I wonder why passphrases fell out of style? If you remembered a series of random words like you were activating the freaking Winter Soldier, boom, 40+ characters!
If we take the EFF wordlist commonly used to generate passphrases, we have 7776 words. If we take ASCII alphanumerics and special characters we have about 92. Assuming we generate a NIST compliant password of 15 characters in length we get 92^15=2.8*10^29 of combinations. To get the same level of security (same number of combinations) using the EFF wordlist we need (log(2.8)+29)/log(7776)=29.45/3.9=7.6 around 8 words. If we assume the words are 7 characters long on average, plus the separators, we get 7*8+6=62 characters long. If we start to also include Unicode characters like other scripts or emojis (something I’ve recommended to others) the required number of words grows even more. I don’t know about you, but I can’t be bothered to type that all out every time, a password manager works for me.
Did they ever get into style? I use them, but I don’t know anyone else who does. And some sites make diceware passphrases harder to use by e.g. requiring you to add numbers, special characters or capital letters, or by banning spaces. Or by banning non-ASCII, which makes it harder to use diceware passphrases in other languagess than English.
I wonder why passphrases fell out of style? If you remembered a series of random words like you were activating the freaking Winter Soldier, boom, 40+ characters!
If we take the EFF wordlist commonly used to generate passphrases, we have 7776 words. If we take ASCII alphanumerics and special characters we have about 92. Assuming we generate a NIST compliant password of 15 characters in length we get 92^15=2.8*10^29 of combinations. To get the same level of security (same number of combinations) using the EFF wordlist we need (log(2.8)+29)/log(7776)=29.45/3.9=7.6 around 8 words. If we assume the words are 7 characters long on average, plus the separators, we get 7*8+6=62 characters long. If we start to also include Unicode characters like other scripts or emojis (something I’ve recommended to others) the required number of words grows even more. I don’t know about you, but I can’t be bothered to type that all out every time, a password manager works for me.
I can memorize the 8 words though, which is why I use that method for anything where I can’t use keepass.
Yeah, that makes a lot of sense. I guess I meant for things where you need to actually memorize a password, like for the password manager.
But yeah for 99% of cases, a backed up KeePass database with randomly generated ridiculous passwords for every little service is fantastic. 👍
Did they ever get into style? I use them, but I don’t know anyone else who does. And some sites make diceware passphrases harder to use by e.g. requiring you to add numbers, special characters or capital letters, or by banning spaces. Or by banning non-ASCII, which makes it harder to use diceware passphrases in other languagess than English.