| 摘要 |
<p>In a method for checking the authenticity of a data medium, in particular a smart card, the encrypted form of a physical feature of the data medium is stored in the data medium. The encrypted form of the feature is transmitted to a terminal, which also measures the physical feature itself. The physical feature is encrypted using a secret key, and is decrypted in the terminal using a public key. Authenticity is confirmed if a comparison of the decrypted feature and the measured feature match. Since the secret key is not contained in either the data medium or the terminal, a high level of security is provided.</p> |
