GramJS

⚠️ This project is archived and no longer maintained. Development continues in teleproto, an actively maintained fork. It's largely compatible with GramJS for most projects, migration means little more than swapping the package:
npm install teleproto
See the migration guide for details.

auth.CheckPassword

Try logging to an account protected by a 2FA password.

Example

const { Api, TelegramClient } = require("telegram");
const { StringSession } = require("telegram/sessions");

const session = new StringSession(""); // You should put your string session here
const client = new TelegramClient(session, apiId, apiHash, {});

(async function run() {
  await client.connect(); // This assumes you have already authenticated with .start()

  const result = await client.invoke(
    new Api.auth.CheckPassword({
      password: new Api.InputCheckPasswordSRP({
        srpId: BigInt("-4156887774564"),
        a: Buffer.from("arbitrary data here"),
        m1: Buffer.from("arbitrary data here"),
      }),
    })
  );
  console.log(result); // prints the result
})();
import { Api, TelegramClient } from "telegram";
import { StringSession } from "telegram/sessions";

const session = new StringSession(""); // You should put your string session here
const client = new TelegramClient(session, apiId, apiHash, {});

(async function run() {
  await client.connect(); // This assumes you have already authenticated with .start()

  const result: Api.auth.Authorization = await client.invoke(
    new Api.auth.CheckPassword({
      password: new Api.InputCheckPasswordSRP({
        srpId: BigInt("-4156887774564"),
        a: Buffer.from("arbitrary data here"),
        m1: Buffer.from("arbitrary data here"),
      }),
    })
  );
  console.log(result); // prints the result
})();

Parameters

NameTypeDescription
passwordInputCheckPasswordSRPThe account's password (see SRP)

Result

auth.Authorization

Possible errors

CodeTypeDescription
400PASSWORD_HASH_INVALIDThe provided password hash is invalid.
400SRP_ID_INVALIDInvalid SRP ID provided.
400SRP_PASSWORD_CHANGEDPassword has changed.

Can bots use this method?

No

Two-factor authentication

How to login to a user's account if they have enabled 2FA, how to change password.