Questions: why for pycrypto needed?

[Alexander Belchenko]

John Arbash Meinel пишет:
I probably miss something about bzr. On newly added page in wiki:
>>http://bazaar.canonical.com/BzrInstallation I read that bzr want
>>pycrypto package. Is there some new features is coming?
> 
> Paramiko requires pycrypto. And bzr requires paramiko for sftp support.

I'm probably bore man. But pycrypto mentioned in top 3 must have things 
for bzr. Paramiko mentioned later in 'strongly recommended' section. My 
brain did not build bridge between paramiko and pycrypto. So, my first 
thought was: 'wow, to bzr added new cool features?'

--
Alexander