Encryption chip and encryption method therefor

Abstract

The invention relates to an encryption chip and method utilizing an MRAM (Magnetic Random Access Memory). The encryption chip comprises a main control chip, a memory and a storage device, wherein the main control chip is connected with the memory and the storage device; an MRAM unit is integrated in the main control chip; and a secure space is arranged in the MRAM and used for storing secret-associated information and performing secret-associated operation. During encryption, all secret-associated information is stored and run in the secure space. According to the encryption chip and method, the information is securer.

Description

technical field [0001] The invention relates to the technical field of information encryption, in particular to an encryption chip and an encryption method thereof. Background technique [0002] All security technologies and software security measures are designed for specific security threats. At present, no technology dares to claim absolute security. They are all committed to minimizing specific threats and maximizing the difficulties for stealers or destroyers. These specific threats include: [0003] 1. Communication between devices is eavesdropped; [0004] 2. The software of the device is replaced with unauthorized software; [0005] 3. The device is implanted with viruses or worms, resulting in failure of operation; [0006] 4. The device is implanted with viruses or worms, resulting in the theft of secret data; [0007] 5. The device is obtained by a malicious person, and the secret data is obtained by disassembling the device. [0008] Among them, the fifth t...

AI Technical Summary

Problems solved by technology

[0003] 1. Communication between devices is eavesdropped;

[0004] 2. The software of the device is replaced with unauthorized software;

[0005] 3. The device is implanted with viruses or worms, resulting in failure of operation;

[0006] 4. The device is implanted with viruses or worms, resulting in the theft of secret data;

[0015] Of course, if software is used for encryption and decryption, the current technology still cannot solve the storage problem well.

Because this algorithm itself cannot be encrypted, it is stored in the storage, and it does not need to be cracked even if it is obtained by the enemy. However, if it is solidified in the ROM inside the chip, the same problem exists.

[0016] Therefore, the existing encryption technology is very insecure when the device is obtained by the enemy

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