Sample code for 30+ languages & platforms
Visual Basic 6.0

Add a Private Key and Certificate Chain to a PFX

See more PFX/P12 Examples

Demonstrates Pfx.AddPrivateKey, which adds a private key together with its certificate chain to the PFX object.

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. The chain must contain at least one certificate; the certificate at index 0 is treated as the leaf. The chain is built here with Cert.BuildCertChain.

Chilkat Visual Basic 6.0 Downloads

Visual Basic 6.0
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.
'  Load the private key.
Dim privKey As New PrivateKey
success = privKey.LoadPemFile("qa_data/private_key.pem")
If (success = 0) Then
    Debug.Print privKey.LastErrorText
    Exit Sub
End If

'  Load the certificate and build its chain of authority.  The chain must contain at least one
'  certificate; the certificate at index 0 is treated as the leaf.
Dim cert As New ChilkatCert
success = cert.LoadFromFile("qa_data/cert.pem")
If (success = 0) Then
    Debug.Print cert.LastErrorText
    Exit Sub
End If

Dim chain As New ChilkatCertChain
success = cert.BuildCertChain(chain)
If (success = 0) Then
    Debug.Print cert.LastErrorText
    Exit Sub
End If

'  Add the private key and its certificate chain to the PFX.
success = pfx.AddPrivateKey(privKey,chain)
If (success = 0) Then
    Debug.Print pfx.LastErrorText
    Exit Sub
End If

Debug.Print "Private key and certificate chain added to the PFX."