login_lchpass(8) on OpenBSD
The text dd3f93ceb7b0, as OpenBSD 4.1, OpenBSD 4.0, OpenBSD 3.9, OpenBSD 3.8, OpenBSD 3.7, OpenBSD 3.6, OpenBSD 3.5, OpenBSD 3.4, OpenBSD 3.3, OpenBSD 3.2, OpenBSD 3.1 shipped it.
change local password authentication type
The text dd3f93ceb7b0, as OpenBSD 4.1, OpenBSD 4.0, OpenBSD 3.9, OpenBSD 3.8, OpenBSD 3.7, OpenBSD 3.6, OpenBSD 3.5, OpenBSD 3.4, OpenBSD 3.3, OpenBSD 3.2, OpenBSD 3.1 shipped it.
change local password authentication type