06 In cryptography, the encryption algorithm E and the decryption algorithm D must meet the following conditions to ensure that plaintext P can be securely encrypted and correctly restored! Network Technology Section 1) Reversibility Condition The encryption and decryption must be inverse operations of each other, that is: D(E(P))=PExplanation: Applying the encryption algorithm E to … Read more
Encryption and Asymmetric Encryption Symmetric encryption: The same key is used for both encryption and decryption, such as the AES algorithm.Asymmetric encryption: Uses a pair of keys (public key + private key), where the public key is used for encryption and the private key is used for decryption. RSA is a typical representative. RSA Algorithm … Read more
Source | Embedded Miscellany Today, I will share some commonly applicable skills for advanced embedded software development. Embedded Performance Optimization Cheng Kefe in “Embedded System Design” points out that system-level optimization is key to enhancing the competitiveness of embedded software, which should be approached from three dimensions: code efficiency, resource utilization, and real-time performance. Embedded … Read more
When hearing about priority, those involved in performance optimization often consider whether it can be applied to our business. For example: <strong><span><span>ionice -c1 -n0</span></span></strong>, hoping it can improve application performance. But this may just be wishful thinking. Business Process: The process reads and writes data through read write, to the kernel, then to the VFS … Read more
PMIC stands for Palau Marine Industries Co. To discuss PMIC, we must first talk about a person named Wenhua. Wenhua is the Taiwanese compatriot who provided the second-hand fiberglass longline fishing boats purchased from Taiwan for the COSCO project. His father was a major general in the Kuomintang army. According to him, his father was … Read more
Once upon a time, there were jokes about forgetting how to drive a manual transmission vehicle; perhaps in the not-so-distant future, we will hear similar remarks: I wouldn’t dare touch a car without ADAS. Almost every driver and passenger can feel the tremendous changes that have occurred in automobiles in recent years, from the once-optional … Read more
Source: Niuka Network Abstract In modern vehicles, high-performance computing (HPC) systems for infotainment play a crucial role in enhancing the experience of drivers and passengers by providing advanced features such as music, navigation, communication, and entertainment. This system utilizes technologies such as Wi-Fi, cellular networks, NFC, and Bluetooth to ensure continuous internet connectivity for information … Read more
As a leader among new car manufacturers, Li Auto not only excels in range and space but also hides many surprising “treasure features” in its in-car entertainment system. Today, we will unveil these practical features that you may not know about. 1. Co-Driver Entertainment Screen: More Than Just Watching Movies The co-driver entertainment screen of … Read more
Reported by / Comprehensive report from our newspaper Many people are accustomed to wearing smartwatches, which are not only convenient but also capable of analyzing personal health status in real-time. A Japanese netizen shared that one day he suddenly received a notification on his phone praising him for completing “19 minutes of swimming exercise,” which … Read more
At 6:30 AM in the park, a post-2000s individual wearing a sports tank top practices Baduanjin while following a live stream on their phone, with a smartwatch on their wrist recording their heart rate in real-time. Nearby, Aunt Wang’s radio also broadcasts the same set of exercises. This seemingly incongruous scene has become a snapshot … Read more