Efficient mechanism for sharing private data in a secured manner

A framework for secure sensitive data sharing on data mining platform, that includes secured delivery, usage, storage, and data destruction for semi-trusted data mining sharing platform. We propose a proxy re-encryption algorithm based heterogeneous cipher text transformation and user protection method based on virtual machine monitor, which provides for realization of system functions. The framework protects security of users sensitive data effectively and shares data safely. At same time, data owners retain complete control of their own data sound environment for modern Internet information security.