An Efficient Scalable Video Encryption Scheme for Real time applications

Abstract

This work describes an efficient selective encryption scheme for H.264/Scalable Video Coding (SVC). The main feature of this scheme is that it makes use of the characteristics of SVC and fully meets the encryption requirements. The encryption procedures are carried out at the Network Abstraction Layer (NAL) level. The proposed scheme performs encryption in three domains: Intra-Prediction mode (IPM), residual data and motion vector difference values. For enhancement layers, temporal scalability and spatial/SNR scalability are distinguished. Experiments were performed to verify the proposed method using the joint scalable video model (JSVM), and the experimental results show that the proposed method protects the SVC streams effectively and supports full scalability and can guarantee the robustness to transmission errors.