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Memory chip with encryption function and anti-piracy method

A storage chip and memory technology, applied in instruments, electrical digital data processing, computer security devices, etc., to achieve the effects of reducing costs, increasing encryption functions, and reducing workload

Inactive Publication Date: 2011-12-21
方波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, for a system that does not have an encryption function, if the developer wants to add an encryption function to the system after the circuit board design is completed, the existing memory chip with encryption function obviously cannot meet the requirements, because Existing memory chips will place special requirements on software and hardware systems other than themselves

Method used

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  • Memory chip with encryption function and anti-piracy method
  • Memory chip with encryption function and anti-piracy method
  • Memory chip with encryption function and anti-piracy method

Examples

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Embodiment Construction

[0029] The preferred embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] The memory chip with encryption function of the present invention, such as image 3 As shown, it includes a data bus and a storage unit, and also includes an encryption module connected in parallel with the storage unit on the data bus, and the encryption module includes a write-only key area, a first encryption operator and an encryption result memory.

[0031] The write-only key area is used to store the first key, the write-only key area is directly connected to the data bus of the memory chip, the first key can be written through the data bus, but the The first key cannot be read via the data bus. When the electronic product including the memory chip leaves the factory, the memory chip needs to be initialized. During the initialization process, the write-only key area of ​​the memory chip is written with the first key,...

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PUM

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Abstract

The invention discloses a storage chip with encryption function and an anti-piracy method. The storage chip includes a data bus and a storage unit, and also includes an encryption module connected in parallel with the storage unit on the data bus; the encryption module includes a write-only key area , a first encryption operator and an encryption result memory; the write-only key area is preset with a first key; the first encryption operator is used to calculate the first encryption by encryption operation according to the first key and the encrypted original text Ciphertext; the encryption result memory is used to store the first encrypted ciphertext; the storage unit includes a second key and a second encryption operator. The storage chip of the present invention does not require special design on the hardware, and does not require additional hardware drivers on the software, which reduces the cost and the workload of development, and does not change the hardware circuit board and underlying hardware drivers for existing systems without encryption functions. The only way to increase the encryption function under the premise of the program.

Description

technical field [0001] The invention relates to a memory chip and an anti-piracy method, in particular to a memory chip with encryption function and an anti-piracy method using the encryption function memory chip. Background technique [0002] At present, the problem of illegal piracy of electronic systems is becoming more and more serious. Illegal cracking and copying of hardware and software systems will bring huge time and economic losses to system designers. Therefore, designers pay more and more attention to protecting their own intellectual property rights through technical means in design. Pirates copy the entire electronic system by copying the hardware and software of the target system; the copying of the hardware by the pirates is mainly copying the board, and the main method is to reverse the circuit board diagram of the target system through optical photography and convert it into production files, regenerate the same circuit board, purchase the same components ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/02G06F21/70
Inventor 方波李浩鹏
Owner 方波
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