Xojo Plugin

Get Certificates from .p12 / .pfx

See more PFX/P12 Examples

A PKCS12 (.p12 / .pfx) is a container for holding a certificate, its private key, and the certs in the chain of authentication up to and possibly including the root CA cert. A .p12 is not required to contain certain things. It will contain whatever the creator of the .p12 decided to include. It's possible to contain just a private key, just a cert, many certs without private keys, or many certs with many private keys. Usually, a .p12 contains one certificate, its associated private key, and certificates in the chain of authentication. Xojo Plugin

Dim success As Boolean
success = False

Dim pfx As New Chilkat.Pfx

success = pfx.LoadPfxFile("qa_data/pfx/test.pfx","pfx_password")
If (success = False) Then
    System.DebugLog(pfx.LastErrorText)
    Return
End If

// Iterate over the certs contained in the PFX
Dim cert As New Chilkat.Cert
Dim numCerts As Int32
numCerts = pfx.NumCerts
Dim i As Int32
i = 0
While i < numCerts

    success = pfx.CertAt(i,cert)

    System.DebugLog("--- " + Str(i) + " ---")
    System.DebugLog(cert.SubjectDN)
    // Is this a root cert, or self-signed?
    System.DebugLog("Root: " + Str(cert.IsRoot))
    System.DebugLog("Self-Signed: " + Str(cert.SelfSigned))

    // If this certificate is not the root (self-signed), then get the issuer.
    // If the issuing certificate is contained in the PFX, then it will be found here..
    If (cert.SelfSigned <> True) Then
        Dim issuer As Chilkat.Cert
        issuer = cert.FindIssuer()
        If (cert.LastMethodSuccess = False) Then
            System.DebugLog("Issuer not found.")
        Else
            System.DebugLog("Issuer: " + issuer.SubjectDN)

        End If

    End If

    i = i + 1
Wend

// Usually, the user certificate is at index 0, its issuer is at index 1, etc. until we get to the root certificate.