In 1999 the PKI forum formed a group called OASIS to foster standard-based interoperable PKI solutions for e-business. The group is sponsored by several technology and banking companies. For more information, the reader is referred to the PKI forum and OASIS websites:
We did mention many of the new IETF PKI specifications in brief, sometimes by only providing their RFC numbering. The reader is referred to the IETF PKIX working group website for more information and the actual specifications:
For more information as well as the current status on profiling of PKI for IPsec and IKE, the reader is referred to the pki4ipsec working group website [PKI4IPSECWEB].
For more information on government recommendations on using public keys for authentication, the reader is referred to [FIPS196].