Жирный текст

Exporting a login token First of all, auth.exportLoginToken must be called by the app that wants to log in to an existing Telegram account. The method will return an auth.loginToken constructor, containing a binary login token and an expiration date (usually 30 seconds).

The login token must be encoded using base64url, embedded in a tg://login?token=base64encodedtoken URL and shown in the form of a QR code to the user. After the expiration of the current QR code, the auth.exportLoginToken method must be recalled and a new QR code must be generated automatically.

Accepting a login token In order to log in, the QR code must be scanned and accepted by an already logged-in Telegram app using auth.acceptLoginToken. The token must be extracted from the tg://login URI and base64url-decoded before using it in the method.

Possible errors returned by the method are:

``\400 - AUTH_TOKEN_INVALID, AUTH_TOKEN_INVALID1, an invalid authorization token was provided``
400 - AUTH_TOKEN_EXPIRED, the provided authorization token has expired and the updated QR-code must be re-scanned 400 - AUTH_TOKEN_ALREADY_ACCEPTED, the authorization token was already used The method will return an authorization object, containing info about the app and session that we just authorized``\