An application that transparently implements z/OS System SSL in the TCP layer of the TCP/IP stack.

An organization that issues certificates and vouches for the identities of the subjects of the certificates.

A series of certificates, which includes a personal certificate, the certificate for the root authority, and any intermediate certificate authorities.

A U.S. government computer security standard used to accredit cryptographic modules.

An open source implementation of the SSL and TLS protocols for Linux, UNIX, and Windows types of operating systems.

A public key certificate that identifies a subject and the subject's public key. The certificate is digitally signed by a CA. On a PowerExchange network, each SSL client and server must have a personal certificate installed.

Master certificate authority, the highest level in a hierarchy of certificate authorities.

A cryptographic protocol that provides security for communications over networks. Predecessor of the TLS protocol.

A certificate that is signed by its own creator.

A certificate that can be used to sign other certificates and functions as a CA certificate in a RACF environment.

z/OS implementation of the SSL and TLS protocols.

A cryptographic protocol that provides security for communications over networks. TLS is the successor to the Internet Engineering Task Force (IETF) standard version of the SSL protocol.

An ITU-T standard for a public key infrstructure. X.509 specifies standard formats for public key certificates.