(Visual Basic 6.0) Find a Certificate by it's SHA-1 Thumbprint

See more Cert Store Examples

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

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Dim certStore As New ChilkatCertStore

Dim thumbprint As String
thumbprint = "12c1dd8015f3f03f7b1fa619dc24e2493ca8b4b2"

' This opens the Current User certificate store on Windows,
' On MacOS and iOS it opens the default Keychain.
Dim bReadOnly As Long
bReadOnly = 1
Dim success As Long
success = certStore.OpenCurrentUserStore(bReadOnly)
If (success = 0) Then
    Debug.Print certStore.LastErrorText
    Exit Sub
End If

' Find the certificate having a specific SHA1 thumbprint.
Dim json As New ChilkatJsonObject
success = json.UpdateString("thumbprint",thumbprint)

Dim cert As New ChilkatCert
success = certStore.FindCert(json,cert)
If (success = 0) Then
    Debug.Print "Failed to find the certificate."
    Exit Sub
End If

Debug.Print "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 ChilkatCertStore

success = certStorePem.LoadPemFile("pemFiles/certificates.pem")
If (success = 0) Then
    Debug.Print certStorePem.LastErrorText
    Exit Sub
End If

success = certStore.FindCert(json,cert)
If (success = 0) Then
    Debug.Print "Failed to find the certificate."
    Exit Sub
End If

Debug.Print "Found: " & cert.SubjectCN