Guidelines for Derived Personal Identity Verification (PIV) Credentials [December 2014] [open pdf - 821KB]
"This recommendation provides technical guidelines for the implementation of standards - based, secure, reliable, interoperable public key infrastructure (PKI) based identity credentials that are issued by Federal departments and agencies to individuals who possess and prove control over a valid PIV [Personal Identity Verification] Card. The scope of this document includes requirements for initial issuance and maintenance of these credentials, certificate policies and cryptographic specifications, technical specifications for permitted cryptographic token types and the command interfaces for the removable implementations of such cryptographic tokens."
NIST Special Publication: 800-157
National Institute of Standards and Technology: http://www.nist.gov/