User`s guide

®
USER’S GUIDE AUTOMATIC TRANSFER SWITCH
136
Create a Root Certificate & Server Certificates
Summary
Use this procedure if your company or agency does not have its own
Certificate Authority and you do not want to use a commercial
Certificate Authority to sign your server certificates.
• Create a CA root certificate that will be used to sign all server
certificates to be used with Automatic Transfer Switchs. During this
task, two files are created.
– The file with the .p15 extension is an encrypted file which contains
the Certificate Authority’s private key and public root certificate. This
file signs the server certificates.
– The file with the .crt extension, which contains only the Certificate
Authority’s public root certificate. You load this file into each Web
browser that will be used to access the Automatic Transfer Switch
so that the browser can validate the server certificate of the
Automatic Transfer Switch.
• Create a server certificate, which is stored in a file with a .p15
extension. During this task, you are prompted for the CA root certificate
that signs the server certificate.
• Load the server certificate onto the Automatic Transfer Switch.
• For each Automatic Transfer Switch that requires a server certificate,
repeat the tasks that create and load the server certificate.
The public RSA key that is part of a certificate generated by the
APC Security Wizard is 1024 bits. (The default key generated by
the Automatic Transfer Switch, if you do not use the Wizard, is 768
bits.)