| Abstract [eng] |
Software protection is important problem of nowaday. In 2009 the piracy rate reaches 43% of all globe softwares usage, especialy high piracy rate is in Eastern Europe, where 64% of softwares are illegal. This brings hardware-based protection to be one of the prime defense against illegal software usage. The analysis of hardware-based software protection showed that the weakest part of hardware-based protection is communication with software, so dongle method, which computes part of the software inside dongle, could withstand most of reverse engineer attack methods. To prove this Matlab model of distributed dongle-based protection scheme was created and its experimental evaluation showed, that suggested software protection model is resistant against deassembling, debbuging and software cloning attacks. Equally, experimental distributed computing protection dongle prototype was created and tested with two experimental programs against deassembling, debbuging, decompilation and software cloning attacks. This shows that attackers can find calls to the dongle, but can not jump or nop it, such it was done in experimental software protected with traditional commercial dongle. |
