Parrot is a easy to use passphrase generator based on Diceware (You can download a word list from that link).
The idea of parrot is to be very simple. By default, parrot generates 8 word length passphrases (~200bits entropy, which is security overkill for most users use cases). You can configure the output simply passing length (number) and a quoted character delimiter, parrot generate [length] ["delimiter"], see example below:
$ parrot generate 6 "-"
Ella-Woo-Steak-Keats-Shift-ChileDownload a word list from https://theworld.com/~reinhold/diceware.html (If you download one from this site, remember to remove the PGP signatures and leave just the words) or create your own.
Then run: parrot init my_diceware_long_word_list.txt to initialize the database.
You can test passphrases strength with zxcvbn (Low-Budget Password Strength Estimation). An example of a 5 words passphrase:
{
"password": "Soya Prick Jura Efface Yi",
"guesses": "559440010000000000000000",
"guesses_log10": 23.7477535229952,
"sequence": [
{
"pattern": "bruteforce",
"token": "Soya P",
"i": 0,
"j": 5,
"guesses": 1000000,
"guesses_log10": 5.999999999999999
},
{
"pattern": "dictionary",
"i": 6,
"j": 9,
"token": "rick",
"matched_word": "rick",
"rank": 185,
"dictionary_name": "male_names",
"reversed": false,
"l33t": false,
"base_guesses": 185,
"uppercase_variations": 1,
"l33t_variations": 1,
"guesses": 185,
"guesses_log10": 2.2671717284030133
},
{
"pattern": "bruteforce",
"token": " Jura Ef",
"i": 10,
"j": 17,
"guesses": 100000000,
"guesses_log10": 8
},
{
"pattern": "dictionary",
"i": 18,
"j": 21,
"token": "face",
"matched_word": "face",
"rank": 252,
"dictionary_name": "us_tv_and_film",
"reversed": false,
"l33t": false,
"base_guesses": 252,
"uppercase_variations": 1,
"l33t_variations": 1,
"guesses": 252,
"guesses_log10": 2.4014005407815437
},
{
"pattern": "bruteforce",
"token": " Yi",
"i": 22,
"j": 24,
"guesses": 1000,
"guesses_log10": 2.9999999999999996
}
],
"calc_time": "0:00:00.002280",
"crack_times_seconds": {
"online_throttling_100_per_hour": "20139840360000001117985724.00",
"online_no_throttling_10_per_second": "55944001000000000000000",
"offline_slow_hashing_1e4_per_second": "55944001000000000000",
"offline_fast_hashing_1e10_per_second": "55944001000000"
},
"crack_times_display": {
"online_throttling_100_per_hour": "centuries",
"online_no_throttling_10_per_second": "centuries",
"offline_slow_hashing_1e4_per_second": "centuries",
"offline_fast_hashing_1e10_per_second": "centuries"
},
"score": 4,
"feedback": {
"warning": "",
"suggestions": []
}
}