Partial Hiding in Public-Key Cryptography

Eabhnat N\'ı Fhloinn; Michael Purser

Paper 2005/021

Partial Hiding in Public-Key Cryptography

Eabhnat N\'ı Fhloinn and Michael Purser

Abstract

This paper explores the idea of partially exposing sections of the private key in public-key cryptosystems whose security is based on the intractability of factorising large integers. It is proposed to allow significant portions of the private key to be publicly available, reducing the amount of data which must be securely hidden. The ``secret'' data could be XORed with an individual's biometric reading in order to maintain a high level of security, and we suggest using iris templates for this purpose. Finally, we propose an implementation of this system for RSA, and consider the potential risks and advantages associated with such a scheme.

Metadata

Available format(s): PS
Category: Public-key cryptography
Publication info: Published elsewhere. Unknown where it was published
Keywords: public-key cryptography RSA partial key exposure partial hiding iris biometrics
Contact author(s): evoflynn @ maths tcd ie
History: 2005-02-02: revised; 2005-02-01: received; See all versions
Short URL: https://ia.cr/2005/021
License: CC BY

BibTeX

@misc{cryptoeprint:2005/021,
      author = {Eabhnat N\'ı Fhloinn and Michael Purser},
      title = {Partial Hiding in Public-Key Cryptography},
      howpublished = {Cryptology ePrint Archive, Paper 2005/021},
      year = {2005},
      note = {\url{https://eprint.iacr.org/2005/021}},
      url = {https://eprint.iacr.org/2005/021}
}