Diceware is designed to make passwords against dictionary attacks. Estimates of diceware entropy begin with the assumption that an attacker has the dictionary.

Diceware is designed to make passwords against dictionary attacks. Estimates of diceware entropy begin with the assumption that an attacker has the dictionary. A dictionary with 6^5 entries would take 6^5^N guesses to exhaust (assuming the entries are randomly chosen). 6^5^4 = 2^52.