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Delegation in Predicate Encryption Supporting Disjunctive Queries [PDF]
IFIP Advances in Information and Communication Technology, 2010 Predicate encryption has an advantage over traditional public-key or identity-based encryption, since predicate encryption systems provide more flexible control over access to encrypted data. We focus on delegation capabilities in predicate systems.
Colin Boyd +2 more
exaly +4 more sources
A multi-authority approach to various predicate encryption types [PDF]
Designs, Codes, and Cryptography, 2019 Abstract We propose a generic construction for fully secure decentralized multiauthority predicate encryption. In such multiauthority predicate encryption scheme, ciphertexts are associated with one or more predicates from various authorities and only if a user has a set of decryption keys that evaluates all predicates to true, the user is able to ...
Tim Van De Kamp +2 more
exaly +6 more sources
Adaptively Simulation-Secure Attribute-Hiding Predicate Encryption [PDF]
Lecture Notes in Computer Science, 2018 This paper demonstrates how to achieve simulation-based strong attribute hiding against adaptive adversaries for predicate encryption (PE) schemes supporting expressive predicate families under standard computational assumptions in bilinear groups. Our main result is a simulation-based adaptively strongly partially-hidingPE (PHPE) scheme for predicates
Pratish Datta +2 more
exaly +5 more sources
Public Key Encryption with Keyword Search in Cloud: A Survey [PDF]
Entropy, 2020 With the popularization of cloud computing, many business and individuals prefer to outsource their data to cloud in encrypted form to protect data confidentiality. However, how to search over encrypted data becomes a concern for users.
Yunhong Zhou +4 more
doaj +2 more sources
Attribute-Hiding Predicate Encryption With Equality Test in Cloud Computing
IEEE Access, 2018 Public key encryption with equality test (PKE-ET) enables anyone to perform equivalence test between two messages encrypted under distinct public keys.
Jianfei Sun, Yangyang Bao, Xuyun Nie
exaly +3 more sources
Predicate encryption against master-key tampering attacks [PDF]
Cybersecurity, 2019 Many real world attacks often target the implementation of a cryptographic scheme, rather than the algorithm itself, and a system designer has to consider new models that can capture these attacks.
Yuejun Liu, Rui Zhang, Yongbin Zhou
doaj +2 more sources
On Black-Box Reductions between Predicate Encryption Schemes [PDF]
Lecture Notes in Computer Science, 2012 We prove that there is no black-box construction of a threshold predicate encryption system from identity-based encryption. Our result signifies nontrivial progress in a line of research suggested by Boneh, Sahai and Waters (TCC '11), where they proposed a study of the relative power of predicate encryption for different functionalities. We rely on and
Vipul Goyal +2 more
exaly +2 more sources
Practical Inner Product Encryption with Constant Private Key
Applied Sciences, 2020 Inner product encryption, first introduced by Katz et al., is a type of predicate encryption in which a ciphertext and a private key correspond to an attribute vector and a predicate vector, respectively.
Yi-Fan Tseng, Zi-Yuan Liu, Raylin Tso
doaj +1 more source
Efficient Multi-Client Functional Encryption for Conjunctive Equality and Range Queries
IEEE Access, 2022 In multi-client functional encryption (MC-FE) for predicate queries, clients generate ciphertexts of plaintexts $x_{1}, \ldots, x_{n}$ binding with a time period $T$ and store them on a cloud server, and the cloud server receives a function key ...
Kwangsu Lee
doaj +1 more source
Decentralized Inner-Product Encryption with Constant-Size Ciphertext
Applied Sciences, 2022 With the rise of technology in recent years, more people are studying distributed system architecture, such as the e-government system. The advantage of this architecture is that when a single point of failure occurs, it does not cause the system to be ...
Yi-Fan Tseng, Shih-Jie Gao
doaj +1 more source