How can identification credentials be verified for integrity and validity?
Verifying the integrity and validity of a credential is essential to ensure that the credential is authentic, has not been tampered with, and is still authorized to be used for identification. Techniques that may be used include: • Using symmetric shared secret keys or asymmetric public/private keys with a challenge/response communication with the reader to authenticate the validity of the credential. • Employing cryptographic techniques such as digital signatures to verify that the information stored on the credential is from a valid issuer. • Checking the credential status in real-time (e.g., a credential’s public key certificate) to verify that the credential has not been revoked. • Verifying that the credential’s physical security features (e.g., micro printing, rainbow printing, optically variable device, specialty inks) are valid. • Verifying that the data stored on the identity credential is the same as the information printed on the credential.
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