If the Microsoft Authenticode or Microsoft Organizational certificate has been ordered and installed on a PC that runs Windows Vista, Windows 7, or Windows 8, the certificate will be installed directly into the certificate store in Internet Explorer. Under certain circumstances, some signing software might still require the certificate to be in two separate files: the .pvk (private key) and .spc (the public key) files.
To convert a browser installed Microsoft Authenticode or a Microsoft Organizational certificate to separate .PVK and .SPC files, please follow one of the methods below.
Step 1: Export the certificate from Internet Explorer into a .pfx file
A file named authenticode.pfx will be created.
Step 2: Convert the .pfx file to separate .pvk and .spc files
This will generate the myprivatekey.pvk and mycredentials.spc files automatically.