http://www.cisco.com/c/en/us/support/docs/customer-collaboration/unified-contact-center-enterprise-1101/200288-UCCE-PCCE-Procedure-to-obtain-and-uplo.html http://forums.iis.net/t/1220329.aspx?Create+Certificate+Request+using+SHA256+in+IIS
https://documentation.meraki.com/zGeneral_Administration/Other_Topics/Creating_an_Offline_Certificate_Request_in_Windows_Server