Architecture and Assessment: Privacy Preserving Biometrically Secured Electronic Documents
Canada Border Services Agency Ottawa, Ontario Canada
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This document explores an application which uses biometrics to secure electronic travel authorizations granted to foreign passport holders wishing to visit Canada. Rather than traditional biometrics, we use privacy enhancing techniques to derive references from the biometrics so that no biometric information must be stored by the application. We describe the architecture and key algorithms for a biometric-enabled electronic Travel Authorityb-TA system in which foreign passport holders obtain electronic credentials which permit entry to Canada. This b-TA can be seen as a privacy preserving biometric version of the Electronic System for Travel Authorization ESTA travel authorization required by US Customs and Border Protection CBP for US Visa-Exempt Countries or Canadas eTA program under Citizenship and Immigration Canada CIC.