Creates a signed certificate from a CSR.
function SignCSR(CSR: TBytes; SerialNumber: Integer): String;
This method will create a signed certificate from a Certificate Signing Request (CSR). CSR specifies the Certificate Signing Request to be signed.
SerialNumber specifies the certificate serial number. All certificates signed by the same issuer must have different (unique) serial numbers.
NOTE: This functionality is only available in Windows.