Tag Info

Hot answers tagged

1

The method you propose is actually what is used by some IC card formats including Sony's FeliCa: FeliCa's encryption key is dynamically generated each time mutual authentication is performed, preventing fraud such as impersonation. (From Wikipedia) This could be implemented simply by hashing the card ID (or other unique data) and the last system ...



Only top voted, non community-wiki answers of a minimum length are eligible