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jwt-auth-lib-cognito

v1.0.7

Published

`jwt-auth-lib-cognito` es una librería para verificar tokens JWT firmados por Amazon Cognito. Soporta validación de claves públicas descargadas dinámicamente desde el endpoint JWKS. Funciona tanto en aplicaciones NestJS como en proyectos JavaScript/TypeSc

Readme

jwt-auth-lib-cognito

jwt-auth-lib-cognito es una librería para verificar tokens JWT firmados por Amazon Cognito. Soporta validación de claves públicas descargadas dinámicamente desde el endpoint JWKS. Funciona tanto en aplicaciones NestJS como en proyectos JavaScript/TypeScript puros.


🚀 Características

  • Descarga automática de claves públicas (JWKS) desde AWS Cognito.
  • Cacheo de claves para alto rendimiento.
  • Compatible con aplicaciones NestJS y Node.js puro.
  • Soporte para algoritmos RS256 firmados por Cognito.
  • Validación segura y desacoplada.

📦 Instalación

Usando NPM:

npm i jwt-auth-lib-cognito

Usando YARN:

yarn add jwt-auth-lib-cognito

⚙️ Cómo usar la librería

1. En una aplicación NestJS

// auth.module.ts

import { Module } from '@nestjs/common';
import { ConfigModule } from '@nestjs/config';
import { AuthCognitoModule } from 'jwt-auth-lib-cognito';

@Module({
  imports: [
    ConfigModule.forRoot(),
    AuthCognitoModule.register({
      userPoolId: process.env.COGNITO_USER_POOL_ID!,
      region: process.env.AWS_REGION!,
    }),
  ],
})
export class AppModule {}

// controller.ts

import { Controller, Get, UseGuards } from '@nestjs/common';
import { AuthGuard } from '@nestjs/passport';

@Controller('example')
export class ExampleController {
  @UseGuards(AuthGuard('jwt'))
  @Get()
  getProtectedData() {
    return { message: 'Ruta protegida por JWT' };
  }
}

2. 🧪 Uso en JavaScript o TypeScript puro (sin Nest)

import express from 'express';
import passport from 'passport';
import { JwtStrategy } from 'jwt-auth-lib-cognito';

const app = express();

const strategy = new JwtStrategy(
  process.env.COGNITO_USER_POOL_ID,
  process.env.AWS_REGION
);

passport.use('jwt', strategy);

app.use(passport.initialize());

app.get(
  '/secure',
  passport.authenticate('jwt', { session: false }),
  (req, res) => {
    res.json({ message: 'Ruta protegida' });
  }
);

app.listen(3000);

🌐 Variables de Entorno Requeridas

Ejemplo:

COGNITO_USER_POOL_ID=us-east-1_XXXX AWS_REGION=us-east-1