Journal of Mathematical Cryptology (Nov 2020)

Factoring with Hints

  • Sica Francesco

DOI
https://doi.org/10.1515/jmc-2020-0078
Journal volume & issue
Vol. 15, no. 1
pp. 123 – 130

Abstract

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We introduce a new approach to (deterministic) integer factorisation, which could be described in the cryptographically fashionable term of “factoring with hints”: we prove that, for any ϵ > 0, given the knowledge of the factorisations of O(N1/3+ϵ) terms surrounding N = pq product of two large primes, we can recover deterministically p and q in O(N1/3+ϵ) bit operations. This shows that the factorisations of close integers are non trivially related and that consequently one can expect more results along this line of thought.

Keywords