The Hardware Encryption System For Mobile Storage Devices

The development of computer networks and communication technology has raised the requirement for information security. The advance of information security reflects a country's level in information technology. A significant amount of resources and money have been invested in information security worldwide. The demand for information security by individuals, companies and enterprises is increasing. Cryptologic technology, the core of the information security, has attracted a great deal of attention and it be comes a research area of interest.It has been widely accepted by each government and cryptologic experts that cryptologic product is the foundation of the information security and should be developed and manufactured by individual organization. This paper details the design of a hardware encryption system of Mobile storage devices based on DSP chip. The design provided a cryptologic solution with safer and higher protection level for the customer.This project added a embedded systems between the PC and the U-. The Keywords are storaged in the IC card. are prearranged m the outer raaio chip. According to the given Keywords, data encryption is carried out while writing disk, and data decryption is carried out while reading disk, under the preset algorithm of hardware encryption/decryption. In this article, it was adopt symmetric encryption DES (data encryption standard) algorithm, To achieve higher security, developed triple DES algorithm,3-DES is an upgrading of DES. To achieve higher safety, three keywords are set different from each other. Thus, in fact it equals encrypting with a 168-bit keyword. In hardware framework, adopted the TMS320VC54X DSP which is excellent in the calculating and controlling area as the main processor,CH375 as the control chip communicating with the USB interface, finished the communications and the encryption successfully. In dealing with the keyword,the Random Number Generators produced the Keywords,storaged in the IC card when initializtion,read through the card read circuit,as the key unclosed the encryption flat roof.