I am new to AWS Cognito. Based on description, Userpool is used for authentication. If I am a user in the userpool, I can use this user name and password to authenticate my identity. Why do I need to add App to userpool?
Thanks for help in advance,
AWS Cognito allows you to create a number of apps to integrate with your user pool. On each app, you can custom the Authentication flow, Access/Refresh token expiration, attribute read and write permissions, hostUI...
Use case: you use the same user pool for both apps but there are some custom like:
App A: just allow authentication via the ALLOW_USER_PASSWORD_AUTH and access token expiration is 5 minutes.
App B: just allow authentication via the ALLOW_USER_SRP_AUTH and access token expiration is 30 minutes.
Hope that's clear.
Related
I want to create a custom signup Authentication Flow in aws amplify cognito service
What i Have
1.Enter Username
2.Enter Password
3.Verify user with Otp (Phone Number)/Confirmation Code (email)
What i want
1.Enter Username
2.Enter Otp/Confirmation Code
3.Enter Password
How to achieve this SignUp flow using aws amplify cognito service,Else what is the best service or approach
The scenario you want is possible to do with a custom auth flow but this has some caveats:
You can't use Cognito's MFA with a custom auth flow. It's just not possible. I have an enterprise account with AWS and have raised this with our rep and it was not even in their backlog. This means you need to implement your own SMS OTP or use twilio's API for it ($).
the cognito hosted UI does not support custom auth, you will need to redo ALL the UI yourself (think reset password links etc, not just login).
since you will be making API calls, not using the hosted UI, you will lose all oauth benefits, no code grant or oauth scopes. This means you need to do a heap of extra work to get it working securely in a mobile auth session, essentially you will need to reimplement code grant with PKCE somehow.
If you want to do this you can use the custom auth flow, it's pretty complex but here is an article that helped me out when I was doing it: https://dev.to/duarten/passwordless-authentication-with-cognito-13c
My advice would be to stick with the Hosted UI if possible, or don't use Cognito. The feature set of Cognito is a lot less than other auth providers (but it's cheaper).
I have a mobile application which needs to be GDPR compliant. We're using AWS amplify and appsync, but we're unclear on how the Cognito auth token is used. Do we need to store the token in our database to associate it with users?
Our concern is that once a user is authenticated, the client will not know which userdata is associated with that identity unless we store the auth token.
You don't need to store tokens. Cognito Auth token are JWT tokens. JWT tokens can have custom payload within them. Everything you need is already included in it. You can pass literally anything like userId, phoneNumber etc... any custom data when you are issuing the tokens.
For example, if you trigger lambda with apigateway and use cognito pools for authorization you will automatically get sub etc in the claims field which you will identify user in the client (in this case client is lambda)
If you are using custom lambda authorizers you can still use cognito user pools but this time you are absolutely free to embed any custom data into token to use it later.
Play in jwt.io with your tokens and you will see whats in it already.
I have an Android app and an API secured with Auth0.
I'm developing an app for a new client, who has a large Cognito user pool.
Is it possible to use my current Auth0 setup to log in Cognito users via email/password and receive a Auth0 JWT?
I don't want to create a new Auth0 user for each Cognito user. At least not explicitly.
Thanks
If I understand you correctly, you want to use Auth0 as a service provider and AWS Cognito as an identity provider. In theory, you can use SAML protocol to achieve that. Try the following:
Configure Auth0 as SAML service provider. https://auth0.com/docs/protocols/saml/saml-sp-generic
Configure AWS Cognito AS Identity provider: https://docs.aws.amazon.com/cognito/latest/developerguide/cognito-user-pools-managing-saml-idp-console.html
Then, once you initiate the login flow in auth0, users will be redirected to AWS Cognito for user authentication. After successful user authentication, AWS should redirect the user Auth0 with SAML Assertion. In that stage, Auth0 will validate the assertion and will issue a JWT token. The user will be redirected to your application with JWT. Note that if this is the first login, auth0 will create a user profile.
https://auth0.com/docs/protocols/saml
The following AWS documentation explains how to configure auth0 as IDP.
https://aws.amazon.com/premiumsupport/knowledge-center/auth0-saml-cognito-user-pool/
I need to login users via Instagram for my mobile application so I can make calls to Instagram API and get some information from the Instagram. Simply, my application will ask user to authorize Instagram access and able to get access token for API calls. Application should not ask user to login again once the user is authorized. I already setup my Instagram client-app to implement server-side authentication flow.
My challenge is I want to do this on by using AWS mobile services. I already setup custom authentication from MobileHub and came to point where I need to define my custom authentication flow (in this case it is Instagram authentication flow). Under AWS Cognito app when I go to Triggers tab, I see different options for defining lambda functions associated with my authentication (such as pre/post auth or define / create / verify auth challenge). I am not sure how to align Instagram Authentication flow with these functions. Or should I use something else. Also I am not clear how does AWS Cognito manages authentication flow: I don't want my users to go through authorization process every time they start my application. I believe AWS Cognito link users from my custom flow to some Cognito identity and able to authenticate when they use my application. I really appreciate any suggestions, or even code sample (if available).
Check this Document for Cognito Identity. Instagram is not there by default. So you have to use External Identity Provider, most probably using Open ID Connect Providers.
I've been trying to use the authenticated code provided from Auth0 and AWS Cognito to authenticate a user but when I go to the AWS Cognito Console dashboard I see no identities have been created.
Logic flow should be this: I get my JWT from Auth0 when a user logs in and I use that to get my AWS Cognito Credentials - I use the following code:
CognitoAWSCredentials credentials = new CognitoAWSCredentials (
"us-east-1:11047a24-xxxx-xxxx-xxxx-111111111", // Identity Pool ID
Amazon.RegionEndpoint.USEast1); // Region
credentials.AddLogin("stef.auth0.com", id_token1); //id_token1 from Auth0
I did input the JWT (id_token1) into jwt.io to check the validity of it and it comes back VALID SIGNATURE when I add the Auth0 Client Secret. I am not able to see any errors when I run the code. I am using Xamarin C#. I did all the necessary setup with configuring the provider, setting up the default IAM roles for Cognito Auth/UnAuth. Put in the correct Auth0 client ID into AWS, etc... I can however add an Unauthenticated user but not an Authenticated user.
Am I using the wrong code here? Can someone point me in the right direction please?
Thank you for looking!