Decrypt a JWE with a Private Key

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.SetPrivateKey, which sets the private key used to decrypt a recipient of a loaded JWE.

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
success = False

Dim jwe As New Chilkat.Jwe

//  Load the JWE compact serialization to be decrypted.
Dim jweCompact As String
jweCompact = "eyJhbGciOiJBMjU2S1ciLCJlbmMiOiJBMjU2R0NNIn0.<...>.<iv>.<ciphertext>.<tag>"
success = jwe.LoadJwe(jweCompact)
If (success = False) Then
    System.DebugLog(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 private key.
Dim privKey As New Chilkat.PrivateKey
success = privKey.LoadPemFile("qa_data/recipient_privkey.pem")
If (success = False) Then
    System.DebugLog(privKey.LastErrorText)
    Return
End If

//  Set the private key used to decrypt recipient 0.
success = jwe.SetPrivateKey(0,privKey)
If (success = False) Then
    System.DebugLog(jwe.LastErrorText)
    Return
End If

Dim content As String
content = jwe.Decrypt(0,"utf-8")
If (jwe.LastMethodSuccess = False) Then
    System.DebugLog(jwe.LastErrorText)
    Return
End If

System.DebugLog(content)