scholarly journals Constant-Size Ciphertext Attribute-Based Encryption from Multi-channel Broadcast Encryption

2016 ◽  
pp. 193-211 ◽  
Author(s):  
Sébastien Canard ◽  
Viet Cuong Trinh
Keyword(s):  
Broadcast Encryption ◽  
Constant Size ◽  
Attribute Based Encryption

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.

Accountable authority identity-based broadcast encryption with constant-size private keys and ciphertexts

2020 ◽  
Vol 809 ◽  
pp. 73-87 ◽  
Author(s):  
Zhen Zhao ◽  
Fuchun Guo ◽  
Jianchang Lai ◽  
Willy Susilo ◽  
Baocang Wang ◽  
...  
Keyword(s):  
Broadcast Encryption ◽  
Constant Size ◽  
Identity Based

scholarly journals Adaptive CCA Broadcast Encryption with Constant-Size Secret Keys and Ciphertexts

2012 ◽  
pp. 308-321 ◽  
Author(s):  
Duong-Hieu Phan ◽  
David Pointcheval ◽  
Siamak F. Shahandashti ◽  
Mario Strefler
Keyword(s):  
Broadcast Encryption ◽  
Constant Size ◽  
Secret Keys
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