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Look at the Shift Amount and Correspondence Table First | picoCTF Cryptography Intro 4-Problem Writeup Japanese Explanation

I will provide a summary explanation for four introductory problems from CyLab Security Academy (formerly picoCTF) Cryptography. The problems covered are "Mod 26," "The Numbers," "caesar," and "Easy1.
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Reversing 23 numbers one by one using the modular inverse of 41 | picoCTF "basic-mod2" writeup Japanese explanation

I will explain three problems from the CyLab Security Academy (formerly picoCTF) Cryptography section. The problems covered are "13", "basic-mod1", and "basic-mod2". All three problems involve ...
GitHub

Python Learning Projects

Welcome to my Python projects repository. It documents my progress as I develop Python programming skills through hands-on exercises and practical projects. This repository is also informed by Angela ...
GitHub

Learn Python

This course contains lots of challenges for Python, each challenge is a small Python project with detailed instructions and solutions. You can practice your Python skills by solving these challenges, ...
blog.csdn

Python破解替换密码：频率分析+爬山算法实战

本内容遵循CC 4.0 BY-SA版权协议 前阵子在一个CTF交流群里看到有人问："这种乱码除了在线网站还能怎么解？" 我点开那张截图一看，就是典型的替换密码（substitution cipher），整段密文只保留了 ...
blog.csdn

Python字符与ASCII码转换实战指南

字符编码是计算机处理文本数据的基础，ASCII作为最广泛使用的编码标准，定义了128个字符与数字的映射关系。理解字符与编码值的转换原理，对数据处理、网络通信和系统开发都至关重要。Python通过内置的ord()和chr()函数实现字符与Unicode码点的高效转换，这些方法在数据清洗、加密算法和硬件通信 ...