Paper 2001/039

Robust Software Tokens: Towards Securing a Digital Identity

Taekyoung Kwon

Abstract

This paper presents a new method called the robust software token for providing users with a stable and portable container in which a private key is stored and kept from adversaries, by simple software-only techniques. The proposed scheme is comparable with the related noble work such as a cryptographic camouflage scheme and a networked cryptographic device, but equipped with several advantages; (1) it uniquely supports both closed and open domains on public key infrastructures, (2) it supports more protocol setup, (3) and it is more efficient than the others. This paper handles the new RSA-based scheme only. The DSA-based scheme sharing the basic idea can be found in our previous work.

Note: We corrected and rearranged the proposed protocols. Also we clarified their propery. Explicit comparisons with the related noble approaches have been added.