This tutorial is written using the 'Paper Latern' theme as a Reseller/root user, so your front end of cPanel may differ slightly, however the basics should be the same. This tutorial also assumes that you've already generated a CSR and have received the signed SSL Certificate from your SSL Certificate Authority. ( Read How to Generate a CSR with cPanel )
You should receive an email/link providing your signed SSL Certificate from the signing authority. Typically the email will provide a text copy or a .zip including files that can be opened with any text editor to see formatted text similar to this:
-----BEGIN CERTIFICATE----- MIIDIzCCAgugAwIBAgIFAOUYN94wDQYJKoZIhvcNAQEFBQAwKjEOMAwGA1UEAwwF a2Iua2gxGDAWBgkqhkiG9w0BCQEWCXNzbEBrYi5raDAeFw0xNDA5MTIyMjU3MjJa Fw0xNTA5MTIyMjU3MjJaMCoxDjAMBgNVBAMMBWtiLmtoMRgwFgYJKoZIhvcNAQkB Fglzc2xAa2Iua2gwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDgvNH9 VodIT7oR1luOgdhw6kKzS/x4IOK7ITS9Hwv9yFl/ImjpjbGBPkqK5fJTCsN/4Z0j [...four lines truncated...] +bI2aTAfBgNVHSMEGDAWgBRvcczvcrGDvt14+9zB/I0M+bI2aTAMBgNVHRMEBTAD AQH/MA0GCSqGSIb3DQEBBQUAA4IBAQBnDGqWn/a+/qpBzCbFW/868f3x3P17mBdZ OSrW/KG9FeRYAAvY1LO3IoEVVQEzfsdduR5Xxk+cChyeaQoYzJ3glIUvVXivEjxx 9x3DjvZjnWKVRc/TK2FFdTCAF301IikGo2orbFJOeRQeoMnNbd/jVUJNmS6C0uT9 A45ZxkFP8C+Nb8vNqxaDBrufHfcBrFM0aRxkDOQn3SuJEKM46etrNY+6ionWMPQc KErTL8A+9Ie+PtH2XpJeh2kOsZ3fdYnkHgLMvp7JVeNw3qoHdsLk/HrNZ1B29u2e RTDbJnKKxHW6NBJJn4oLkzGfy9WtP3Jt0p7A6SPg3PCZvwefBXbM -----END CERTIFICATE-----
This is the signed SSL Certificate that you'll use for installing.
That was easy, eh?
Other related articles:
How can I force my website(s) to use HTTPS/SSL? (coming soon)