DLSB - Uzaklaştırılmış en önemsiz bit steganografi

Yıl 2023, Cilt: 38 Sayı: 3, 1725 - 1736, 06.01.2023

Burak Baysan Serhat Özekes

https://doi.org/10.17341/gazimmfd.1058824

Cited By: 1

Öz

Bugün halen 24-bit, 8-bit renkli ve gri-ölçekli imgeler içerisinde mesaj gizleyen çok sayıda kurumsal, ticari ve kişisel steganografi aracında LSB (Least Significant Bit) yöntemi kullanılmaktadır. Bu yöntemin sıklıkla tercih edilmesinin gerekçesi çok kolay uygulanabilmesi ve çok büyük mesaj saklama kapasitesine imkân vermesidir. Ancak LSB yöntemine karşı kolayca uygulanabilen ve gömülü mesajın izlerini görselleştiren Piksel Saldırısı ise literatürdeki ve steganalistin alet çantasındaki yerini korumaktadır. Bu çalışmada LSB yönteminde kullanılan aralıksız mesaj biti yerleşimi yerine, orantılı uzaklıkta mesaj biti yerleşimini kullanan ve Piksel Saldırısına dirençli temel bir yöntem olan DLSB (Distanced Least Significiant Bit) – Uzaklaştırılmış En Önemsiz Bit Steganografi önerilmiştir.

Anahtar Kelimeler

• Steganografi, lsb, dlsb, gizli

Kaynakça

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