"老百万"的"安全经"

坚守"三心""九不超" 在保康县政府车队,有一位"汽车百事通"饶万兵师傅.他的安全经验是坚守"三心"和"九不超"."三心"即开车要安心、对车要耐心、修车要细心."九不超"即:一是上、下坡道不超;二是人多路窄不超;三是前车不让不超;四是道滑路险不超;五是桥梁道口不超;六是转弯拐角不超;七是视线不良不超;八是对面有车不超;九是情况不明不超.     

Formalization of Fault Analysis and a New Approach of Fault Detection

Introduction Since Boneh et al[1]announced a model forbreaking public key cryptographic schemes by tak-ing advantage of random hardware faults in 1996,fault analysis has become an important aspect ofcrypto-analysis method. Fault analysis inducesfaults in tamper-resistant chips by means of radia-tion, X-rays, micro-probing or cut wires, so thatsome information of keys could leak from chips. Biham &Shamir applied fault attack to the ex-tension of block cipher cryptosystems such asDES, and call…     

一类SPN结构密码设备的故障注入攻击技术

提出了一种有效的故障注入攻击技术,能够攻击一类使用特定结构SPN密码的设备．这种攻击方法基于字节错误模型,仅需要少量故障密文即可攻破一类具有特定置换层的SPN密码算法．分析给出了故障和特定置换层如何导致秘密信息泄露的原因．同时,对于具体的密码算法ARIA和PRESENT进行了攻击实例．     

克拉斯货车发电机故障一例

1.故障现象: 一辆俄罗斯生产的克拉斯(KRAZ)货车在发动机低速运转时电流表指示充电,但加大油门汽车以较高速度运行时,电流表指示大电流放电,即发电机不能发电。 2.故障检测: 起初认为是电压调节器故障,后发现励磁线圈的引出线头与滑环松动,用手一拉线头与滑环脱离。     

浅析现阶段网吧消防管理的难点及防范对策

随着科技的高速发展，互联网信息的普及，网吧已成为一项热门的行业。但是，近年来，“网吧”等互联网上网营业场所过多过滥，业主无视消防安全，消防管理无序，安全隐患突出，严重威胁了人民生命财产的安全，扰乱了社会秩序。一些所谓的“问题网吧”、“黑网吧”大量衍生，无证照、手续不全的网吧数量还在不断上升，埋下了致灾的隐患，由此造成的重、特大火灾事故在发达地区和不发达地区均有发生。2002年6月16日，     

集装箱装卸桥作业时危险性评价及对策

集装箱装卸桥(以下简称桥吊)是集装箱专用码头的主要装卸工具,它的好坏直接影响到集装箱码头的正常运转.当一台新桥吊投产十多年以后,其老化现象将十分严重,虽可经过多次技术改造,但频繁作业仍使其故障率很高且时有掉箱事故发生.本文利用Kennth J.Graham和Gilbert F.Kinney提出的作业条件的危险性评价对桥吊作业危险性进行评价,以便根据评价得到的客观结果提出有效的对策.     

船舱及密闭空间缺氧窒息事故的预防

装有粮食、原木、钢材、矿石、煤炭、蔬菜等一类货物的船舱和一些密闭空间内具有缺氧的危险性,人一旦进入未经通风和检测的这种船舱和空间,就有可能发生窒息事故.1977年9月,天津港发生了一起生铁船舱缺氧窒息事故;1980年,秦皇岛港发生了一起玉米船舱缺氧窒息事故;1983年,张家港港发生了一起原木船舱缺氧窒息事故等等.船舱和一些密闭空间常出现缺氧及二氧化碳浓度升高现象,主要有以下5个方面的原因.     

油船进厂修理中的消防安全

船舶经过一段时间的运营后．或多或少会出现一些问题，而在船舶进厂维修过程中．油船发生火灾爆炸事故的概率比较大．原因就在于油船同其它船舶有许多不同之处，为此，特将油船进厂修理过程中一些单位的经验做法．作一下梳理，变成一个工作“流程”。以供参考。     

On sequential composition of precise zero-knowledge

Precise zero-knowledge was introduced by Micali and Pass in STOC'06.This notion captures the idea that the view of any verifier in interaction can be reconstructed in almost time.Pass also obtained a sequential composition lemma for precise zero-knowledge protocols.However,this lemma doesn't provide tight precisions for composed protocols.In this paper we further obtain a sequential composition lemma for a subclass of precise zero-knowledge protocols,which all satisfy a property:their simulators use the cod...     

Precise zero-knowledge arguments with poly-logarithmic efficiency

Precise zero-knowledge was introduced by Micali and Pass in STOC’06. This notion captures the idea that the view of a verifier can be reconstructed in almost same time. Following the notion, they constructed some precise zero-knowledge proofs and arguments, in which the communicated messages are polynomial bits. In this paper, we employ the new simulation technique introduced by them to provide a precise simulator for a modified Kilian’s zero-knowledge arguments with poly-logarithmic efficiency (this modification addressed by Rosen), and as a result we show this protocol is a precise zero-knowledge argument with poly-logarithmic efficiency. We also present an alternative construction of the desired protocols.