Towards Attribute Revocation in Key-Policy Attribute Based Encryption

2011 ◽  
pp. 272-291 ◽  
Author(s):  
Pengpian Wang ◽  
Dengguo Feng ◽  
Liwu Zhang
Keyword(s):  
Attribute Based Encryption ◽  
Key Policy

Key-policy attribute-based encryption against continual auxiliary input leakage

2019 ◽  
Vol 470 ◽  
pp. 175-188 ◽  
Author(s):  
Jiguo Li ◽  
Qihong Yu ◽  
Yichen Zhang ◽  
Jian Shen
Keyword(s):  
Attribute Based Encryption ◽  
Key Policy ◽  
Auxiliary Input

Unbounded Key-Policy Attribute-Based Encryption With Black-Box Traceability

2020 ◽  
Author(s):  
yunxiu ye ◽  
Zhenfu Cao ◽  
Jiachen Shen
Keyword(s):  
Control Method ◽  
Black Box ◽  
Broadcast Encryption ◽  
Constant Number ◽  
Malicious User ◽  
Attribute Based Encryption ◽  
Key Policy ◽  
Actual Operation ◽  
Attribute Based Access Control ◽  
And Performance

Abstract Attribute-based encryption received widespread attention as soon as it proposes. However, due to its specific characteristics, the attribute-based access control method is not flexible enough in actual operation. In addition, since access authorities are determined according to users' attributes, users sharing the same attributes are difficult to distinguish. Once a malicious user makes illicit gains by their decryption authorities, it is difficult to trace specific users. This paper follows the practical demand to propose a more flexible key-policy attribute-based encryption scheme with black-box traceability. The scheme has a constant number of constant parameters which can be utilized to construct attribute-related parameters flexibly, and the method of traitor tracing in broadcast encryption is introduced to achieve effective malicious user tracing. In addition, the security and feasibility can be proved by the security proofs and performance evaluation in this paper.

scholarly journals Key Policy Attribute Based Encryption in Cloud Storage

2016 ◽  
Vol 18 (05) ◽  
pp. 64-71 ◽  
Author(s):  
Prof. Dipa Dharmadhikari ◽  
Sonali Deshpande
Keyword(s):  
Cloud Storage ◽  
Attribute Based Encryption ◽  
Key Policy

scholarly journals A Novel method to represent Access Tree structure by Context Free Grammar with and-or graph in Key Policy based Attribute based Encryption

2018 ◽  
Vol 7 (4.10) ◽  
pp. 396
Author(s):  
K. Senthil Kumar ◽  
D. Malathi
Keyword(s):  
Access Control ◽  
Control Structure ◽  
Expressive Power ◽  
Third Party ◽  
Efficient Manner ◽  
Context Free Grammar ◽  
Fine Grained ◽  
Attribute Based Encryption ◽  
Key Policy ◽  
Context Free

Important and sensitivity data of users in a third party managed internet or cloud always pose various security as well as privacy issues. Attribute-based encryption (ABE) is a pleasant trend in the literature which addresses above problem in an efficient way, and provides data security and fine-grained access control in a decentralized manner,. Key-policy attribute-based encryption (KP-ABE) is an important type of ABE, in which user can decrypt his message with a set of attributes and private keys are embedded with a access control structure which defines which cipher text  an user can be allowed to decrypt. In this paper we use a probabilistic context free grammar with an And-Or structure to represent access control structure. And-Or graph has high expressive power hence access control structure can be represented in an efficient manner.  

Quantum Key-Policy Attribute-based Encryption

2017 ◽  
Vol 7 (2) ◽  
pp. 542
Author(s):  
Gabriela Mogos
Keyword(s):  
Attribute Based Encryption ◽  
Key Policy ◽  
Encryption Decryption

Attribute-Based Encryption is a relatively new concept in the field of cryptography, and it allows only the authorized entities to decrypt a message. This type of encryption is the mechanism by which the users may encrypt and decrypt data based on user attributes. This paper proposes the first quantum alternative of the scheme Key-Policy Attribute-Based Encryption, where the information, the encryption/decryption key, and the attributes are made of qutrits.

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