Sign a JWS with an HMAC Key from BinData

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.SetMacKeyBd, which sets the symmetric MAC key for a signature from the raw bytes in a BinData.

Dim success As Long
success = 0

Dim jws As New ChilkatJws

'  Protected header specifying HMAC-SHA256.
Dim header As New ChilkatJsonObject
success = header.UpdateString("alg","HS256")
success = jws.SetProtectedHeader(0,header)
If (success = 0) Then
    Debug.Print jws.LastErrorText
    Exit Sub
End If

Dim bIncludeBom As Long
bIncludeBom = 0
success = jws.SetPayload("This is the content to sign.","utf-8",bIncludeBom)
If (success = 0) Then
    Debug.Print jws.LastErrorText
    Exit Sub
End If

'  Set the symmetric MAC key for signature 0 from the raw bytes in a BinData.  In production, obtain
'  the key material from a secure source.
Dim bdKey As New ChilkatBinData
success = bdKey.AppendEncoded("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXowMTIzNDU=","base64")
success = jws.SetMacKeyBd(0,bdKey)
If (success = 0) Then
    Debug.Print jws.LastErrorText
    Exit Sub
End If

Dim jwsCompact As String
jwsCompact = jws.CreateJws()
If (jws.LastMethodSuccess = 0) Then
    Debug.Print jws.LastErrorText
    Exit Sub
End If

Debug.Print jwsCompact