Static Password authentication is one of the easiest and the most convenient authentication mechanisms to gain access into a system. Unfortunately, these static password authentication systems are not foolproof and can be vulnerable to various attacks such as replay attack, brute force attacks, modification attacks, spoofing attacks, guessing attack. So One-time password authentication which uses dynamic password helps to enhance the security of password and makes it difficult for unauthorized users to gain access to restricted resources. Many OTP generating schemes using time synchronized token, smart cards, Short Message Service (SMS) and QR code based authentication systems provide a layer of additional security in accessing restricted resources. However, the currently existing schemes are impractical as they are expensive demanding huge installation and maintenance costs. So in this paper, we design and develop a novel OTP delivery system using Raspberry Pi and GSM module taking all the drawbacks of the existing systems into consideration. By using this system, we now can reduce the installing and maintenance costs involved in delivering OTP by 20 percent and 80 percent respectively.

Paper submitted and is currently under review