1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
import _ from 'lodash';
export { getPasswordCrackTimeEstimation, getCharsetLength };
function prettifyExponentialNotation(exponentialNotation: number) {
const [base, exponent] = exponentialNotation.toString().split('e');
const baseAsNumber = Number.parseFloat(base);
const prettyBase = baseAsNumber % 1 === 0 ? baseAsNumber.toLocaleString() : baseAsNumber.toFixed(2);
return exponent ? `${prettyBase}e${exponent}` : prettyBase;
}
function getHumanFriendlyDuration({ seconds }: { seconds: number }) {
if (seconds <= 0.001) {
return 'Instantly';
}
if (seconds <= 1) {
return 'Less than a second';
}
const timeUnits = [
{ unit: 'millenium', secondsInUnit: 31536000000, format: prettifyExponentialNotation, plural: 'millennia' },
{ unit: 'century', secondsInUnit: 3153600000, plural: 'centuries' },
{ unit: 'decade', secondsInUnit: 315360000, plural: 'decades' },
{ unit: 'year', secondsInUnit: 31536000, plural: 'years' },
{ unit: 'month', secondsInUnit: 2592000, plural: 'months' },
{ unit: 'week', secondsInUnit: 604800, plural: 'weeks' },
{ unit: 'day', secondsInUnit: 86400, plural: 'days' },
{ unit: 'hour', secondsInUnit: 3600, plural: 'hours' },
{ unit: 'minute', secondsInUnit: 60, plural: 'minutes' },
{ unit: 'second', secondsInUnit: 1, plural: 'seconds' },
];
return _.chain(timeUnits)
.map(({ unit, secondsInUnit, plural, format = _.identity }) => {
const quantity = Math.floor(seconds / secondsInUnit);
seconds %= secondsInUnit;
if (quantity <= 0) {
return undefined;
}
const formattedQuantity = format(quantity);
return `${formattedQuantity} ${quantity > 1 ? plural : unit}`;
})
.compact()
.take(2)
.join(', ')
.value();
}
function getPasswordCrackTimeEstimation({ password, guessesPerSecond = 1e9 }: { password: string; guessesPerSecond?: number }) {
const charsetLength = getCharsetLength({ password });
const passwordLength = password.length;
const entropy = password === '' ? 0 : Math.log2(charsetLength) * passwordLength;
const secondsToCrack = 2 ** entropy / guessesPerSecond;
const crackDurationFormatted = getHumanFriendlyDuration({ seconds: secondsToCrack });
const score = Math.min(entropy / 128, 1);
return {
entropy,
charsetLength,
passwordLength,
crackDurationFormatted,
secondsToCrack,
score,
};
}
function getCharsetLength({ password }: { password: string }) {
const hasLowercase = /[a-z]/.test(password);
const hasUppercase = /[A-Z]/.test(password);
const hasDigits = /\d/.test(password);
const hasSpecialChars = /\W|_/.test(password);
let charsetLength = 0;
if (hasLowercase) {
charsetLength += 26;
}
if (hasUppercase) {
charsetLength += 26;
}
if (hasDigits) {
charsetLength += 10;
}
if (hasSpecialChars) {
charsetLength += 32;
}
return charsetLength;
}
|
