David Bismark: E-voting without fraud

69,833 views ・ 2010-11-02

TED


请双击下面的英文字幕来播放视频。

翻译人员: Yanni Wu 校对人员: Jenny Yang
00:16
So there are a few things
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世界上没几件事情
00:18
that bring us humans together in the way that an election does.
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可以象选举那样把人们连接在一起
00:21
We stand in elections; we vote in elections;
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我们身于选举之中,我们在选举中投票
00:24
we observe elections.
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我们观察选举
00:26
Our democracies rely on elections.
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我们的民主倚赖于选举
00:29
We all understand why we have elections,
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我们都明白我们为什么要选举
00:32
and we all leave the house on the same day
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我们在同一天,离开屋子
00:34
to go and vote.
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走出去,投一票
00:36
We cherish the opportunity to have our say,
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我们珍惜这个让我们发言的机会
00:39
to help decide the future of the country.
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去帮助决定这个国家的未来
00:44
The fundamental idea is that politicians
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基本的思想是,政治家们
00:46
are given mandate to speak for us,
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被委任为我们说话
00:49
to make decisions on our behalf
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代表我们作出决定
00:51
that affect us all.
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从而影响我们每一个人
00:53
Without that mandate, they would be corrupt.
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没有那些委任制度,就会产生腐败
00:56
Well unfortunately, power corrupts,
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但不幸的是,权力使人腐化
00:58
and so people will do lots of things
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所以人们会做很多事
01:01
to get power and to stay in power,
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以获得有权力,并稳固权力
01:04
including doing bad things to elections.
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包括在选举中动手脚
01:08
You see, even if the idea
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你看,即使这个
01:10
of the election is perfect,
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选举的理念是完美的
01:12
running a countrywide election is a big project,
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进行一个全国性的选举是一项大工程
01:15
and big projects are messy.
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大工程容易乱
01:18
Whenever there is an election,
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不管什么时候举行选举
01:20
it seems like something always goes wrong,
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它好像总会出点岔子
01:22
someone tries to cheat,
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一些人尝试着去作弊
01:24
or something goes accidentally awry --
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或者一些事意外地出错了--
01:27
a ballot box goes missing here,
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这里一个选票箱找不着了
01:30
chads are left hanging over here.
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争执悬而未决
01:33
To make sure as few things as possible go wrong,
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为了尽可能保证少的出错
01:37
we have all these procedures around the election.
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我们在选举过程中设置了一系列程序
01:40
So for example, you come to the polling station,
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所以比方说,你来到投票站
01:43
and a poll station worker asks for your ID
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投票站工作人员问你要身份证号码
01:46
before giving you a ballot form
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在给你选票单之前
01:48
and asking you to go into a voting booth
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然后工作人员让你进投票亭
01:50
to fill out your vote.
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填写你的投票
01:52
When you come back out, you get to drop your vote
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当你出来的时候,你需要把选票
01:54
into the ballot box
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投进选票箱
01:56
where it mixes with all the other votes,
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在哪里和所有选票混在一起
01:58
so that no one knows how you voted.
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所以没有人知道你如何投票
02:01
Well, what I want us to think about for a moment
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嗯,我想让大家思考片刻的是
02:03
is what happens after that,
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在那之后会发生什么
02:05
after you drop your vote into the ballot box.
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在你把选票投进箱子里以后
02:07
And most people would go home
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大多数人会回家
02:09
and feel sure that their vote has been counted,
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并且确信自己的选票被记下
02:11
because they trust
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因为他们信任
02:13
that the election system works.
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选举的系统运行地万无一失
02:15
They trust that election workers and election observers
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他们信任选举工作人员和督查人员
02:18
do their jobs and do their jobs correctly.
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做好了他们的工作并且正确地履行了职责
02:22
The ballot boxes go to counting places.
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投票箱被送去计票处
02:25
They're unsealed and the votes are poured out
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他们把信封开启然后选票们被倒出
02:28
and laboriously counted.
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然后辛苦地计票
02:31
Most of us have to trust
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我们中的大多数人必须信任
02:33
that that happens correctly for our own vote,
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我们的投票被正确地对待
02:35
and we all have to trust that that happens correctly
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并且我们都须要信任所有人的选票
02:38
for all the votes in the election.
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都被正确的对待了
02:41
So we have to trust a lot of people.
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所以我们得信任很多人
02:45
We have to trust a lot of procedures.
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我们须得信任一大推的程序
02:49
And sometimes we even have to trust computers.
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有时候,我们甚至还得信任电脑
02:54
So imagine hundreds of millions of voters
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所以想象一下吧,成百上亿的选民
02:56
casting hundreds of millions of votes,
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投下的是成百上亿的选票
02:58
all to be counted correctly
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所有的选票都得被计算正确
03:01
and all the things that can possibly go wrong
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所有这些事情都可能出问题
03:04
causing all these bad headlines,
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导致那些丑闻
03:09
and you cannot help but feel exhausted at the idea
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但你却不能做点什么,只有对尽力改善选举
03:12
of trying to make elections better.
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表示精疲力竭了
03:18
Well in the face of all these bad headlines,
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好的,在这些丑闻头条新闻的表面之下
03:20
researchers have taken a step back
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研究者退后一想
03:23
and thought about how we can do elections differently.
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想怎样才能使我们选举的方式变得不同
03:27
They've zoomed out and looked at the big picture.
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他们扩大视野从整体来看
03:30
And the big picture is this:
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整体的情况就是:
03:32
elections should be verifiable.
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选举应该是可证实的
03:36
Voters should be able to check
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选民需要有能力去查看
03:39
that their votes are counted correctly,
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他们的选票被正确的记录了
03:42
without breaking election secrecy,
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却不影响选举的保密功能
03:44
which is so very important.
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这是及其重要的
03:47
And that's the tough part.
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也是最有难度的一部分
03:49
How do we make an election system completely verifiable
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我们怎样才能让一个选举系统完全地可验证呢?
03:52
while keeping the votes
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并且保证选票
03:54
absolutely secret?
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绝对的保密
03:56
Well, the way we've come up with
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好的,我们的方法就是
03:58
uses computers
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用计算机
04:00
but doesn't depend on them.
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但是绝不倚赖于计算机
04:02
And the secret is the ballot form.
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秘密就在于选票表格
04:04
And if you look closely at these ballot forms,
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如果你近看那些选票表格
04:06
you'll notice that the candidate list
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你会发现,候选人名单
04:08
is in a different order on each one.
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在每份表格上呈现出不同的排列
04:10
And that means, if you mark your choices on one of them
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这意味着,如果你在一张表格上标记一个选项
04:13
and then remove the candidate list,
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然后去掉候选人名单排列
04:15
I won't be able to tell from the bit remaining
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我就不能从剩下的部分中得知
04:18
what your vote is for.
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你选的是谁
04:21
And on each ballot form there is this encrypted value
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在每一份选举表格中还有加密值
04:24
in the form of this 2D barcode
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就在表格右边的
04:26
on the right.
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二维码中
04:28
And there's some complicated cryptography
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那里有很复杂的密码系统
04:30
going on in there,
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在其中
04:32
but what's not complicated
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但你使用其中一张去投票
04:34
is voting with one of these forms.
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却并不复杂
04:37
So we can let computers do all the complicated cryptography for us,
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所以我们可以让计算机为我们做所有复杂的加密过程
04:40
and then we'll use the paper for verification.
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然后我们使用这些纸质表进行核对
04:44
So this is how you vote.
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好了,这就是你怎样投票:
04:46
You get one of these ballot forms at random,
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你随机从投票表格中拿出一张
04:50
and then you go into the voting booth,
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然后你进入投票亭
04:52
and you mark your choices,
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你标记你的选项
04:54
and you tear along a perforation.
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沿着打孔边沿撕开
04:59
And you shred the candidate list.
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用粉碎机粉碎候选人列表
05:02
And the bit that remains, the one with your marks --
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剩下的那一块,有你标记的那个
05:05
this is your encrypted vote.
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就是你加密过的选票
05:07
So you let a poll station worker
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所以你让选举站工作人员
05:09
scan your encrypted vote.
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扫描你的加密选票
05:11
And because it's encrypted,
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因为它是加密的
05:13
it can be submitted, stored
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它可以被提交,保存
05:15
and counted centrally
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然后被集中计算
05:18
and displayed on a website
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在网络上公布
05:20
for anyone to see, including you.
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任何人都可以看到,包括你
05:23
So you take this encrypted vote
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所以你可以带着你的加密选票回家
05:26
home as your receipt.
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就像一个回执一样
05:28
And after the close of the election,
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在选举关闭后
05:30
you can check that your vote was counted
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你可以用你的回执
05:32
by comparing your receipt
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对照网上的选票
05:35
to the vote on the website.
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来检查你的选票是否被记录了
05:39
And remember, the vote is encrypted
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记得吗?选票是加密过的
05:41
from the moment you leave the voting booth,
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就在你离开投票亭的那一刻
05:44
so if an election official wants to find out how you voted,
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所以如果,实际上,选举官方人员想看你投给谁
05:47
they will not be able to.
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他们也没有那个能力了
05:49
If the government wants to find out how you voted,
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如果政府想看你投给谁
05:51
they won't be able to.
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他们也没有那个能力了
05:54
No hacker can break in
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没有黑客可以侵入
05:56
and find out how you voted.
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去看你投给谁
05:58
No hacker can break in and change your vote,
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没有黑客可以侵入去篡改你的投票
06:01
because then it won't match your receipt.
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因为那样就和你的回执不符合了
06:04
Votes can't go missing
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选票不会丢失
06:07
because then you won't find yours when you look for it.
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因为你去查的时候会注意到你的选票不见了
06:11
But the election magic doesn't stop there.
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但,选举的魔力不会因此消失
06:14
Instead, we want to make the whole process
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取而代之的是,我们让整个过程
06:16
so transparent
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如此透明化
06:18
that news media and international observers
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新闻媒体和国际观察者们
06:21
and anyone who wants to
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任何人只要他想
06:23
can download all the election data
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就可以下载整个选举数据
06:25
and do the count themselves.
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然后自己计算
06:27
They can check that all the votes were counted correctly.
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他们可以检查每个投票都被正确的记录了
06:30
They can check
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他们可以检查
06:32
that the announced result of the election
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选举的结果
06:34
is the correct one.
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是不是正确的
06:36
And these are elections
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这就是选举
06:38
by the people, for the people.
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依赖人民,服务于人民
06:40
So the next step for our democracies
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所以我们民主的下一步就是
06:43
are transparent
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透明化
06:45
and verifiable elections.
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可验证的选举
06:47
Thank you.
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谢谢
06:49
(Applause)
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(掌声)
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