A Ciphertext-Policy Attribute-Based Encryption Scheme with Constant Ciphertext Length

Authors :: Kazumasa Omote
Masakazu Soshi
Keita Emura
Akito Nomura
Atsuko Miyaji
Source :: Lecture Notes in Computer Science. :13-23
Publication Year :: 2009
Publisher :: Springer, 2009.
Abstract: 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. In this paper, we propose a new Ciphertext-Policy Attribute-Based Encryption(CP-ABE) with constant ciphertext length. Moreover, the number of pairing computations is also constant.<br />Proceedings of the 5th International Conference, ISPEC 2009 Xi’an, China, April 13-15, 2009.

Subjects :: Plaintext-aware encryption
Theoretical computer science
Computer Networks and Communications
Computer science
CP-ABE
Applied Mathematics
Data_CODINGANDINFORMATIONTHEORY
Constant Ciphertext Length
ciphertext-policy attribute-based encryption
Deterministic encryption
Computational Mathematics
Attribute-based encryption
Ciphertext indistinguishability
Computational Theory and Mathematics
Malleability
Ciphertext
Key clustering
Semantic security
Ciphertext-Policy

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