%PDF-
%PDF-
Mini Shell
Mini Shell
time_estimates =
estimate_attack_times: (guesses) ->
crack_times_seconds =
online_throttling_100_per_hour: guesses / (100 / 3600)
online_no_throttling_10_per_second: guesses / 10
offline_slow_hashing_1e4_per_second: guesses / 1e4
offline_fast_hashing_1e10_per_second: guesses / 1e10
crack_times_display = {}
for scenario, seconds of crack_times_seconds
crack_times_display[scenario] = @display_time seconds
crack_times_seconds: crack_times_seconds
crack_times_display: crack_times_display
score: @guesses_to_score guesses
guesses_to_score: (guesses) ->
DELTA = 5
if guesses < 1e3 + DELTA
# risky password: "too guessable"
0
else if guesses < 1e6 + DELTA
# modest protection from throttled online attacks: "very guessable"
1
else if guesses < 1e8 + DELTA
# modest protection from unthrottled online attacks: "somewhat guessable"
2
else if guesses < 1e10 + DELTA
# modest protection from offline attacks: "safely unguessable"
# assuming a salted, slow hash function like bcrypt, scrypt, PBKDF2, argon, etc
3
else
# strong protection from offline attacks under same scenario: "very unguessable"
4
display_time: (seconds) ->
minute = 60
hour = minute * 60
day = hour * 24
month = day * 31
year = month * 12
century = year * 100
[display_num, display_str] = if seconds < 1
[null, 'less than a second']
else if seconds < minute
base = Math.round seconds
[base, "#{base} second"]
else if seconds < hour
base = Math.round seconds / minute
[base, "#{base} minute"]
else if seconds < day
base = Math.round seconds / hour
[base, "#{base} hour"]
else if seconds < month
base = Math.round seconds / day
[base, "#{base} day"]
else if seconds < year
base = Math.round seconds / month
[base, "#{base} month"]
else if seconds < century
base = Math.round seconds / year
[base, "#{base} year"]
else
[null, 'centuries']
display_str += 's' if display_num? and display_num != 1
display_str
module.exports = time_estimates
Zerion Mini Shell 1.0