Authentication of Printed Document Using Quick Response (QR) Code

Implementation of information systems in the public service has an impact on increasing the use of digital documents. Digital documents replace function of printed documents because they are legally recognised. In reality, printed documents are still considered relevant because it is still considered necessary as legitimate evidence; one example is the permit document. Permit documents are essential because they are needed as administrative requirements. The importance of permit documents has resulted in many falsifications of these documents. Therefore guaranteeing the authenticity of these documents is needed. The use of Quick Response (QR) Code is present as a guarantor of authenticity document because it is considered capable of being an effortless way to validate the authenticity of printed documents. Authentication of QR codes is difficult to determine by using the human senses because they cannot know the original and fake codes. This inability causes QR Code to be vulnerable to counterfeiting. To guarantee authenticity, a unique QR code that is easily validated is needed. This study creates a unique QR Code by utilising AES and SHA-256 that are difficult to produce by other people so that the authenticity of information about document content can be guaranteed and easily validated.