Krimos,
Thanks for the post. I will use this to integrate with my Django application which also stores a salted, sha1 password. As a temporary work around, I stored a simple sha1 password in my external db to prove that I could authenticate with this plugin. Although I appear to succeed in matching user and password, I am seeing a warning that suggests that the auth cookies cannot be correctly set. I have not made any changes to the plugin source. Have you seen anything like this?
Warning: Cannot modify header information – headers already sent by (output started at /usr/share/wordpress/wp-content/plugins/ext_db_auth.php:436) in /usr/share/wordpress/wp-includes/pluggable.php on line 649
Thanks in advance for any help you can provide.
-Bob