Key protection module

Abstract

The invention discloses a key protection module comprising a key storage circuit used for storing key information sent by a front-end circuit, an anti-disassembly circuit including an anti-disassembly device and an anti-removal device and used for automatically erasing the key information in the key storage circuit when detecting that the key storage circuit moves, and an external power supply or charger-discharger used for supplying power to the key storage circuit. By separately setting the key storage circuit and supplying power to the key storage circuit, keys are not lost when the system is powered off. The anti-disassembly circuit is arranged to prevent criminals from trying to get the key information by disassembling the key storage circuit. The module can be powered in two modes, the implementation methods are simple and diverse, the selectivity is high, and the module is of high portability. Independent key protection hardware is set in order to protect the key information. A key protection module which can store keys separately, protect keys and avoid loss of key information in the case of power failure of the system is truly provided.

Description

technical field [0001] The invention relates to a key protection module. Background technique [0002] With the development of information technology, online transactions and network operations have increasingly penetrated into people's lives. In order to ensure the security of network information, people began to use ciphertext transmission to ensure information security. At present, the commonly used information encryption methods are divided into symmetric key encryption and asymmetric key encryption. Although the symmetric key encryption / decryption speed is fast, but because the key is difficult to manage, it cannot truly protect information security. Asymmetric key encryption replaced. [0003] Asymmetric key encryption is also known as public key encryption. It needs to use different keys to complete the encryption and decryption operations respectively. One is released publicly, that is, the public key is also called the public key, and the other is kept secretly by...

AI Technical Summary

Problems solved by technology

However, there are still some problems in the current asymmetric key encryption. The reason is that the key of the information receiver is usually stored in the cache location of the information receiver, and there is no separate hardware storage location. Electricity will lead to the loss of the private key, communication information cannot be decrypted, resulting in information loss

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