Introduction to HTTP Protocol The HTTP protocol is a text-based transmission protocol that operates at the application layer of the OSI network model. The HTTP protocol communicates through request-response interactions between clients and servers. The protocol has been split from the previous RFC 2616 into six separate protocol specifications (RFC 7230, RFC 7231, RFC 7232, … Read more
Recently, I worked on a project that involved selecting some encryption algorithms, and I would like to summarize them here to deepen our understanding of encryption. The most commonly used encryption algorithms can be summarized as one-way encryption and two-way encryption. They are quite simple and not difficult to understand. However, I believe it is … Read more
Application of Encryption Algorithms in PLCs: Protecting Intellectual Property and Data Security Introduction: New Security Challenges in Industrial Control Systems With the advancement of Industry 4.0, PLC systems are increasingly connected to enterprise networks and even the internet. This connectivity enhances efficiency but also brings unprecedented security risks to the systems. In a automotive parts … Read more
Implementing a Simple Encryption and Decryption Tool in C In today’s article, we will implement a simple encryption and decryption tool using the C programming language. This tool is based on a very basic character substitution algorithm, allowing users to input a plaintext, encrypt it using a defined method, and then decrypt it back through … Read more
Click the blue text “ShunYun Multi-Physical Field Simulation” Explore advanced algorithm engines Elliptic Curve Cryptography (ECC) is a highly regarded topic. ECC is a public key encryption algorithm that utilizes points on an elliptic curve for encryption and decryption operations. Compared to traditional RSA algorithms, ECC offers greater efficiency and security by using shorter key … Read more
ref: RFC3961 An encryption mechanism must define the following properties and operations: 1. Protocol Key Format Specifies which characters (octet string) can appear in a valid key. For keys that require special encoding, it must specify how to encode them. For encryption mechanisms that don’t have <span>perfectly dense key spaces</span>, this will describe the representation … Read more
Introduction Traditional hair dryers often use brushed motors, which have lower speeds, simple structures, and driving methods, resulting in lower overall costs. However, these conventional hair dryers produce less airflow, and to ensure effective drying, they must rely on high-power heating elements to increase the air temperature, which can be quite hot during regular use … Read more
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
Security Design Solutions for IoT Applications Driven by PLC Function Block Diagrams A few days ago, a friend involved in factory automation rushed to me, saying that their temperature control system inexplicably activated in the middle of the night, nearly causing a safety incident. After investigation, it was found that their newly launched remote monitoring … Read more
链接：https://blog.csdn.net/weixin_74814027/article/details/145933302?spm=1001.2014.3001.5502 1. Introduction to HTTP and HTTPS HTTP (HyperText Transfer Protocol) is a stateless communication protocol commonly used for transmitting hypertext (such as HTML pages) between clients (like browsers) and servers. However, it is merely a one-way communication protocol, and data is not encrypted during transmission, making it susceptible to man-in-the-middle attacks. Stateless means it … Read more