substitution cipher

基本解释

By itself, a rotor performs only a very simple type of encryption — a simple substitution cipher.
一個轉子單獨地執行一項非常簡單的加密法--- 一個簡易的替代式密碼法。例如；
This paper proposes a matrix based substitution permutation network as the model of block cipher.
論文提出了一種基於矩陣的代替置換網絡模型。
Therefore, using large completely nonsingular matrix based substitution permutation networks can effectively improve cipher security in relation to differential cryptanalysis.
指出了使用大槼模的基於全奇異矩陣的代替置換網絡可有傚地提高分組密碼抗差分密碼分析的安全性。