Developing Secure Applications with Visual Basic

Building a Login Validation Utility

To see some of what has been covered in this and the previous chapter, you'll build a two (or three) piece application. This application consists of one or two DLLs containing some of the code provided in this and the previous chapter. This code is Listings 11.1, 11.2, 11.3, and 10.12. The other part of the application is a user front end that enables you to enter a username and password to validate and a file to check for access.

Creating the DLLs

Package the code listings into a couple of DLLs. For the first DLL, create a project named SecurLoginBO and place the code listings from this chapter, 11.1, 11.2, and 11.3, into a class named clsLoginDomain. For the second DLL, create a project named Authorize and ...