Source: Diao Si Java Programmer (ID: java_diaosi) Information encryption technology utilizes mathematical or physical means to protect electronic information during transmission and storage to prevent leakage. Due to the illegal copying of computer software, communication leaks, and threats to data security, issues of decryption and piracy have become increasingly severe, even leading to international disputes. … Read more
In the field of information security, cryptography plays a crucial role by encoding and decoding information to ensure its confidentiality, integrity, and authenticity. Symmetric encryption is a major branch of cryptography, characterized by the use of the same key for both encryption and decryption. Among the many symmetric encryption algorithms, the Advanced Encryption Standard (AES) … Read more
Creating a Desktop File Encryption Tool with Java Hello, friends! I also started as a beginner in Python, and today we will create a super practical desktop file encryption tool using Java. In our daily work and life, file privacy and security are becoming increasingly important. With this tool, we can use high-strength encryption algorithms … Read more
PyCryptoDome: A Python Library for Cryptographic Algorithms! Hello everyone, I am your old friend. Today we are going to explore a very powerful Python library – PyCryptoDome. It is a robust library for implementing various cryptographic algorithms, supporting multiple symmetric and asymmetric encryption methods, as well as hash functions, message authentication codes, and more. With … Read more
This article introduces commonly used cryptographic algorithms in daily development. abstract.png Classical Cryptography Classical cryptography typically employs simple techniques such as substitution (replacing letters in plaintext with other letters) and transposition (rearranging the order of letters in plaintext), without the need for complex machines or algorithms. Therefore, its security is insufficient and easily compromised. Caesar … Read more
Dog Yu If this article is helpful to you Please give a “like” or “view” to support us Thank you~ This article is quite lengthy, totaling around 7000 words, so it is recommended to bookmark it for leisurely reading~~1. Overview of Symmetric Encryption Algorithms Symmetric encryption algorithms are one of the cornerstones of modern cryptography, … Read more
From the previous test (Performance Comparison of Different Encryption Algorithms in OpenVPN), we found that there are differences in forwarding performance when OpenVPN uses different encryption algorithms, as shown below: Comparing the encryption algorithms, we can see that the specific encryption algorithms are divided into three parts: the first part is the algorithm name, which … Read more
Click the “blue text” above to follow us “Hey, Lao Wang, did you resolve that data leak issue at your company?” As soon as I sat down, an old classmate hit me with that question. Before I even took a sip of my coffee, I recalled that nightmare weekend—50,000 user passwords stored in plaintext, all … Read more
1. Definition of Symmetric Encryption Algorithms A symmetric encryption algorithm is a type of encryption technology that uses the same key for both data encryption and decryption. In simple terms, the sender and receiver must share the same key, which is used to encrypt and decrypt the data. Symmetric encryption is often used in scenarios … Read more
Author: 0pening 1. Introduction Testing a certain WeChat mini program, without further ado, let’s start using BurpSuite to capture packets. However, upon capturing the packets, I noticed something was off 🤨. This application encrypts the parameters into bizContent and uses a signature parameter sign to prevent man-in-the-middle attacks on the data packets… not very honorable. … Read more