Encryption and decryption system and encryption and decryption method for mobile phone privacy data

Abstract

The invention relates to an encryption and decryption system and encryption and decryption method for private data of a mobile phone. Operation authority of private data of a mobile phone is set. A private data definition module is arranged and is used for carry out encryption level definition on the private data of the mobile phone according to the type of the private data as well as an encryption level needed by a user; the private data are stored into a specific private data storage chip; a secret key generation module is used for obtaining a unique identifier ID of the mobile phone, an IEMI number of an SIM card, an SN number of the storage chip of an encrypted data storage module and a first character or last character of a file title of the encrypted data and generating a matrix secret key to carry out encryption and decryption on the private data of the mobile phone. Therefore, the private data of the mobile phone can be encrypted or decrypted rapidly, safely, and stably.

Description

technical field [0001] The invention relates to the fields of mobile communication and information security, in particular to a high-reliability and high-security encryption and decryption system and encryption and decryption method for mobile phone private data. Background technique [0002] Mobile phones are the most important and commonly used electronic terminal products for wireless mobile terminals. Wireless mobile terminals realize wireless Internet access by inserting SIM cards. With the rapid development of wireless mobile technology, mobile phones have also continuously developed from the most primitive wireless communication functions to Functions such as storage, browsing, playback, shooting, surfing the Internet, positioning, and mobile payment have become indispensable electronic terminal products for modern people's life and work; however, mobile phone data security has also become the most worrying issue for modern people. [0003] In the prior art, to ensure...

AI Technical Summary

Problems solved by technology

The usual way to achieve this is: set a security password (it can be a password or a pattern) for user login authentication; after passing the authentication, you can enter the private space, and in the private space you can specify files to encrypt, or you can encrypt Encrypted files are decrypted, but the main disadvantage of this method is that the encryption and decryption performance is not good. For some files, full-text encryption is required, and the performance of the software is low. For a large number of pictures or videos, even if they are partially encrypted, they need to be viewed in real time. There are also performance problems when accessing pictures; in addition, the encryption security is not high. Currently, the encryption software on the market often only has one layer of encryption, and the encryption key is relatively fixed, so there are still more security risks. For example, many login authentication passwords It is directly stored on the mobile phone, which is easy to obtain in itself, and can be directly decrypted after passing the authentication. In addition, in order to bind the data to the SIM card of the mobile phone, many of them directly use the IMEI number of the SIM card as the key, and some use The phone number is used as the key, and some use the device ID as the key. These are relatively easy to crack for those who are good at cracking. If the encryption requirements for mobile phone privacy data are relatively high, these methods will not meet the actual encryption requirements.

[0004] Chinese patent CN103559453A discloses a mobile phone data hardware encryption protection method and system. The method and system use the mobile phone device ID, the IMEI number of the SIM card, the SN number of the storage chip, and the name of the source file as dynamic parameters to call the key generation module Cooperate with the AES advanced encryption and decryption module to generate encryption and decryption keys with logical calculations, and call the hardware encryption and decryption module to encrypt and decrypt files or data for source files. Insufficient technology, does not occupy system resources, and the encryption is stable, reliable and safe, but there are still some defects in the mobile phone data encryption technology, for example, its encryption system and method do not involve the management of mobile phone encryption rights, nor involve The definition and encryption level of mobile phone privacy data, its advanced encryption algorithm and module encryption are complicated, and the decryption and reading speed is slow

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