Encrypt a JWE with a Recipient Public Key

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.SetPublicKey, which sets the public key used to encrypt for a recipient. The example uses RSA-OAEP-256 key management with AES-256-GCM content encryption.

The file path is relative to the application's current working directory. An absolute path may also be used. Supply the path appropriate to your own environment.

Dim success As Boolean = False

Dim jwe As ChilkatJwe
jwe.Initialize

'  Protected header: RSA-OAEP-256 key management with AES-256-GCM content encryption.
Dim header As ChilkatJsonObject
header.Initialize
header.UpdateString("alg", "RSA-OAEP-256")
header.UpdateString("enc", "A256GCM")
success = jwe.SetProtectedHeader(header)
If success = False Then
    Log(jwe.LastErrorText)
    Return
End If


'  The file path is relative to the application's current working directory.  An absolute path
'  may also be used.  Supply the path appropriate to your own environment.
'  Load the recipient's public key.
Dim pubKey As ChilkatPublicKey
pubKey.Initialize
success = pubKey.LoadFromFile("qa_data/recipient_pubkey.pem")
If success = False Then
    Log(pubKey.LastErrorText)
    Return
End If


'  Set the public key used to encrypt for recipient 0.
success = jwe.SetPublicKey(0, pubKey)
If success = False Then
    Log(jwe.LastErrorText)
    Return
End If


Dim jweCompact As String = jwe.Encrypt("This is the secret content.", "utf-8")
If jwe.LastMethodSuccess = False Then
    Log(jwe.LastErrorText)
    Return
End If

Log(jweCompact)