职称英语考试阅读判断试题练习
13.Crypto 密码
Technology is a beauty. We eagerly adopt its pleasure, preferring to cope with the drawbacks on the morning after. Who can resist innovations like mobile phones and networked computers? They put anyone, anywhere, within earshot, and zip information whether an expression of love, a medical chart or a plan for a product rollout around the world in a heartbeat. Unfortunately, its all too easy for eavesdroppers to snap up those messages and conversations en route to their intended receiver. We think were whispering, but were broadcasting.
In this case, theres an antidote: cryptography, the use of codes and ciphers to protect information. If you scramble information before its sent, eavesdroppers cant hear what you say or read what youre written. The good news is that, after decades of struggle against a government opposed to its widespread use, weve finally got access to crypto software that does the scrambling, as well as other functions like digital signatures that will authenticate that we are who we say we are in cyberspace. You might not see the crypto, but its there, going into action every time your computer tells you its going into the secret secure mode. What should alarm you is that crypto still isnt there in the millions of medical records, credit-card databases. We can attribute that failure that failure to the governments active opposition.
Nowadays, more and more of the activities once associated with that good old physical world will be performed at our keyboards, phone devices and palmtops and over digital televisions. Crypto lies at the center of this transition, and were going to ask a lot of it over the next few years. Will our e-mail and phone systems ever have strong encryption and digital signatures built in? Will feats of crypto really send digital cash to replace the paper money, and enable us to spend it in stores?
The issues in the crypto-battle, the first great war of the digital age, were more straightforward. As people cozied up to digital communications, and e-commerce became a force in the economy, the need for cryptos near-magical power of encryption and authentication became red hot. But those at the helm of the government focused not on the benefits, but the dangers the fear that terrorists or drug dealers would use this digital shield. Ultimately, the question boiled down to this: in an attempt to deny those dangerous few, were we all to be deprived of the tools of privacy?
德普获评2015好莱坞“性价比最低的演员”
习近平强调尊重“网络主权”
圣诞“姥”人惨遭吐槽
姚明被提名NBA名人堂:很震惊,很紧张
中央经济工作会议关键词
你分心上瘾吗?
美国熊爸用无人机给女儿拔牙
万元婚礼贷款免费送 不离婚就不用还
深圳“山体滑坡”
《圣诞老人3:免除条款》
《亚瑟的圣诞》
圣诞节相关词汇
上海试收“雾霾费”
奥巴马庆祝独立日演讲
中华思想术语翻译选读:虚
“奶奶企业家”来了
恐袭阴影下的“9·11一代”
奥巴马白宫晚宴表演单口相声
《圣诞老人》
《圣诞夜惊魂》
2015美剧最佳台词出炉了
2015年哪句电影台词戳中了你的心?
《欧内斯特拯救圣诞节》
环球小姐颁奖闹乌龙 竟把冠军给错人
专家揭秘:如何避免圣诞节送礼不当惹尴尬
一丝不苟的“美食物理学”
SpaceX首次成功回收“一级火箭”
《圣诞坏公公》
奥巴马2013俄亥俄州立大学毕业演讲
低头族都患上了“i弓背”
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |