(VB.NET) Iterate Keys and Certs in PEM

Demonstrates how to access each of the private keys and certs contained within a PEM.

Note: This example requires Chilkat v11.0.0 or greater.

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Dim success As Boolean = False

' This example assumes the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim pem As New Chilkat.Pem

' Load the PEM from a file.
' If the PEM is encrypted, provide a password.  Otherwise pass an empty string for the password.
Dim password As String = "myPassword"
success = pem.LoadPemFile("../myPemFiles/myPem.pem",password)
If (success = False) Then
    Debug.WriteLine(pem.LastErrorText)
    Exit Sub
End If


' Note: If the app already has the PEM pre-loaded in a string variable, then load it 
' by calling LoadPem instead.  
Dim pemContent As String = "... the PEM contents ..."
success = pem.LoadPem(pemContent,password)
' Check for success as before..

' Iterate over the private keys.
Dim numPrivateKeys As Integer = pem.NumPrivateKeys
Dim i As Integer = 0

Dim privKey As New Chilkat.PrivateKey
While i < numPrivateKeys
    pem.PrivateKeyAt(i,privKey)
    Debug.WriteLine("Private Key " & i & " is " & privKey.BitLength & " in length")
    i = i + 1
End While

' Iterate over the certificates.
Dim cert As New Chilkat.Cert
Dim numCerts As Integer = pem.NumCerts
i = 0
While i < numCerts
    pem.CertAt(i,cert)
    Debug.WriteLine("Certificate " & i & " : " & cert.SubjectDN)
    i = i + 1
End While