(PowerShell) Find a Certificate by it's SHA-1 Thumbprint

Finds a certificate by it's SHA-1 hex thumbprint. Parts of this example are specific to Windows because it searches the Windows Current User certificate store.

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

$certStore = New-Object Chilkat.CertStore

$thumbprint = "12c1dd8015f3f03f7b1fa619dc24e2493ca8b4b2"

# This part of the example is specific to Windows because it is opening the Windows Current-User certificate store.
$bReadOnly = $true
$success = $certStore.OpenCurrentUserStore($bReadOnly)
if ($success -ne $true) {
    $($certStore.LastErrorText)
    exit
}

# Find the certificate with the desired thumbprint
$cert = $certStore.FindCertBySha1Thumbprint($thumbprint)
if ($certStore.LastMethodSuccess -ne $true) {
    $("Failed to find the certificate.")
    exit
}

$("Found: " + $cert.SubjectCN)

# -------------------------------------------------------------------------------------
# Alternatively, one could load a certificate store object with certs from a PEM file,
# and do the same thing..
$certStorePem = New-Object Chilkat.CertStore

$success = $certStorePem.LoadPemFile("pemFiles/certificates.pem")
if ($success -ne $true) {
    $($certStorePem.LastErrorText)
    exit
}

$cert = $certStorePem.FindCertBySha1Thumbprint($thumbprint)
if ($certStorePem.LastMethodSuccess -ne $true) {
    $("Failed to find the certificate.")
    exit
}

$("Found: " + $cert.SubjectCN)