The CodeIgniter blog has posted another community spotlight by one of its members - this time it's Mathew Davies (author of the Redux Auth library) talking about hashing.
He talks about how several topics are used in his Redux library including hashing, salts, a method for getting/resetting a forgotten password and how to use database sessions to manage users logged in.
The Redux Authentication System is a "great CodeIgniter Auth library. It's light, easy to use and fully featured. It's a great choice for your new or existing project due to the power it gives to the developer".