| 摘要 |
The protection system of computer systems against malicious and unauthorized programs by the simple encryption means that programs or other digital contents are encrypted before entering into the system which is protected. The encryption process is uniquely assigned to a given system that is protected and is not repeated in other systems and is based on a simple implementation of "Exclusive OR" mathematical and logical operations between content that is encrypted and tables filled with pre-defined random or quasi-random numbers.All authorized facilities, primarily programs, coming into the system which is protected, regular encrypted and in all memory modules of any type are stored in encrypted form. Decryption is carried out by the same method as the encryption, uniquely assigned a given system that is protected, immediately prior to entering into the processor or within the processor itself, and before the start of the execution or processing.In this way, only authorized programs can be executed in the system, because if they are not encrypted in an appropriate manner, the process of decoding will destroy them. The same applies to other digital content, which as the data entering into the system. Neither they will not be able to be alleged unless they have been encrypted in a way that uniquely corresponds to a given system which is protected. |
