Exact model

Guess one word from the EFF wordlist

Probability:
0.0129%
Odds:
1 to 7,770
dBan
−38.9 dBan

Five die rolls turn into one word from the EFF list. An exact guess has to find that one component of a longer passphrase.

Calculation

p = 1 / 6⁵ = 1 / 7,776

Assumptions

Five ordered rolls of a fair six-sided die select the word. All 6⁵ sequences are equally likely, and the model makes one independent word guess.

Sources

  1. EFF: Dice-Generated Passphrases
  2. EFF: new wordlists for random passphrases