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Symmetric-Key Encryption Scheme with Multi-ciphertext Non-malleability

  • Akinori Kawachi
  • Hirotoshi Takebe
  • Keisuke Tanaka
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7631)

Abstract

A standard notion of non-malleability is that an adversary cannot forge a ciphertext c′ from a single valid ciphertext c for which a plaintext m′ of c′ is meaningfully related to a plaintext m of c. The multi-ciphertext non-malleability is a stronger notion; an adversary is allowed to obtain multiple ciphertexts c 1,c 2,... in order to forge c′. We provide an efficient symmetric-key encryption scheme with an information-theoretic version of the multi-ciphertext non-malleability in this paper by using ℓ-wise almost independent permutations of Kaplan, Naor, and Reingold.

Keywords

symmetric-key encryption information-theoretic security non-malleability 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Akinori Kawachi
    • 1
  • Hirotoshi Takebe
    • 1
  • Keisuke Tanaka
    • 1
  1. 1.Department of Mathematical and Computing SciencesTokyo Institute of TechnologyMeguro-kuJapan

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