Secure Data Using Quick Response Code

Abstract

Keeping confidential data and hiding it from unauthorized people has become a real challenge during this time, cryptography play a major role for secured data transfer. Quick Response Code (QR Code) are 2-dimensional barcodes that encode text strings. QR code can be used for various applications such as business, marketing, education, data security, authentication etc. They are able to encode information in both vertical and horizontal direction, thus able to encode more information. In this research, a novel cryptography technique based on Quick Response code (QR code) is proposed, the technology encrypts secret message by using Advanced Encryption Standard algorithm (AES), then hide secret message in QR code, the QR code is saved as black and white image, then Arnold transform was applied to the Quick Response Code, which performs the scrambling operation by randomly changing the pixel positions of an QR code image, finally the scrambled image is then decomposed into five coefficients using the Shearlet transform, Shearlets have been applied to image for enhancement. Experimental result shows that the proposed method has more security and enhances the confidentiality.