public override async Task GrantResourceOwnerCredentials(OAuthGrantResourceOwnerCredentialsContext context) { var userManager = context.OwinContext.GetUserManager <BitUserManager>(); BitUser user = await userManager.FindAsync(context.UserName, context.Password); if (user == null) { context.SetError("invalid_grant", "El nombre de usuario o la contraseña no son correctos."); return; } if (!user.EmailConfirmed) { context.SetError("invalid_grant", "El email no está confirmado"); return; } ClaimsIdentity oAuthIdentity = await user.GenerateUserIdentityAsync(userManager, OAuthDefaults.AuthenticationType); ClaimsIdentity cookiesIdentity = await user.GenerateUserIdentityAsync(userManager, CookieAuthenticationDefaults.AuthenticationType); AuthenticationProperties properties = CreateProperties(user.UserName); AuthenticationTicket ticket = new AuthenticationTicket(oAuthIdentity, properties); context.Validated(ticket); context.Request.Context.Authentication.SignIn(cookiesIdentity); }