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Дома > Control / MCU > How to crack the decryption chip?

How to crack the decryption chip?

Время обновления: 2020-03-30 12:16:26

A single chip microcomputer (MCU) usually has an internal EEPROM/FLASH for storing programs and working data.What is called single-chip decryption? If you want to read the program illegally, you must unlock the password to read it out. This process is often called single-chip decryption or chip encryption.

In order to prevent unauthorized access or copy of the MCU program, most MCU with encryption lock location or encryption bytes to protect the program;If located in programming can be enabled (lock), cannot use average programmer directly read procedure in the MCU, MCU attacker with the aid of special equipment or homemade equipment, the use of loopholes in the design of the microcontroller chip or software defect, through a variety of technical means, can extract key information from chips, for single chip microcomputer program within this is called single chip decryption.Most of the microcontroller program written into the microcontroller, engineers in order to prevent others illegal theft, so give encryption, in order to prevent others read the program.

Single-chip encryption and decryption can be divided into two categories, one is hardware encryption and decryption, one is software encryption and decryption.Hardware encryption, for single chip microcomputer, is generally SCM vendors will be encrypted fuse curing in IC, fuse is encrypted and unencrypted state, if in a state of encryption, general tool cannot be read inside the IC program content, to read the content, the hardware is involved, must be professional in hardware decryption tool and professional engineers.

decryption chip

In fact, any single chip from the theory, the attacker can use enough investment and time to use the above methods to break.This is the basic principle of the system designer should always keep in mind, therefore, as a electronics design engineer is very necessary to understand the current SCM attack of the latest technology, to achieve the enemy and know yourself, know fairly well, and can effectively prevent the spend a lot of money and time worked so hard to design their own products being fake things happen overnight.

As we all know, at present all involved in the field of single-chip decryption is generally for product replication, really used to do research and learning, can not say no, but quite rare. So, want to crack the single-chip decryption chip crack, you have to know the principle of single-chip decryption chip crack.

Тег: chip


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