Paper 2019/638 Original: eprint.iacr.org/2019/638 ↗

On the Distribution of Quadratic Residues and Non-residues Modulo Composite Integers and Applications to Cryptography

Ferucio Laurentiu Tiplea
Sorin Iftene
George Teseleanu
Anca-Maria Nica
Abstract

We develop exact formulas for the distribution of quadratic residues and non-residues in sets of the form $a+X=\{(a+x)\bmod n\mid x\in X\}$, where $n$ is a prime or the product of two primes and $X$ is a subset of integers with given Jacobi symbols modulo prime factors of $n$. We then present applications of these formulas to Cocks' identity-based encryption scheme and statistical indistinguishability.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Preprint.
History
2022-03-15: last updated
2019-06-03: published
Short URL
https://ia.cr/2019/638
License
https://creativecommons.org/licenses/by/4.0/

BibTeX

@misc{cryptoeprint:2019/638,
      author = {Ferucio Laurentiu Tiplea and Sorin Iftene and George Teseleanu and Anca-Maria Nica},
      title = {On the Distribution of Quadratic Residues and Non-residues Modulo Composite Integers and Applications to Cryptography},
      howpublished = {Cryptology {ePrint} Archive, Paper 2019/638},
      year = {2019},
      url = {https://eprint.iacr.org/2019/638}
}
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