5 Useful Password Generators For Linux

I am not going to discuss why you need strong passwords. It is an open secret that strong passwords keep you relatively safer.

Generating strong passwords is something you can do on your own but putting all the combination of lower and upper cases, numbers, symbols can be a tiresome work.

But you need not worry. Linux has got you covered. We’ll see 5 best password generators for Linux that will ease the task for you.

Generate secure password in Linux with these tools

Best password generators for Linux

Most of the password generation tool discussed here are command line tools. Don’t worry, I have not forgotten readers who prefer GUI. This list of password generators for Linux covers both kinds of tools.

1. Pwgen

Now while making truly random passwords is easy if you have the right tools, remembering them is hard. For e.g. my goto tool to generate a random password is pwgen. Let’s first install it –

$ sudo aptitude install pwgen

generating random passwords with pwgen is easy, just run pwgen and it will generate a list of passwords for you.

pwgen output

While the above may same excessive, in today’s world, it’s probably a tool which is needed. The default though I find to be too simplistic for my usage and use-cases.

pwgen provides a number of options that you can view in the help menu.

pwgen --help
Usage: pwgen [ OPTIONS ] [ pw_length ] [ num_pw ]

But if you want to take my advice, use the command to generate passwords in the following manner.

pwgen -ysBv 15

Just try it and you will see the results. The only way you can learn the tool, any tool for that matter is to play with it.

2. xkcdpass

I am hopeful and sure that most technology users might have heard and used xkcd by now. As it states right on the top it is”A webcomic of romance, sarcasm, math, and language.”- xkcd.com .

Now somewhere in end 2010, early 2011, xkcd.com published a webcomic strip –

A take on password strength

That webcomic became an inspiration for the tool called xkcdpass. It entered Debian somewhere in 2015 so anybody running Debian squeeze and later are surely to have it. It tells about itself in its package description only – ” A flexible and scriptable password generator which generates strong passphrases, inspired by XKCD 936:” – giving homage to the webcomic which inspired its creation.

To use it, after installation one has to simply do –

xkcdpass
bumper Bakunin untutored groszy mingler stoplight

Now what xkcdpass does is it has 12 dictionaries based on aspell work. You can read about the 12 dictionaries slightly long readme here.

xkcdpass by default uses dict2 and dict6 of the wordlist for their unique characteristics. Now while I’m not in a position to share whether it’s good choice of words or not, it’s an option that could and should be used, it can be combined with output of pwgen to have unique passwords as well. You can also use the first letter of each word of the passphrase to get a password which is easily memorable as well.

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Whether it will be successful or not solely relies on the attacker’s skill and determination. For the casual brute-force attacks as shared above, the combination might be somewhat of a better choice.

3. Diceware

Another contendor for good memorable password generation is diceware. It also can be installed as –

sudo aptitude install diceware

Now by default Diceware strings two or more words together to produce a string, something like this –

diceware
MalignPreyOiledPalmFireSome

diceware comes with its own worldlist, it has two worldlists, one is plain english words and the other one comes from EFF. Those who don’t know EFF, it is an organization which works for individual privacy rights in digital domain among other things. So you can use it in two ways –

diceware --wordlist en_orig
X'sSpiteErnstTintPiousJonas

and the one from eff

diceware --wordlist en_eff
StaplingRankedRaspingHandprintRavenVirtual

There is an outstanding bug to have some more eff lists which would make the package even more relevant in this heightened security scenario. Hopefully, it will be fixed soon so we have a better package.

4. Revelation

On the GUI side, the first tool I would share is Revelation. First install the package

sudo aptitude install revelation

Revelation is an oldish tool as it entered Debian since 2004 but has kept up with changes. Revelation describes itself as a GNOME 2 password manager but it is more than that. First either run it from either the command-line interface (CLI) or take the icon from the menu. You would usually find it in Menu > Accessories > Revelation . Just drag the icon from the menu to either the desktop or the top/bottom or side panel whichever is good for you, double-click to see the interface. For terminal users, do it as

revelation

Once you do it in either of the above ways, you need to go to View > Password Generator to see the Password Generator in action –

Revelation - path to Password Generator

Once you click on that it will give you random passwords depending upon the length of the letters needed in the password and whether you need punctuation or not as can be seen in the picture below.

default-password-generator-based-on-letters

Now this is good or bad enough depending on what your needs are.

5. KeepassX

The tool has been in Debian for over a decade as well, was introduced in 2006. You can install it in Debian and other downstream or/and derivative distributions by doing –

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sudo aptitude install keepassx

Keepassx describes itself as a Cross Platform Password Manager but its much more than that. It puts your password in a database (like Mozilla Firefox does with sqlite3) and also encrypts it either using AES or Twofish algorithims (similar to Mozilla Firefox as well.)

Now in Keepassx, there is no easy way to get to the password generator. The way is first make a database, then make a group and then make an entry, when making the entry you will see a small button say Gen. If you see the third line Repeat, you see blank space, the button next to the blnak space

The first window where the gen. option is given

Once you click on Gen, another window appears

the password generation window

The Generate button generates passwords for you depending on what options you choose. Just copy the password on your favorite text-editor to know what password was generated.

The biggest difference between the command-line tools (CLI) and the Graphical User Interface (GUI) tools is the CLI tools can be used in scripts. So they can be used for both users and web hosters who might want to offer password generation as a service along with other services.

Best practices and tips for having strong passwords and security

  • No one tool or no one strategy is the answer to all kinds of attacks and there are many different types of attacks.
  • If possible try to find services which don’t put a cookie or a password. Such services are rare but they are there. A good example would perhaps be duckduckgo.com
  • One of the most important rule, don’t use the same password to all the sites. That is like having all locks in real life using the same key. You can very well understand the consequences of that.
  • One of the most common ways that an attacker can attack you is by owning your ADSL modem/router. At the very least don’t leave it at ‘admin/admin’ for both user and password. Ideally, you should change both but if you don’t want to change user:admin at least change the password there.
  • Lastly, read and research on your own – Being a web user, it is imperative that you read and research on your own. There are all kinds of tools and techniques being born every day, While it is next to impossible to learn and keep watch on all that is being claimed and shared, at least some barest knowledge is needed to survive in this web world.

Hope these password generation Linux tools and the tips helps you to be more secure. Have a safe time on the web.

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