Using a list of the 5,000 most common English words, filtered to be PG and easy to type, this script returns a random selection of words to use as a secure but easy-to-remember password.
There are currently over English 5,000 words in the list. This means each word has log2(5260) = 12.36 bits of entropy. Therefore, a 4-word password would have 49 bits of entropy, and a 5-word password would have almost 62 bits.
At the prompt, type ./passwd.rb and, optionally, the number of words you want (defaults to 4):
$ ./passwd.rb 7
ugly pets night claws thrill legend bee
$ ./passwd.rb 3
traded scars audio
Here are some example passwords generated by this script:
urban somehow mocking sandwiches garage
customers refuse refreshing vain smell
wandered jersey justice rumor cultural
brief living demon blames false
layer milk moses devane knees
accent nobel barto fox far
survivors apologize goddamnit units princeton
dice jumbo finish hmm legs
design sides mack rachel yea
swinging explosive vanish sickness perfection
tick christ enter range trial
josh wes agents hills lets
able grape hard steer fields
healed metal better horn dearly
falls lynne german laws madame
plane hide madly shakes fires
robert july sammy gob mart
aim raul coffin shy base
sonny gob zap assets pre
pages waist megan ike stuck
murray last safer rental demon
borrow submit claude my hiring