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QC-LDPC Code-Based CryptographyQC-LDPC Code-Based Cryptosystems

QC-LDPC Code-Based Cryptography: QC-LDPC Code-Based Cryptosystems [In this chapter, the use of QC-LDPC codes in public key cryptosystems inspired to the McEliece and Niederreiter systems is studied. Both the case in which the private and the public code are permutation equivalent and that in which such an equivalence is absent are considered. It is shown that the use of this kind of codes may expose the system to new attacks, which can be very dangerous if the system is not suitably designed. The countermeasures to be used against these attacks are described, and some practical instances of QC-LDPC code-based public key cryptosystems achieving some specific security levels are provided. The chance to use QC-LDPC codes also in digital signature schemes and symmetric cryptosystems is briefly discussed.] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

QC-LDPC Code-Based CryptographyQC-LDPC Code-Based Cryptosystems

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Publisher
Springer International Publishing
Copyright
© The Author(s) 2014
ISBN
978-3-319-02555-1
Pages
91 –117
DOI
10.1007/978-3-319-02556-8_6
Publisher site
See Chapter on Publisher Site

Abstract

[In this chapter, the use of QC-LDPC codes in public key cryptosystems inspired to the McEliece and Niederreiter systems is studied. Both the case in which the private and the public code are permutation equivalent and that in which such an equivalence is absent are considered. It is shown that the use of this kind of codes may expose the system to new attacks, which can be very dangerous if the system is not suitably designed. The countermeasures to be used against these attacks are described, and some practical instances of QC-LDPC code-based public key cryptosystems achieving some specific security levels are provided. The chance to use QC-LDPC codes also in digital signature schemes and symmetric cryptosystems is briefly discussed.]

Published: May 3, 2014

Keywords: QC-LDPC code-based cryptosystems; Permutation-equivalent codes; Cryptanalysis; Information set decoding; Key size; Complexity

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