👉 In mathematics, a Feistel network is a type of circuit that can be used to implement various cryptographic algorithms. It is named after the German mathematician Karl Friedrich Gauss who first described it in 1842. The term "Feistier" refers to a specific mathematical structure or construction that is used to construct a Feistel network, which is commonly used in cryptography to enhance security and efficiency of encryption algorithms. The Feistiel network can be constructed using the following steps:
