SYSTEMS FOR DISTRIBUTED SECURE STORAGE OF PERSONAL DATA, IN PARTICULAR BIOMETRIC IMPRESSIONS, AND SYSTEM, LOCAL DEVICE, AND METHOD FOR MONITORING IDENTITY

摘要

The present invention relates to a system for distributed secure storage of personal, in particular biometric, data. The invention also relates to a secure identity-monitoring system and to a local monitoring device. The invention finally relates to a secure identity-monitoring method. The personal data, in particular biometric impressions, for the persons are pre-stored in a central base, and the monitoring procedure comprises: a preliminary step of forming a base of derived data obtained from source personal data by means of a derivation function; a step (31) of acquiring data from the person; a step (32) of applying the derivation function to said acquired data; and a step (33) of comparing the result of the derivation function with the set of data derived from the base. The invention is of use in, for example, decentralized systems for biometric verification while ensuring the confidentiality of the personal data.