DRM technology allows content to be distributed in a controlled manner. Therefore, appropriate security mechanism is required. The Mobile DRM System is same as the general DRM system. Encryption technology is in use digital contents packaging. In case of Mobile DRM system, secure distribution and store of packaging encryption key is important. In this paper, we propose a DRM framework, SDRM (Secure mobile Digital Rights Management)*, to ensure secure distribution of mobile contents and rights. We considered being a secure DRM system to contain appropriate security solution.