Results 11 to 20 of about 25,658,882 (194)
On efficient ciphertext-policy attribute based encryption and broadcast encryption [PDF]
Proceedings of the 17th ACM conference on Computer and communications security, 2010 Existing CP-ABE schemes incur very large ciphertext size, which increases linearly with respect to the number of attributes in the access policy. Large ciphertext prevents CP-ABE from being adopted in the communication constrained environments. In this paper, we proposed a new construction of CP-ABE, named Constant-size CP-ABE (denoted as CCP-ABE) that
Zhibin Zhou 0001, Dijiang Huang
core +8 more sources
Ciphertext-Policy Attribute-Based Encryption [PDF]
2007 IEEE Symposium on Security and Privacy (SP '07), 2007 In several distributed systems a user should only be able to access data if a user posses a certain set of credentials or attributes. Currently, the only method for enforcing such policies is to employ a trusted server to store the data and mediate access control.
John Bethencourt +2 more
core +4 more sources
Mediated Ciphertext-Policy Attribute-Based Encryption and Its Application [PDF]
, 2009 In Ciphertext-Policy Attribute-Based Encryption (CP-ABE), a user secret key is associated with a set of attributes, and the ciphertext is associated with an access policy over attributes. The user can decrypt the ciphertext if and only if the attribute set of his secret key satisfies the access policy specified in the ciphertext. Several CP-ABE schemes
Luan Ibraimi +4 more
core +5 more sources
Ciphertext policy Attribute based Encryption with anonymous access policy
International Journal of Peer to Peer Networks, 2010 In Ciphertext Policy Attribute based Encryption scheme, the encryptor can fix the policy, who can decrypt the encrypted message. The policy can be formed with the help of attributes. In CP-ABE, access policy is sent along with the ciphertext. We propose a method in which the access policy need not be sent along with the ciphertext, by which we are able
A.Balu, K.Kuppusamy
openaire +6 more sources
IET Information SecurityElectronic health records (EHRs) have become a crucial application in cloud computing environments, necessitating advanced privacy-preserving access control mechanisms. Ciphertext policy attribute-based encryption (CP-ABE) is a widely recognized solution
Khanadech Worapaluk, Somchart Fugkeaw
doaj +2 more sources
A ciphertext-policy attribute-based encryption scheme with constant ciphertext length [PDF]
International Journal of Applied Cryptography, 2009 An Attribute-Based Encryption (ABE) is an encryption scheme, where users with some attributes can decrypt ciphertexts associated with these attributes. However, the length of the ciphertext depends on the number of attributes in previous ABE schemes.
Keita Emura +4 more
openaire +4 more sources
RLWE-based ciphertext-policy attribute proxy re-encryption [PDF]
Tongxin xuebao, 2018 To solve LWE-based proxy re-encryption schemes cannot achieve fine-grained access and low efficiency problem,a ciphertext-policy attribute-based proxy re-encryption scheme was proposed.The scheme based on linear secret sharing scheme,RLWE and attribute ...
En ZHANG, Yaoyao PEI, Jiao DU
doaj +4 more sources
Provably Secure Ciphertext-Policy Attribute-Based Encryption from Identity-Based Encryption [PDF]
Journal of Universal Computer Science, 2019 Ciphertext-policy attribute-based encryption (CP-ABE) is an access control mechanism where a data provider encrypts a secret message and then sends the ciphertext to the receivers according to the access policy which she/he decides.
Yi-Fan Tseng, Chun-I Fan, Chih-Wen Lin
doaj +4 more sources
A Ciphertext Policy Attribute-Based Encryption Scheme without Pairings
, 2012 Sahai and Waters [34] proposed Attribute-Based Encryption (ABE) as a new paradigm of encryption algorithms that allow the sender to set a policy to describe who can read the secret data. In recent years, lots of attribute-based schemes appeared in literatures, but almost all the schemes, to the best of our knowledge, are constructed from pairings.
Jiang Zhang 0001, Zhenfeng Zhang
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CAAI Transactions on Intelligence Technology, EarlyView., 2023 Abstract This research focuses on addressing the privacy issues in healthcare advancement monitoring with the rapid establishment of the decentralised communication system in the Internet of Medical Things (IoMT). An integrated blockchain homomorphic encryption standard with an in‐build supervised learning‐based smart contract is designed to improvise ...
Chandramohan Dhasarathan +7 more
wiley +1 more source