The password parameter type provides a text box for entry of a password. The password characters will be obscured as they are entered. If the parameter has a saved value this is entered (in obscured form) into the text box. If not, the default value (if any) is entered.
Note that the password string is stored in params.ini in cleartext; the stored value is not obscured by any hash function. Since most web servers will, by default, serve a params.ini file if the URL is entered in a web browser, this cannot be considered a secure method of holding a password.
Example XML parameter definition:
<param name="mypassword" type="password" default="secret" label="Enter a password" description="" size="5" />