Process and device for preventing fraudulent use of terminal software

Abstract

The present invention discloses a method which can prevent the terminal software from being embezzled, the encryption flow is as follows: a plain code, a key1 and a key 2 are set, the key 1 is used to encrypt the plain code to get a password, the key 2 is used to encrypt the key 1 to get a key 3, at last, the password and the key3 are stored in a microprocessor, the key 2 is stored into a memory; the decryption flow is as follows: authentication software reads the password and the key 3 from the microprocessor, and the key2 is read from the memory, the decryption is performed to get the plain code, the plain code is used to judge whether the plain code is as same as the pre-set plain code, if the plain code is as same as the pre-set plain code, then the decryption is successful, otherwise, the decryption is failure. At the same time, a device which prevents the terminal software from being embezzled is disclosed, the device includes a microprocessor used to store the password and the key3; a memory used to store the key2, and a processor unit used to implement the authentication of terminal software. Through the present invention, the terminal scheme provider is enabled to possess a set of completely independent terminal software protection mechanisms.

Description

technical field [0001] The invention relates to a technique for preventing terminal software from being stolen, in particular to a software encryption and decryption method and device. Background technique [0002] As a special commodity, computer software is very easy to be copied and used, so software encryption has become a necessary means to protect software. In the field of mobile communication, the terminal software plays a decisive role in whether the relevant mobile equipment can start and run normally. Therefore, the protection of the terminal software has become a major focus in the field of mobile communication. [0003] The current popular terminal software encryption and decryption technology is the cooperation between the terminal solution provider and the chip developer to protect the terminal software. The chip developer writes the verification code inside the chip, and the terminal solution provider writes the verification code in the external FLASH. When t...

AI Technical Summary

Problems solved by technology

For the terminal solution provider, the terminal software produced must be bundled with the chip used for encryption, thus affecting the profit margin of the terminal solution provider

This encryption method is completely subject to the ciphers and algorithms provided by the chip developer, but the terminal solution provider does not have a completely independent set of protection mechanisms

Images