A new video encryption method based on modified OFB mode

Abstract

A new design of video stream encryption system is introduced，combined with the interleave technology，which is widely used in wireless communication. This paper provided a new key distribution and management system and a modified Output-Feedback encryption operate mode. The provided method keeps the structure of the transport steam packet, has a low protocol cost and a high level of security, compatible with the AES and SM4 encryption algorithm, thus can be easily implemented in hardware and widely used in wireless image transmission and digital video broadcasting system.

Keywords

• ofb
• transport stream(ts)
• encryption
• key distribution