An authentication method resistant to video-recording attacks

This paper presents an authentication method, which can be effective against random login attack and video-recording attacks. Case studied in this article is that a user´s password entry operation has been recorded for multiple times, attackers then analyzes video Screenshots in order to crack its password. In our method, users submit a virtual keyboard with customized header-images to enter a password character instead of entering the concrete password character, which is more flexible and safer against video recording attack. At last, a crack algorithm is given to evaluate the security of this authentication method and its impact factors.