Method for carrying out a secure electronic transaction using a portable data support

  • US 8,205,249 B2
  • Filed: 10/23/2003
  • Issued: 06/19/2012
  • Est. Priority Date: 10/24/2002
  • Status: Active Grant
First Claim
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1. A method for effecting a secure electronic transaction on a terminal using a portable data carrier arranged to perform different quality user authentication methods, wherein the portable data carrier performs a user authentication using one of said different user authentication methods, the portable data carrier confirms the proof of authentication to the terminal, and the portable data carrier then performs a security-establishing operation within the electronic transaction, comprising the steps of creating authentication quality information by the portable data carrier about said user authentication method used and attaching said authentication quality information to the result of the security-establishing operation, wherein the difference in quality of said user authentication methods varies between an inherently relatively lower quality and an inherently relatively higher quality from a security perspective.

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