[OATH-Toolkit-help] PSKC limitations

[Simon Josefsson]

Before anyone spends time wondering why some things doesn't work, I
should mention that the PSKC implementation has a few limitations:

* No functions to set fields, only to read them.

* The EncryptionKey, MACMethod, Signature types are not supported.

* Only PlainValue data fields are supported (i.e., EncryptedValue and
  ValueMAC fields are not supported).

* No extensions are implemented.

The tool should print reasonable warnings and debug messages when it
discovers something it doesn't support.

My priority is to work on functions to set PSKC fields, to enable
building an interface in pskctool to generate PSKC data, and then look
at the encryption part of PSKC.

/Simon