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Distributed Attribute-Based Encryption

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Part of the book series:Lecture Notes in Computer Science ((LNSC,volume 5461))

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Abstract

Ciphertext-Policy Attribute-Based Encryption (CP-ABE) allows to encrypt data under an access policy, specified as a logical combination of attributes. Such ciphertexts can be decrypted by anyone with a set of attributes that fits the policy. In this paper, we introduce the concept of Distributed Attribute-Based Encryption (DABE), where an arbitrary number of parties can be present to maintain attributes and their corresponding secret keys. This is in stark contrast to the classic CP-ABE schemes, where all secret keys are distributed by one central trusted party. We provide the first construction of a DABE scheme; the construction is very efficient, as it requires only a constant number of pairing operations during encryption and decryption.

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Author information

Authors and Affiliations

  1. Technische Universität Darmstadt, Hochschulstr. 10, D – 64289, Darmstadt, Germany

    Sascha Müller, Stefan Katzenbeisser & Claudia Eckert

Authors
  1. Sascha Müller

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  2. Stefan Katzenbeisser

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  3. Claudia Eckert

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Editor information

Editors and Affiliations

  1. Department of Electronic and Electrical Engineering, Pohang University of Science and Technology (POSTECH), San 31 Hyoja-dong, Nam-gu,, 790-784, Pohang, Kyungbuk, Korea

    Pil Joong Lee

  2. Department of Mathematical Sciences, Seoul National University, 599 Gwanakno, Gwanak-gu, 151-742, Seoul, Korea

    Jung Hee Cheon

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© 2009 Springer-Verlag Berlin Heidelberg

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Müller, S., Katzenbeisser, S., Eckert, C. (2009). Distributed Attribute-Based Encryption. In: Lee, P.J., Cheon, J.H. (eds) Information Security and Cryptology – ICISC 2008. ICISC 2008. Lecture Notes in Computer Science, vol 5461. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-00730-9_2

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