Design method of AES encryption chip and computer encryptor

Abstract

The invention discloses a design method of AES encryption chip and a computer encryptor. The AES encryption chip is designed according to requirements of a movable computer encryptor, is composed of a USB and AES interface module, a control module, a plaintext / ciphertext / cipherkey register, a cipherkey expansion module and an encryption / decryption module and can be realized by using design modes of an FPGA integrated circuit, an ASIC integrated circuit and the like. The AES encryption chip not only can realize an AES algorithm but also can be directly connected with a USB interface chip for use; on the premise that encryption / decryption speed satisfies requirements of the USB interface, the scale of each circuit is reduced as much as possible, thereby reducing the area of the chip as well as the cost. A computer encryptor established by the AES encryption chip has the advantages of high safety, high encryption / decryption speed, small volume, convenient movement, convenient use, low price and the like, and can be widely applied to information security affairs of government sectors, enterprise and public institutions and individuals.

Description

technical field [0001] The invention relates to a design method of an information encryption / decryption chip and equipment, in particular to a design method of an AES encryption chip, and a method for constructing a mobile computer encryption machine using the AES encryption chip. Background technique [0002] At present, the encryption / decryption equipment commonly used at home and abroad mainly includes network encryption machines, computer encryption cards, encrypted USB drives, and computer encryption locks. A brief description is as follows: [0003] (1) Network encryption machine: The network encryption machine is a control system based on a safe operating system platform and has advanced communication confidentiality and integrity protection functions. It can have multiple network interfaces, and can be installed at the exit of each LAN in the intranet, or at the interface between the intranet and the public network, or integrated in the network firewall to provide e...

AI Technical Summary

Problems solved by technology

However, the encryption / decryption processing of encrypted USB flash drives and computer dongles is mostly based on single-chip microcomputers, microcontrollers or digital signal processors through software programming, so the speed is relatively slow, and the encryption algorithms used by most encrypted USB flash drives and computer dongles are relatively old (such as DES algorithm), therefore, the security is not high

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