Verifiable Partial Escrow of Integer Factors

  • Authors:
  • Wenbo Mao

  • Affiliations:
  • Hewlett-Packard Laboratories, Filton Road, Stoke Gifford, Bristol BS34 8QZ, United Kingdomwm@hplb.hpl.hp.com

  • Venue:
  • Designs, Codes and Cryptography
  • Year:
  • 2001

Quantified Score

Hi-index 0.00

Visualization

Abstract

We construct an efficient interactive protocol for realizing verifiable partial escrow of the factors of an integer n with time-delayed and threshold key recovery features. The computational cost of the new scheme amounts to 10k\log_2P multiplications of numbers of size of P, where P is a protocol parameter which permits n of size up to (\log_2P) -4 to be dealt with and k is a security parameter which controls the error probability for correct key escrow under 1/2^k. The new scheme realizes a practical method for fine tuning the time complexity for factoring an integer, where the complexity tuning has no respect to the size of the integer.