NEW APPROACHES FOR ROUND-REDUCED PRINCE CIPHER CRYPTANALYSIS
Raluca Posteuca, Cristina-Loredana Duta, Gabriel Negara, I. Cuza · 2015
The rapid development of technology influences the future of pervasive computing, which is characterized by the usage of smart devices with limited resources, such as computing power, memory or battery supply. To create pervasive applications, which meet real-time security needs, ciphers that are capable to run on devices with small computing power must be created. In this context, in the last few years, lightweight cryptography has been a hot research area and many impressive implementations and ciphers have been published. At ASIACRYPT’2012 conference a new lightweight block cipher, called PRINCE, was presented. After its appearance, the designers of the algorithm proposed a challenge for all cryptographers, which consist in finding practical attacks on round-reduced PRINCE cipher. In this article, we present various new attacks on round-reduced PRINCE and the time and data complexity necessary for each of them. The first attack which was successfully applied to 4, 5 and 6-rounds is the boomerang attack. We also describe a knownplaintext attack for 4 and 5-round PRINCE algorithm.