Results 161 to 170 of about 5,213 (200)

Ciphertext policy-hiding attribute-based encryption

2015 International Conference on Advances in Computing, Communications and Informatics (ICACCI), 2015
Ciphertext-policy attribute based encryption (CP-ABE) is becoming very important in distributed computing environment, because it makes easier to protect, broadcast and control the access of information, especially over the cloud server. In CP-ABE every plaintext is encrypted under an access structure, defined on the user's attribute and users have ...
Umesh Chandra Yadav, Syed Taqi Ali
openaire   +1 more source

Securely outsourcing the ciphertext-policy attribute-based encryption

World Wide Web, 2017
Attribute-based Encryption (ABE) is a new and promising public key encryption that allows fine-grained authorization on data based on user attributes. Such property is favorable for multiple applications that require encrypted storage or access control on data, in particular: eHealth applications.
Kim Thuat Nguyen, Nouha Oualha, Maryline Laurent   +2 more
openaire   +1 more source

Ciphertext policy attribute-based encryption from lattices

Proceedings of the 7th ACM Symposium on Information, Computer and Communications Security, 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. In this paper, we first propose a ciphertext policy attribute-based encryption (CP-ABE) scheme from lattices, which supports flexible threshold access ...
Jiang Zhang 0001, Zhenfeng Zhang, Aijun Ge 0001   +2 more
openaire   +1 more source

GPU Acceleration of Ciphertext-Policy Attribute-Based Encryption

2019 20th IEEE/ACIS International Conference on Software Engineering, Artificial Intelligence, Networking and Parallel/Distributed Computing (SNPD), 2019
With the development of cloud computing, data security became popular in recent decades. However, traditional cryptography has some major limitations. For example, public key cryptography is not scalable in cases with many clients. Since Ciphertext-Policy Attribute-based encryption (CP-ABE) was developed in 2007, it has become as one of the major ...
Kai Fan, Chaoyu Zhang, Ruiwen Shan, Hexuan Yu, Hai Jiang 0003   +4 more
openaire   +1 more source

Server Aided Ciphertext-Policy Attribute-Based Encryption

2015 IEEE 29th International Conference on Advanced Information Networking and Applications Workshops, 2015
Attribute-based encryption (ABE) is a type of public key encryption that allows users to encrypt and decrypt messages based on user attributes. One drawback is that encryption and decryption computational costs scale with the complexity of the access policy or number of attributes. In practice, this makes encryption and decryption a possible bottleneck
Hao Wang 0007, Bo Yang, Yilei Wang
openaire   +1 more source

Bounded Ciphertext Policy Attribute Based Encryption

2008
In a ciphertext policy attribute based encryption system, a user's private key is associated with a set of attributes (describing the user) and an encrypted ciphertext will specify an access policy over attributes. A user will be able to decrypt if and only if his attributes satisfy the ciphertext's policy.
Vipul Goyal, Abhishek Jain 0002, Omkant Pandey, Amit Sahai   +3 more
openaire   +1 more source

Recipient Anonymous Ciphertext-Policy Attribute Based Encryption

2013
Attribute Based Encryption ABE is a promising and increasingly versatile paradigm. Given the many potential uses of ABE schemes, constructing efficient schemes that provide recipient anonymity via policy hiding while ensuring constant-size secret key and ciphertext with strong security notion is a challenging task.
Y. Sreenivasa Rao, Ratna Dutta
openaire   +1 more source

Decentralized ciphertext-policy attribute-based encryption schemes for lightweight devices

Computer Communications, 2019
In a traditional attribute-based encryption (ABE) system, there is only one central authority who generates and hence knows the secret keys of all users, this problem is known as the key escrow problem.
Abdullatif Shikfa, Viet Cuong Trinh
exaly   +2 more sources

An Improved Ciphertext-Policy Attribute-Based Encryption Scheme

2017
According to characteristics of mass encryption service in cloud storage, this paper proposed an improved SCP-OOABE scheme which uses the access control tree as a control structure and decomposes key generation and encryption into online and offline phase respectively that could be finished in a short time in online phase.
Hua Zheng, Xi Zhang, Qi Yang
openaire   +1 more source

Privacy Preserving Ciphertext Policy Attribute Based Encryption

2010
Ciphertext policy attribute based encryption (CP-ABE) allows to encrypt data under an access policy. The access policy can be formed with the logical combination of attributes.. Such ciphertexts can be decrypted by anyone with a set of attributes that satisfy the access policy. In CP-ABE, access policy is sent along with the ciphertext.
A. Balu, Kuppusamy Krishnamoorthy
openaire   +1 more source