Certification Authorities

• CAcert.org
• Ten Risks of PKI: What You're not Being Told about Public Key Infrastructure, by Carl Ellison and Bruce Schneier
• X.509 Certificates, Dr. Dobb's Journal, July 1999.
• Tutorial on client authentication using Verisign Digital IDs
• Certificate Authorities: How Valuable Are They? (about CA software and general "Popular Science"-level introduction to CAs)
• UK academic
• ICE TEL
• Implementation Issues for Cryptography
• IPRA root key protection
• RSA certificate issuing system using the BBN SafeKeyper (overview), an example of a Certificate Signing Unit (CSU)
• IBM 4758 cryptographic coprocessor
• Thawte
• PKCS
• Xcert: software for setting up a CA
• Generate bogus X.509 certificates
• Display X.509 certificates
• getStamped: time-stamping service