Which authentication library would be good for me?

[eluser]fefe[/eluser]
Hi!

I want to build a small website with couple of pages where I would like to inplement an admin area for the article and gallery managemant. So actually it would be not a complex usermanagemant system. I've been looking for a library which would accomplish this issue, but there are so many that I could not decide which one would be best for me. I'm using the newest version of codeigniter.

Every sugestion would be welcome.

Thanks