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Factoring a Multiprime Modulus N with Random Bits

  • Routo TeradaEmail author
  • Reynaldo Cáceres Villena
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7807)

Abstract

In 2009, Heninger and Shacham presented an algorithm using the Hensel’s lemma for reconstructing the prime factors of the modulus \(N = r_1r_2\). This algorithm computes the prime factors of N in polynomial time, with high probability, assuming that a fraction greater than or equal to 59 % random bits of its primes \(r_1\) and \(r_2\) is given. In this paper, we present the analysis of Hensel’s lemma for a multiprime modulus \(N = \prod ^u_{i=1}r_i\) (for \(u\ge 2\)) and we generalise the Heninger and Shacham’s algorithm to determine the minimum fraction of random bits of its prime factors that is sufficient to factor N in polynomial time with high probability.

Keywords

Factoring a multiprime modulus N Random key bits leakage attack Cold boot attack 

Notes

Acknowledgment

We thank anonymous referees who pointed out the work by Kogure et al. [9].

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.Department of Computer ScienceUniversity of São PauloSão PauloBrazil

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