Install-Package EdjCase.BasicAuth

Install-Package EdjCase.BasicAuth -Pre

public void ConfigureServices(IServiceCollection services)
{
	services.AddBasicAuth();
	//Adds default IBasicAuthParser implementation to the services collection.
	//(Can be overridden by custom implementations if desired)
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
	app.UseBasicAuth(options => 
	{
	    options.Realm = "YourRealm"; //Replace with your Basic Auth realm
        options.AuthenticateCredential = this.AuthenticateCredential;
        options.AutomaticAuthenticate = true; //Defaults to false. True means its will auth all requests, False means it will only auth basic auth requests
        options.AutomaticChallenge = true; 
		options.Events = new BasicAuthEvents
		{
			OnAuthenticationFailed = this.OnAuthenticationFailed
		};
	});
}

//Custom (and required) method that you will use to check the basic auth credential
//It needs to return an 'AuthenticationTicket' that holds the user principal IF the user is authenticated
//(Here I just check for Test:Password credential, dont do that)
private Task<AuthenticationTicket> AuthenticateCredential(BasicAuthInfo authInfo)
{
	AuthenticationTicket ticket = null;
	if (authInfo.Credential.Username == "Test" && authInfo.Credential.Password == "Password")
	{
		ClaimsIdentity identity = new ClaimsIdentity(authInfo.AuthenticationScheme);
		identity.AddClaim(new Claim(ClaimTypes.Name, "Test"));
		identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, "TestId"));
		ClaimsPrincipal principal = new ClaimsPrincipal(identity);
		ticket = new AuthenticationTicket(principal, authInfo.Properties, authInfo.AuthenticationScheme);
	}
	return Task.FromResult(ticket);
}

//Optional method to handle the failure in the basic auth process
//The failure details are in the context object
private Task OnAuthenticationFailed(BasicAuthFailedContext context)
{
	//if...(something that can be handled)...context.HandleResponse();
	//if...(should skip to next middleware)...context.SkipToNextMiddleware();
	return Task.FromResult(0);
}