A Key Management Algorithm Based on Fingerprint and Fuzzy Decision

Abstract

This paper presents an algorithm about key management including key generation and key recovery in cryptosystem based on fingerprint and fuzzy decision. Traditional key for the encryption and decryption is remembered by a trusted person, or stored in a safety location. The key may be lost or misused for the person’s self-ish desire. Sharing secret algorithm is used to prevent from misusing in a single management, and fuzzy vault scheme is used to avoid the disadvantage of numerical password. But the proposed method is not an easy combination of fuzzy vault and sharing secret. To keep from the collusion among some persons, a simple fuzzy decision is added in the proposed method. Security analysis and experimental results are given to show the proposed algorithm is feasible and safe for key management in cryptosystem.