Abstract

Security efficiency and hardware efficiency are equally important when designing a block cipher. In this paper, we propose a new block cipher that uses string transformations and requires less memory and fewer computational resources, making it suitable for highly constrained environments. We compare the performance of our design with AES-128 and quasigroup-based block cipher INRU in the cipher block chaining (CBC) mode of operation using the National Institute of Standards and Technology (NIST) test suite. We then analyze our design against the standard linear, differential, and algebraic attacks. Choosing suitable S-boxes and a quasigroup of a smaller order does not compromise the security of the cipher, but the storage space is reduced compared with AES-128 and INRU.

摘要

在设计分组密码时，安全效率和硬件效率同样重要。在本文中，我们提出了一种新的分组密码，它使用字符串转换，需要更少的内存和计算资源，使其适合高度受限的环境。我们使用美国国家标准与技术研究所 (NIST) 测试套件，在密码块链 (CBC) 操作模式下将我们的设计与 AES-128 和基于准群的块密码 INRU 进行比较。然后，我们针对标准线性、微分和代数攻击分析我们的设计。选择合适的S盒和较小阶数的拟群不会损害密码的安全性，但与AES-128和INRU相比，存储空间有所减少。