DESIGN AND IMPLEMENTATION OF A CRYPTOGRAPHIC METHOD ON MATHEMATICAL EXPRESSIONS

Yıl 2020, Cilt: 16 Sayı: 2, 121 - 129, 30.12.2020

Bahar Milani Muhammed Milani Özlem Orhan

Öz

Data hiding has been a very interesting issue recently and various methods have been developed to deal with this issue. With the development of data hiding techniques, suitable steganalysis design to detect hidden data appears in studies. However, an approach to common valves followed by steganalyses to a new type of valve may be less questionable. In this study, a method for hiding messages in mathematical expressions is proposed. In the proposed method, the mathematical expression is used as a cover to convey the message with a secure text. In line with the study, we propose a methodology for problems that can be included in the computer algebra system. Its method involves developing a grammar-based interpreter who can recognize the syntax and meaning of mathematical expressions and turn it into an abstract syntax tree (AST).

Anahtar Kelimeler

Data hiding, Stochastic grammar, Math expression, Abstract Syntax Tree, Parser, javaCC

MATEMATIKSEL İFADELER ÜZERİNE BİR KRİPTOGRAFİK YÖNTEMİN TASARIMI VE GERÇEKLEMESİ

Öz

Veri gizleme son zamanlarda çok dikkat çekici konulardan olmuştur ve bu konu ile ilgili çeşitli yöntemler geliştirilmiştir. Veri gizleme tekniklerin gelişmesi ile birlikte gizli verileri saptamak için uygun steganaliz tasarlama çalışmalarda görünmektedir. Ancak, steganalizler tarafından izlenilen genel kapaklar yeni tipte bir kapağa getirilen bir yaklaşım daha az şüpheli olabilir. Bu çalışmada, matematik ifadeler içerisinde mesaj gizleme için bir yöntem önerilmiştir. Önerilen yöntemde matematiksel ifade, mesajı güvenli bir metinle birlikte iletmek için bir kapak olarak kullanılmaktadır. Çalışma doğrultusunda, bilgisayar cebir sistemine dahil edilebilecek problemleri için bir metodoloji öneriyoruz. Metodolojini matematiksel ifadelerin sözdizimini ve anlamını açıklayan biçimsel bir gramerin geliştirilmesini ve belirli bir matematiksel ifadeyi Özet Sözdizimi Ağacına (AST) dönüştürmek kapsar.

Anahtar Kelimeler

Veri gizleme, Stokastik gramer, Matematik ifade, Soyut Sözdizimi Ağacı, Parser, javaCC

Kaynakça

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