Refresh Token Usage Identityserver4

Demonstrates how to get an OAuth2 access token using the client credential flow with IdentityServer4. 2 For projects that support PackageReference , copy this XML node into the project file to reference the package. When the id_token expires, the client requests new tokens from the server, so that the user does not need to authorise again. In my last post, I discussed how to setup JWT's in ASP. The use of Refresh Tokens to extend access tokens is a subject matter for which there's not much information available. If you do not get back a new refresh token, then it means your existing refresh token will continue to work when the new access token expires. I understand that one of the features of IdentityServer4 is that it has the ability to create JWT tokens with-in, so that is what I want to do. The following code shows a refresh token flow:. 0 authorization [] flows to access OAuth protected resources, this specification actually defines a general HTTP authorization method that can be used with bearer tokens from any source to access any resources protected by those bearer tokens. When I remove following lines, the refresh works. 2018-12-08 13:17:32. The last item is the same idea, except it applies to "confidential. Absolute the refresh token will expire on a fixed point in time (specified by the AbsoluteRefreshTokenLifetime) Sliding when. How to configure IdentityServer4 to use EntityFramework Core with SQL Server as the storage mechanism. # pacman -Syuw Remove the ca-certificates. refresh tokens). Trying to better. The most popular use of a refresh token is during the execution of a cron job at the server. After an hour, your access token is no longer any good and you need to get a new one using your refresh token. Net Core Web API with IdentityServer4 (Resource Owner flow); using SQL Server db, enabling refresh tokens and external login - Part 1. refresh and reference tokens in memory only. So, for example, if your access token has expired, but its refresh token has not yet expired, you can use them to generate a new set of tokens (refresh tokens). Identityserver4中ResourceOwnerPassword 模式获取refreshtoken. To use your refresh token you will need to make use of the Refresh Token Grant. If your service issues refresh tokens along with the access token, then you'll need to implement the Refresh grant type described here. We have an overload for LoginAsync which additionally accepts the access token (as part of a JSON object, under the key "access_token"). To simplify this token refresh experience, we recently baked Auth 2. NET as your web platform and are looking to expand it to another platform such as mobile applications, and need to authenticate users from that external application, one of the best ways of going about it is through the use of OAuth Bearer Tokens. Some of the reasons a refresh token may no longer be valid include:. Learn to use any Web API - Part 2;. IdentityServer4 comes built in with JWT support, for the Angular part we will use the angular-jwt package from auth0 to handle the JWT decoding. Hi, As you guessed, refreshing data with OAuth2 authentication is not yet supported in Power BI. Specifies if this client can use local accounts, or external IdPs only. The work is based on IdentityServer4 Tutorial - Part 2: Resource Owner Password Grant Type. NET Core access_token is stored in AuthenticationProperties wich also stores access_token in cookie, as far as i understand. I assume that you're asking what the "provider" -- the server that receives the API calls -- needs to do, and not what the client who makes the API calls does. Should we now store the Refresh Token going fowrad, and use that to generate hour-long. The work is based on IdentityServer4 Tutorial - Part 2: Resource Owner Password Grant Type. You can renew an access token using a refresh token, by a REST call with below curl command. dotnet add package IdentityServer4 --version 3. EnableLocalLogin. IdentityServer is a free, open source OpenID Connect and OAuth 2. Include Refresh Token:. The grant is a recognised credential which lets the client access the requested resource (web API) or user identity. NET Core Web Api. Refresh tokens are valid for 14 days, and with continuous use, they can be valid up to 90 days. 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. The SPA Angular client implements the OpenID Connect Implicit Flow ‘id_token token’. Since I am receiving an access token, but no refresh token, and since ADFS currently only implements OAuth's code flow, my guess is the ADFS team chose not to return refresh tokens. 2 The role of cookies. Refresh Tokens. Please share the endpoint for refreshing the access token using the Refresh Token. More resources Refreshing Access Tokens (oauth. Some of the reasons a refresh token may no longer be valid include:. Let's have a look. The most popular use of a refresh token is during the execution of a cron job at the server. A Refresh Token allows the application to ask Auth0. Use your refresh token to rotate and refresh your access token with no downtime. And a sample code to renew token by an action And i end up with the following code in the startup. (Excel) OAuth2 Token using IdentityServer4 with Client Credentials. Gavril Ognjanovski. This example shows how a simple web application (using the Flask web framework ) can refresh Google OAuth 2 tokens. Turns out that rather than round-tripping back to same IdentityServer4 instance over the network to get that token, there is a more efficient and quicker way to do it. If you face any issue while implementing authentication with Angular 2 apps and ASP. We have an overload for LoginAsync which additionally accepts the access token (as part of a JSON object, under the key "access_token"). However you can use the IdentityModel package to request a new access_token with a refresh_token. Everything you ever wanted to know about token authentication in ASP. Once you have authenticated a user, include an authorization parameter or header containing a valid access_token in every request. The Java library doesn’t support reference access_tokens so we’re trying to understand our options in supporting revoking using JWT access_tokens. Just a heads up that there is an option to just use a static token in our upcoming version 3. Fortunately, OAuth comes with an awesome idea called refresh tokens. Ask Question refresh token in local storage is the way to go. In this tutorial we will add an IPersistedGrantStore implementation to store refresh tokens in Cosmos DB. I understand that one of the features of IdentityServer4 is that it has the ability to create JWT tokens with-in, so that is what I want to do. I would love to hear this definitively though. When you have a valid refresh token and want to make authenticated API calls to Google, you will not be able to directly use the refresh token to make API calls. refresh_token: A token that you can use to obtain a new access token. In my last post, I discussed how to setup JWT's in ASP. A question regarding resource api authorization. or later versions to keep app users. A refresh token with a longer lifetime is also provided. The client library for the token endpoint (OAuth 2. Please contact its maintainers for support. About David Vicente. Refresh tokens are supported for the following flows: authorization code, hybrid and resource owner password credential flow. Furthermore, with the use of refresh tokens we improve the security and usability of this architecture. The grant is a recognised credential which lets the client access the requested resource (web API) or user identity. 0》 上面这篇文章虽然详细,但都是点到为止的介绍,并没有实际应用的示例,所以,后面在真正去实现的时候,踩到了自己之前种下的很多坑。. Typically developers have some questions over the usage of Google refresh tokens. The Client has a property AllowOfflineAccess which you should set to true in the IdentityServer. Note that the access token validation endpoint from IdentityServer 3 is no longer available in IdentityServer 4. The grant is a recognised credential which lets the client access the requested resource (web API) or user identity. At this time we are using access tokens that require the login/consent in an automated manner however we need the capability to use refresh tokens. Refresh Token Rotation. Revoke refresh tokens. Applies to: Machine Learning Server, Microsoft R Server 9. 一、IS4服务端配置 二、客户端获取access_token+refresh_token. Ask Question refresh token in local storage is the way to go. 0 User A user is a human that is using a registered client to access resources. The only issue was that a consumer of IdentityServer4 was attempting to use ValidationEndpoint to validate tokens, when using the IdentityServer3. In this episode, we look at the backend for frontend, and the changes required for it to handle the users authentication, redirection to the identity provider (the IdentityServer4 powered auth service), the inclusion of an access token when making API calls, the refresh of said token and handling CSRF tokens. Not all OAuth servers support refresh tokens. NET Core Web Api. Some features such as session management is not implemented yet. 0 framework for ASP. Refresh Tokens¶. Fortunately, OAuth comes with an awesome idea called refresh tokens. Note that the access token validation endpoint from IdentityServer 3 is no longer available in IdentityServer 4. A sample request is shown below in curl format. AspNetIdentity. 0 authorization server. refresh tokens). There is not a build in system to refresh the access_token. IdentityModel. NET Web API, ask me in the comments. NET core web applications and APIs using modern-day standards like OAuth2 and OpenID Connect. Should we now store the Refresh Token going fowrad, and use that to generate hour-long. Note: While writing this article, IdentityServer4 is in Beta. The code I am using to generate the access. AcquireTokenByRefreshToken. Our application interacts with our clients' Salesforce instances using the REST API and refresh tokens we have stored on our database. Access tokens sure do expire, as per the RFC. This section describes how to allow your developers to use refresh tokens to obtain new access tokens. This refresh protocol is important in the situation of a compromised system. The size of third-party tokens must be 2 KB or smaller. If an attacker was able to get the refresh token they'd be able to get more access tokens at will until such time as the OAuth server revoked the authorization of the client. Typically, refresh tokens are long-lived, whereas access_tokens are short lived. I've done that because i use MVC 3, and have not access to HttpContext. This change won't apply to your tenant if you configured Refresh Token Max Inactive Time to a custom value. Defaults to. 0) OAuth2 Token using IdentityServer4 with Client Credentials. Though that was specifically for when using the JWT middleware, you could also use that technique when using the OIDC middleware. Typically developers have some questions over the usage of Google refresh tokens. Furthermore, with the use of refresh tokens we improve the security and usability of this architecture. - [Instructor] Two tokens form the foundation of OAuth. So I think I must have something setup incorrectly with regards to refresh tokens. Each Client should have Client Id and Secret, usually we can obtain the Client. We'll use IdentityServer4 throughout the course starting with integrating it with an ASP. Most of the stuff out there was to perform account linking with Amazon's own OAUTH server, and not IdentityServer4. 0 Bearer Token Usage October 2012 resulting from OAuth 2. Since access tokens have finite lifetimes, refresh tokens allow requesting new access tokens without user interaction. Then the other refresh token settings can be set as required. When the id_token expires, the client requests new tokens from the server, so that the user does not need to authorise again. IdentityServer provides an implementation of the OAuth 2. Token Endpoint¶. Machine Learning Server, formerly known as Microsoft R Server, uses tokens to identify and authenticate the user who is sending the API call within your application. Specifies whether the access token is a reference token or a self contained JWT token (defaults to Jwt). There are many SaaS services such as Auth0, Stormpath and Login Radius that are pretty easy to set up. At this time we are using access tokens that require the login/consent in an automated manner however we need the capability to use refresh tokens. # pacman -Syuw Remove the ca-certificates. EnableLocalLogin. If you don't use refresh tokens, you can skip the middle step, obviously. When an access token expires it will use the refresh token to renew itself. If a user uses a mobile app every fifteen minutes during 12h he/she will still be logged off after approximately 9h even though the app is frequently used. NET Core Web Api. The easiest answer is to make sure each data request is authenticated with tokens received from an identity framework. We use cookies to give you the best experience on our website. Net MVC app. Access_tokens generally have a short lifespan. It’s important to know that you can use your design tokens without it, but this just adds a little automation to the process if you want to be fancy. Refresh tokens are used to generate additional access tokens. EnableLocalLogin. 0 authorization [] flows to access OAuth protected resources, this specification actually defines a general HTTP authorization method that can be used with bearer tokens from any source to access any resources protected by those bearer tokens. Commit Score: This score is calculated by counting number of weeks with non-zero commits in the last 1 year period. A question regarding resource api authorization. (Excel) OAuth2 Token using IdentityServer4 with Client Credentials. This token contains info about the client and the user (if any). A refresh token is returned with the access token when exchanging an authorization code as part of the two-step and three-step OAuth processes, and it can be used as long as the access token remains active. Until refresh tokens can be bound to both a client application and that individual session (maybe token binding or mutual TLS?), then I’m sticking with silent refresh. NET Core Web Api. If you need a better refresh support, and if you are using the. If successful, we'll receive the claims in that token echoed back to us. At last , Create a console app to test the refresh token. 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. Let's have a look. Fortunately, OAuth comes with an awesome idea called refresh tokens. I'm using the same python script everytime, and I only call the function once. Once an access token has expired, you will need to use the refresh token to obtain a new access token and a new refresh token. I assume that you're asking what the "provider" -- the server that receives the API calls -- needs to do, and not what the client who makes the API calls does. The client would retry the request that failed before. (Visual Basic 6. This blog post describes how you can extend JWT tokens using refresh tokens in an ASP. The use of Refresh Tokens to extend access tokens is a subject matter for which there's not much information available. That will return a JSON document with the new token and a new refresh token. I've implemented a custom PersistedGrantStore storing my refresh tokens in a xml file, however I now have problems refreshing my tokens. Token issuance from IdentityServer4 won’t yet be functional, but this is the skeleton of how IdentityServer4 is connected to our ASP. In this example we want to use IS4 to issue an access token to our client who must then present that token to the API. When the access token expires, a refresh token (which would be cached on the Client) can be used to obtain a new access token. The grant type ResourceOwnerPasswordAndClientCredentials is configured in the GetClients method in the IdentityServer4 application. 32 Refresh Tokens 109 IdentityServer4 is an OpenID Connect and OAuth 2. You can use this technique if you would like to configure Apigee Edge to validate tokens that are generated outside of Apigee Edge. 2018-12-08 13:17:32. An access token has an expiration time (based on the expires_in value) after which the token is no longer valid. 0 grants, this grant is suitable for machine-to-machine authentication where a specific user's permission to access data is not required. Now we will implement this by using oAuth2. Let’s have a look. Make sure to protect this file. 0 framework for ASP. Hi, As you guessed, refreshing data with OAuth2 authentication is not yet supported in Power BI. The refresh token is used to get a new access token without the user interaction. Clients typically use the refresh_token to obtain a new access token without the need for the user to authenticate again. NET client web app - calling a REST API. So, for example, if your access token has expired, but its refresh token has not yet expired, you can use them to generate a new set of tokens (refresh tokens). To refresh our access token, we can use a refresh token to acquire a new access token from our Security Token Service. In my last post, I discussed how to setup JWT's in ASP. 2018-12-08 13:17:32. Full Curriculum Why JavaScript? How it works Real Results Pricing Login Join Now. Before reading on, I wanted you to know that I created a working sample for you just in case my explanation wasn't adequate. Applies to: Machine Learning Server, Microsoft R Server 9. Get and Use the Refresh Token from the Cookie. Refresh token grant. Token issuance from IdentityServer4 won't yet be functional, but this is the skeleton of how IdentityServer4 is connected to our ASP. 一、IS4服务端配置 二、客户端获取access_token+refresh_token. Note that the access token validation endpoint from IdentityServer 3 is no longer available in IdentityServer 4. RFC 6750 OAuth 2. I've done that because i use MVC 3, and have not access to HttpContext. A refresh token will be returned with the JWT when the user logs in. Refresh tokens are supported for the following flows: authorization code, hybrid and resource owner password credential flow. In the new version, the token can be retrieved from the HTTP context instead of using the DiscoveryClient and TokenClient like the previous version of this code did. DSM API 👾 This resource is the only documentation out there for DSM’s API. One option is to use the (documented for IS3) Access token validation endpoint - but it's not clear if this is supported for IS4 - and has the shortcoming of not validating refresh tokens. It’s important to know that you can use your design tokens without it, but this just adds a little automation to the process if you want to be fancy. Each Client should have Client Id and Secret, usually we can obtain the Client. 0 framework for ASP. Specifies if this client can use local accounts, or external IdPs only. Our app will use the private key from the pfx to sign tokens. It implements the token revocation specification. ReUse the refresh token handle will stay the same when refreshing tokens. In this course, you'll learn how to secure your ASP. This allows checking if the refresh token is still valid, or has been revoked in the meantime. For SAML token usage, check out my older article which talks about adding WS-Federation support to IdentityServer4. 2 hours ago · The latest Tweets from IMDb (@IMDb). The Java library doesn’t support reference access_tokens so we’re trying to understand our options in supporting revoking using JWT access_tokens. NET Core app. Get and Use the Refresh Token from the Cookie. Once a new refresh token is returned, the older refresh token is invalidated immediately. In this section I'm going to explain how we can use IdentityServer4 to not only secure our API, but also our Asp. Since access tokens have finite lifetimes, refresh tokens allow requesting new access tokens without user interaction. You might revoke a user's existing refresh token when a user reports a lost or stolen device. Advanced usage of authentication and authorization in Azure App Service. Manage access tokens for API requests. So I think I must have something setup incorrectly with regards to refresh tokens. This token is ephemeral, never stored in a database in any way. Access_tokens generally have a short lifespan. The refresh token itself can last up to 100 days before it expires, and then the user needs to sign in and grant consent again or you can get a new one programmatically using the Refresh Token API before the 100-day refresh token expires. Workspace refresh token strings begin with xoxr. Refresh Token Overview. I’ve updated the GitHub repository for my existing article to use authorization code and PKCE. I selected IdentityServer4 as the tool to use and based my effort on the 'combined' example published by the IdentityServer4 team using EntityFramework published on Github. This article shows how to implement a silent token renew in Angular using IdentityServer4 as the security token service server. come to mind here. The /oauth2/token endpoint only supports HTTPS POST. IdentityServer4 – Part 4 – Refresh Tokens By Rami Hamati | 0 comment Refresh tokens contain the information required to obtain a new access_token or Id Token They are subjected to strict storage requirements to ensure that they are not leaked Since they do not expires, you should Read more. Because in that way if one access_token is compromised it's only compromised until the next refresh :) I've now found out that refresh_token's are only issued to those requesting offline scope/permissions. Enter the access token type. a JSON web token is very useful when you are developing cross-device authentication mechanism. When we call the revoke method in Identity server it revokes the access. To use a refresh token, you send an API token request with a grant type of refresh_token with the refresh token value from the original token request. It enables the following features in your applications:. Refresh tokens are good for 30 days and are renewed at the end of that period. After some research I have found that this problem can be fixed with the introduction of a Refresh Token, which will enable the user to be logged in for longer. Revoke refresh tokens. Is there a way to extend the lifetime of a refresh token beyond the 14 days?. Specifies whether the access token is a reference token or a self contained JWT token (defaults to Jwt). For example, a cron script would use the refresh token to generate a Google Analytics report for the user at a specific time. Refresh tokens are used to generate additional access tokens. The client sends a POST request with following body parameters to the authorization server: grant_type with the value refresh_token; refresh_token with the refresh token. What I'm struggling With is using token helper from a console app, I get 400 Bad Request. AccessTokenType. Here is the flow:. com Head>. The additional refresh token that was transmitted by the login protocol allows the application to obtain a new access token after it expires. To simplify this token refresh experience, we recently baked Auth 2. 287 -05:00 [Error] Invalid refresh token 2018-12-08 13:17:32. One frustration of the MFA module for connecting to Exchange Online is its inability to use the refresh token it gets from Azure AD. Demonstrates how to get an OAuth2 access token using the client credential flow with IdentityServer4. 287 -05:00 [Error] Refresh token validation failed. #- [ ] I read and understood how to enable logging Note that my client is setup for multiple refreshes of the token. The code I am using to generate the access. Has anything changed since 11/28/2018 supporting refresh. Refresh tokens have a much longer expiration time than access\_tokens and as such can be used to obtain a new access\_token when the current one expires. Hi Matt, thank you for your answer. When the access token expires, a refresh token (which would be cached on the Client) can be used to obtain a new access token. Once an access token has expired, you will need to use the refresh token to obtain a new access token and a new refresh token. Access token contains the information about the client & user and use to access the APIs; Resources are all those important data which are protectable - like the user details, passwords, Fingerprints, Voice phrases of the user, APIs etc; IdentityServer4 is our hero here - IdentityServer4 is used to issue the security tokens to clients. AccessTokenType. I would love to hear this definitively though. Get and Use the Refresh Token from the Cookie. A typical reason for refreshing a token is that the original access token has expired. There is not a build in system to refresh the access_token. To use a refresh token, you send an API token request with a grant type of refresh_token with the refresh token value from the original token request. Remember-Me Functionality with Refresh Tokens. IdentityServer Overview. Local Login. By default refresh token is valid for 8h. … When you make a request to an API, … you use the access token. When you make the API call to refresh, the API send back both a new access token and a new refresh token. Client A client is a piece of software that requests tokens from IdentityServer - either for authenticating a user (requesting an identity token) or for accessing a resource (requesting an access token). If successful, receive Authorize Code and exchange it for Refresh and Access Tokens; Store refresh token for future use and use Access Token to communicate to server app; Step b - Initiate Authorize request in Browser control. Identity, Claims, & Tokens - An OpenID Connect Primer, Part 1 of 3 Micah Silverman In the beginning, there were proprietary approaches to working with external identity providers for authentication and authorization. We'll use IdentityServer4 throughout the course starting with integrating it with an ASP. NET Core app. NET Core Web API and Angular. Using refresh token, we can use a short lifetime for our access token, and use it to renew it. 2 hours ago · The latest Tweets from IMDb (@IMDb). It enables the following features in your applications:. This allows checking if the refresh token is still valid, or has been revoked in the meantime. 之前写了一篇文章:《IdentityServer4 实现 OpenID Connect 和 OAuth 2. As a last step simply select the package and click install. Clients obtain identity and access tokens from the token endpoint in exchange for an OAuth 2. Specifies if this client can use local accounts, or external IdPs only. The easiest answer is to make sure each data request is authenticated with tokens received from an identity framework. Since access tokens have finite lifetimes, refresh tokens allow requesting new access tokens without user interaction. I selected IdentityServer4 as the tool to use and based my effort on the 'combined' example published by the IdentityServer4 team using EntityFramework published on Github. The use of tokens for authentication is useful in a large number of projects, but it is not the Holy Grail that solves all problems or serves for all products, but we must take it into account when proposing any solution. or later versions to keep app users. NET client web app - calling a REST API. One option is to use the (documented for IS3) Access token validation endpoint – but it’s not clear if this is supported for IS4 – and has the shortcoming of not validating refresh tokens. Another benefit of refresh tokens is that it allows revoking the access token, and not sending another one back if the user displays unusual behavior such as logging in from a new IP. If you do not get back a new refresh token, then it means your existing refresh token will continue to work when the new access token expires. 0 and OpenID standards and how we can create a centralized IdentityServer which supports multiple applications such as Web, Mobile, WebApi Etc. I've updated the GitHub repository for my existing article to use authorization code and PKCE. So,what is IdentityServer4 ? IdentityServer4 is an OpenID Connect and OAuth 2. Token Endpoint¶. After a user authenticates and receives a new refresh token, the user can use the refresh token flow for the specified period of time. You can use the refresh token to refresh an expired access token. This section describes how to allow your developers to use refresh tokens to obtain new access tokens. use either bob/bob, alice/alice or your Google account. Token issuance from IdentityServer4 won't yet be functional, but this is the skeleton of how IdentityServer4 is connected to our ASP. I've implemented a custom PersistedGrantStore storing my refresh tokens in a xml file, however I now have problems refreshing my tokens. If you're using a. UseCookieAuthentication(new CookieAuthenticationOptions { AuthenticationScheme = 'Cookies',. Note: While writing this article, IdentityServer4 is in Beta. If a user uses a mobile app every fifteen minutes during 12h he/she will still be logged off after approximately 9h even though the app is frequently used. 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. IdentityServer Overview. By default refresh tokens are stored in memory. Refresh_tokens are used to obtain new access_tokens. We do that by right clicking on our project and selecting Manage Nuget Packages… Then, we find the IdentityServer4 package by typing IdentityServer4. Most of the stuff out there was to perform account linking with Amazon's own OAUTH server, and not IdentityServer4. The use of tokens for authentication is useful in a large number of projects, but it is not the Holy Grail that solves all problems or serves for all products, but we must take it into account when proposing any solution. I’ve updated the GitHub repository for my existing article to use authorization code and PKCE. Is the Refresh Token different from the Access Token? Or is it just the Access Token 'refreshed' with a new expiration time? Also, we had been storing Access Tokens in a database so as to not expire the tokens for our users and require reauthentication. Refresh Token: each access token has an expiry date. The claims in a JWT are encoded as a JSON object that is digitally signed using JSON Web Signature (JWS). When access token expire generally server send a 401 Unauthorized response. In this episode, we look at the backend for frontend, and the changes required for it to handle the users authentication, redirection to the identity provider (the IdentityServer4 powered auth service), the inclusion of an access token when making API calls, the refresh of said token and handling CSRF tokens. Microsoft released ASP. EnableLocalLogin. 2 The role of cookies. 0 series, which will discuss the implementation of the system we designed in Chapter 1 / 2…. I've done that because i use MVC 3, and have not access to HttpContext. In this topic, we'll discuss how to import externally generated access tokens, refresh tokens, or auth codes into the Edge token store. Net Core Identity. JSON Web Token (JWT) is a compact URL-safe means of representing claims to be transferred between two parties. A new-ish alternative to session-based cookies that's well-suited to single page apps is token-based authentication. Access requests made within the refresh token's expiration time always return the current refresh token. Machine Learning Server, formerly known as Microsoft R Server, uses tokens to identify and authenticate the user who is sending the API call within your application. By clicking "I accept" on this banner, or using our website, you consent to the use of cookies. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: