On Rijndael ByteSub Transformation

• 作者: W. Eltayeb Ahmed
• 来源期刊: 应用数学(英文)
• 学科: 数学
• 关键词: RIJNDAEL CIPHER Advanced ENCRYPTION Standard MULTIPLICATIVE INVERSE XOR Operation
• 年，卷（期）: 2019,（3）
• 页码范围: 113-118
• 页数: 6页
• 分类号: O1

摘要

The first step in converting a plaintext to ciphertext by the famous Advanced Encryption Standard (AES), which is called Rijndael ByteSub Transformation, involves some operations: computing a multiplicative inverse, multiplying this multiplicative inverse by a specific matrix, and adding the result to a specific vector. The purpose of this research is to simplify these operations. This paper gives elegant techniques and presents the matrices multiplication as simple XOR operations, and the result is a simple, straightforward way finding the transformation.