Implementation of Personal Data Security Using Advanced Encryption Standard (AES) Encrypted QR Codes on Digital Images Processed by the Discrete Cosine Transform (DCT) Method

Dadang Iskandar Mulyana; Sopan Adrianto; Sugiyono Sugiyono; Muflikhan Dimas Dwiprayogi

doi:10.62951/ijamc.v2i2.230

Implementation of Personal Data Security Using Advanced Encryption Standard (AES) Encrypted QR Codes on Digital Images Processed by the Discrete Cosine Transform (DCT) Method

Authors

Dadang Iskandar Mulyana Sekolah Tinggi Ilmu Komputer Cipta Karya Informatika Jakarta
Sopan Adrianto Sekolah Tinggi Ilmu Komputer Cipta Karya Informatika Jakarta
Sugiyono Sugiyono Sekolah Tinggi Ilmu Komputer Cipta Karya Informatika Jakarta
Muflikhan Dimas Dwiprayogi Sekolah Tinggi Ilmu Komputer Cipta Karya Informatika Jakarta

DOI:

https://doi.org/10.62951/ijamc.v2i2.230

Keywords:

AES Cryptography, Discrete Cosine Transform, Personal Data Security, QR Code, Steganography

Abstract

The dissemination of personal data through digital media has increased significantly alongside the growing use of Quick Response (QR) Codes for various purposes, such as electronic tickets, certificates, and digital identities. Conventional QR Codes are open and can be easily scanned, copied, or manipulated by unauthorized parties. The personal data referred to in this study includes sensitive information such as full name, identity number (NIK/National ID), date of birth, address, phone number, and email address. This research proposes a layered security system that combines the Advanced Encryption Standard (AES) cryptographic algorithm with steganography using the Discrete Cosine Transform (DCT) method. The process begins with encrypting personal data using AES, converting the encrypted result into a QR Code, and embedding the QR Code into a digital image using DCT, hiding it in the image’s frequency domain. The digital images used are of fixed size and formats that preserve visual quality. System evaluation is carried out by testing the visual quality of the stego image, the success rate of QR Code extraction, and the integrity of the encrypted data. The results are expected to conceal sensitive information visually while maintaining its confidentiality, with potential applications in electronic ID cards, digital certificates, e-tickets, and other confidential documents.

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Published

2025-04-30

How to Cite

Dadang Iskandar Mulyana, Sopan Adrianto, Sugiyono Sugiyono, & Muflikhan Dimas Dwiprayogi. (2025). Implementation of Personal Data Security Using Advanced Encryption Standard (AES) Encrypted QR Codes on Digital Images Processed by the Discrete Cosine Transform (DCT) Method. International Journal of Applied Mathematics and Computing, 2(2), 33–45. https://doi.org/10.62951/ijamc.v2i2.230