change to default password hashing in PAM

[James Westby]

On Tue, 2008-08-26 at 16:16 -0700, Kees Cook wrote:
> In the interest of staying ahead of modern cryptanalysis, Intrepid's PAM
> (1.0.1-3ubuntu5) now stores new passwords with salted SHA512, rather
> than the prior salted MD5 method.  Earlier password hashing schemes are
> still supported as before (DES, MD5).

Hi Kees,

Thanks for doing this, it seems like a good change.

If we wish to use SHA512 with an existing account is simply changing
the password once the new version is installed sufficient?

Thanks,

James