Passphrase vs Password: Which Is More Secure
Diceware passphrases vs random character passwords: entropy comparison, memorability, and when to use each approach.
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Tags: security, passwords, passphrase
Passphrase vs Password: Which Is More Secure in 2025? "Correct-horse-battery-staple." If you've been around security circles, you know the XKCD comic. It makes a real point: a string of four random common words is more secure than a scrambled word with substitutions, and vastly easier to remember. But is this still true in 2025? And how do passphrases and passwords actually compare on entropy? What Is a Passphrase? A passphrase is a sequence of random words used as a password. The canonical method for generating one is Diceware: roll five dice, look up the result in a word list of 7,776 words (6^5), and repeat for each word. The randomness comes from the dice, not from you picking words — that's the critical part. The EFF has updated the original Diceware wordlist with words that are…
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