Lightweight dual-mode compatible AES encryption and decryption module and its method

Abstract

The invention discloses a light-weight dual-mode-compatible AES encryption and decryption module and a method thereof. The encryption and decryption module comprises a data and control signal reading module, a determination selection module, and an AES calculation module. The data and control signal reading module is used for reading a corresponding control signal and reading to-be-encrypted data and an encryption secret key after being triggered by a data reading-in control signal; the determination selection module is used for determining an encryption and decryption control signal and a mode selection control signal to select whether a current operation is an encryption operation or decryption operation and whether a current operation is a 256-bit secret key encryption and decryption operation or a 128-bit secret key encryption and decryption operation; and the AES calculation module is used for carrying out encryption and decryption on the to-be-encrypted / decrypted data by using round calculation based on selection by the determination selection module. According to the invention, under control of the control signal, the encryption and decryption operations with the 128-bit-length and 256-bit-length secret keys can be realized; and the partial structure multiplexing is realized. Therefore, the realization result of a ten-thousand equivalent gate level and the throughput capacity with the tens-of Mbps level can be realized.

Description

technical field [0001] The present invention relates to an AES encryption and decryption module and its method, in particular to the hardware implementation and method of a lightweight dual-mode compatible AES encryption and decryption module with light weight, small area, balanced throughput and compatible 128 / 256bit length key . Background technique [0002] Since the AES (Advanced Encryption Standard, Advanced Encryption Standard) algorithm was adopted by NIST as a standard algorithm in 2001, it has been adopted as an encryption algorithm by various communication systems because of its balanced advantages in security, complexity, and speed. , to improve data confidentiality and integrity. [0003] The realization of AES algorithm mainly includes software realization and hardware realization. With the improvement of communication system integration, hardware implementation has been paid more and more attention and demand in recent years. In addition to large-scale conve...

AI Technical Summary

Problems solved by technology

The lightweight AES algorithm implementation structure still lacks a variety of key length compatible implementation designs, which cannot provide a higher security level for lightweight systems with high security requirements, and the low throughput of some design structures severely limits the scope of use

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