Add scrypt to the options

[GoogleCodeExporter]

Can you add scrypt to the options? scrypt is a key derivation function, which 
is designed to be far more secure against hardware brute-force attacks than 
PBKDF2 or bcrypt.

This will be a very good addition for password hashing, because of GPU 
brute-force techniques, the default hashes aren't that secure anymore.

For details, you can look at: http://www.tarsnap.com/scrypt.html
and: http://en.wikipedia.org/wiki/Scrypt

Maybe you'll find this interesting: 
http://www.codinghorror.com/blog/2012/04/speed-hashing.html

Original issue reported on code.google.com by michiele...@gmail.com on 20 Nov 2012 at 1:18