GramJS

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 isn't valid
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.