Veri Gizlemek Amacıyla Labirent Oluşturma ve AES Veri Şifreleme Algoritması Tabanlı Bir Yöntem Önerisi

Year 2019, Volume: 6 Issue: 3, 668 - 680, 30.09.2019

Erdal Güvenoğlu , Can Razbonyalı

https://doi.org/10.31202/ecjse.571030

Cited By: 3

Abstract

Görüntü, ses ve video gibi multimedya ortamlarında gizli verilerin iletilmesini sağlayan bilim dalına steganografi adı verilmektedir. Günlük hayatımızda internetin yaygın olarak kullanılması, kişiye özel bilgilerin iletilmesi problemini de beraberinde getirmiştir. Dolayısı ile steganografi bilimine olan ihtiyaç da artmıştır. Bu çalışmada kişiye özel bir anahtar yardımı ile veri gizlenecek ortam büyüklüğünde bir labirent üretilmektedir. Veri gizleme ortamı olarak farklı ölçülerde ve farklı formatlarda 24 bit derinliğe sahip renkli resimler kullanılmıştır. Labiret üretimi için hem labirentin oluşturulmasını hem de çözüm yolunun birlikte bulunmasını sağlayan Depth First Search algoritmasından faydalanılmıştır. Labirentten elde edilen çözüm yolu koordinatlarına denk gelecek şekilde görüntü üzerindeki piksellerin içerisine bilgi gizlenmektedir. Bilgi gizlemek için En Düşük Bite Ekleme yöntemi kullanılmıştır. Çalışmada önerilen yöntemin daha güçlü kılınması için, veri gizleme işleminden önce gizlenecek veriler AES şifreleme algoritması ile şifrelenmiştir. Böylelikle gizli verilerin üçüncü şahıslar tarafından elde edilmesi güç hale gelmektedir. Öne sürülen yöntem detaylı güvenlik analizleriyle test edilmiş ve veri gizleme/veri çıkarma işlemlerinin başarılı olduğu gözlenmiştir.

Keywords

Steganografi, Veri Gizleme

The Creation of Maze in Order to Hide Data, and the Proposal of Method Based on AES Data Encryption Algorithm

Abstract

The field of science, which enables the transmission of private data in multimedia environments such as display, audio and video, is called steganography. The widespread use of the internet in our daily lives has brought about the problem of transmitting confidential information. Hence, the need for steganography science has also increased. In this study, a labyrinth is produced in the size of the environment in which the data can hide with the help of a private key. Color images with 24-bit depth were used as data hiding environment in different measures and different formats. For the production of maze, the Depth First Search algorithm, which ensures both the creation of the maze and the finding of solution path together with this, was utilized. It is made the information hide inside the pixels on the image, corresponding to the coordinates of the solution path obtained from the maze. The Lowest Bit Insertion method was used to hide information. In order to make the proposed method more robust, the data, which will be hidden before the data hiding process was encrypted with the AES encryption algorithm. This makes it difficult for third parties to obtain confidential data. The proposed method was tested with detailed security analysis and it was observed that data hiding / data extraction processes were successful.

Keywords

Steganography, Data Hiding

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