Apple Training Series: Mac OS X System Administration Reference, Volume 1

Where are the user passwords stored on Mac OS X?

What types of password hash methods can be enabled/disabled using Server Admin?

What application is used to manage certificates in Mac OS X and Mac OS X Server?

/private/var/db/shadow/hash/

CRAM-MD5, NTLMv1 and NTLMv2, LAN Manager, APOP, and WebDAV

Keychain Access