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Towards Public Key Encryption Scheme Supporting Equality Test with Fine-Grained Authorization

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Information Security and Privacy (ACISP 2011)

Part of the book series: Lecture Notes in Computer Science ((LNSC,volume 6812))

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Abstract

In this paper we investigate a new category of public key encryption schemes which supports equality test between ciphertexts. With this primitive, two users, who possess their own public/private key pairs, can issue token(s) to a proxy to authorize it to perform equality test between their ciphertexts. We provide a formulation and a corresponding construction for this primitive, and our formulation provides fine-grained authorization policy enforcements for users. With the increasing popularity of outsourcing data and computations to third-party service providers, this primitive will be an important building block in designing privacy protection solutions supporting operations on encrypted data.

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Tang, Q. (2011). Towards Public Key Encryption Scheme Supporting Equality Test with Fine-Grained Authorization. In: Parampalli, U., Hawkes, P. (eds) Information Security and Privacy. ACISP 2011. Lecture Notes in Computer Science, vol 6812. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-22497-3_25

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  • DOI: https://doi.org/10.1007/978-3-642-22497-3_25

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-22496-6

  • Online ISBN: 978-3-642-22497-3

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