Paper 2021/1371
A Generic Construction of CCA-secure Attribute-based Encryption with Equality Test
Kyoichi Asano and Keita Emura and Atsushi Takayasu and Yohei Watanabe
Abstract
Attribute-based encryption with equality test ($\mathsf{ABEET}$) is an extension of the ordinary attribute-based encryption ($\mathsf{ABE}$), where trapdoors enable us to check whether two ciphertexts are encryptions of the same message. Thus far, several CCA-secure $\mathsf{ABEET}$ schemes have been proposed for monotone span programs satisfying selective security under $q$-type assumptions. In this paper, we propose a generic construction of CCA-secure $\mathsf{ABEET}$ from delegatable $\mathsf{ABE}$. Specifically, our construction is an attribute-based extension of Lee et al.'s generic construction of identity-based encryption with equality test from hierarchical identity-based encryption. Even as far as we know, there are various delegatable $\mathsf{ABE}$ schemes. Therefore, we obtain various $\mathsf{ABEET}$ schemes with new properties that have not been achieved before such as various predicates, adaptive security, standard assumptions, compact ciphertexts/secret keys, and lattice-based constructions.
Metadata
- Available format(s)
- Category
- Public-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- attribute-based encryptionequality testchosen-ciphertext securitygeneric construction
- Contact author(s)
- k asano @ uec ac jp,k-emura @ nict go jp,takayasu-a @ g ecc u-tokyo ac jp,watanabe @ uec ac jp
- History
- 2024-04-02: last of 2 revisions
- 2021-10-12: received
- See all versions
- Short URL
- https://ia.cr/2021/1371
- License
-
CC BY