Many evidences have showed that some intelligence agencies(often called big brother)attempt to monitor citizens’communication by providing coerced citizens a lot of subverted cryptographic algorithms and coercing them to adopt these algorithms.Since legalized services on large number of various applications and system architectures depend on digital signature techniques,in the context some coerced users who use double authentication preventing signatures to design some novel digital signature techniques,have some convincing dissertations to defuse requests from authorities and big brothers creating some corresponding subverted signatures.As rapid progress in quantum computers,National Security Agency advisory memorandum and announcement of National Institute of Standards and Technology procedures from standardization focus on some cryptographic algorithms which are post quantum secure.Motivated by these issues,we design an algorithm substitution attack against Fiat-Shamir family based on lattices(e.g.,BLISS,BG,Ring-TESLA,PASSSign and GLP)that are proven post-quantum computational secure.We also show an efficient deterable way to eliminate big brother’s threat by leaking signing keys from signatures on two messages to be public.Security proof shows that our schemes satisfy key extraction,undetectability and deterability.Through parameters analysis and performance evaluation,we demonstrate that our deterring subverted Fiat-Shamir signature is practical,which means that it can be applied to privacy and protection in some system architectures.
LIU JinhuiYU YongWU FushengCHENG YuehuaZHANG Huanguo
随着4K时代的到来,贵州广播电视台率先完成全国第一辆满足SMPTE 2110音视频IP国际标准的4K全媒体超高清转播车。整车音频系统依托于IP领域先进技术和音频领域前沿制作特点,改变传统音频系统设计理念,实现音频系统IP化信号调度和工程配置,包括现有设备以及未来待改造符合SMPTE 2110音视频IP国际标准的演播室、演播厅、户外大型赛事转播、重要实况直播及录制现场等,实现信号及设备“万物互联”。因此,从安全性、先进性以及全媒体音频制作特点出发,对4K全媒体超高清转播车的音频系统设计、运用场景以及AOIP(Audio over IP)对未来专业音频工作带来的改变进行探讨和思考。
