PowerBuilder

Load a Public Key from a File

Demonstrates the Chilkat PublicKey.LoadFromFile method, which loads a public key from a file. The only argument is the file path. Chilkat examines the file content rather than the extension, accepting binary DER, PEM, Chilkat XML, JWK, and other supported representations.

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: The most convenient loader when a key sits in a file of unknown format — it reads the bytes and detects DER, PEM, XML, or JWK without you having to match a format-specific method. Because it keys off content rather than the filename, a mislabeled extension does not trip it up. This is the pragmatic default for applications that accept public keys from users or varied sources.

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integer li_rc
integer li_Success
oleobject loo_PubKey

li_Success = 0

//  Demonstrates the PublicKey.LoadFromFile method, which loads a public key from a file.  The only
//  argument is the file path.  Chilkat examines the file content (not the extension), accepting
//  binary DER, PEM, Chilkat 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

Write-Debug "Loaded a " + loo_PubKey.KeyType + " public key."


destroy loo_PubKey