[Cryptography] Email and IM are ideal candidates for mix networks

[danimoth]

On 27/08/13 at 10:05pm, Christian Huitema wrote:
> > Suppose, as in Bitcoin, my email address *is* my public key
> 
> You can even use some hash compression tricks so you only need 9 or 10 
> characters to express the address as hash of the public key. 
> 
> That works very well, until you have to change the public key.

.. and until someone want to find a public key which shares the first 
10 digits of the hash with yours.