VBScript

Load a Private Key from XML Text

Demonstrates the Chilkat PrivateKey.LoadXml method, which loads a private key from XML text. The only argument is the XML string. Supported roots include RSAKeyValue, DSAKeyValue, ECCKeyValue, and Ed25519KeyValue.

Background: XML key representations such as RSAKeyValue come from the .NET/XML-DSIG world, where keys are exchanged as XML elements. This loads that form — the inverse of GetXml — which is handy for interoperating with .NET code or systems built around XML signatures. It is a plaintext format, so protect the XML like any unencrypted key material.

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Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

success = 0

'  Demonstrates the PrivateKey.LoadXml method, which loads a private key from XML text.  The only
'  argument is the XML string.  Supported roots include RSAKeyValue, DSAKeyValue, ECCKeyValue,
'  and Ed25519KeyValue.

set privKey = CreateObject("Chilkat.PrivateKey")

'  The XML text of a private key (for example as produced by GetXml).
xmlText = "<RSAKeyValue><Modulus>...</Modulus><Exponent>AQAB</Exponent>...</RSAKeyValue>"

success = privKey.LoadXml(xmlText)
If (success = 0) Then
    outFile.WriteLine(privKey.LastErrorText)
    WScript.Quit
End If

outFile.WriteLine("Loaded a " & privKey.KeyType & " private key.")

outFile.Close