Enumerate Private Keys in a PFX

See more PFX/P12 Examples

Demonstrates Pfx.PrivateKeyAt, which copies the private key at a zero-based index into a PrivateKey object. The example enumerates all private keys in the PFX.

The file path is relative to the application's current working directory. An absolute path may also be used. Supply the path appropriate to your own environment.

Dim success As Long
success = 0

Dim pfx As New ChilkatPfx

'  The file path is relative to the application's current working directory.  An absolute path
'  may also be used.  Supply the path appropriate to your own environment.
'  The PFX password should come from a secure source rather than being hard-coded.
Dim password As String
password = "myPfxPassword"
success = pfx.LoadPfxFile("qa_data/identity.pfx",password)
If (success = 0) Then
    Debug.Print pfx.LastErrorText
    Exit Sub
End If

'  Enumerate the private keys in the PFX by zero-based index.  Valid indexes are less than
'  NumPrivateKeys.
Dim numKeys As Long
numKeys = pfx.NumPrivateKeys
Dim privKey As New PrivateKey
Dim i As Long
For i = 0 To numKeys - 1
    success = pfx.PrivateKeyAt(i,privKey)
    If (success = 0) Then
        Debug.Print pfx.LastErrorText
        Exit Sub
    End If

    Debug.Print "Private key " & i & ": " & privKey.KeyType & " (" & privKey.BitLength & " bits)"
Next