PCB Factory: Single Chip Decryption and Chip Failure Analysis

PCB Factory: Single Chip Decryption and Chip Failure Analysis

Circuit board manufacturer, circuit board design, PCBA processing manufacturer explain Circuit board factory: single chip microcomputer decryption and chip failure analysis

Electronic information technology is the core of today's new technological revolution, and chips are the basis for the development of electronic information technology. At present, chip decryption (also known as single-chip decryption and IC decryption) is mainly used in PCB copying, program research, wafer foundry, single-chip model identification and chip failure analysis. Understanding the decryption principle of single chip microcomputer and the factors causing chip failure to improve product reliability is a necessary guarantee for the application of electronic information technology.

Decryption Technology of Single Chip Microcomputer

Single chip computer attackers use special or self-made equipment, make use of loopholes or software defects in the design of single chip computer chips, extract key information through various technical means, and obtain the program in the single chip computer, which is the single chip computer decryption technology. We used to call CPLD decryption and DSP decryption as MCU decryption. Although the decryption of SCM is on the edge of the law, it is not a very simple process, which requires our decryption personnel to have macro thinking and micro technology.

From a macro point of view, the decryption of SCM is the same as that of equipment production, which requires certain engineering specifications. With the specifications above the engineering, we can carry out the decryption work in an orderly manner. From a micro perspective, the decryption of SCM is a sophisticated and sophisticated high-end technology, which requires the crackers to have solid reverse engineering knowledge and rich decryption experience. Otherwise, the decryption is likely to fail, and the "master piece" will be lost. The decryption methods include: software attack, electronic detection attack, fault generation technology and probe technology. According to the different models of IC decryption, the decryption methods used are different. The decryption process starts from the hardware, which is the basis of the decryption technology. Only by understanding the details of each component of the hardware can we understand the software. Different MCU instruction structures are different. If we want to decrypt the software, this step is necessary. After we know the relevant information between the hardware, we can operate the software. The so-called operating software is to deal with the memory ROM inside the MCU and obtain the byte code that must be used for chip cracking during the communication process.

Chip Failure Analysis Technology

Chip failure analysis belongs to the category of chip reverse engineering development. Generally speaking, chip failure is inevitable in the process of development, production and use. However, once some SMEs have problems with materials, it is difficult to find the channel and source of the year, or even to guarantee the authenticity of materials. The chip is always damaged when it is used, so it is considered that the chip quality is poor, but the root cause of the damage is not analyzed and blind conclusions are drawn. The chip from a circuit board manufacturer still broke. It was discovered many years later that their own circuits lacked protection design. PCB manufacturers, PCB designers and PCBA processors will explain to you PCB manufacturers: SCM decryption and chip failure analysis.