EllisLab/CodeIgniter — pull request #1847 by daniel-honestempire (2012-10-03 18:41:15+00:00)
Title: Support for hashing algorithms other than SHA1 and MD5

This allows the `CI_Encrypt` class to generate hashes using algorithms other than SHA1 and MD5, any algorithm available can be used and this is checked using the `hash_algos()` function, which is available in PHP versions earlier than the version required by CodeIgniter. This also retains backwards compatibility.

Signed-off-by: Daniel Morris