INRU: A Quasigroup Based Lightweight Block Cipher
This work addresses the need for lightweight cryptographic solutions, but it appears incremental as it builds on existing quasigroup concepts and compares to AES-128 without claiming broad superiority.
The authors tackled the problem of designing a lightweight block cipher by proposing INRU, a quasigroup-based cipher, and demonstrated its robustness against standard cryptanalytic attacks while showing its randomizing ability is equivalent to AES-128 in statistical tests.
In this paper, we propose a quasigroup based block cipher design. The round functions of the encryption and decryption algorithms use quasigroup based string transformations. We show the robustness of the design against the standard differential, linear and algebraic cryptanalytic attacks. We also provide detailed statistical analysis using NIST test suite in CBC, CFB, OFB, and CTR modes of operation. We compare the statistical experimental results with the AES-128 in the same setup and conclude that the randomizing ability of our algorithm is equivalent to that of AES-128.