(Visual Basic 6.0) Iterate Keys and Certs in PEM

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

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

' Starting in v9.5.0.49, all Chilkat classes can be unlocked at once at the beginning of a program
' by calling UnlockBundle.  It requires a Bundle unlock code.
Dim chilkatGlob As New ChilkatGlobal
Dim success As Long
success = chilkatGlob.UnlockBundle("Anything for 30-day trial.")
If (success <> 1) Then
    Debug.Print chilkatGlob.LastErrorText
    Exit Sub
End If

' The Chilkat PEM class was introduced in v9.5.0.49.  
' It requires the bundle to be unlocked, as shown above.
Dim pem As New ChilkatPem

' 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
password = "myPassword"
success = pem.LoadPemFile("../myPemFiles/myPem.pem",password)
If (success <> 1) Then
    Debug.Print 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
pemContent = "... the PEM contents ..."
success = pem.LoadPem(pemContent,password)
' Check for success as before..

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

Do While i < numPrivateKeys

    Dim privKey As PrivateKey
    Set privKey = pem.GetPrivateKey(i)
    Debug.Print "Private Key " & i & " is " & privKey.BitLength & " in length"

    i = i + 1
Loop

' Iterate over the certificates.
Dim numCerts As Long
numCerts = pem.NumCerts
i = 0

Do While i < numCerts

    Dim cert As ChilkatCert
    Set cert = pem.GetCert(i)
    Debug.Print "Certificate " & i & " : " & cert.SubjectDN

    i = i + 1
Loop