function Test-CSPfxCertificate { <# .SYNOPSIS Tests if the given certificate exists in a store. .DESCRIPTION Use this function to ensure if a certificate is already imported into a given store. .PARAMETER Thumbprint Provide one or more thumbprints. .PARAMETER StoreName Select the store name in which you want to search the certificates. .PARAMETER StoreLocation Select between the both available locations CurrentUser odr LocalMachine. .INPUTS [None] .OUTPUTS [bool] .EXAMPLE Test-CSPfxCertificate -Thumbprint '12345678' -StoreName 'My' -StoreLocation 'CurrentUser' .NOTES File Name : Test-CSPfxCertificate.ps1 Author : Marco Blessing - marco.blessing@googlemail.com Requires : .LINK https://github.com/OCram85/PSCredentialStore #> [CmdletBinding()] [OutputType([bool])] param( [Parameter(Mandatory = $true, ValueFromPipeline = $true)] [ValidateNotNullOrEmpty()] [string]$Thumbprint, [Parameter(Mandatory = $false)] [ValidateSet( 'AddressBook', 'AuthRoot', 'CertificateAuthority', 'Disallowed', 'My', 'Root', 'TrustedPeople', 'TrustedPublisher' )] [string]$StoreName = 'My', [Parameter(Mandatory = $false)] [ValidateSet( 'CurrentUser', 'LocalMachine' )] [string]$StoreLocation = 'CurrentUser' ) begin { $Store = [System.Security.Cryptography.X509Certificates.X509Store]::New($StoreName, $StoreLocation) try { $Store.Open('ReadOnly') } catch { $_.Exception.Message | Write-Error -ErrorAction Stop } } process { $Cert = $Store.Certificates | Where-Object { $_.Thumbprint -eq $Thumbprint } if ($null -eq $Cert) { return $false } else { return $true } } end { $Store.Close() } }