Joint AES and RSA for High-Definition Image Stream Safety with KeyManaged

High definition images have been applied in more and more usage scenario. Meanwhile, the demands for the safety for these image data are also increasing. In this paper, we firstly investigated the features that existing in the high definition images and then studied the theory of the AES and RSA algorithm. However, the AES algorithm exist some weaknesses when being used, such as effectiveness in running and safety with used keys. In connection with the safety of image data and the used keys in the AES, we made some conversion on the AES algorithm and combined the AES and RSA algorithm to provide protection with centralized key management frame. For operating convenience, the paper introduces Data Stream Recognition mechanism to instruct image stream with added stamps. After this, the safety for image data stream and the efficiency for handing image are both enhanced. Our outcome can be applied in data protection, especially being used in embedded operating system.