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Theory and Practice of Cryptography

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Google Tech Talks December, 19 2007 Topics include: Introduction to Modern Cryptography, Using Cryptography in Practice and at Google, Proofs of Security and Security Definitions and A Special Topic in Cryptography This talk is one in a series hosted by Google University: Wednesdays, 11/28/07 - 12/19/07 from 1-2pm Speaker: Steve Weis Steve Weis received his PhD from the Cryptography and Information Security group at MIT, where he was advised by Ron Rivest. He is a member of Google's Applied Security (AppSec) team and is the technical lead for Google's internal cryptographic library, KeyMaster.

Channel: People & Blogs
Uploaded: November 30, 1999 at 12:00 am
Author: GoogleTechTalks

Length: 32:06
Rating: 4.887324
Views: 28089

Tags: google  techtalks  techtalk  engedu  talk  talks  googletechtalks  education  

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michalchik (November 30, 1999 at 12:00 am)
It looks cool, but I think it misses one essential feature of a voting system. People won't trust it because it is too complex and people won't aprrecaite when it breaks down. Do you think people will take to the streets demanding justice, if they here the mix master shadow check-sums are off? Will reporters even know to report that? It needs to be transparent simple and secure.
blenderpanzi (November 30, 1999 at 12:00 am)
It's much harder to manipulate a paper based election. You have to compromise a lot people at a lot of voting sites (is that the correct engl. term?). If you find a way to manipulate the software (in a way that it changes to the not compromised version after the election ended) you can manipulate a whole election with a single point of failure. So instead of O(n*m) (n=voting sites, m=people there) the costs of your manipulation is O(1).
blenderpanzi (November 30, 1999 at 12:00 am)
Even if the system is open source, even if the cryptography is sound, how can a non-computer expert verify it works correctly on election day? How can a computer expert know that the right unmodified code is running on the voting computer at election day?
blenderpanzi (November 30, 1999 at 12:00 am)
... If before the election the box is empty you can just sit there in the room with the box and watch. Every person puts one vote in it and afterwards you can check if the votes taken out are counted correctly. You can't do that with a machine. You cannot look inside a computer and see how the bits are copied from one register to another. There is no way electronic voting is democratic. For the shake of democracy, count manually, no matter how long it takes! Democracy is worth it.
blenderpanzi (November 30, 1999 at 12:00 am)
I'm just at 0:19:12 so I don't know what else he will talk about but so far he says you can make secure and democratic elections using electronic systems. Well this is bulls**t. There are certain properties of democratic elections not even mechanical voting systems can satisfy. EVERYONE has to be able to understand the election process, not just experts like us computer scientists. If it is just a box where you put paper votes into everyone can comprehend how it works. ...
DerOliverJose (November 30, 1999 at 12:00 am)
les suguiero poner subtitulos en español gracias.
KG84C (November 30, 1999 at 12:00 am)
Don't vote, it just encourages them ! From your friendly neighborhood dedicated loop encryption device
5pl005hProductions (November 30, 1999 at 12:00 am)
lul nubs don't understand what u mean (jr is my old account ;)
shaikhsayfunnabiy (November 30, 1999 at 12:00 am)
Ancient example of cryptography can be found in the Qur'an. Letters numbers addition break down into addends reconvert into letters with different meaning
Wwallace67 (November 30, 1999 at 12:00 am)
If only Ron Paul had actually won the nomination.... Good video otherwise.

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