(Visual Basic 6.0) X509Certificate GetCertHash SHA256

See more Certificates Examples

Shows how to get the SHA256 hash of a certificate.

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

Dim cert As New ChilkatCert

Dim success As Long

' Load a certificate object with a certificate.
' The certificate object could have come from any source,
' or perhaps was obtained from another Chilkat function.
' The source does not matter.  What matters is that we have
' a cert object loaded with the certificate..
success = cert.LoadFromFile("qa_data/certs/cert_test123.cer")
If (success <> 1) Then
    Debug.Print cert.LastErrorText
    Exit Sub
End If

' Get the binary DER of the certificae, and compute the SHA256 hash:
Dim bdDer As New ChilkatBinData
success = cert.ExportCertDerBd(bdDer)

' Get the base64 representation of the SHA256 hash.
Dim certHash As String
certHash = bdDer.GetHash("sha256","base64")

Debug.Print "Certificate hash in base64 = " & certHash