PowerBuilder

Export a Public Key DER as Encoded Text

Demonstrates the Chilkat PublicKey.GetEncoded method, which returns the DER representation encoded as text. The first argument selects the DER representation (as for GetPem) and the second names the binary encoding, such as base64 or hex.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This returns the raw DER bytes as an encoded string, so the key can travel through a text-only medium without the BEGIN/END armor of PEM. Choosing base64 versus hex is simply a matter of what the consumer expects, and the first argument selects the same DER structures as GetPem.

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integer li_rc
integer li_Success
oleobject loo_PubKey
integer li_PreferPkcs1
string ls_Encoded

li_Success = 0

//  Load a public key to export.  LoadFromFile inspects the content, so it accepts DER, PEM, XML,
//  JWK, and other supported representations.
loo_PubKey = create oleobject
li_rc = loo_PubKey.ConnectToNewObject("Chilkat.PublicKey")
if li_rc < 0 then
    destroy loo_PubKey
    MessageBox("Error","Connecting to COM object failed")
    return
end if
li_Success = loo_PubKey.LoadFromFile("qa_data/public.pem")
if li_Success = 0 then
    Write-Debug loo_PubKey.LastErrorText
    destroy loo_PubKey
    return
end if

//  Export the DER as text.  The 1st argument selects the DER representation (as for GetPem) and
//  the 2nd names the binary encoding, such as "base64" or "hex".
li_PreferPkcs1 = 0
ls_Encoded = loo_PubKey.GetEncoded(li_PreferPkcs1,"base64")
if loo_PubKey.LastMethodSuccess = 0 then
    Write-Debug loo_PubKey.LastErrorText
    destroy loo_PubKey
    return
end if

Write-Debug ls_Encoded


destroy loo_PubKey