(VB.NET) Find a Certificate by it's SHA-1 Thumbprint

See more Cert Store Examples

Note: This example requires Chilkat v10.1.2 or later.

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Dim certStore As New Chilkat.CertStore

Dim thumbprint As String = "12c1dd8015f3f03f7b1fa619dc24e2493ca8b4b2"

' This opens the Current User certificate store on Windows,
' On MacOS and iOS it opens the default Keychain.
Dim bReadOnly As Boolean = True
Dim success As Boolean = certStore.OpenCurrentUserStore(bReadOnly)
If (success = False) Then
    Debug.WriteLine(certStore.LastErrorText)
    Exit Sub
End If


' Find the certificate having a specific SHA1 thumbprint.
Dim json As New Chilkat.JsonObject
json.UpdateString("thumbprint",thumbprint)

Dim cert As New Chilkat.Cert
success = certStore.FindCert(json,cert)
If (success = False) Then
    Debug.WriteLine("Failed to find the certificate.")
    Exit Sub
End If


Debug.WriteLine("Found: " & cert.SubjectCN)


' -------------------------------------------------------------------------------------
' Alternatively, one could load a certificate store object with certs from a PEM file,
' and do the same thing..
Dim certStorePem As New Chilkat.CertStore

success = certStorePem.LoadPemFile("pemFiles/certificates.pem")
If (success = False) Then
    Debug.WriteLine(certStorePem.LastErrorText)
    Exit Sub
End If


success = certStore.FindCert(json,cert)
If (success = False) Then
    Debug.WriteLine("Failed to find the certificate.")
    Exit Sub
End If


Debug.WriteLine("Found: " & cert.SubjectCN)