Test vectors for ConcatKDF and PBKDF2 + suggestion for editorial update to XML Enc 1.1.

Yes, believe it or not, here are finally two test vectors for the DerivedKey type... Thanks to Frederick, the test vectors have been uploaded and are available from the interop site (URL: http://www.w3.org/2008/xmlsec/wiki/Interop)

Also, while doing these examples I noted a minor deficiency in the specification: The current text defining the MasterKeyName element in Section 3.5.2 of XML Encryption 1.1 should probably be changed from:

MasterKeyName is an optional element for associating a user readable name with the master key (or secret) value.

To:

MasterKeyName is an optional element for associating a name with the master key (or secret) value.

(This since the key label may not always be read by a user but by a process.)

Best,
-- Magnus