基于DPA的LED非线性部件逆向研究

在军事和商业应用中有很多密码算法是半公开或者不公开的,旨在证明算法保密对密码的安全性提高并没有明显帮助．针对轻型分组密码LED的未知非线性部件S盒,提出了一种基于差分功耗分析的逆向方法,该方法可以利用差分功耗曲线的极性信息来恢复未知算法结构．实验结果表明,在LED的S盒参数未知时,利用功耗采集平台采集算法运行时泄露的旁路功耗信息,可以成功逆向出全部s盒信息,验证了该方法的可行性．     

SECURITY GOVERNANCE IN SOUTH AFRICA

In the ten years since the establishment of South Africa's first inclusive democratic government, an ambitious, extensive and systematic process of reform has been carried out in the governance of security. The process is widely regarded as having been successful and a model for other processes of ‘security sector reform’ in the context of transitions from authoritarian forms of governance to democratic ones.

That this been achieved with hardly a shot fired in anger is a remarkable achievement and a credit to visionary political leadership as well as organisational capacity, in other words to effective security governance.

At the same time, progress has been uneven and sometimes fragmentary, policy intentions and commitments have not always been translated into practice, the end results have not been to everyone's liking, and transformation has engendered its own pathologies. Thus several challenges remain in improving security governance.

This article provides a broad overview of the roles played by the various actors in the governance of the security sector, including the executive, parliament and civil society. It examines the main policy frameworks and touches on organisational transformation, because it is impossible to deal with governance in isolation from these issues. Policy processes and the frameworks they give rise to—in particular—are critical for effective governance. This article deals with the defence, safety and security and intelligence fields. A comprehensive overview would need to include the governance of criminal justice and foreign policy. The article does not seek to make an overall evaluation of governance, but to identify achievements, shortfalls and challenges.     

CIVILIAN PARTICIPATION IN THE EDUCATION AND DEVELOPMENT OF MILITARY OFFICERS

Much is made in the security sector reform literature of the role of civil society as an overseer and monitor of the security sector, contributing to improved accountability and governance. This paper looks at how the notion of ‘civil society capacity’ needs to be disaggregated in order to develop meaningful strategies to assist civil society organisations to impact security sector reforms in complex, post-conflict contexts like the Democratic Republic of Congo. It draws on fieldwork conducted with 200 Congolese civil society groups that are attempting to engage in current security sector reform processes, and looks at which capacities are required to improve oversight by civil society groups.     

车载火控系统标定原理及误差分析

巡航导弹的快速发展改变了现代战争的作战模式,为了实现对该目标的有效拦截,将防空火控系统组网是一种有效手段。文中以车载火控系统组网为例,介绍了火控系统两种标定方法的原理,并结合目标态势对误差进行了分析,结果表明系统标定引入的误差与定位定向设备精度、标定系统距离和目标态势都是相关的。     

基于专利情报分析的Cubic公司MILES激光交战系统研究

在阐述了国内对实兵交战系统需求现状的基础上,文章提出了研究MILES系统的意义,利用Cubic公司的MILES系统专利进行定量分析和定性分析,在此基础上得出结论。MILES系统是成熟的实兵交战系统,其专利价值高,技术领域分布广,模拟效果佳,可以有效帮助部队提升实际作战能力,其专利技术很有借鉴价值。此结果可以用于帮助我国的实兵交战系统技术领域的研究和发展。最后提出一些关于学习MILES系统的建议。     

新形势下警卫部队训练工作探讨

部队战斗力的生成和提高主要依靠平时的军事训练来实现。根据公安警卫部队当前任务实际,着眼新形势下的警卫任务执勤需要,就警卫部队训练对象的层级划分和具体训练目标、训练科目和内容、训练管理体制的建立与完善等问题进行探讨。     

沿海船舶边防治安管理立法问题研究

沿海船舶边防治安管理是维护海上治安秩序稳定的重要手段。为加强海上治安管理,需要通过立法活动赋予公安边防机关特殊的执法权,并以此规范公安边防行政执法活动。分析沿海船舶边防治安管理立法概况及其存在的问题,提出完善沿海船舶边防治安管理立法的建议。     

流行文化对新疆高校大学生价值观影响的结构维度及因素分析

本文采取实证分析方法,通过对流行文化对新疆高校大学生价值观的影响进行问卷调查,得出流行文化对大学生价值观影响的结构维度包括政治价值观、生活价值观、自我价值观和婚恋价值观。在流行文化对大学生价值观的影响因素方面,性别、民族、对流行文化的了解程度、您在上大学前在什么类型的学校就读等影响显著。     

基于协同仿真技术的制退机故障规律研究

制退机是反后坐装置的重要组成部分,它性能的好坏直接关系到火炮战斗力的发挥,为了研究制退机发生故障对火炮后坐运动产生的影响,对制退机故障进行了分析,运用计算流体力学理论和协同仿真技术,建立了制退机MATLAB/FLUENT协同仿真模型,解决了传统火炮后坐计算模型的局限性,与传统计算模型相比,提高了计算精度,得到了制退机内部瞬态流场参数。通过对节制环磨损典型故障进行仿真研究,分析了节制环在不同磨损程度下对火炮后坐运动的影响规律,并对节制环局部压力分布情况进行了简要解析,为进一步对制退机性能退化规律分析研究提供了有效途径。     

基于漏搜信息的剩余水雷评估模型

在声纳搜索水雷任务中,为提高剩余雷数估计的准确性,加强作战辅助决策能力,针对现有评估模型未考虑漏搜区和重叠区,评估结果误差和离散性较大的问题,提出一种修正发现雷数的方法：对任务区建立网格,根据记录航迹获得的覆盖次数分布情况,从中提取出漏搜信息,并用其修正发现雷数向量。该方法有效解决了评估向量误差大、维数偏低的缺陷,显著提高了合理性。对典型情况的大量仿真试验证明,该方法能大幅度提高评估结果的准确性,降低离散性,并具有更强的适应性。