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| 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 | 1x 1x 1x 1x 1x 4x 4x 1x 4x 4x 4x 4x 4x 4x 4x 1x | import { validateMnemonic } from 'bip39';
import zxcvbn, { ZXCVBNResult, ZXCVBNScore } from 'zxcvbn';
const truncateCpuDemandingPassword = (input: string) => input.substr(0, 100);
const requiredStrengthScore: ZXCVBNScore = 4;
const requiredPasswordLength = 12;
function hasHighestPasswordScore(score: ZXCVBNScore) {
return score === requiredStrengthScore;
}
function hasSufficientLength(input: string) {
return input.length >= requiredPasswordLength;
}
export interface ValidatedPassword extends ZXCVBNResult {
meetsLengthRequirement: boolean;
meetsScoreRequirement: boolean;
meetsAllStrengthRequirements: boolean;
isMnemonicPhrase: boolean;
}
export function validatePassword(input: string): ValidatedPassword {
const isMnemonicPhrase = validateMnemonic(input);
const password = input.length > 100 ? truncateCpuDemandingPassword(input) : input;
const result = zxcvbn(password);
const meetsScoreRequirement = hasHighestPasswordScore(result.score);
const meetsLengthRequirement = hasSufficientLength(input);
const meetsAllStrengthRequirements =
meetsScoreRequirement && meetsLengthRequirement && !isMnemonicPhrase;
return Object.freeze({
...result,
isMnemonicPhrase,
meetsScoreRequirement,
meetsLengthRequirement,
meetsAllStrengthRequirements,
});
}
export const blankPasswordValidation = Object.freeze(validatePassword(''));
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