Rapid development in it today, a number of outstanding software, but many others charge of the software has other serious crimes against the interests of software developers. Thus in order to protect the intellectual property rights to encryption software is very necessary. Current market software encryption key : soft encryption, disk encryption keys, encryption cards and encryption software dog. In many encryption software, to get families is the long software dog. Jiamigou software is installed in the computer by a parallel interface on the outside and a small box of software development tools, which play a role in the protection of software intellectual property. Jiamigou internal circuits and the study of the various encryption algorithms, encryption software is a branch of the procedure. Make a intelligent software Jiamigou design and production. The major design study is the use of the company's Rainbow "- dog" against a variety of application needs, design programmes and reasonable software encryption algorithms for encryption software to protect. And a brief description of the types of encryption software, a comparative analysis, there are several software Jiamigou development stage, the Jiamigou specify the hardware and software principles. And analysis and decryption technology, and accordingly made a series of anti-bound measures. Encryption software development to the present, has experienced four generations. First generation signal encryption software dog role of the device used up simply adopting some resistance, diode, and relatively simple method of easily being declassified. Second generation software used dogs TTL low consumption, such as logic coms film components in circuit made some encryption, the prosecution also to more than one generation software dog procedures decryption difficulty naturally increased. 3G encryption locks, the so-called "programmable" encryption locks. Introduced Pal, Peel, Gal, and other logic devices. Fourth-generation software in the third-generation software dog enough basis to a Chanpianji chips, such as PIC16C5X. The chip, the algorithms are specific procedures may be read out key data encryption used to counter the logic analyser. It can be said that dogs to the fourth generation of software has been very mature. In this technology, the software development companies have also joined their dog circuit design, a feature of their products.
俺絕對不是抄樓上的!!!!
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