Free change password software for linux

If you arent concerned about someone looking over your shoulder and stealing your passwords, why hassle with those obfuscated password fields, where you never know whether you typed your 30 character code correctly or not...

Unhide Passwords shows the contents of password fields in cleartext (instead of the asterisks), to make that process a bit easier.

Magic Password Generator is an extension which magically makes custom passwords for each website.

Right click the toolbar, and click customize, to get the button to activate the extension!

Alternate Password Library (libaltpw) adds alternate password support dynamically with LD_PRELOAD or by linking the shared library with the executable.
Useful, for example, to make sendmail, procmail, and pop3d use an alternate password if you are an ISP.
Works with any program that uses the getpw* family of functions and the password file is configurable through the environment.
Basically this is just another library, you can link against it and it overrides getpw* to point at an alternate password file specified by the environment variable ALTPASSWD.
So the normal way to use it, in non SUID form, would be:
# export ALTPASSWD=/some/other/passwd.file
# export LD_PRELOAD=/usr/local/lib/libaltpw.so.X
# < some command >
And some command will see the alternate password file. This does not work in an SUID contect because LD_PRELOAD is ignored for SUID binaries. To help determine when things will and will not work like expected, there is the runaltpw command. So the above becomes this:
# runaltpw /some/other/passwd.file < some command > < arg > < arg >
And if it thinks things look OK, i.e. not SUID, passwd exists and everything else, it will exec the command after setting up the environment. If things look strange, if will exit instead.
There are also some README.* files that deal with specific programs I had trouble with, either because they had a strange build process, were SUID by default, or both.
Enhancements:
- Added support for the getgr* group handling functions, and a /etc/group.switch and ALTGROUP in the environment, all similar to how the altpw functions work but for groups, as suggested by Bruce Richardson.

Password Save extension brings up a plain text listing of your passwords in a browser window that can be easily copy-pasted or saved to the hard-drive.

Some javascript warning fixes and a bit of debugging code for helping people that the extension doesnt work for (Email me if you get a blank screen and have some free time to help me debug and well solve this problem once and for all)

In Preferences, go to Privacy => Passwords. When you click View Saved Passwords, there will be an added "Dump Passwords" button. Clicking this will pop up a new browser window with the saved passwords which can easily be saved, printed, or copy-pasted into another location.

This extension will only work (as is) on the released 1.5beta1 - 1.5beta2. The intall.rdf can be tweaked to get it to install fine on any recent nightly or the Deer Park Alphas. It -=can not=- be tweaked to work on 1.0. Sorry!

DBIx::Password provides an abstraction layer for password maintenance. It is database independent and only overrides the connect method (so it basically behaves as DBI normally does).

You provide a single virtual user name in the connect method and the module determines which database/which user/which password to provide.

Ruby/Password is a suite of password handling methods for Ruby.
It supports the manual entry of passwords from the keyboard in both buffered and unbuffered modes, random password generation, password strength checking, phonemic password generation (for easy memorisation by human-beings) and the encryption of passwords.
CrackLib makes literally hundreds of tests to determine whether youve chosen a bad password.
- It tries to generate words from your username and GECOS entry and tries to match them against the password youve chosen.
- It checks for simplistic patterns.
- It then tries to reverse-engineer your password into a dictionary word, and searches for it in your dictionary.
- after all that, its PROBABLY a safe(-ish) password. 8-)
The target audience for this library is system administrators who need to write Ruby programs that prompt for, generate, verify and encrypt passwords.

Password Hasher enables a good security practice.
What good security practice demands:
- Strong passwords that are hard to guess.
- Different passwords at each site.
- Periodically changing existing passwords.
Why you probably arent practicing good security:
- Strong passwords are difficult to remember.
- Juggling a multitude of passwords is a pain.
- Updating passwords compounds the memorization problem.
Main features:
- Automatically generates strong passwords.
- One master key produces different passwords at many sites.
- Quickly upgrade passwords by "bumping" the site tag.
- Upgrade a master key without updating all sites at once.
- Supports different length passwords.
- Supports special requirements, such as digits and punctuation.
- Supports restricting a hash word to not use special characters. (New!)
- Saves all data to the browsers secure password database.
- Generates a portable HTML page with your site tags and option settings that allows you to generate your hash words in any browser on any machine without the extension installed. (New!)
- Can add marker buttons to unmask passwords on any web site. (New!)
- Extremely simple to use!