information security

Java Cryptography Architecture: Providing Multiple Encryption Algorithms to Meet Data Encryption and Security Authentication Needs

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Java Cryptography Architecture: Providing Multiple Encryption Algorithms to Meet Data Encryption and Security Authentication Needs

In Java development, data security is of utmost importance, and the Java Cryptography Architecture acts as a reliable “security guard,” providing various encryption algorithms to ensure data safety. Below, I will guide you through how it meets the needs for data encryption and security authentication. 1. What is the Java Cryptography Architecture? Let’s first discuss … Read more

Comprehensive Analysis of Java SHA-256 Algorithm

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Comprehensive Analysis of Java SHA-256 Algorithm

Comprehensive Analysis of Java SHA-256 Algorithm 1. Theoretical Background 1.1 Basics of Hash Functions The hash function is a core component of cryptography, with the following key properties: Determinism: The same input will always produce the same output Efficiency: Quickly computes the hash value for inputs of any length Pre-image Resistance: It is infeasible to … Read more

Smart Speakers Can Hear Your Passwords

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Smart Speakers Can Hear Your Passwords

Click the blue text to follow us In the past two years, people have been concerned that popular mobile apps and smart speakers/voice assistants could leak personal privacy information, but the reality is scarier than we imagined. Recently, researchers from the University of Cambridge discovered that any smart device capable of receiving voice commands (such … Read more

We Experienced an Apple Smart Home Apartment and Discovered Several Truths About HomeKit

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We Experienced an Apple Smart Home Apartment and Discovered Several Truths About HomeKit

At the entrance, there is a password lock on the door handle, and as long as the phone has power, it can issue commands to Siri; stepping into the foyer, saying “I’m home” to Siri lights up the lights throughout the house, and the air purifier’s fan starts to run smoothly—this is a preset HomeKit … Read more

Smart Home or Foolish Home?

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Smart Home or Foolish Home?

In the last issue of >>> Advanced Windows and Doors <<<, it was mentioned that in the latest season of “Dream Home Makeover,” there was an episode about the renovation of a school district house that utilized moorgen’s smart lighting system. Different working modes will have different lighting to adapt to the current scene. Everyone … Read more

Common Application Layer Protocols: Analyzing HTTP from a Traffic Perspective (Part 3)

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Common Application Layer Protocols: Analyzing HTTP from a Traffic Perspective (Part 3)

Introduction In the previous article, “Common Application Layer Protocols: Analyzing HTTP from a Traffic Perspective (Part 2),” we introduced the concept, principles, development history, traffic decoding, and simple analysis methods of the HTTP protocol from a traffic analysis perspective. We also discussed two important metrics: request methods and status codes. Today, we bring you the … Read more

After 10 Years of Using Windows, I Finally Switched to Linux

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After 10 Years of Using Windows, I Finally Switched to Linux

Author | Shalitha SurangaEditor | Wan JiaTranslator | Zhang JianxinI am a fan of Windows 98, 2000, XP, 7, and 10. However, I ultimately decided to use Ubuntu permanently. My Ubuntu Desktop Without an operating system, a computer becomes a worthless device, as the operating system serves as the intermediary interface between the user and … Read more

Emergency Response: Linux Intrusion Investigation Strategies

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Emergency Response: Linux Intrusion Investigation Strategies

0x00 Introduction When a company experiences a hacker intrusion, system crash, or other security incidents that affect normal business operations, it is crucial to respond immediately to restore the company’s network information system to normal operation in the shortest time possible. Furthermore, it is necessary to investigate the source of the intrusion, reconstruct the incident … Read more

Warning on ECU Diagnostic Pitfalls: Is the 0x27 Key Algorithm the ‘Bricking’ Culprit? Discover the Efficiency Doubling Secrets of 0x28 Communication Control, Lessons Learned by Engineers!

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Warning on ECU Diagnostic Pitfalls: Is the 0x27 Key Algorithm the 'Bricking' Culprit? Discover the Efficiency Doubling Secrets of 0x28 Communication Control, Lessons Learned by Engineers!

In automotive electronic diagnostics, secure access (0x27) and communication control (0x28) are two key technologies. The former protects ECU data security, while the latter optimizes communication efficiency. Mastering these is essential for becoming a diagnostic expert! 1. Secure Access (SID 0x27): The ECU’s ‘Password Lock’ Mechanism The ECU stores critical vehicle data (such as program … Read more

BMW 328i ECU Reprogramming Issues: Idle Shaking, Inconsistent RPM, and Acceleration Problems!

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BMW 328i ECU Reprogramming Issues: Idle Shaking, Inconsistent RPM, and Acceleration Problems!

Vehicle Condition: A BMW 328i with a mileage of over 220,000 km. The engine experiences idle shaking, fluctuating RPM, and sometimes fails to accelerate, emitting black smoke at times. Fault Diagnosis: Using a BMW-specific diagnostic tool, three fault codes were retrieved: 16685 (Cylinder 1 Misfire) 16686 (Cylinder 2 Misfire) 16688 (Cylinder 4 Misfire) It was … Read more