Generation and validation of derived credentials

1. A method of enabling a user of a CAC/PIV (Common Access Card or Personal Identity Verification) card to obtain access to a secure resource from a computing device that lacks a CAC/PIV card reader, the method comprising, by execution of program code by a server system:

receiving, over a network, a CAC/PIV certificate from a first computing device associated with the user, the CAC/PIV certificate read from the CAC/PIV card by a CAC/PIV card reader of the first computing device;

validating the received CAC/PIV certificate;

generating a derived credential that corresponds to, and is derived using, the received CAC/PIV certificate, the derived credential being distinct from the received CAC/PIV certificate;

sending a passcode to the first computing device for entry by the user on a second computing device, the passcode being one or both of (a) a one-time-use passcode that is valid only for a single use, and (b) a time limited passcode that is valid for a limited time period;

receiving the passcode from the second computing device;

validating the received passcode, wherein validating the received passcode comprises one or both of: determining whether the received passcode has been used, and determining whether the received passcode has expired; and

after validating the received passcode, transmitting the derived credential to the second computing device associated with the user, said second computing device lacking a CAC/PIV card reader;

wherein the derived credential enables the user to access, from the second computing device, a secure network resource that is accessible from the first computing device using the CAC/PIV card.

2. The method of claim 1 , wherein the derived credential is an X.509 certificate.

3. The method of claim 1 , wherein the derived credential is an X.509 certificate mapped to a HSPD-12 (Homeland Security Presidential Directive 12) identity.

4. The method of claim 1 , wherein the derived credential comprises a public/private key pair.

5. The method of claim 1 , further comprising receiving the derived credential from the second computing device, validating the derived credential received from the second computing device, and at least partly in response to validating the derived credential, providing to the second computing device access data that enables the second computing device to access the secure network resource.

6. The method of claim 5 , wherein validating the derived credential comprises comparing attributes of the derived credential to attributes of the CAC/PIV certificate.

7. The method of claim 1 , wherein the derived credential has an expiration attribute that matches an expiration attribute of the CAC/PIV certificate.

8. The method of claim 1 , wherein the derived credential has a name that matches a name of the CAC/PIV certificate.

9. A method of enabling a user of a smart card that stores a certificate to obtain access to a secure resource from a computing device that lacks a smart card reader capable of reading the smart card, the method comprising, by execution of program code by a server system:

receiving, over a network, the certificate from a first computing device associated with the user, the certificate read from the smart card by a smart card reader of the first computing device;

validating the received certificate, wherein validating the received certificate comprises validating the received certificate against a certificate chain, expiration date and revocation list, and comprises validating a common name of the received certificate;

generating a derived credential that corresponds to, and is derived using, the received certificate, the derived credential being distinct from the received certificate;

sending a passcode to the first computing device for entry on a second computing device associated with the user, the passcode being one or both of (a) a one-time-use passcode that is valid only for a single use, and (b) a time limited passcode that is valid for a limited time period;

receiving the passcode from the second computing device;

validating the received passcode, wherein validating the received passcode comprises one or both of: determining whether the received passcode has been used, and determining whether the received passcode has expired; and

after validating the received passcode, transmitting the derived credential to the second computing device, said second computing device lacking a smart card reader capable of reading the smart card;

wherein the derived credential enables the user to access, from the second computing device, a secure network resource that is accessible from the first computing device using the smart card.

10. The method of claim 9 , wherein the smart card is a Common Access Card (CAC) smart card.

11. The method of claim 9 , wherein the smart card is a Personal Identity Verification (PIV) smart card.

12. The method of claim 9 , wherein the certificate is a X.509 certificate.

13. The method of claim 9 , further comprising receiving the derived credential from the second computing device, validating the derived credential received from the second computing device, and at least partly in response to validating the derived credential, providing to the second computing device access data that enables the second computing device to access the secure network resource.

14. The method of claim 13 , wherein validating the derived credential comprises comparing attributes of the derived credential to attributes of the certificate.

15. The method of claim 9 , wherein the derived credential has an expiration attribute that matches an expiration attribute of the certificate.

16. The method of claim 9 , wherein the derived credential has a name that matches a name of the certificate.