Security is not additive, but subtractive—TLS 1.3 achieves this through a “minimalist” cipher suite, removing over 10 features (such as compression and renegotiation), and reducing the cipher suites from 37 to 5,AES-CBC was directly removed due to security risks. Meanwhile, the ChaCha20-Poly1305 algorithm has become the new favorite in the TLS protocol, gradually taking center … Read more
The RSA encryption algorithm is the most commonly used asymmetric encryption algorithm, proposed by Ron Rivest, Adi Shamir, and Leonard Adleman in 1977. The name RSA is derived from the initials of their last names. It is the first relatively complete public key algorithm, which can be used for both encryption and digital signatures. This … Read more
Introduction In today’s digital age, data security has become one of the most severe challenges faced by enterprises and developers. Imagine your bank account information and personal privacy data as precious items placed in a transparent glass house, easily visible to anyone. This is why data encryption technology is so important—it acts like an invisibility … Read more
With the release of the new M7, Wanjie’s visibility has surged recently. I happened to see the circuit diagram of the 2022 Wanjie M5 and organized it to share with everyone. First, we have the basic CAN network, which can be seen from the gateway interface, as shown in the figure below. These include BD … Read more
1. Core Fault Characteristic Analysis Fault Phenomenon: ECU not functioning → Restored by reconnecting the harness → No physical damage to the connector Essential Cause: Connection stability issue (not a permanent disconnection, but abnormal contact resistance or momentary signal interruption) 2. Five Fundamental Causes and Troubleshooting Methods 1. Poor contact of terminal micro-switches (approx. 40%) … Read more
Source | Pistachio Need CarKnowledge Circle | In the camera lens/module/CMOS chip group, add micro yijijuechen2023This article focuses on the wake-up, sleep, and reset of the ECU, and examines whether your understanding differs from this explanation. 1. ECU Wake-up To clarify the wake-up of the ECU, we must study the corresponding hardware schematic. The essence … Read more
In automotive MBD (Model-Based Design) development, the Delay Module in Simulink is an extremely fundamental yet crucial component. For example, by using the Delay Module, we can simulate physical world delays, including delays in sensors, actuators, and communications: Actual sensors (such as temperature, pressure, and position sensors) experience physical delays (mechanical response, filtering, signal processing … Read more
Crypto++: A Powerful C++ Encryption Library 1. Introduction Crypto++ is a free C++ library that includes a variety of encryption algorithms and schemes. It was developed by Wei Dai and aims to provide developers with a powerful and easy-to-use encryption tool. Whether for protecting data security in software development or ensuring information security in communications, … Read more
Bob continues his open-source FreeRTOS series. In this sixth part, he will explore security issues and preventive measures when using FreeRTOS. A few years ago, before the advent of the internet, I consulted a friend working at Bell Labs about network security issues. At that time, Bell Telephone Company enjoyed a government-sanctioned monopoly over the … Read more
Click the blue text above to follow us OpenWRT Code Execution Vulnerability Puts Millions of Devices at Risk Welcome to the latest news from the Wind Fire Wheel technical team, I am your reporter Xiao Fengfeng. If you are familiar with the OpenWRT open-source community, you may know that OpenWRT is a very well-known embedded … Read more