Load Certificate from PFX (PKCS#12)

Loads a digital certificate (and private key, if available) from a PFX file.(also known as PKCS#12)

Dim cert As New ChilkatCert

Dim success As Long

'  Load from the PFX file
Dim pfxFilename As String
pfxFilename = "/Users/chilkat/testData/pfx/chilkat_ssl_pwd_is_test.pfx"
Dim pfxPassword As String
pfxPassword = "test"

'  A PFX typically contains certificates in the chain of authentication.
'  The Chilkat cert object will choose the certificate w/
'  private key farthest from the root authority cert.
'  To access all the certificates in a PFX, use the
'  Chilkat certificate store object instead.
success = cert.LoadPfxFile(pfxFilename,pfxPassword)
If (success <> 1) Then
    Text1.Text = Text1.Text & cert.LastErrorText & vbCrLf
    Exit Sub
End If

'  Get some information about the digital certificate,
'  then get the private key...

'  DN = "Distinguished Name"
Text1.Text = Text1.Text & "SubjectDN:" & cert.SubjectDN & vbCrLf

Text1.Text = Text1.Text & "Common Name:" & cert.SubjectCN & vbCrLf
Text1.Text = Text1.Text & "Issuer Common Name:" _
     & cert.IssuerCN & vbCrLf

Text1.Text = Text1.Text & "Serial Number:" & cert.SerialNumber & vbCrLf

'  Now for the private key...
Dim privKey As PrivateKey

Set privKey = cert.ExportPrivateKey()
If (privKey Is Nothing ) Then
    Text1.Text = Text1.Text & cert.LastErrorText & vbCrLf
    Exit Sub
End If

'  The private key object may be used in any Chilkat methods
'  (in other objects/classes) that expect a private key argument.

'  In this case, save the private key to a PKCS8 Encrypted PEM format file:
Dim pemPassword As String
pemPassword = "secret"
Dim pemPath As String
pemPath = "/Users/chilkat/testData/pem/chilkat_privKey.pem"
success = privKey.SavePkcs8EncryptedPemFile(pemPassword,pemPath)
If (success <> 1) Then
    Text1.Text = Text1.Text & privKey.LastErrorText & vbCrLf

    Exit Sub
End If

Text1.Text = Text1.Text & "Private key saved to PKCS8 Encrypted PEM..." & vbCrLf