Encrypt Content to a JWE

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.Encrypt, which encrypts a string and returns the resulting JWE. The charset argument converts the text to bytes before encryption.

Dim success As Long
success = 0

Dim jwe As New ChilkatJwe

'  Set the JWE protected header, specifying the key-management algorithm (alg) and the content-
'  encryption algorithm (enc).
Dim header As New ChilkatJsonObject
success = header.UpdateString("alg","A256KW")
success = header.UpdateString("enc","A256GCM")
success = jwe.SetProtectedHeader(header)
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

'  Encrypt the content.  The 2nd argument is the charset used to convert the text to bytes.  The
'  returned string is the JWE (compact serialization by default).
Dim jweCompact As String
jweCompact = jwe.Encrypt("This is the secret content.","utf-8")
If (jwe.LastMethodSuccess = 0) Then
    Debug.Print jwe.LastErrorText
    Exit Sub
End If

Debug.Print jweCompact