Results 21 to 30 of about 629 (227)
Revocable attribute-based proxy re-encryption
Journal of Mathematical Cryptology, 2021 Attribute-based proxy re-encryption (ABPRE), which combines the notions of proxy re-encryption (PRE) and attribute-based encryption (ABE), allows a semi-trusted proxy with re-encryption key to transform a ciphertext under a particular access policy into ...
Luo Fucai, Al-Kuwari Saif
doaj +1 more source
Functional Encryption for Pattern Matching with a Hidden String
Cryptography, 2021 We propose a new functional encryption for pattern matching scheme with a hidden string. In functional encryption for pattern matching (FEPM), access to a message is controlled by its description and a private key that is used to evaluate the description
Jongkil Kim +4 more
doaj +1 more source
Efficient Private Conjunctive Query Protocol Over Encrypted Data
Cryptography, 2021 Conjunctive queries play a key role in retrieving data from a database. In a database, a query containing many conditions in its predicate, connected by an “and/&/∧” operator, is called a conjunctive query.
Tushar Kanti Saha, Takeshi Koshiba
doaj +1 more source
Predicate encryption for multi‐inner‐products [PDF]
Security and Communication Networks, 2012 ABSTRACTPredicate encryption is a new primitive that supports flexible control over access to encrypted data. We study predicate encryption systems, evaluating a wide class of predicates. Our systems are more expressive than the existing attribute‐hiding systems in the sense that the proposed constructions support not only all existing predicate ...
Sun, Donald +2 more
openaire +2 more sources
Hierarchical Predicate Encryption for Inner-Products [PDF]
, 2009 This paper presents a hierarchical predicate encryption (HPE) scheme for inner-product predicates that is secure (selectively attribute-hiding) in the standard model under new assumptions. These assumptions are non-interactive and of fixed size in the number of adversary's queries (i.e., not "q -type"), and are proven to hold in the generic model.
Tatsuaki Okamoto, Katsuyuki Takashima
openaire +1 more source
Predicate Encryption for Circuits from LWE [PDF]
, 2015 In predicate encryption, a ciphertext is associated with descriptive attribute values x in addition to a plaintext \(\mu \), and a secret key is associated with a predicate f. Decryption returns plaintext \(\mu \) if and only if \(f(x) = 1\). Moreover, security of predicate encryption guarantees that an adversary learns nothing about the attribute x or
Gorbunov, Sergey +2 more
openaire +4 more sources
Trigonometric words ranking model for spam message classification
IET Networks, EarlyView., 2022 Abstract The significant increase in the volume of fake (spam) messages has led to an urgent need to develop and implement a robust anti‐spam method. Several of the current anti‐spam systems depend mainly on the word order of the message in determining the spam message, which results in the system's inability to predict the correct type of message when
Suha Mohammed Hadi +7 more
wiley +1 more source
SSE: A Secure Searchable Encryption Scheme for Urban Sensing and Querying
International Journal of Distributed Sensor Networks, 2013 With the distributed sensors that are deployed to monitor the urban environment in smart cities, the sensed data are overwhelming and beyond the scope of the wireless sensor networks (WSNs) capability. Due to the communication range limits of the sensors,
Mi Wen, Jingsheng Lei, Zhongqin Bi
doaj +1 more source
Predicate signatures from pair encodings via dual system proof technique
Journal of Mathematical Cryptology, 2019 Recently, Attrapadung (Eurocrypt 2014) proposed a generic framework for fully (adaptively) secure predicate encryption (PE) based on a new primitive, called pair encodings.
Nandi Mridul, Pandit Tapas
doaj +1 more source
Multi-tenant virtual domain isolation construction method based on L-DHT
Tongxin xuebao, 2020 Aiming at the problem of security isolation of multi-tenant data in cloud environment,a tenant virtual domain isolation construction method based on L-DHT was proposed.Firstly,through the design of multi-tenant isolation mapping algorithm based on label ...
Lifeng CAO +3 more
doaj +2 more sources