Securing the Smart Card Authentications Process by Embedment Random Number of Data Bits into Each Pixel
A. H. M. Kamal · International Journal of u- and e- Service Science and Technology · 2017
Smartcards do not tolerate any security threats because these are usually used to manage the financial transactions and for the official or personal security purposes.Authenticating the users in the smartcard based applications through data embedment is a promising research area.Because of the simplicity of used computing devices, i.e. processors, less memory, of the terminals, least significant bit (LSB) replacement schemes are used to hide the secret information in a photograph inside into the card.Nevertheless, there are statistical tests like Chi-Square test, comparison of histograms of pixel values of original and modified images, regular and singularity test of the pixel values, which can guess the possibility of modifications in the LSBs of image data.In this research, a new smartcard authentication scheme is proposed by embedding random number of bits into each pixel.The number of replaced bits in the i th pixel may not be the same of (i+1) th or other pixels.Security of the scheme is further enhanced by relating the starting position of the data embedment process with the user password as well as allowing that starting position in the image to be dissimilar for different user.The scheme is tested experimentally and it is found that it operates successfully.