The Public Key Infrastructure at the University of Western Ontario currently uses 2 Certificate Authorities to provide secure communications for its community. The primary use of the infrastructure is to provide secure web services using the Transport Layer Security (TLS) and its predecessor, Secure Sockets Layer (SSL), both of which are frequently referred to as 'SSL'. They are cryptographic protocols that provide communications security over a computer network It is also used to for ldap, mail and code signing
The first Certificate Authority UWO uses is a local authority maintained by ITS. Certificates signed by this authority can be used to setup secure web services which are used by small groups of local user.
The second Certificate Authority UWO uses is Thawte Certifications, which has a world wide presence and is predefined into most common web browsers. Certificates signed by this authority can be used to setup secure services which are available to the greater population of the University or the entire world.
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