A kind of AES encryption coprocessor and terminal equipment

Abstract

The invention belongs to the technical field of information security, and specifically relates to an AES cryptographic coprocessor and terminal equipment, including: an operation control module, a key expansion operation module, a data storage management module, and an STTMRAM storage module; the operation control module adopts an encryption and decryption data path The multiplexing structure, the encryption and decryption data path multiplexes the original key addition unit, byte replacement unit, row shift unit and output register unit; the key expansion operation module is used to perform key expansion and configuration operations according to the AES algorithm, Among them, the g transformation calculation structure adopts the adder multiplexing structure, and the h transformation multiplexes the byte replacement unit group in the g transformation; the data storage management module is used to control and store the temporary data and the final result in the encryption and decryption process of the AES algorithm to the STTMRAM memory in different partitions. The invention adopts time-division multiplexing, STTMRAM memory and other low-resource-overhead encryption hardware architectures, realizes AES cryptographic co-processing with low power consumption, reduces computing resources, and greatly improves computing efficiency.

Description

technical field [0001] The invention belongs to the technical field of information security, and more specifically relates to an AES cryptographic coprocessor and terminal equipment. Background technique [0002] With the continuous development of the Internet of Things (IoT) and System on a Chip (SoC), as well as the continuous adoption of advanced technologies, the design of IoT chips requires more and more security considerations. Due to the large amount of information interaction, data storage and data security are very important issues in the Internet of Things. In terms of security, the Advanced Encryption Standard (AES) algorithm is widely used in digital signatures, document encryption, email encryption, and transmission encryption due to its advantages of fast speed, low memory requirements, flexibility, and easy maintenance. [0003] AES is an iterative symmetric block cipher algorithm that uses the same original key for encryption and decryption. The block data ...

AI Technical Summary

Problems solved by technology

[0004] The invention provides an AES cryptographic coprocessor and terminal equipment, which are used to solve the technical problem of high power consumption of the existing AES cryptographic coprocessor due to its complex structure

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