I think it would be worthwhile for Gentoo to look into implementing a "modern" password hashing scheme such as this one. Having password hashes that are more difficult to attack (require more cpu power) just add one more thing to help make everything more secure.
solar: This is your code. If it can be integrated without breaking anything, I'd like it too.
I have not looked at it, but I guess the most important question is - does it rely on additional libs ?
Re: Additional Comment #1 I think you might have me confused with Solar Designer solar@openwall. I'm not him, nor is he I. Anyway as you are wanting this support I'll bounce this bug to you. Reassign to pam-bugs if more appropriate.
pam people need to evaluate carefully.
This may be another useful, and possibly simpler option for adding a feature like this: (supports blowfish) http://www.thkukuk.de/pam/pam_unix2/
This is non trivial to resolve, and pam_unix2 really looks simpler to achieve. Closing as LATER until someone can work it out in an "ebuildable" manner without touching glibc.
