Classic ASP

Load a Private Key from a JWK

Demonstrates the Chilkat PrivateKey.LoadJwk method, which loads a private key from JWK (JSON Web Key) JSON. The only argument is the JWK JSON string. Supported key types are RSA, EC, and Ed25519 (kty=OKP).

Background: JWK is the JSON key format used throughout modern web security — JWT signing, OAuth, OpenID Connect — so this loader is what you use to consume a key from a JWK Set or an identity provider. A private JWK includes the private parameters (d and, for RSA, the CRT values); a public-only JWK omits them. As JSON in the clear, a private JWK must be handled as sensitive material.

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Classic ASP

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

'  Demonstrates the PrivateKey.LoadJwk method, which loads a private key from JWK (JSON Web Key)
'  JSON.  The only argument is the JWK JSON string.  Supported key types are RSA, EC, and
'  Ed25519 (kty=OKP).

set privKey = Server.CreateObject("Chilkat.PrivateKey")

'  A private JWK.  For a real key, "d" (and the other private parameters) would be present.
jwk = "{""kty"":""EC"",""crv"":""P-256"",""x"":""..."",""y"":""..."",""d"":""...""}"

success = privKey.LoadJwk(jwk)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( privKey.LastErrorText) & "</pre>"
    Response.End
End If

Response.Write "<pre>" & Server.HTMLEncode( "Loaded a " & privKey.KeyType & " private key.") & "</pre>"

%>
</body>
</html>