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Journals / Bilişim Teknolojileri Dergisi / 2019 / Cilt: 12 Sayı: 1

A new approach for Steganography: Bit shifting operation of encrypted data in LSB (SED-LSB)

Steganografi için yeni bir yaklaşım: (SED-LSB) LSB ile şifrelenmiş verilerin bit kaydırma işlemi

Serdar Solak(Kocaeli University, Informatics Department)0000-0003-1081-1598
Umut Altınışık(Kocaeli University, Informatics Department)0000-0003-3119-3338
Pages
75–81
Publication Date
2019-01-31
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

In the proposed method, when data are hidden at a higher capacity, stage image is found not only secure but also high quality.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this article, a new method is presented by adding bit shift of encrypted data in LSB method (SED-LSB).
📊
Key Findings & Data:The 512 x 512 size of colored images as Lena, Peppers, Fruits and Baboon are used to hide 87373 byte data.
💡
Conclusion & Impact:In the proposed method, when data are hidden at a higher capacity, stage image is found not only secure but also high quality.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:LSB · SED-LSB · Steganografi

Abstract

In this article, a new method is presented by adding bit shift of encrypted data in LSB method (SED-LSB). The message to be embedded in the cover image is encrypted by the key received from the user. Then, secret data are obtained by bit shifting operation using this encrypted text. Finally, the secret data is hidden inside the cover image using the LSB method. SED-LSB is performed by preparing GUI in MATLAB. The quality of the cover image is measured by Peak Signal-to-Noise Ratio (PSNR), besides the similarity between the cover and stego image is determined by the Structural Similarity Index (SSIM). The 512 x 512 size of colored images as Lena, Peppers, Fruits and Baboon are used to hide 87373 byte data. PSNR values are between 51.615 – 51.656 and SSIM values are between 0.99937 – 0.99982. In the proposed method, when data are hidden at a higher capacity, stage image is found not only secure but also high quality.

Özet

Makalede, veri gizlemede yaygın kullanılan LSB yöntemine bit kaydırma özelliği eklenerek yeni bir yöntem sunulmaktadır. Örtü görüntüye saklanacak olan metinler ilk olarak kullanıcıdan alınan anahtar sayesinde şifrelenmektedir. Bu işlemin ardından bit kaydırma özelliği kullanılarak gizli veri oluşturulmaktadır. Gizli veri, LSB yöntemi kullanılarak örtü görüntü içerisine gizlenmektedir. Çalışma MATLAB ortamında GUI hazırlanarak gerçekleştirilmiş olup, elde edilen PSNR ve SSIM değerleri makalede sunulmaktadır. 512 x 512 boyutlarında kullanılan Lena, Peppers, Fruits ve Baboon resimlerine 87373 bayt veri gizlenmiştir. PSNR değerlerinin 51,615 ile 51,656 arasında, SSIM değerlerinin ise 0,99937 ile 0,99982 arasında olduğu gözlenmiştir. Önerilen yöntem ile resimlerin içerisine yüksek kapasitede veriler güvenli bir şekilde gizlenmekte ve örtü görüntü ile stego görüntünün benzerliği yüksek çıkmaktadır.

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Cite This Article

Solak, S., Altınışık, U., *, U. A. (2019). A new approach for Steganography: Bit shifting operation of encrypted data in LSB (SED-LSB). Bilişim Teknolojileri Dergisi, Cilt: 12 Sayı: 1, 75–81. https://doi.org/10.17671/gazibtd.435437

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