How does padding in PMAC work? I have been told two stories: Firstly, I have been told that it works similar to CMAC padding, and secondly, I have been told that it does not need padding.
I find the second story very strange as I think one could make an existential forger quite easily. But if PMAC pads like CMAC, then surely we would need another key.
TL;DR I don't know how padding in PMAC works, please can someone explain.
Thanks Barry
