高码率视频组播的轻量级签名非均匀认证保护

发布时间：2018-07-13 21:39

【摘要】：针对高码率视频直播系统中轻量级签名认证方案开销过大的问题,提出一种非均匀认证保护方法。利用视频编码的帧间依赖关系量化数据包的认证重要性,以数据包保密级别和证据取值范围为约束条件,差异化不同重要性和密钥周期阶段下数据包的证据份额,减少了认证证据的消耗和认证异常的损失。仿真分析表明,在预设数据包保密级别为2112时,认证信息的通信和计算开销分别下降了67.0%和68.3%,可以满足10 Mbps视频组播认证的安全和性能需求。
[Abstract]:Aiming at the problem that the cost of lightweight signature authentication scheme in high bit-rate video direct broadcast system is too high, a non-uniform authentication protection method is proposed. The authentication importance of data packets is quantized by the inter-frame dependency of video coding. Taking the security level of packets and the range of evidence values as the constraint conditions, the difference importance and the evidence share of the data packets in the key cycle stage are different. Reduces the consumption of authentication evidence and the loss of authentication anomalies. Simulation results show that the communication and computing overhead of authentication information can be reduced by 67.0% and 68.3% respectively at the default packet security level of 21 12, which can meet the security and performance requirements of 10 Mbps video multicast authentication.
【作者单位】：中国科学院声学研究所
【基金】：国家自然科学基金资助项目(60972082) 国家科技支撑计划资助项目(2011BAH11B05) 中国科学院战略性先导科技专项基金资助项目(XDA06010302)
【分类号】：TP393.08

【参考文献】