gauth-decode

A NPM package to decode Google Authenticator export data

Usage

import { decodeMigrationUri } from "gauth-decode";

void decodeMigrationUri("otpauth-migration://offline?data=Ch8KBdFBKZJTEgpUZXN0IFRva2VuGgQyRkFTIAEoATACEAEYASAAKIji6ej7%2F%2F%2F%2F%2FwE%3D").then(result = console.log(result));

output:

[
    {
        algorithm: "ALGO_SHA1",
        digits: 1,
        issuer: "2FAS",
        name: "Test Token",
        secret: "0UEpklM=",
        secretBase32: "2FASTEST",
        type: "OTP_TOTP"
    }
]

Sample data

A sample TOTP QR code from 2FAS:

Contained URI data: otpauth://totp/Test%20Token?secret=2FASTEST&issuer=2FAS

The same sample data exported from Google authenticator:

Contained URI data: otpauth-migration://offline?data=Ch8KBdFBKZJTEgpUZXN0IFRva2VuGgQyRkFTIAEoATACEAEYASAAKIji6ej7%2F%2F%2F%2F%2FwE%3D and this can be decoded using this package.

Thanks to

• google-authenticator-exporter project to which the entire code is based upon.
• TypeScript NPM Package Publishing: A Beginner’s Guide

License