@mybucks.online/core/dist/src/random.js

Core library for Mybucks.online — a seedless wallet and gifting wallet: disposable gift wallets, fund and share via secure 1-click URL. Browser-only (no servers, database, or install). Cryptography and wallet primitives for airdrops, giveaways, campaigns,

import zxcvbn from "zxcvbn";
import { PASSPHRASE_MIN_ZXCVBN_SCORE, PIN_MIN_ZXCVBN_SCORE, } from "./credentials.js";
const UPPER = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
const LOWER = "abcdefghijklmnopqrstuvwxyz";
const DIGITS = "0123456789";
const SYMBOLS = "`~!@#$%^&*()-_+={}[]\\|:;\"'<>,.?/";
function randomInt(max) {
    if (max > 255) {
        throw new RangeError(`max must be <= 255, got ${max}`);
    }
    const arr = new Uint8Array(1);
    const limit = 256 - (256 % max);
    do {
        globalThis.crypto.getRandomValues(arr);
    } while (arr[0] >= limit);
    return arr[0] % max;
}
function randomChar(charset) {
    return charset[randomInt(charset.length)];
}
function generateSegment(length, charset) {
    return Array.from({ length }, () => randomChar(charset)).join("");
}
/**
 * Generates a random passphrase in a UUID-inspired hyphen-separated block format (e.g. "xxxx-xxxx-xxxx-xxxx").
 * Each block uses uppercase, lowercase, digits, and symbols.
 * Retries recursively until zxcvbn score >= 3 (required by generateHash).
 *
 * @param blockLength - Characters per block (default: 4)
 * @param numBlocks - Number of blocks (default: 4)
 */
export function randomPassphrase(blockLength = 4, numBlocks = 4) {
    const segments = Array.from({ length: numBlocks }, () => generateSegment(blockLength, UPPER + LOWER + DIGITS + SYMBOLS));
    const passphrase = segments.join("-");
    if (zxcvbn(passphrase).score < PASSPHRASE_MIN_ZXCVBN_SCORE) {
        return randomPassphrase(blockLength, numBlocks);
    }
    return passphrase;
}
/**
 * Generates a random PIN of digits and lowercase letters.
 * Retries until zxcvbn score >= 1 (required by generateHash).
 *
 * @param length - Number of characters (default: 6)
 */
export function randomPIN(length = 6) {
    const pin = generateSegment(length, DIGITS + LOWER);
    if (zxcvbn(pin).score < PIN_MIN_ZXCVBN_SCORE) {
        return randomPIN(length);
    }
    return pin;
}
//# sourceMappingURL=random.js.map