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Windows Credentials Manager - AutoSplit Larger Secrets

See more Secrets Examples

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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Local $bSuccess = False

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

$oSecrets = ObjCreate("Chilkat.Secrets")

; The default value of AutoSplit is True.
; 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.
$oSecrets.AutoSplit = True

; 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.)
$oSecrets.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.
$oJson = ObjCreate("Chilkat.JsonObject")
$oJson.UpdateString("appName","AA_MyApp")
$oJson.UpdateString("service","OAuth2")
$oJson.UpdateString("domain","onedrive")
$oJson.UpdateString("username","matt")

; Get the secret to be stored.
$oJsonSecret = ObjCreate("Chilkat.JsonObject")
$bSuccess = $oJsonSecret.LoadFile("qa_data/tokens/oneDrive.json")
If ($bSuccess = False) Then
    ConsoleWrite($oJsonSecret.LastErrorText & @CRLF)
    Exit
EndIf

; 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.
$bSuccess = $oSecrets.UpdateSecretJson($oJson,$oJsonSecret)
If ($bSuccess = False) Then
    ConsoleWrite($oSecrets.LastErrorText & @CRLF)
    Exit
EndIf

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

; 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.

ConsoleWrite("Success" & @CRLF)