Category Archives: crypto

For deniability, faking data even the owner can’t prove is fake

I was speaking with a colleague yesterday about Loopt, the location-based social network, the rise of location-based services and the incredible privacy challenges they present. I heard the Loopt folks give a talk a few months ago, and I was … Continue reading

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Sometimes it’s not counter-intuitive

Bruce Schneier writes that it’s reasonable for unmanned drones to broadcast unencrypted video streams, because the video stream is not that useful to enemies, and given that many people need access to the video feed, the key distribution problem would … Continue reading

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Takoma Park 2009: the conclusion

Well, it’s been a few weeks of craziness at home and catching up on other work, but I’ve finally wrapped up the Takoma Park 2009 audit. The final step: letting you, dear reader, run the audit all on your own. … Continue reading

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Takoma Park: verifying the shuffle and the unopened ballots

So the votes have been cast, the uncertified tally has been released, and the confirmation codes have been published for all voters to check. Now, it’s time to make sure that the coded votes, which were shuffled via the Shuffle … Continue reading

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Takoma Park: auditing the auditor

Rick Carback from the Scantegrity team just pointed out to me that my totals are not quite the same as theirs, and he surmises that I may have read the Instant Runoff rules incorrectly. Specifically, my code considers that ballots … Continue reading

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Takoma Park: and those provisional ballots?

Coverage of the Takoma Park election continues, with a good article in Wired. And so does the audit! Some people who showed up on election day couldn’t be verified as registered voters. Thanks to one of the useful HAVA provisions, … Continue reading

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Takoma Park: so can I see my confirmation code already?

[This post is part of my Auditing the Takoma Park Municipal Election series.] So the votes have been cast, and voters went home. Some of them wrote down their confirmation codes. They probably checked those codes against the official Scantegrity … Continue reading

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Takoma Park: Meeting 2

[This post is part of my Auditing the Takoma Park Municipal Election series.] OK, so a couple of days ago we verified the initial P table and D tables for all 6 wards in tomorrow‘s Takoma Park election. Now comes … Continue reading

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Takoma Park Election: the 7 steps of auditing

[This post is part of my Auditing the Takoma Park Municipal Election series.] If you’ve been following, we know what the voter experience is going to be like on Tuesday, and we know what the auditing process is going to … Continue reading

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Takoma Park 2009: Verifying the Tally from the Confirmation Codes

[This post is part of my Auditing the Takoma Park Municipal Election series.] We’ll now consider the auditing portion of the Takoma Park election. This is a little bit involved, so we’ll take our time. Importantly, the typical voter does … Continue reading

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