#Getting Started Backend Sample This sample shows how to validate tokens in a backend service.

For step by step instructions, see the Microsoft Identity Portal.

About the Basic Backend Service

This sample backend service is an ASP.NET Core web API. .NET Core ships with a library for performing JSON Web Token (JWT) Bearer Authentication. Here are some key highlights from the code:

1. This code in startup.cs configures JWT Bearer Authentication for all routes:

var tokenValidationParameters = new TokenValidationParameters();

// If you wish to restrict access to specific organizations, you must configure a list of valid issuers
tokenValidationParameters.ValidateIssuer = false;

var options = new JwtBearerOptions 
{ 
 Audience = Configuration["MicrosoftIdentity:ClientId"], 
 Authority = Configuration["MicrosoftIdentity:Authority"],
 TokenValidationParameters = tokenValidationParameters
}; 

app.UseJwtBearerAuthentication(options); 

2. This code in ClaimsController.cs sends the claims in the token back to the caller:

//We have one action method for returning the claims from the current token. 
public class ClaimsController : Controller 
{ 
 [Authorize] 
 [HttpGet] 
 public object Get() 
 { 
     return User.Claims.Select(x => 
         new  
         { 
             Type = x.Type, 
             Value = x.Value 
         } 
     ); 
 } 
} 

You can read more about validating tokens here.

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Contributing

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License

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