An Internet AttributeCertificate Profile for Authorization - This PKIX draft defines two profiles for the use of X.509 AttributeCertificates to provide authorization support for protocols like TLS, CMS and their consumers, and others. www.imc.org/draft-ietf-pkix-ac509prof
Digital Certificates - A brief overview of digital certificate with links to related resources, particularly its support in Microsoft products. (Microsoft) www.microsoft.com/security/tech/certificates/default.asp