QR Code Steganography
نویسنده
چکیده
QR codes, also known as matrix codes, are basically two dimensional barcodes embedded with data that can be decoded quickly for information. In this work, we present a novel use of QR codes. We show that QR codes can be used for covert communication using steganography. We also show in complete detail how to build QR code symbols with a hidden payload and how to extract this hidden information in two ways: with and without a shared secret key. An interesting feature of our research is that we present a technique to convert innocuous QR codes into carriers for malicious messages and malware using simple, everyday tools and software. Communicating secret messages in plain sight creates a credible threat to our national security. We hope that our work brings this issue to light and enhances counterterrorism education.
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