Make A Web API in .net

Question

How to make a login api with AuthToken .I have create a login without AuthToken. Please help me how to make a login api with auth token.

Sachin Singh · Answer

https://www.sharpencode.com/article/WebApi/authentication-authorization/token-based-authentication you just need to follow three steps step 1. install these packages install-package Microsoft.Owin.Host.SystemWeb install-package Microsoft.Owin.Security.OAuth install-package Microsoft.Owin.Cors step 2. Add a class in your project and name it Startup.Cs step 3. Add below code to your startup public class Startup { public void Configuration(IAppBuilder app) { app.UseCors(Microsoft.Owin.Cors.CorsOptions.AllowAll); var myProvider = new AuthProvider(); OAuthAuthorizationServerOptions options = new OAuthAuthorizationServerOptions { AllowInsecureHttp = true , TokenEndpointPath = new PathString( "/token" ), AccessTokenExpireTimeSpan = TimeSpan.FromDays(1), Provider = myProvider }; app.UseOAuthAuthorizationServer(options); app.UseOAuthBearerAuthentication(new OAuthBearerAuthenticationOptions()); HttpConfiguration config = new HttpConfiguration(); WebApiConfig.Register(config); } step 4. create AuthorizationServer as per your requirement like public class AuthProvider: OAuthAuthorizationServerProvider { public override async Task ValidateClientAuthentication(OAuthValidateClientAuthenticationContext context) { context.Validated(); } public override async Task GrantResourceOwnerCredentials(OAuthGrantResourceOwnerCredentialsContext context) { var identity = new ClaimsIdentity(context.Options.AuthenticationType); if (context.UserName == "admin" && context. Password == "admin" ) { identity.AddClaim(new Claim(ClaimTypes.Role, "admin" )); identity.AddClaim(new Claim( "username" , "admin" )); identity.AddClaim(new Claim(ClaimTypes. Name , "Hi Admin" )); context.Validated(identity); } else if (context.UserName == "user" && context. Password == "user" ) { identity.AddClaim(new Claim(ClaimTypes.Role, "user" )); identity.AddClaim(new Claim( "username" , "user" )); identity.AddClaim(new Claim(ClaimTypes. Name , "Hi User" )); context.Validated(identity); } else { context.SetError( "invalid_grant" , "Provided username and password is incorrect" ); return ; } } } now you are all set just mark any method with Authorize attribute and run your application to know more like what is OAuth and Owin read my article https://www.sharpencode.com/article/WebApi/authentication-authorization/token-based-authentication

Piyush Pansuriya · Answer

Hi Sourabh, Please go through the below URLs https://www.dotnettricks.com/learn/webapi/token-based-authentication-in-aspnet-web-api https://www.c-sharpcorner.com/UploadFile/ff2f08/token-based-authentication-using-Asp-Net-web-api-owin-and-i/ https://www.c-sharpcorner.com/article/web-ap/ https://developer.okta.com/blog/2018/02/01/secure-aspnetcore-webapi-token-auth

Asma Khalid · Answer

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Mageshwaran R · Answer

https://www.dotnetcurry.com/aspnet/1223/secure-aspnet-web-api-using-tokens-owin-angularjs