puyoskey/packages/backend/src/misc/secure-rndstr.ts
2024-11-27 19:26:56 +00:00

22 lines
551 B
TypeScript

/*
* SPDX-FileCopyrightText: syuilo and misskey-project
* SPDX-License-Identifier: AGPL-3.0-only
*/
import * as crypto from 'node:crypto';
export const L_CHARS = '0123456789abcdefghijklmnopqrstuvwxyz';
const LU_CHARS = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
export function secureRndstr(length = 32, { chars = LU_CHARS } = {}): string {
const chars_len = chars.length;
let str = '';
for (let i = 0; i < length; i++) {
const rand = crypto.randomInt(0, chars_len);
str += chars.charAt(rand);
}
return str;
}