Manage user certificates with UE-V?

Question

Is it possible to manage user certificates with UE-V?  I wish to store/manage Personal Certificates with UE-V but can't seem to find information about how to achieve this.  Are Roaming Profiles still needed to have user certificates follow users
or can this be hacked into UE-V.  I tried to create a template which handles the HKCU and User AppData paths which store Certificates but have not been able to get this to work.
Windows 7/Windows 8 Server 2008R2/Server2012
Any insight would be appreciated.
Thanks,
Mark Ringo

Answer 1

Hi Mark
Certificates are currently not supported with UE-V 1.0 / 1.0 SP1. Just saving HKCU keys and the RSA / System Certificate files in APPDATA does not work any more since Windows Vista. You have to use a logon / logoff script which does the trick via Microsoft
CryptoAPI (Export / Import).
I have included exampled with Powershell below.
Cheers
Michael
ExportCert.ps1
# Scriptname: ExportCert.ps1
# Author: Michael Rüefli
# Purpose: Export certificates local certificate store (Machine or User) to a PKCS12 file format
# Version: 1.0.1
# Fixed Issues / Changes:
# V 1.0.1 / Fixed Export where no filter has been specified. Changed the autogenerated password strenght
function ConvertToSid([STRING]$NtAccount)
$result = (New-Object system.security.principal.NtAccount($NTaccount)).translate([system.security.principal.securityidentifier])
return $result.value
#Get the Arguments
$exportpath = $args[0]
$certstore = $args[1]
$issuer_filter = $args[2]
#Check the Args
If ($args.count -lt 2)
Write-host "Too less arguments! Usage: ExportCert.ps1 <exportpath> <certstore> [<filter> optional>" -ForegroundColor red
write-host "Example: Powershell.exe ExportCert.ps1 H:\Certs CurrentUser DC=LOC" -ForegroundColor blue
exit
#Error Handler
Trap [Exception]{continue}
#Check Exportpath, if not there create it
If ((Test-Path -Path $exportpath) -ne $True)
New-Item -Path $exportpath -ItemType Directory
#Get certificates in store
If ($issuer_filter)
$HKCUCerts = (dir cert:\$certstore\My | ? { $_.Issuer -notmatch $issuer_filter})
Else
$HKCUCerts = (dir cert:\$certstore\My)
#process each certificate
Foreach ($cert in $HKCUCerts)
$friendlyname = $cert.FriendlyName
$type = [System.Security.Cryptography.X509Certificates.X509ContentType]::pfx
$username = $env:USERNAME
$sid = ConvertToSid $username
$pass = 'Letmein$$Cert2012'
$pass_secure = ConvertTo-SecureString -AsPlainText $pass -Force
$bytes = $cert.export($type, $pass)
[System.IO.File]::WriteAllBytes("$exportpath\$friendlyname.pfx", $bytes)
ImportCert.ps1
# Scriptname: ImportCert.ps1
# Author: Michael Rüefli
# Purpose: Import PKCS12 certificates from a file share into local certificate store (Machine or User)
# Version: 1.0
# Fixed Issues / Changes:
# V 1.0.1 / Changed the autogenerated password strenght
function ConvertToSid([STRING]$NtAccount)
$result = (New-Object system.security.principal.NtAccount($NTaccount)).translate([system.security.principal.securityidentifier])
return $result.value
#Get the Arguments
$importpath = $args[0]
$certstore = $args[1]
#Check the Args
If ($args.count -lt 2)
write-host "Too less arguments! Usage: ImportCert.ps1 <importpath> <certstore>" -ForegroundColor red
write-host "Example: Powershell.exe ImportCert.ps1 H:\Certs CurrentUser" -ForegroundColor blue
exit
#Error Handler
Trap [Exception]{continue}
function Import-PfxCertificate
param([String]$certPath,[String]$certRootStore,[String]$certStore,$pfxPass = $null,[String]$KeySet)
#Error Handler
Trap [Exception]{continue}
if ($args[0] -eq "-h")
Write-Host "usage: Import-509Certificate <Filename>,<certstore>,<cert root>,<keyset> `n `
Valid certstores: LocalMachine,CurrentUser `n `
Valid cert root: My,AuthRoot,TrustedPublisher `n `
Valid Keysets: MachineKeySet,UserKeySet"
break
write-host "Importing Certificate: $certPath"
$pfx = new-object System.Security.Cryptography.X509Certificates.X509Certificate2
if ($pfxPass -eq $null) {$pfxPass = read-host "Enter the pfx password" -assecurestring}
$pfx.import($certPath,$pfxPass,"MachineKeySet,Exportable,PersistKeySet")
$store = new-object System.Security.Cryptography.X509Certificates.X509Store($certStore,$certRootStore)
$store.open("MaxAllowed")
$store.add($pfx)
$store.close()
$username = $env:USERNAME
$certs = Get-ChildItem $importpath -Filter "*.pfx"
Foreach ($item in $certs)
$item
$friendlypath = $item.FullName
$friendlyname = ($item.Name).replace(".pfx","")
$sid = ConvertToSid $username
"$friendlyname-$username"
$pass = 'Letmein$$Cert2012'
$pass_secure = ConvertTo-SecureString -AsPlainText $pass -Force
Import-PfxCertificate "$friendlypath" "$certstore" "My" $pass_secure