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B4X

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.

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B4X
Dim success As Boolean = False

Dim pfx As ChilkatPfx
pfx.Initialize

'  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 ChilkatPrivateKey
privKey.Initialize("privKey")
success = privKey.LoadPemFile("qa_data/private_key.pem")
If success = False Then
    Log(privKey.LastErrorText)
    Return
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 ChilkatCert
cert.Initialize("cert")
success = cert.LoadFromFile("qa_data/cert.pem")
If success = False Then
    Log(cert.LastErrorText)
    Return
End If


Dim chain As ChilkatCertChain
chain.Initialize
success = cert.BuildCertChain(chain)
If success = False Then
    Log(cert.LastErrorText)
    Return
End If


'  Add the private key and its certificate chain to the PFX.
success = pfx.AddPrivateKey(privKey, chain)
If success = False Then
    Log(pfx.LastErrorText)
    Return
End If

Log("Private key and certificate chain added to the PFX.")