Teach you step-by-step encryption and decryption technology--registration machine and patch making (1)

Registration machine and patch making the first section of the concept of what is the registration machine? Registration machine is for a software, through a certain algorithm to calculate the registration code program. When we write the registration machine, we generally have to understand the algorithm of the registration code (this is, of course, by tracking debugging to understand), and then use assembly language or other high-level language to restore the algorithm. So everyone can enter the registration code according to their own requirements, such as according to their own name, the company's name registration. At present, shareware has two kinds of registration methods: One is the payment, the author to send all the functions of the Register software, the original shareware did not have certain functions; the second fee, the author gives you a registration code (REGISTERNUMBER), after the registration function is unlimited. Share software registration is basically the same, only limited functionality, or the use of time is limited, or often appear to register the screen, and so on. We usually contact with the sharing software is the second, by calculating the registration code or patching to make the software has registered function. Software cracking is also divided into two kinds: first, patches (patches), the function of these small programs are used to change some specific parts of the software, so their role is usually limited to a software version. Do not use patch designed for different versions, you must be aware that the version number of the software version you are using is the same as patch. If used improperly, will lead to error message, will destroy the program, serious may also crash! Second, serial number (serialnumber) and Registration Code (KEYGENERATOR) is much more secure. Sometimes the old version of the serial number also applies to the new version, even if it can not be used without harm.　　Only in rare cases, the software author will set some traps, when the user entered the blacklist on the serial number, the software will be automatically destroyed and can not be used. Through the patch and registration machine can greatly facilitate the registration of users, there are many programs, its registration code is related to hardware, is installed on each machine has a machine code, to the machine code e-mail to the author, the author of the machine code received by registration procedures to calculate the registration code and then send back to the user, This makes the software to prevent duplication, but caused a lot of users trouble, because as long as the user a reload system or upgrade the motherboard, it is necessary to register again. For this program, beginners can only find their own machine in memory registration code, but this registration code to other machines and can not be used. So ask everyone to write their own registration machine. And some software registration code calculation is very complex, or just a trial version, expired to stop using, can not enter the registration code. This type of software can only be changed by the original program code instructions, but how to make it easy to release restrictions, of course, you can change the byte to tell everyone, with the binary editing tool modification, but very inconvenient. So everyone has to make their own patches, as long as users run the patch, let it help you change the specified code, you can remove the original software restrictions, is not very convenient. 1 2 3 4 5 Next >> content navigation to force (0 votes) (0 Votes) nonsense (0 Votes) The professional (0 votes) The title party (0 Votes) passed (0 Votes) The original text: teach you step-by-step encryption and decryption technology--registration machine and patch making (1) Return to network security home