Results 81 to 90 of about 5,213 (200)

An Access Control Scheme Based on Blockchain and Ciphertext Policy-Attribute Based Encryption. [PDF]

Sensors (Basel), 2023
Hu R, Ma Z, Li L, Zuo P, Li X, Wei J, Liu S.   +6 more
europepmc   +1 more source

Decentralized Ciphertext-Policy Attribute-Based Encryption: A Post-Quantum Construction

, 2017
In Ciphertext Policy Attribute-Based Encryption (CP-ABE) system, a set of attributes is associated with the private keys of each user. Also, the ciphertext is attached with a policy which is defined over that set of attributes.
Mohammad Shahriar Rahman, Anirban Basu, Shinsaku Kiyomoto   +2 more
core   +1 more source

Ciphertext-Policy Attribute-Based Proxy Re-Encryption with Non-Interactivity from Lattices

, 2022
Along with the gradual increase in data encryption applications, it is required to trans- form access permissions of ciphertexts in some scenarios. Combining the proxy re-encryption mechanism with the attribute-based encryption mechanism can reduce the ...
Chang, Ya-Chih
core  

ciphertext policy attribute-based encryption from lattices: extended abstract

, 2012
Sahai and Waters [6] proposed Attribute-Based Encryption (ABE) as a new paradigm of encryption algorithms that allow the sender to set a policy describing who can decrypt a particular ciphertext.
Ge Aijun, Zhang Zhenfeng, Zhang Jiang
core  

mRLWE-CP-ABE: A revocable CP-ABE for post-quantum cryptography

Journal of Mathematical Cryptology
We address the problem of user fast revocation in the lattice-based Ciphertext Policy Attribute-Based Encryption (CP-ABE) by extending the scheme originally introduced by Zhang and Zhang [Zhang J, Zhang Z.
Cianfriglia Marco, Onofri Elia, Pedicini Marco   +2 more
doaj   +1 more source

Security of discrete log cryptosystems in the random oracle and the generic model

, 1999
We introduce novel security proofs that use combinatorial counting arguments rather than reductions to the discrete logarithm or to the Diffie-Hellman problem. Our security results are sharp and clean with no polynomial reduction times involved.
Jakobsson, Markus, Schnorr, Claus Peter
core  

Efficient and Provable Secure Ciphertext-Policy Attribute-Based Encryption Schemes [PDF]

, 2008
In a ciphertext-policy attribute-based encryption (CP-ABE) scheme, the data is encrypted under an access policy defined by a user who encrypts the data and a user secret key is associated with a set of attributes which identify the user.
Ibraimi, Luan, Hartel, Pieter H., Ibraimi, L., Hartel, Pieter, Luan Ibraimi, Pieter Hartel, Tang, Qiang, Jonker, Willem, Willem Jonker, Qiang Tang   +9 more
core   +1 more source

Mediated Ciphertext-Policy Attribute-Based Encryption and its Application (extended version) [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.
Hartel, Pieter H., Petkovic, M., Ibraimi, L., Jonker, Willem, Nikova, S.I.   +4 more
core  

Ciphertext-Policy Attribute Based Encryption with Selectively-Hidden Access Policy

, 2021
In conventional Ciphertext-Policy Attribute-Based Encryption (CP-ABE), the access policy appears in plaintext form that might reveal confidential user information and violate user privacy.
Helil, Nurmamat, Arkin, Gulmire
core  

efficient ciphertext policy attribute-based encryption with constant-size ciphertext and constant computation-cost

, 2011
The National Natural Science Foundation of China (NSFC); Xidian Univ., Key Lab. Comput. Networks; Inf. Secur., Minist. Educ.Attribute-based encryption provides good solutions to the problem of anonymous access control by specifying access policies among ...
Chen Cheng, Dengguo Feng, Feng Dengguo, Zhang Zhenfeng, Cheng Chen, Zhenfeng Zhang   +5 more
core   +1 more source