The Design Of Security U-Disk Based On Z8HM2 IC

As the rapid development of information technologies, much more emphasis was taken on the problem of data securities. With greater capacity and lower cost, however, USB disk is easy to be read by others and cannot satisfy the demands of security storage or applying of bulks of data. With the analysis of such demands at all areas in the market, the author has built an application model of extension possible, on which one secured U-Disk was designed, which has its standpoint of higher security, extension possibility, easy-going as well. On facing new applying and new hardware environment, secured U-Disk will easily meet the needs of applying via SDK (Software Development Kit) with a little or even without changes which will dramatically lower the cost, offering a uniform solution to numbers of demands of great capacity and security storage market. With a general narrate basis, the thesis explains USB device initialization, BOT (Bulk Only Transport) protocol implement, SDK interface design and client software for windows. Based on security IC named Z8HM2 of Nationz Technology Corporation, a full set of solutions were designed and realized, which provides basic functions of command control interface and client software, and enable to support manifold encrypt arithmetic identified by national secret bureau, such as AES, SCB2, one widely applied in the demands of mobile officing, electronic commerce, electronic government, internet bank as well as cloud computing and so on.