Roll some dice to get a bunch of five-digit numbers, then look up each number in a word list. These words form a secure, memorable, random passphrase — without using or trusting any software. Sure, you could just download the word list and scroll around on your computer screen, or print it out on your inkjet. Easier to use, store and carry than a loose sheet of papers from your printer. It fits nicely in your hand and is easy to flip through.
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Create new passwords These secure passwords were created just for you and are unique. The script that generates these passwords runs in your own web browser on your own computer. You can generate strong passwords either online or offline.
These passwords never traveled over the internet during their creation. The web server that serves this page never sees these passwords. A cryptographically secure random number generator was used to create these passwords. Your browser does not support cryptographically secure random number generation. It is possible that somebody could guess these passwords if they knew the precise millisecond that you used this page.
This ensures that it is genuine and was not altered in transit. This page was served over an insecure connection. It could have be forged or altered in transit. This prevents random text from being indexed in search engines. Diceware Arnold G. Reinhold published a word list and method of rolling dice to look up words to make random passwords. Here you can generate passwords using the Diceware word list in the convenience of your web browser.
The Diceware website has detailed instructions and security tips such as: Discard any short passwords or passwords that are recognizable phrases. The frequently asked questions has a wealth of information:.
EFF Dice-Generated Passphrases
The Diceware Passphrase Home Page This page offers a better way to create a strong, yet easy to remember passphrase for use with encryption and security programs. Weak passwords and passphrases are one of the most common flaws in computer security. Take a few minutes and learn how to do it right. The information presented here can be used by anyone. No background in cryptography or mathematics is required. Just follow the simple steps below. Try our free Big Number Calculator Java applet.
Diceware Passphrase Lookup and Generator
Randomly-generated passphrases offer a major security upgrade over user-chosen passwords. Estimating the difficulty of guessing or cracking a human-chosen password is very difficult. Measuring the security of a randomly-generated passphrase is easy. The more words you choose, or the longer the list, the harder it is to crack. Looking at it mathematically, for k words chosen from a list of length n, there are nk possible passphrases of this type.
Diceware Password Generator
Diceware is a trademark of Arnold Reinhold. By all means, feel free to do so. LastPass is an excellent product and I highly recommend it. Personally, I like passwords that I can remember.
Deep Dive: EFF's New Wordlists for Random Passphrases
Create new passwords These secure passwords were created just for you and are unique. The script that generates these passwords runs in your own web browser on your own computer. You can generate strong passwords either online or offline. These passwords never traveled over the internet during their creation. The web server that serves this page never sees these passwords.