Creating a self signed certificate with Powershell and preparing it for IIS

I just wrote an automated routine in Powershell to create a self signed certificate.

#Install-Module -Name 'WebAdministration'

Import-Module -Name WebAdministration

function AddSelfSignedCertificateToSSL([String]$dnsname, [String]$siteName='Default Web Site'){
 $newCert = New-SelfSignedCertificate -DnsName $dnsname -CertStoreLocation Cert:\LocalMachine\My
 $binding = Get-WebBinding -Name $siteName -Protocol "https"
 $binding.AddSslCertificate($newCert.GetCertHashString(), "My")
 $newCertThumbprint = $newCert.Thumbprint
 $sourceCertificate = $('cert:\localmachine\my\' + $newCertThumbprint)
 
 $store = new-object system.security.cryptography.X509Certificates.X509Store -argumentlist "Root", LocalMachine
 $store.Open([System.Security.Cryptography.X509Certificates.OpenFlags]"ReadWrite")
 $store.Add($newCert)
 return $newCertThumbprint
}

Write-Host Installing self-signed certificate Cert:\LocalMachine\My and Cert:\LocalMachine\Root ..

$certinstalledThumbprint = AddSelfSignedCertificateToSSL 'someacmeapp.somedomain.net'

Write-Host Added certificate $certinstalledThumbprint to Cert:\LocalMachine\My and Cert:\LocalMachine\Root and set this up as the SSL certificate on Default Web Site.