Cognito Refresh Token Example

An OAuth revocation URL provides a link to an external service that contains information about access or refresh tokens. Usually id tokens retire after 1 hour of time, which is a hard limit for cognito. With Safari, you learn the way you learn best. @retwedt that's correct, the session is automatically refreshed, you could technically refresh the token yourself however by doing this same approach since the amplify lib uses the cognito lib under the covers. This blog post is a summary of my interpretation and perspective of what's been going on recently with the implicit flow in OAuth2, mainly spurred on by the recent draft of the OAuth 2. js code actually works. NET Core Web API. Refresh Token is required to get a new ID Token or Access Token. • We then have to update our configuration to use the new token. A Mobile Identity Connect access token is returned to the client, along with an (optional) refresh token. Since this app is just the client, you can literally use any language/framework to write a RESTful API in. JSON Web Token (JWT) is a compact, URL-safe means of representing claims to be transferred between two parties. Put together a small tutorial on how to use refresh sessions of Cognito User with Node. These tokens are passed to back-end service to access content. The server doesn't need to store the token. Cognito UserPool. Amazon Cognito generates two pairs of RSA cryptograpic keys for each user pool. It was originally created for use by JavaScript apps (which don't have a way to safely store secrets) but is only recommended in specific situations. The square brackets [] in bearerAuth: [] contain a list of security scopes required for API calls. In this authentication mechanism, only the clients that have registered a public key, signed a JWT using that key, can authenticate. Typically, a user needs a new Access Token when gaining access to a resource for the first time, or after the previous Access Token granted to them expires. This is typically a random string of characters. In this example, they are saving the token to and loading the token from the user’s session. Client Authentication. Returned if grant_type is anything other than authorization_code or refresh_token. Your User Pool in Amazon Cognito is a fully managed user directory that can scale to hundreds of millions of users, so you don't have to worry about building, securing, and scaling a solution to handle user management and authentication. An OAuth revocation URL provides a link to an external service that contains information about access or refresh tokens. To obtain an Access Token, an ID Token, and optionally a Refresh Token, the RP (Client) sends a Token Request to the Token Endpoint to obtain a Token Response, as described in Section 3. AWS Cognito uses JSON Web Tokens (JWTs) for the OAuth2 Access Tokens, OIDC ID Tokens, and OIDC Refresh Tokens. These tokens are passed to back-end service to access content. //Create Cognito User Pool *Don't include secret //Create a user to test with * Add their details below //Create Identity Pool - *Federated Identities link on top nav of User Pools page. entered username/password are authenticated against AWS Cognito user pool, using. API Connect is involved in the initial creation and validation of tokens. The OAuth 2. 0 protocol, which allows clients to verify the identity of an end user based on the authentication performed by an authorization server or identity provider (IdP), as well as to obtain basic profile information about the end user in an interoperable and REST-like manner. 0 Introspection API, standardized as IETF OAuth 2. In this integration, a trust is created between SecureAuth IdP (the OpenID Connect Provider) and Amazon Cognito. All code examples are written in Kotlin. // Be sure to also verify that:. Amazon Cognito is the default choice for both authenticated and unauthenticated flows for all mobile apps connecting to AWS resources. When using Authentication with AWS Amplify, you don’t need to refresh Amazon Cognito tokens manually. The JWT signature is a hashed combination of the header and the payload. There is a aws-net-sdk with a helper extension, which gets all tokens (id, access,refresh). id_token will also contain "email" field as we added email scope to our request. Kong functions in a better way if we integrate our own authentication server and pass the generated tokens to kong gateway for validating them. This allows clients to continue to have a valid access token without further interaction with the user. You can find an example in this AWS Mobile blog post and the differences between developer authenticated identities and regular identities in this other blog post. Other documents were and are still being worked on within the OAuth working group. pl/public/4uunz/jlzke. Cookie("access_token") for example. Authorization applying Amazon cloud Cognito ID in Swift Posted on December 15, 2016 by cloudacademysite Amazon web services (aws) Cognito is a really elastic, cost-efficient way to authenticate end users on any platform. The refresh process is performed by invoking the authenticateWithAWS() method again in order to get a new security token. JWT ID(jti) claim is defined by RFC7519 with purpose to uniquely identify individual Refresh token. Perhaps the biggest helper for you is the example code. NET Core Web API. JSON Web Token (JWT, sometimes pronounced / dʒ ɒ t /) is an Internet standard for creating JSON-based access tokens that assert some number of claims. This grant is intended primarily for web applications. When an OAuth revocation URL is present, API Connect calls the URL to determine if the associated token can be trusted. Here is the working example that I have for you. The claims in a JWT are encoded as a JSON object that is digitally signed using JSON Web Signature (JWS). In the example above, Bearer authentication is applied globally to the whole API. In the example above, it is "JWT", meaning JSON Web Token. But, it does not include any code to make a query to an external server to get. When using JSON Web Tokens (JWTs) as Bearer tokens in your ASP. Refreshing a session with the amazon-cognito-identity-js browser SDK; it mostly does it for you, and unless you're doing something unusual you won't need to handle the refresh token directly. We will set the refresh token to 30 days, which means each login attempt will return a refresh token that we can use for authentication instead of logging in every time. I want to use Go’s standard library. cognito-auth - Example code for the article "Custom authentication using AWS Cognito" on medium. NOTE: We have discontinued developing this library as part of this GitHub repository. I have a website that uses Cognito user pools for user authentication. You can now use Amazon Cognito to easily add user sign-up and sign-in to your mobile and web apps. Home Articles AWS re:Invent 2016: Serverless Authentication and Authorization: Identity Management (MBL306). amazon-web-services,amazon-cognito. js and Express. If you are using Amazon Cognito Identity to create a User Pool, you pay based on your monthly active users (MAUs) only. html is the HTML page to call the JavaScript and display the data. Amazon Cognito Your User Pools - Now Generally Available Posted by: Admin in Amazon WS , Cloud July 28, 2016 434 Views A few months ago I wrote about the new Your User Pools feature for Amazon Cognito. which equates to £33. Place it in your project. 0 (Hardt, D. Optionally, to use other AWS services, include a build of the AWS SDK for JavaScript. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Use this guide to enable Multi-Factor Authentication and Single Sign-on (SSO) access via OpenID Connect / OAuth 2. Apps are useful because we can have multiple apps accessing the same user pool (imagine an Uber clone app, and a complimentary Driving Test Practice App). Incredibly easy to use. To refresh your memory, it can be found in the AWS User Pools console under General Settings > App clients. Client Authentication. In this part, I’m going to explain how we can use the token ID as a bearer access token in our Java Web Application. secretOrPublicKey is a string or buffer containing either the secret for HMAC algorithms, or the PEM encoded public key for RSA and ECDSA. We will now go through an example of a client obtaining an access token from an OAuth 2. 0 authorization server and a certified OpenID Connect provider. Authority is the address of the token issuing authentication server. In this tutorial we'll use jti claim to maintain list of blacklisted or revoked tokens. 0 authorization framework enables a third-party application to obtain limited access to an HTTP service, either on behalf of a resource owner by orchestrating an approval interaction between the resource owner and the HTTP service, or by allowing the third-party application to obtain access on its own behalf. Cognito and the AWS SDKs simplify all of this to a few lines of code. To obtain an Access Token, an ID Token, and optionally a Refresh Token, the RP (Client) sends a Token Request to the Token Endpoint to obtain a Token Response, as described in Section 3. Finally, the Lambda function needs to validate the token. Maximize cloud velocity for Dev, DevOps, and IT, no matter your team size. Together with my sample application, I believe the theory and examples should give you a boost in getting started with AWS Cognito. The following is showing the SRP math ported from the AWS Cognito Android SDK. All code examples are written in Kotlin. // Be sure to also verify that:. You can set arbitrary data in the token, if you want. Since this app is just the client, you can literally use any language/framework to write a RESTful API in. 0 Authorization Framework," October 2012. Learn about refresh tokens and how they fit in the modern web. Accessing AWS Services with a User pool and Identity pool You can exchange the user pool tokens that you received on successful log-in for temporary credentials with your Identity pool. Out of these tokens, the id_token is used to call the AWS Cognito Federated Identities API or SDK and get temporary IAM credentials. Input[float]) – The time limit in days refresh tokens are valid for. If you are concerned about privacy, you'll be happy to know the token is decoded in JavaScript, so stays in your browser. NET Core Web API and Angular. Because there is no such standard that defines how the refresh token or offline token should be sent to a server for verification, this parameter solves half of the puzzle by defining the parameters name where the plugin should look for the refresh token. Token authentication is quickly becoming a de facto standard for modern single-page applications and mobile apps. In this blog post I went through the most basic user flows that can be implemented against AWS Cognito. Another way preserve the tokens without having to refresh is to enable “Remember devices” in the Cognito settings. refresh_token_validity (pulumi. id_token always contains “sub” field which is a unique identifier for the user. While I constantly have to remind myself Lambda works with events, in this context I want to code against those messages as if they were incoming HTTP requests. 0 is not backwards compatible with OAuth 1. The following example authenticates a user and establishes a user session with the Amazon Cognito service. If the client is confidential it will be required to authenticate at the token endpoint. We found out that Cognito supports JWT tokens (access, id, refresh) in OAuth2 fashion. php(143) : runtime-created function(1) : eval()'d code(156) : runtime-created function. Getting the tokens on login Using t. You can find sample code in the following repos - mean-token-auth and mean-social-token-auth. In this example, the algorithm is “RS256”, which is an RSA signature with SHA-256. Its formula for success: simple JSON-based identity tokens (JWT), delivered via OAuth 2. API will then have to map it to a request body for Lambda to consume. So user log in using a log in page (this needs to be my log in page not aws). Your web or mobile app should redirect users to the following URL:. 0 authorization code grant and JSON Web Tokens. Client Authentication. Using Refresh Tokens. json is the example JSON file to represent our object. The above was the easy part and what was already present in the C# AWS Cognito SDK. JSON Web Token JWT101. js and Express. Your application should then update its record of the refresh token to be the value provided in this response, as the refresh token may change between requests. You can still reach us by creating an issue on the AWS Amplify GitHub repository or posting to the Amazon Cognito Identity forums. Use this guide to enable Multi-Factor Authentication and Single Sign-on (SSO) access via OpenID Connect / OAuth 2. 0 for Browser-Based Apps (which I will refer to here as OBBA) and the updated OAuth 2. API Connect is involved in the initial creation and validation of tokens. Refresh token is long-lived token used to request new Access tokens. */ private CognitoUserSession getCognitoUserSession(AuthenticationResultType authResult) { return getCognitoUserSession(authResult, null); } /** * Creates a user session with the tokens from authentication and overrider the refresh token * with the value passed. Cognito provides a pre-built, AWS-hosted UI, which is somewhat customizable, though it may or may not be enough for your needs. You can find sample code in the following repos - mean-token-auth and mean-social-token-auth. Tokens include three sections: a header, a payload, and a signature. Incredibly easy to use. Spring Security will already do the “dumb” part of the CSRF check and verify that the string it has stored matches the string that’s passed in exactly. Second Step: Handle Token Refresh (I) • The token provided by Google has a one-hour lifetime • after that, it expires, and Cognito can't make use of it • When we detect that it has expired, we need code that will call Google and get a new token. As has been pointed out to me in the comments, Amazon has made dramatic changes since then, and I have not been keeping up with them. Access Token the purpose of this token is to authorise operations like an update or delete user attributes. Its formula for success: simple JSON-based identity tokens (JWT), delivered via OAuth 2. 11 and to the new HttpClient; 23 May 2018 - For an updated version built with Angular 6 check out Angular 6 - JWT Authentication Example & Tutorial. This gives 100,000 users and 500,000 auth requests a month. You can still reach us by creating an issue on the AWS Amplify GitHub repository or posting to the Amazon Cognito Identity forums. In the example above, it is "JWT", meaning JSON Web Token. Getting the tokens on login Using t. Update History: 31 May 2018 - Updated to Angular 5. That would be most likely stored in some sort of configuration. The refresh token enables your application to obtain a new access token if the one that you have expires. The tokens are automatically refreshed by the library when necessary. Amazon Cognito user pool tokens overview Access token • JSON web token • Used to authorize requests, including APIs • Includes • OAuth scopes • Amazon Cognito groups • Expires in 1 hour Identity token • JSON web token • Can be used for authentication • Includes user profile information • Attributes • Amazon Cognito groups. As such, if your application loses the refresh token, the user will need to repeat the OAuth 2. Another way preserve the tokens without having to refresh is to enable “Remember devices” in the Cognito settings. Amazon Cognito generates two pairs of RSA cryptograpic keys for each user pool. 0 to Amazon Cognito. Learn More. JWT and OAuth are more specific. If the client is confidential it will be required to authenticate at the token endpoint. TOKENS Base for access on secured resources. While I constantly have to remind myself Lambda works with events, in this context I want to code against those messages as if they were incoming HTTP requests. For example: REFRESH_TOKEN_AUTH will take in a valid refresh token and return new tokens. It contains the new access token, refresh token, and scopes associated with the new grant. This is an issue because i have a lot of async calls to my api so if i refresh a token while the next async call is in progress wouldn't it invalidate those request token. The server doesn't need to store the token. JWT tokens include three sections: a header, payload, and signature. This can be accomplished by caching access tokens and reusing them (across threads/users/etc) until they expire, or limiting the number of tokens your application generates for simultaneous use to say 15 or 20. These tokens are passed to back-end service to access content. 0 flows designed for web, browser-based and native / mobile applications. The authentication process gives us a set of access and refresh tokens as a result, but we don’t need them for anything on the server side. In this tutorial we'll use jti claim to maintain list of blacklisted or revoked tokens. So when Google writes “ If the limit is reached, creating a new token automatically invalidates the oldest token without warning ”, that shouldn’t be a problem. You can authenticate a user to obtain tokens related to user identity and access policies. A Refresh Token contains the information required to obtain a new Access Token or ID Token. Authorization code has been consumed already or does not exist. The OAuth 2. The refresh_token from the Cognito response is being stored in a session variable. Learn about refresh tokens and how they fit in the modern web. The authorization parameters, AuthParameters, are a key-value map where the key is "REFRESH_TOKEN" and the value is the actual refresh token. Out of these tokens, the id_token is used to call the AWS Cognito Federated Identities API or SDK and get temporary IAM credentials. Stackery can make all this a lot easier. NET Core Web API. 0 grants, this grant is suitable for machine-to-machine authentication where a specific user's permission to access data is not required. When you obtain an access token, you will also receive a refresh token. For more information on this head over to the developer guide. 0's authorization code grant flow to issue access tokens on behalf of users. JWTs can be used wherever you need a stand. The refresh token enables your application to obtain a new access token if the one that you have expires. With Amazon Cognito, developers can synchronize data across devices, allowing for application experiences that follow the user as they move from phone to tablet to PC. Stay ahead with the world's most comprehensive technology and business learning platform. Some servers will issue tokens that are a short string of hexadecimal characters, while others may use structured tokens such as JSON Web Tokens. The following is the header of a sample ID token. Okta is a standards-compliant OAuth 2. The authorization parameters, AuthParameters, are a key-value map where the key is "REFRESH_TOKEN" and the value is the actual refresh token. Your Refresh Token can be used along with the Access Token, and the Id Token to obtain a valid user session. Input[float]) - The time limit in days refresh tokens are valid for. AppAuth is a client SDK for native apps to authenticate and authorize end-users using OAuth 2. This post is not going to cover Cognito itself. If you are new to Android native app development, these resources will help you get. Please make sure to replace >INSERT-TOKEN-HERE< with the token you just received. Solving the OAuth issue for testing. AFAIK there's no timing mechanism to update your localStorage for you in the background. Take Facebook for example, where a refresh token is issued every day, so the main token has a TTL of 60 days and gets refreshed every day. Do I use AWS SDK for Javascript in Fitbit OS, or are there any other (better/easier) alternatives? Im specially thinking on challange step and token refresh. Luckily, there is a great example for us. Server-side Authentication with Amazon Cognito IDP This post was written at the end of 2016. Your Refresh Token can be used along with the Access Token, and the Id Token to obtain a. Maximize cloud velocity for Dev, DevOps, and IT, no matter your team size. Solving the OAuth issue for testing. Posted February 4, 2016 by Kevin Dockx. over 2 years Login tokens after successful user signup confirmation; over 2 years When will session. GET /users/username/account HTTP/1. refresh-jwt. js Can't we get the tokens again with refresh token only?. Optionally, to use other AWS services, include a build of the AWS SDK for JavaScript. AWS Cognito User Pool Access Token Invalidation Since the integrated tools in AWS Cognito aren't enough to invalidate a token once a sign out has been triggered, here's a helpful workaround. js code actually works. Solutions for All Teams and Engineers. id_token will also contain “email” field as we added email scope to our request. Amazon Cognito returns three tokens: the ID token, access token, and refresh token—the ID token contains the user fields defined in the Amazon Cognito user pool. id_token always contains "sub" field which is a unique identifier for the user. In general, simply getting rid of the access token on the client side should be enough. We only get a refresh token on first authorization and, if for some reason, Google throws us a new refresh token, we make sure to use that one in the future. Amazon Cognito is an extremely elastic, cost-efficient approach to validate end users from any platform. ts (example). Authorization code has been consumed already or does not exist. In the example above, we used the decodeAndVerify() method of JwtHelper to extract information from the id_token, but also to validate it. js and Express. AWS Cognito User Pool Access Token Invalidation Since the integrated tools in AWS Cognito aren't enough to invalidate a token once a sign out has been triggered, here's a helpful workaround. The Google+ activities. Amazon Cognito is an extremely elastic, cost-efficient approach to validate end users from any platform. Using Amazon Cognito Federated Identities, you can enable authentication with one or more third-party identity providers (Facebook, Google, or Login with Amazon) or an Amazon Cognito user pool, and you can also choose to support unauthenticated access from your app. It's a nice token-based auth module for Angular. A Refresh Token contains the information required to obtain a new Access Token or ID Token. Offline support: AWSMobileClient is optimized to account for applications transitioning from offline to online connectivity, and refreshing credentials at the appropriate time so that errors do not occur when actions are taken. (With SAML you get the sometimes confusing bonus of using the same moniker for the tokens and the protocol naming wise. 0 authorization code grant and JSON Web Tokens. If you’ll remember, in the User Pool setup, we can choose email or phone validation. 0 authorization framework enables a third-party application to obtain limited access to an HTTP service, either on behalf of a resource owner by orchestrating an approval interaction between the resource owner and the HTTP service, or by allowing the third-party application to obtain access on its own behalf. For a concrete example of how to build an application that uses AWS Cognito for authentication, check out my sample application on Github. Your web or mobile app should redirect users to the following URL:. NET Core Web API and Angular. So when Google writes “ If the limit is reached, creating a new token automatically invalidates the oldest token without warning ”, that shouldn’t be a problem. JSON Web Token (JWT) is a compact URL-safe means of representing claims to be transferred between two parties. Learn about refresh tokens and how they fit in the modern web. Client is not allowed for code grant flow or for refreshing tokens. The user pools (basic auth) refresh token is developer specific from 1 day to 365 days. This request initiates the authorization code flow as signaled by response_type=code. Cognito UserPool. Cognito Identity Pool (or Cognito Federated Identities) on the other hand is a way to authorize your users to use the various AWS services. Refresh token has been revoked. So the last important bit for our application is adding a client application which will be using Cognito in order to authenticate its users. For the Js identity Sdk (the core user pools library) to interact with the user management and authentication functions in the Amazon Cognito User Pools API, see Cognito - Javascript Identity Sdk (amazon-cognito-identity-js). Examples: "refresh_token" "X-Refresh-Token" "Offline-Token" config. An OAuth revocation URL provides a link to an external service that contains information about access or refresh tokens. This function is called when the user is signed out or the refresh token has expired for the user. If you are concerned about privacy, you'll be happy to know the token is decoded in JavaScript, so stays in your browser. user_pool_id (pulumi. Even though the examples will be in PHP, it should be very easy to translate the examples for use with SDKs in different languages. In our example, we simply store the username, user ID and user roles in the token. When you obtain an access token, you will also receive a refresh token. It's expiration time is greater than expiration time of Access token. Solving the OAuth issue for testing. Apps are useful because we can have multiple apps accessing the same user pool (imagine an Uber clone app, and a complimentary Driving Test Practice App). Include all of the files in your HTML page before calling any Amazon Cognito Identity SDK APIs:. Examples: "refresh_token" "X-Refresh-Token" "Offline-Token" config. Access tokens will expire after a set time period (normally returned in the expires_in parameter). Now that we've got the general setup out of the way in part 1, it's time to dig into how the cognito. Read on for a complete guide to building your own authorization server. You'll have to do this yourself as cognito-express doesn't handle this part. Parsing of the token is used in the AuthenticationProvider as shown above. From the command prompt we can simply invoke http-server. The following snippet shows a sample response:. AWS Quicksight is one of the most powerful Business Intelligence tools which allows you to create interactive dashboards within minutes to provide business insights into the organizations. Types • ID Token • JWT • OpenID Identity Information (name, phone_number, etc) • Access Token • JWT • No Identity Information • Used for further authorizations • Refresh Token • String • Refresh Amazon Cognito Identity session 36. Cloud SPA - Key Technical Points - OAuth 2 0 Architecture Guidance. Authorization applying Amazon cloud Cognito ID in Swift Posted on December 15, 2016 by cloudacademysite Amazon web services (aws) Cognito is a really elastic, cost-efficient way to authenticate end users on any platform. API will then have to map it to a request body for Lambda to consume. For the Js identity Sdk (the core user pools library) to interact with the user management and authentication functions in the Amazon Cognito User Pools API, see Cognito - Javascript Identity Sdk (amazon-cognito-identity-js). We could also store more arbitrary stuff and add more security features, such as the token's expiration. Cookie("access_token") for example. SigInActivity - This file is the duplicate of the AWS Mobile Auth UI SigInActivity. Nativescript authentication. Very nice example. In this integration, a trust is created between SecureAuth IdP (the OpenID Connect Provider) and Amazon Cognito. For example, I have a requirement to access the user’s full profile under certain conditions. 1 Authorisation code flow example. OpenID Connect compliance. js Can't we get the tokens again with refresh token only?. Infinitely flexible. ID Token(Authenticationの連携に用いられる?少なくとも、Cognito Federated IdentitiesのGetId API及びGetOpenIdToken APIの実行時には必要。) Access Token(※これがAuthorization:ヘッダとして指定される) Refresh Token; Cognito Federated Identities. In this part, I’m going to explain how we can use the token ID as a bearer access token in our Java Web Application. user_pool_id (pulumi. The token you need to inspect. Amazon Cognito responds with new ID and access tokens. 0 authorization framework enables a third-party application to obtain limited access to an HTTP service, either on behalf of a resource owner by orchestrating an approval interaction between the resource owner and the HTTP service, or by allowing the third-party application to obtain access on its own behalf. In this example, the access token is:. After signing in the Cognito user is automatically saved to local storage and can be retrieved via the getCurrentUser call and used through out the application. That would be most likely stored in some sort of configuration. Amazon Cognito generates two pairs of RSA cryptograpic keys for each user pool. Returned from the Spotify account service. The API action will depend on this value. This is typically a random string of characters. Server-side Authentication with Amazon Cognito IDP This post was written at the end of 2016. POST /oauth2/token. Use this guide to enable Multi-Factor Authentication and Single Sign-on (SSO) access via OpenID Connect / OAuth 2. Refresh token is long-lived token used to request new Access tokens. 1 Host: example. Decode the ID token. Accessing AWS Services with a User pool and Identity pool You can exchange the user pool tokens that you received on successful log-in for temporary credentials with your Identity pool. Google OAuth 2 - How to get refresh token using Xamarin. In this tutorial, we get specific and address how to obtain an access token for native Android application. So in our scenario, lets say 50% of users use the app for 10 different days a month. Getting the tokens on login Using t. Cognito provides a pre-built, AWS-hosted UI, which is somewhat customizable, though it may or may not be enough for your needs. 0 authorization code grant and JSON Web Tokens. You can still reach us by creating an issue on the AWS Amplify GitHub repository or posting to the Amazon Cognito Identity forums. Nativescript authentication. The user pool client makes requests to this endpoint directly and not through the system browser. js file from the dist folder. NET Core authentication server and then validating those tokens in a separate ASP. ID Token(Authenticationの連携に用いられる?少なくとも、Cognito Federated IdentitiesのGetId API及びGetOpenIdToken APIの実行時には必要。) Access Token(※これがAuthorization:ヘッダとして指定される) Refresh Token; Cognito Federated Identities. I'll go through setting up an API that calls a Lambda function and a Cognito user pool that is used to authorize calls to that API. Server-side Authentication with Amazon Cognito IDP This post was written at the end of 2016. For Developers → Your favorite languages, tools, and libraries. The response contains an access token, id token and refresh token, each encoded as a JSON Web Token (JWT). refresh_token a refresh token that can be used to acquire a new access token when the original expires Client credentials grant ( section 4. With Amazon Cognito, developers can synchronize data across devices, allowing for application experiences that follow the user as they move from phone to tablet to PC. We found out that Cognito supports JWT tokens (access, id, refresh) in OAuth2 fashion. For example, a typical OpenID Connect compliant web application will go through the /oauth/authorize endpoint using the authorization code flow. @retwedt that's correct, the session is automatically refreshed, you could technically refresh the token yourself however by doing this same approach since the amplify lib uses the cognito lib under the covers. To verify the signature of a JWT token. For example, a server could generate a token that has the claim "logged in as admin" and provide that to a client. Just copy it and adjust to taste. Home Articles AWS re:Invent 2016: Serverless Authentication and Authorization: Identity Management (MBL306). I looked the GitHub repository and docs but didn't find any way to refresh the tokens on android if they expire which the app is running. refresh_token_validity - (Optional) The time limit in days refresh tokens are valid for. ProviderName (string) -- The name of the provider, for example, Facebook, Google, or Login with Amazon. Instead of signing users out when the access_token expires, you can exchange the refresh_token for id_token and access_token. Using the refresh you obtained earlier you can get a new id_token, access_token with this rather than logging in.