Complexity Evaluation of Constructing Method for Saturated Best Resilient Functions in Stream Cipher Design
Sattar B. Sadkhan, Sabiha F. Jawad · 2019
The role of the nonlinear Boolean function in the design of secure stream cipher considered as an important approach in the design of Stream cipher cryptosystem. It is well known that the main aspect in the stream cipher security is the Key generators, which generate a key sequence, which will be used to encrypt the data. This paper introduces a method for constructing the Saturated Best Resilient Functions (SBRS), and provides an evaluation to the nonlinearity, resiliency, algebraic degree and complexity of the SBRS functions, that designed to enhance the security of stream cipher crypto-systems.