What padding do we use?

Hi Joseph,

in [1], I did not find any information about what padding mechanism we use? 
PKCS7/PKCS5?

And for AES which allows block sizes of 128, 192 and 256 bit, we should 
explicitly state that we use a block size of 128 bit (OK, the IV is 128 bit 
and that should be a hint for the block size, but writing it down would be 
clearer).

Best regards,
Christian


[1] http://www.w3.org/Encryption/2001/Drafts/xmlenc-core/