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* Avoid creating passwords longer than amount of entropy

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Erik van 't Wout
2021-03-29 22:38:32 +02:00
parent 4f41001b7c
commit 374fd74b33
1 changed files with 11 additions and 5 deletions
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14
ewpass.js
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@@ -160,14 +160,20 @@
$docopy = $('#docopy'); $docopy = $('#docopy');
$docopy.prop('disabled', 'disabled'); $docopy.prop('disabled', 'disabled');
sha256(DERIVE_PREFIX + $('#seed').val() + '/' + settings.domains[currentDomain][1] + '/' + currentDomain).then(hash => { const ENTROPY_SIZE = 8;
const map = settings.domains[currentDomain][2] ? EXTENDED_MAP : BASIC_MAP; const map = settings.domains[currentDomain][2] ? EXTENDED_MAP : BASIC_MAP;
const rounds = calcRounds(map.length); const rounds = calcRounds(map.length);
if (settings.domains[currentDomain][0] > ENTROPY_SIZE * rounds) {
settings.domains[currentDomain][0] = ENTROPY_SIZE * rounds;
ns.loadSettingsForDomain();
}
sha256(DERIVE_PREFIX + $('#seed').val() + '/' + settings.domains[currentDomain][1] + '/' + currentDomain).then(hash => {
var pw = ''; var pw = '';
for (var i = 0; i < 8; i++) { for (var i = 0; i < ENTROPY_SIZE; i++) {
var x = parseInt(hash.substring(i * 8, (i+1) * 8), 16); var x = parseInt(hash.substring(i * ENTROPY_SIZE, (i+1) * ENTROPY_SIZE), 16);
for (var j = 0; j < rounds; j++) { for (var j = 0; j < rounds; j++) {
pw += map.substring(x % map.length, x % map.length + 1); pw += map.substring(x % map.length, x % map.length + 1);
x = Math.floor(x / map.length); x = Math.floor(x / map.length);