Embedded CPU anti-differential power consumption analysis device and method

Abstract

The invention discloses an embedded CPU anti-differential power consumption analysis device and method. The device comprises an embedded CPU, a random interrupt generation module, a random instructiongeneration module and a true random number generator. The true random number generator is used for generating a true random number, the random interrupt generation module is used for generating a random interrupt signal according to the true random number, the random instruction generation module is used for generating a random instruction according to the true random number, and the embedded CPUexecutes the random instruction according to the random interrupt signal. According to the invention, the random instruction insertion mode is used, the power consumption generated when the embeddedCPU executes encryption and decryption operation is disturbed, and under the condition that an original embedded CPU is not modified, the encryption and decryption processes of DPA protection and CPUprotection are carried out on the embedded CPU, and therefore when a user uses the embedded CPU for encryption and decryption, an attacker can be prevented from cracking a secret key through DPA, andencrypted information is protected against leakage.

Description

technical field [0001] The invention relates to the technical field of system safety protection, in particular to an embedded CPU anti-differential power consumption analysis device and method. Background technique [0002] With the development of the information industry and the gradual arrival of the world of the Internet of Things, information security has become a very important part of chip design. In order to ensure that information is not leaked during transmission, various encryption algorithms are often used to convert information into ciphertext before transmission. Even if an attacker intercepts the sent information, he cannot convert the ciphertext into plaintext due to the lack of a key. However, in recent years, an attack method called a side-channel attack, which allows attackers to easily obtain keys and encrypted information, has been frequently employed. This method deciphers the key of the encryption algorithm by analyzing the time, electromagnetic radia...

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Problems solved by technology

[0006] The invention provides an embedded CPU anti-differential power consumption analysis device and method, which are used to solve the technical problem of stealing software encryption keys by analyzing the power consumption of the processor in the prior art

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