Two way encription for codeigniter

[eluser]mmiranda[/eluser]
Hi, what is the recommended way (if there are any) to implement a two way cipher in CI?
With two way cipher i mean a library/plugin that can encript and decript any given text, im not looking for a pentagon like strong encription, i just want to be sure the ocasional (non hacker) reader of a column (its a sip account password) will not be able to guess the correct value, but i sure do need to know it!!!
thanks for your help

[eluser]Pascal Kriete[/eluser]
I would start with CodeIgniter's native encryption library. Even if that doesn't fit your needs (although I'm pretty sure it will) the source code can probably spark a few ideas.

[eluser]mmiranda[/eluser]
exactly what i need, thank again guys