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An efficient format-preserving encryption mode for practical domains

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Wuhan University Journal of Natural Sciences

Abstract

Format-preserving encryption (FPE), which makes sure that ciphertext has the same format as plaintext, has been widely used in protecting sensitive data in a database. Aiming at efficiently solving the FPE problem on a collection of practical domains, we propose the RREM (random reference-based encryption mode), which constructs bijection between the original domain and integer set through distance computation. If an appropriate distance function is predefined, the proposed mode can solve the FPE problem on linear equidistance domain in a more efficient way than previous methods. Furthermore, we make a classification on various types of domains, show the application of RREM in some practical domains, and specify RREM’s capability of solving the FPE problem on frequently-used fields in database quite efficiently.

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Authors and Affiliations

  1. College of Information Technical Science, Nankai University, Tianjin, 300071, China

    Jingwei Li, Zheli Liu & Chunfu Jia

  2. School of Mathematics and Computer Science, Fujian Normal University, Fuzhou, 350007, Fujian, China

    Li Xu

Authors
  1. Jingwei Li
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  2. Zheli Liu
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  3. Li Xu
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  4. Chunfu Jia
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Corresponding author

Correspondence to Zheli Liu.

Additional information

Foundation item: Supported by the National Natural Science Foundation of China (60973141), the Specialized Research Fund for the Doctoral Program of Higher Education of China (20100031110030), the Funds of Key Lab of Fujian Province University Network Security and Cryptology (2011004), and the Fundamental Research Funds for the Central Universities

Biography: LI Jingwei, male, Ph. D. candidate, research direction: information security, applied cryptography, etc.

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Li, J., Liu, Z., Xu, L. et al. An efficient format-preserving encryption mode for practical domains. Wuhan Univ. J. Nat. Sci. 17, 428–434 (2012). https://doi.org/10.1007/s11859-012-0865-9

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  • DOI: https://doi.org/10.1007/s11859-012-0865-9

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