CA:Certificate Authority CEP:Certificate Enrollment Protocol CMS:Certificate Management System CRL:Certificate Revocation List CRMF:Certificate Request Message Format CUID:Card Unique ID DCS:Dogtag Certificate System DES:Digital Encryption Standard DRM:Data Recovery Manager ESC:Enterprise Security Client FDS:Fedora Directory Server KEK:Key Encryption Key MAC:Message Authentication Code OCSP:Online Certificate Status Protocol PKI:Public Key Infrastructure PKIX:Public Key Infrastructure (X509) RA:Registration Authority RFC:Request For Comment SCEP:Simple Certificate Enrollment Protocol TKS:Token Key Service TPS:Token Processing System VGI:Virtual Graphics Interface X.509:Standard for Public-Key Infrastructure