AES password coprocessor and terminal equipment

Abstract

The invention belongs to the technical field of information security and particularly relates to an AES (Advanced Encryption Standard) password coprocessor and terminal equipment. The coprocessor comprise an operation control module, a key extension operation module, a data storage management module and an STTMRAM (Short Term Memory Random Access Memory) storage module, wherein the operation control module adopts an encryption and decryption data path multiplexing structure, and an encryption and decryption data path multiplexes an original key encryption unit, a byte replacement unit, a row shift unit and an output register unit, the key extension operation module is used for executing key extension and configuration operation according to AES algorithm provisions, a g transformation calculation structure adopts an adder multiplexing structure, and h transformation multiplexes byte replacement unit groups in g transformation, and the data storage management module is used for controlling and storing temporary data and final results in AES algorithm encryption and decryption processes into different partitions of the STTMRAM. The coprocessor is advantaged in that low-resource-overhead encryption hardware architectures such as time division multiplexing and STTMRAM memories are adopted, low-power-consumption AES password co-processing is achieved, computing resources are reduced, and computing efficiency is greatly improved.

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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