This library has a small set of PIV peculiar extensions to a standard x.509 Certificate. This will parse out Subject Alternative Names common to PIV Certificates, as well as any custom Extensions.
This is to be used in conjunction with a crypto/x509.Certificate, and the
piv.Certificate embeds an crypto/x509.Certificate as an anonymous
member.
PIV Cards are cards defined by FIPS 201, a Federal US Government standard defining the ID cards employees use. At its core, it's a set of x509 Certificates and corresponding private keys in a configuration that is standardized across implementations.
For more details on how PIV Tokens can be used, the FICAM (Federal Identity, Credential, and Access Management) team at GSA (General Services Administration) has published some guides on GitHub under GSA/piv-guides