B4X

Get the JWS Payload into BinData

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.GetPayloadBd, which writes the payload of a loaded JWS as raw bytes into a BinData.

Background. This is used when the payload is binary. In practice, validate the signature before trusting the payload.

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Dim success As Boolean = False

Dim jws As ChilkatJws
jws.Initialize

'  Load the JWS compact serialization.
Dim jwsCompact As String = "eyJhbGciOiJIUzI1NiJ9.VGhpcyBpcyB0aGUgY29udGVudCB0byBzaWduLg.<signature>"
success = jws.LoadJws(jwsCompact)
If success = False Then
    Log(jws.LastErrorText)
    Return
End If


'  Get the JWS payload as raw bytes into a BinData.
Dim bdPayload As ChilkatBinData
bdPayload.Initialize
success = jws.GetPayloadBd(bdPayload)
If success = False Then
    Log(jws.LastErrorText)
    Return
End If

Log("Payload is " & bdPayload.NumBytes & " bytes.")