aws-cognito-srp-client

SRP Client for AWS Cognito UserPools SRP Auth Flow

This file can be bundled to work in browser, also works in nodejs.

Usage

Use this library in conjunction with InitiateAuth Api of Cognito

• Step 1
  Generate SRP_A

  import Srp from "aws-cognito-srp-client";
  
  const srp = new Srp(userPoolId);
  
  const srpA = srp.getA();

• Step 2 Invoke initiateAuth Api with USER_SRP_AUTH AuthFlow
  Use SPP_A generated from step 1 to pass input to initialteAuth API

• Step 3 Calculate signature and timestamp

  import Srp from "aws-cognito-srp-client";
  
  const { signature, timestamp } = srp.getSignature(
    userId,
    srpB,
    salt,
    secret,
    password
  );

  userId, srpB, salt, and secret are available in the response of initialteAuth API

• Step 4 Invoke respondToAuthChallenge Api with PASSWORD_VERIFIER ChallengeName Use signature and timestamp from step 3 to passinput to respondToAuthChallenge API.

Support

This project is a part of the Open Source Initiative from Sodaru Technologies

Write an email to [email protected] for queries on this project