[1] ircmaxell. (2012). password_compat. Available: https://github.com/ircmaxell/password_compat

[2] PHP.net Developers. (Unknown). Password Hashing. Available: http://php.net/manual/en/book.password.php

[3] S. Doty. (2014, Nov. 10). Encryption vs Hashing, and PHP. Available e-mail: sdoty@luc.edu Message: …You might add that RSA is based on the difficulty of factoring very large integers. Also, hashing uses the same algorithms as encryption/decryption, but for a different purpose: to create a "digest" of the input, which is a short string that (nearly) uniquely represents it.…

[4] PHP.net Developers. (Unknown) Session Management Basics. Avaialable: http://php.net/manual/en/features.session.security.management.php