Expressions '...should == @user' caused specs to fail because of
ArgumentError in 'User authentication resets password'
wrong number of arguments (0 for 1)
Replacing expectations declared for User objects with expectations declared
for their id fields solves the problem and doesn't change specs' logic.
BCrypt is regarded as a more secure alternative to hashing using message
digest algorithms, such as MD5 and SHA families [0, 1, 2]. Apart from
built-in salting it is adaptable to the increasing power of modern
processing units, which makes it more secure against brute-force cracking.
This commit makes all passwords hashed using BCrypt. The session tokens
remain generated using SHA1. Tests were updated, `rake test:units` and
`rake test:functionals` didn't report any regressions.
[0] http://bcrypt.sourceforge.net/
[1] http://en.wikipedia.org/w/index.php?title=Bcrypt&oldid=439692871
[2] eab1c72/README.md