he set of NIST Test PIV Cards contains sixteen smart cards that are loaded with a PIV Card Application, as specified in NIST Special Publication 800-73-4. The PIV Card Applications on the smart cards are loaded with test data and keys that are similar to what might appear on actual PIV Cards, with the exception that the certificates on the test PIV Cards were issued from a test public key infrastructure. The currently available set of test PIV cards, version 2, includes examples of new, optional features that were introduced in SP 800-73-4, such as on-card biometric comparison, secure messaging, and the virtual contact interface. The set of test cards includes not only examples that are similar to cards issued today, but also examples of cards with features that are expected to appear in cards that will be issued in the future. For example, while the certificates and data objects on most, if not all, cards issued today are signed using RSA PKCS #1 v1.5, the set of test cards include examples of certificates and data objects that are signed using each of the algorithms and key sizes listed in Table 3-2 of Special Publication 800-78-4, including RSASSA-PSS and ECDSA. Similarly, the infrastructure supporting the test cards provides examples of CRLs and OCSP responses that are signed using each of these signature algorithms. The set of test cards also includes certificates with elliptic curve subject public keys in addition to RSA subject public keys, as is permitted by Table 3-1 of Special Publication 800-78-4. The set of test cards, collectively, also include all of the mandatory and optional data objects listed in Section 3 of SP 800-73-4 Part 1, except for Cardholder Iris Images. Several of the cards include a Key History object along with retired key management keys.