
DES supplementary material - Wikipedia
This table lists the eight S-boxes used in DES. Each S-box replaces a 6-bit input with a 4-bit output. Given a 6-bit input, the 4-bit output is found by selecting the row using the outer two bits, and the column using the inner four bits.
DES算法S盒学习-CSDN博客
2020年8月20日 · 在密码学中,S盒(Substitution-box)是对称密钥算法执行置换计算的基本结构。 S盒用在分组密码算法中,是唯一的非线性结构。 S盒是将48比特压缩成32比特,S盒接受特定数量的输入48比特,经过8个盒将其转换为32比特输出。
信息安全密码学:DES算法的核心 E盒、S盒、P盒 - CSDN博客
在密码学中,S盒(Substitution-box)是对称密钥算法执行置换计算的基本结构。 S盒用在分组密码算法中,是唯一的非线性结构。 S盒是将48比特压缩成32比特,S盒接受特定数量的输入48比特,经过8个盒将其转换为32比特输出。
S盒 - 维基百科,自由的百科全书
在密码学中,一个S盒(Substitution-box,替换盒)是對稱密鑰加密算法执行替换计算的基本结构。 在 块密码 中,它们通常用于模糊密钥与 密文 之间的关系—— 香农 的 混淆 理论 [ 1 ] 。
S-box - Wikipedia
In cryptography, an S-box (substitution-box) is a basic component of symmetric key algorithms which performs substitution. In block ciphers , they are typically used to obscure the relationship between the key and the ciphertext , thus ensuring Shannon's property of confusion .
9.3 THE DES S-BOXES, P-BOX, AND INITIAL PERMUTATION (IP)
Tables 9.4 to 9.11 specify the seven DES S-boxes, each with a 6-bit input (x 0, x 1, x 2, x 3, x 4, x 5, x 6) and a 4-bit output (y 0, y 1, y 2, y 3); each table contains 4 rows and 15 columns, where. Bits (x 0, x 6) identify a row in the table, and; bits (x 1, x 2, x 3, x 4) identify a column in the table. TABLE 9.4 DES S-Box S[0] TABLE 9.5 ...
What is S-Box Substitution? - GeeksforGeeks
2024年5月21日 · The S-Box is an important part of symmetric key encryption algorithms. It's a substitution table used to do nonlinear substitutions in the course of encryption. Each byte of the input is substituted for another byte according to a fixed table which strengthens the confusion and diffusion properties of the encryption.
揭秘Des算法核心:深度解析S盒子的补全与优化 - 云原生实践
s盒子是des算法中最重要的非线性组件,它由8个s盒子组成,每个s盒子包含6位输入和4位输出。 S盒子的设计原理是将输入的6位数据映射到输出4位数据,从而实现加密过程中的非线性变换。
DES算法-S盒计算 - CSDN博客
2024年6月7日 · 在传统加密技术中,S盒(Substitution box)作为一种重要的非线性变换组件,在数据加密标准(DES)等加密算法中发挥着核心作用。 S 盒 的设计和评价标准直接影响到加密系统的安全性与强度。
What are the role of S-boxes in DES? - Online Tutorials Library
2022年3月14日 · What are the role of S-boxes in DES? In DES, it is a symmetric-key block cipher introduced by the National Institute of Standards and Technology (NIST). DES was introduced as FIPS 46 in the Federal Register in January 1977. NIST can represent DES as the standard for use in unclassified software.