Created attachment 23913 [details]
debug log

xml:id attributes are still not correctly handled when using c14n11 for encryption.

Example:

When I encrypt the <data> element in the following xml document, the xml:id attribute is added to the canonical form of the data tag during encryption.

<?xml version="1.0" encoding="UTF-8"?><test xml:id="ref1234">
  <data>12345678</data>
</test>

encrypt/decrypt using c14n11 creates the following:

<?xml version="1.0" encoding="UTF-8"?><test xml:id="ref1234">
  <data xml:id="ref1234">12345678</data>
</test>

See also attached debug log.