cb64

Hi Erik,

I have been re reading the cb64 draft, and i was wondering about the 
fact that the IID is independent of the prefix. This was discarded in 
SeND AFAIK in order to prevent dictionary attacks. Do you think that 
cb64 should adopt a similar protection against these attacks?
In this case, the iid would differ among locators, and probably it 
would be needed to change the id used. Perhaps the id could be the 
public key rather than its hash (as in hip)
I don't know how much this change would affect the defined protocol. In 
particular you would need to exchange the public key beforehand, which 
is not currently required. this would add overhead when no additional 
locator is needed, i am afraid.

Regards, marcelo