.1109/ICPADS51040.2020.00088

Scopus Eid


  • 2-s2.0-85102357583

Start Page


  • 633

End Page


  • 640

Volume


  • 2020-December