Update Invoke-BinarySignature.psm1

Author: Tyler Applebaum

Invoke-BinarySignature.psm1

@@ -2,15 +2,15 @@ Function Get-TimeStampServer {
 [CmdletBinding()]
 Param(
 [Parameter(HelpMessage="List of known good timestamp servers")]
-$TimeStampServers = @("http://ca.signfiles.com/tsa/get.aspx","http://timestamp.globalsign.com/scripts/timstamp.dll")
+$TimeStampServers = @("http://timestamp.globalsign.com/scripts/timstamp.dll","http://ca.signfiles.com/tsa/get.aspx")
 )
 $TimeStampHostnames = $TimeStampServers -Replace("^http:\/\/","") -Replace ("\/.*","") #Isolate hostnames for Test-NetConnection
 $Count = ($TimeStampHostnames.Count - 1)
 For ($i = 0; $i -le $Count; $i++) {
 Try {
 If ([bool](Test-NetConnection $TimeStampHostnames[$i] -Port 80 | Select-Object -ExpandProperty TcpTestSucceeded)) {
 Write-Verbose "$($TimeStampHostnames[$i]) selected"
-$TimeStampServer = $TimeStampServers[$i]
+$script:TimeStampServer = $TimeStampServers[$i]
 Break #Once we find a valid server, stop looking.
 }
 }
@@ -46,6 +46,12 @@ Param(
 $CertFriendlyName = $PSBoundParameters.CodeSigningCertName
 }
 Process {
+Try {
+Get-TimeStampServer
+}
+Catch {
+Write-Error "TimeStampServer could not be reached"
+}
 Write-Verbose $CertFriendlyName
 $CodeSigningCert = Get-ChildItem Cert:\CurrentUser\My | Where-Object FriendlyName -like $CertFriendlyName
 Set-AuthenticodeSignature -Certificate $CodeSigningCert -TimestampServer $TimeStampServer -HashAlgorithm SHA256 -FilePath $BinPath