Visual Basic 6.0

Convert DSA PEM Private Key to DER

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Converts a DSA private key from PEM format to DER. The first part of the example will convert an unencrypted PEM to DER, then 2nd part will convert an encrypted PEM to unencrypted DER. Visual Basic 6.0

Dim success As Long
success = 0

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

Dim dsa As New ChilkatDsa

' Load a PEM private key.
Dim pemPrivateKey As String
pemPrivateKey = dsa.LoadText("dsa_priv.pem")
' Import the unencrypted PEM into the DSA object.
success = dsa.FromPem(pemPrivateKey)
If (success <> 1) Then
    Debug.Print dsa.LastErrorText
    Exit Sub
End If

' Write it out as a DER file:
success = dsa.ToDerFile("dsa_priv.der")
If (success <> 1) Then
    Debug.Print dsa.LastErrorText
    Exit Sub
End If

' Load an encrypted PEM private key.
pemPrivateKey = dsa.LoadText("dsa_privEncrypted.pem")
' Import the encrypted PEM into the DSA object.
success = dsa.FromEncryptedPem("myPassword",pemPrivateKey)
If (success <> 1) Then
    Debug.Print dsa.LastErrorText
    Exit Sub
End If

' Write it out as an unencrypted DER file:
success = dsa.ToDerFile("dsa_priv2.der")
If (success <> 1) Then
    Debug.Print dsa.LastErrorText
    Exit Sub
End If

Debug.Print "Finished!"