Classic ASP

Windows Credentials Manager - AutoSplit Larger Secrets

Secrets stored in the Windows Credentials Manager can be a maximum of 2560 bytes in size. If the content of the secret is too large for the Windows Credential Manager, Chilkat will automatically split the secret into parts and store a shorter JSON manifest.

Note: This example requires Chilkat v10.1.0 or later.

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

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

set secrets = Server.CreateObject("Chilkat.Secrets")

' The default value of AutoSplit is 1.
' Note: AutoSplit only applies when the secret location is "local_manager"
' and the app is running on the Windows OS.  All other secret locations, such as Apple Keychain,
' AWS Secrets Manager, Azure Key Vault, etc. don't have limitations that are so small.
secrets.AutoSplit = 1

' On Windows, this is the Windows Credentials Manager
' On MacOS/iOS, it is the Apple Keychain
' (This example is explaining how a secret too large for the Windows Credential Manager
' is automatically compressed and split into parts if needed.)
secrets.Location = "local_manager"

' Specify the name of the secret.
' service and username are required.
' appName and domain are optional.
' Note: The values are arbitrary and can be anything you want.
set json = Server.CreateObject("Chilkat.JsonObject")
success = json.UpdateString("appName","AA_MyApp")
success = json.UpdateString("service","OAuth2")
success = json.UpdateString("domain","onedrive")
success = json.UpdateString("username","matt")

' Get the secret to be stored.
set jsonSecret = Server.CreateObject("Chilkat.JsonObject")
success = jsonSecret.LoadFile("qa_data/tokens/oneDrive.json")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( jsonSecret.LastErrorText) & "</pre>"
    Response.End
End If

' Note: The oneDrive.json file we used for testing is 4824 bytes in size,
' which exceeds the maximum size (2560 bytes) allowed by the Windows Credentials Manager.

' When the size is too large, Chilkat will first compress the content of the secret.
' If the compressed size is small enough, then it is stored compressed without splitting.
' Otherwise the compressed data is split

' Your application does not need to know how the secret is stored in the Windows Credentials Manager.
' When fetching the secret, Chilkat automatically decompresses and re-composes from parts.

' Create or update the secret.
success = secrets.UpdateSecretJson(json,jsonSecret)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( secrets.LastErrorText) & "</pre>"
    Response.End
End If

' This is the auto-split secret viewed in the Windows Credentials Manager:
' 

' Note: If you delete the auto-split secret by calling Chilkat's DeleteSecret method,
' the parts are automatically deleted.
' Also, if you update the secret, the old parts are automatically deleted and new parts are created.

Response.Write "<pre>" & Server.HTMLEncode( "Success") & "</pre>"

%>
</body>
</html>