Modified USB Security Token for User Authentication

Computer security has been a significant importance in today’s world. Many researches have been done in order to improve the security services with encryption and decryption of sensitive. In addition, Security protocols have been developed to protect accessing the data from the authorized users. One of these protocols is the One-Time Password (OTP) authentication in the USB security tokens. A well-known USB security Token is the Yubikey security tokens. However this token has protocol overhead and time consuming in addition to the speed and memory capacity limitations. In this paper, we have proposed a modification to the Yubikey security protocols in order to enhance the overhead, speed and size limitations in the user authentication process, in addition to increase the security factors that depend on a random number generated from the server and sent to the user via e-mail and SMS to his mobile. Experimental results have been conducted using C# programming language for the user and the server side. All the results show the efficiency improvement of our proposed protocol over the Yubikey security token in the terms of authentication factors, speed and memory size.