PERFORCE change 165989 for review

[Gleb Kurtsou]

http://perforce.freebsd.org/chv.cgi?CH=165989

Change 165989 by gk at gk_h1 on 2009/07/13 09:04:28

	Import public domain implementation of Salsa20 stream block cipher by Daniel Bernstein.
	Imported version additionally supports encryption at arbitrary offset in stream and preserves offset between consequent calls to encryption function. 

Affected files ...

.. //depot/projects/soc2009/gk_pefs/sys/crypto/salsa20/salsa20.c#1 add
.. //depot/projects/soc2009/gk_pefs/sys/crypto/salsa20/salsa20.h#1 add

Differences ...