Landing page for file downloading. password protected

I need you to develop a simple web page to be accessed from mobile phones. This landing page will have one field that requests the user to enter password. If the password is correct, it will allow the user to download a specific file. We should have an admin account for the admin to upload many files. For each file that the admin uploads, he will have to enter the user name and the password. So when the user enters a valid password, he will get a message "welcome user name" and a button to download the file. I will provide the design for the page. If the user enters wrong password, he will get a message "wrong password. Please try again" You have to suggest a solution for the storing the database. We will have 100 files. Each about 5 meg PDF. All the messages should be in Chinese. Please bid only if you can do it today.