From SDProtector Tech:
SDProtector is a powerful tool offering both software developers and distributors a protection of software products against unauthorized copying, use, and distribution. SDProtector was designed with ease of use and high speed as a priority without sacrificing high levels of protection. It offers four different methods of code encryption protection. In addition, it uses RSA 1024 algorithm, API functions, new anti-debug tricks, active protection against dumping from memory and tracers. With SDProtector it's easy to turn your application in "try-before-you-buy" versions with little effort, offering everything to guarantee a maximum protection against piracy, backdating, reverse-engineering, or any kind of tampering.