Decrypt a JWE into BinData

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.DecryptBd, which decrypts a recipient of a loaded JWE and writes the plaintext bytes into a BinData.

Dim success As Long
success = 0

Dim jwe As New ChilkatJwe

'  Load the JWE compact serialization to be decrypted.
Dim jweCompact As String
jweCompact = "eyJhbGciOiJBMjU2S1ciLCJlbmMiOiJBMjU2R0NNIn0.<...>.<iv>.<ciphertext>.<tag>"
success = jwe.LoadJwe(jweCompact)
If (success = 0) Then
    Debug.Print jwe.LastErrorText
    Exit Sub
End If

'  The 256-bit key-wrapping key (base64) for recipient index 0.  In production, obtain the key
'  from a secure source rather than hard-coding it.
Dim base64Key As String
base64Key = "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXowMTIzNDU="
success = jwe.SetWrappingKey(0,base64Key,"base64")
If (success = 0) Then
    Debug.Print jwe.LastErrorText
    Exit Sub
End If

'  Decrypt recipient index 0, writing the plaintext bytes into a BinData.
Dim bd As New ChilkatBinData
success = jwe.DecryptBd(0,bd)
If (success = 0) Then
    Debug.Print jwe.LastErrorText
    Exit Sub
End If

Debug.Print "Decrypted " & bd.NumBytes & " bytes."