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Are you using passphrases? Is it worth it? (discuss.tchncs.de)

submitted 8 months ago by [email protected] to c/[email protected]

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Nowadays, most people use password managers (hopefully). However, there are still some passwords that you need to memorize, like master password (for a password manager), phone lock, wifi password, etc.

Security wise, can passphrase reach the strength of a good password without getting so long that it defeats the purpose of even using it?

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[–] [email protected] 10 points 8 months ago* (last edited 8 months ago)

Dictionary attacks have been around for a long time, but It's still quite strong especially if you throw in a number.

A fully random 8 character password has about 10^14 brute force combinations (assuming upper and lower case + the normal special characters). 4 words choosen at random from the top 3000 words (which is a very small vocabulary really) is 10^13 dictionary attack combinations, add a single number or account for variations in word style (I.e maybe don't always use camel case) and you've matched the difficulty. If you use 5 words it's 10^17 combinations.

(This is basicly copy pasted from a comment I made earlier)