Slide attack and its applications

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Tezin Türü: Yüksek Lisans

Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Fen Edebiyat Fakültesi, Matematik Bölümü, Türkiye

Tezin Onay Tarihi: 2017

Öğrenci: ERKAN USLU

Danışman: ALİ DOĞANAKSOY

Özet:

Block ciphers, widely used in cryptography, have been designed to encrypt large amount of data such as public sector services, banking services, Healthcare contributions. With the increment of technological developments, they have also been started to be used for small data in industrial products such as Internet of Things, smart cards, car keys etc. These types of cryptosystems are called as lightweight cryptosystems. Similar to other cryptographic algorithms, the ones used in lightweight systems need to be tested towards cryptanalytic techniques. The most common techniques are differential and linear cryptanalysis. However, they become less efficient when the number of rounds in algorithms is increased. At this point, a new method called slide attack which is independent of the number of rounds is developed. This thesis focuses on the fundamentals of the slide attack and especially how it works on block ciphers. Additionally, some applications that will be beneficial to understand slide attack is given. Moreover, we give a practical attack to a variant of PRESENT lightweight block cipher.