Results 11 to 20 of about 629 (227)
Predicate Privacy in Encryption Systems [PDF]
, 2009 Predicate encryption is a new encryption paradigm which gives a master secret key owner fine-grained control over access to encrypted data. The master secret key owner can generate secret key tokens corresponding to predicates. An encryption of data x can be evaluated using a secret token corresponding to a predicate f ; the user learns whether the ...
Emily Shen, Elaine Shi, Brent Waters
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Forward-Secure Hierarchical Predicate Encryption [PDF]
The Computer Journal, 2013 Secrecy of decryption keys is an important pre-requisite for security of any encryption scheme and compromised private keys must be immediately replaced. \emph{Forward Security (FS)}, introduced to Public Key Encryption (PKE) by Canetti, Halevi, and Katz (Eurocrypt 2003), reduces damage from compromised keys by guaranteeing confidentiality of messages ...
Juan Manuel González Nieto +2 more
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Fully Private Revocable Predicate Encryption [PDF]
, 2012 We introduce the concept of Revocable Predicate Encryption (RPE), which extends current predicate encryption setting with revocation support: private keys can be used to decrypt an RPE ciphertext only if they match the decryption policy (defined via attributes encoded into the ciphertext and predicates associated with private keys) and were not revoked
Juan Manuel González Nieto +2 more
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Delegating Capabilities in Predicate Encryption Systems [PDF]
, 2008 In predicate encryption systems, given a capability, one can evaluate one or more predicates on the plaintext encrypted, while all other information about the plaintext remains hidden. We consider the role of delegation in such predicate encryption systems.
Elaine Shi, Brent Waters
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Privacy preserving revocable predicate encryption revisited [PDF]
Security and Communication Networks, 2014 AbstractPredicate encryption (PE) that provides both the access control of ciphertexts and the privacy of ciphertexts is a new paradigm of public‐key encryption. An important application of PE is a searchable encryption system in cloud storage, where it enables a client to securely outsource the search of a keyword on encrypted data without revealing ...
Kwangsu Lee, Intae Kim, Seong Oun Hwang
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Predicate Encryption for Multi-dimensional Range Queries from Lattices [PDF]
, 2015 We construct a lattice-based predicate encryption scheme for multi-dimensional range and multi-dimensional subset queries. Our scheme is selectively secure and weakly attribute-hiding, and its security is based on the standard learning with errors (LWE) assumption.
Romain Gay, Pierrick Méaux, Hoeteck Wee
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Unbounded Predicate Inner Product Functional Encryption from Pairings [PDF]
Journal of Cryptology, 2023 AbstractPredicate inner product functional encryption (P-IPFE) is essentially attribute-based IPFE (AB-IPFE) which additionally hides attributes associated to ciphertexts. In a P-IPFE, a message $${\textbf {x}}$$ x is encrypted under an attribute $${\textbf {w}}$$ w and a secret key ...
Uddipana Dowerah +4 more
core +6 more sources
Practical Predicate Encryption for Inner Product [PDF]
Proceedings of the 17th International Joint Conference on e-Business and Telecommunications, 2020 Inner product encryption is a powerful cryptographic primitive, where a private key and a ciphertext are both associated with a predicate vector and an attribute vector, respectively.
Yi-Fan Tseng, Zi-Yuan Liu, Raylin Tso
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Multi-client Predicate-Only Encryption for Conjunctive Equality Tests [PDF]
, 2018 We propose the first multi-client predicate-only encryption scheme capable of efficiently testing the equality of two encrypted vectors. Our construction can be used for the privacy-preserving monitoring of relations among multiple clients. Since both the clients’ data and the predicates are encrypted, our system is suitable for situations in which ...
Tim van de Kamp +3 more
core +7 more sources
CCA-Security for predicate encryption schemes [PDF]
, 2017 In dieser Dissertationsschrift werfen wir zunächst einen kritischen Blick ausgehend vom aktuellen Stand der Forschung auf die Sicherheitsdefinitionen für die prädikatbasierten Verschlüsselungsverfahren mit öffentlichem Index (PE) unter Angriffen mit gewählten Klartexten (CPA) und unter Angriffen mit gewählten Chiffretexten (CCA).
Liske, Gennadij
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