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CCA2 Secure IBE: Standard Model Efficiency through Authenticated Symmetric Encryption

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Topics in Cryptology – CT-RSA 2008 (CT-RSA 2008)

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Abstract

We propose two constructions of chosen-ciphertext secure identity-based encryption (IBE) schemes. Our schemes have a security proof in the standard model, yet they offer performance competitive with all known random-oracle based schemes. The efficiency improvement is obtained by combining modifications of the IBE schemes by Waters [38] and Gentry [21] with authenticated symmetric encryption.

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Tal Malkin

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Kiltz, E., Vahlis, Y. (2008). CCA2 Secure IBE: Standard Model Efficiency through Authenticated Symmetric Encryption. In: Malkin, T. (eds) Topics in Cryptology – CT-RSA 2008. CT-RSA 2008. Lecture Notes in Computer Science, vol 4964. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-79263-5_14

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  • DOI: https://doi.org/10.1007/978-3-540-79263-5_14

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-79262-8

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