VB.NET

Read a PFX Safe-Bag Attribute

Demonstrates Pfx.GetSafeBagAttr, which reads a recognized safe-bag attribute from a private key or certificate inside 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.

Background. A safe-bag attribute is metadata attached to an item inside a PKCS#12/PFX container; it does not change the certificate or private-key material. Recognized attributes include friendlyName, keyContainerName, keyName, and localKeyId.

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Dim success As Boolean = False

Dim pfx As New Chilkat.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.
'  The PFX password should come from a secure source rather than being hard-coded.
Dim password As String = "myPfxPassword"
success = pfx.LoadPfxFile("qa_data/identity.pfx",password)
If (success = False) Then
    Debug.WriteLine(pfx.LastErrorText)
    Exit Sub
End If


'  Read a recognized safe-bag attribute from an item inside the PFX.  The 1st argument is True for a
'  private key or False for a certificate, and the 2nd is the zero-based index within that
'  collection.
Dim bForPrivateKey As Boolean = True
Dim friendlyName As String = pfx.GetSafeBagAttr(bForPrivateKey,0,"friendlyName")
If (pfx.LastMethodSuccess = False) Then
    Debug.WriteLine(pfx.LastErrorText)
    Exit Sub
End If

Debug.WriteLine("friendlyName: " & friendlyName)