A Simple and Efficient CCA-Secure Lattice KEM in the Standard Model

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Li, Qinyi
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2020
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Amalfi, Italy

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Abstract

We present, to date, the most efficient public-key encapsulation mechanism from integer lattices in the standard model. Our construction achieves adaptive CCA security through a “direct” chosen-ciphertext security technique without relying on any generic transformation. The security of our construction is based on the standard learning-with-errors assumption. The efficiency of our construction is almost the same as the best known non-adaptive CCA-secure construction.

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Lecture Notes in Computer Science

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12238

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© Springer Nature Switzerland AG 2020. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher.The original publication is available at www.springerlink.com

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Data management and data science

Information and computing sciences

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Li, Q, A Simple and Efficient CCA-Secure Lattice KEM in the Standard Model, 2020, 12238, pp. 321-337