Benlog

security, privacy, transparency.

Archive for the 'crypto' Category

encryption is (mostly) not magic

Posted: Wednesday, December 21st, 2011 @ 3:17 pm in crypto, mozilla, privacy, security, web | 12 Comments »

A few months ago, Sony’s Playstation Network got hacked. Millions of accounts were breached, leaking physical addresses and passwords. Sony admitted that their data was “not encrypted.” Around the same time, researchers discovered that Dropbox stores user files “unencrypted.” Dozens (hundreds?) closed their accounts in protest. They’re my confidential files, they cried, why couldn’t you [...]

Wombat Voting: Open Audit Elections in Israel

Posted: Wednesday, June 1st, 2011 @ 11:00 pm in crypto, voting | 3 Comments »

My friend Alon Rosen is leading an effort with colleagues Amon Ta-Shma, Ben Riva, and Yoni Ben-Nun in Israel to implement and deploy in-person open-audit voting. The project is called Wombat Voting. It combines a number of existing cryptographic techniques in a very nice package. Oh, and they’ve implemented it and used it to run [...]

grab the pitchforks!… again

Posted: Tuesday, April 19th, 2011 @ 12:49 pm in crypto, data, privacy, web | 10 Comments »

I’m fascinated with how quickly people have reached for the pitchforks recently when the slightest whiff of a privacy/security violation occurs. Last week, a few interesting security tidbits came to light regarding Dropbox, the increasingly popular cloud-based file storage and synchronization service. There’s some interesting discussion of de-duplication techniques which might lead to Oracle attacks, [...]

intelligently designing trust

Posted: Wednesday, March 30th, 2011 @ 12:44 am in crypto, policy, security, web | 3 Comments »

For the past week, every security expert’s been talking about Comodo-Gate. I find it fascinating: Comodo-Gate goes to the core of how we handle trust and how web architecture evolves. And in the end, this crisis provides a rare opportunity. warning signs Last year, Chris Soghoian and Sid Stamm published a paper, Certified Lies [PDF], [...]

everything I know about voting I learned from American Idol

Posted: Wednesday, March 2nd, 2011 @ 12:54 am in crypto, voting | 4 Comments »

Tonight, American Idol began online voting. Yes, I’m a fan of American Idol, but don’t let that fool you: I’m still a bitchin’ cryptographer. I suspect that American Idol online voting will give rise to many questions such as “wow, awesome, now when can I vote in US Elections with my Facebook account?” and “Why [...]

Facebook, the Control Revolution, and the Failure of Applied Modern Cryptography

Posted: Friday, January 14th, 2011 @ 2:40 am in crypto, privacy, web | 9 Comments »

In the late 1990s and early 2000s, it was widely assumed by most tech writers and thinkers, myself included, that the Internet was a “Control Revolution” (to use the words of Andrew Shapiro, author of a book with that very title in 1999). The Internet was going to put people in control, to enable buyers [...]

Crisis in the Java Community… could they have used a secret-ballot election?

Posted: Thursday, December 9th, 2010 @ 3:06 pm in crypto, privacy, security, voting | No Comments »

There is a bit of a crisis in the Java community: the Apache Foundation just resigned its seat on the Java Executive Committee, as did two individual members, Doug Lea and Tim Peierls. From what I understand, the central issue appears to be that Oracle, the new Java “owner” since they acquired Sun Microsystems, is [...]

keep your hands off my session cookies

Posted: Monday, October 25th, 2010 @ 5:05 pm in crypto, security, web | 18 Comments »

For years, security folks — myself included — have warned about the risk of personalized web sites such as Google, Facebook, Twitter, etc. being served over plain HTTP, as opposed to the more secure HTTPS, especially given the proliferation of open wifi networks. But warnings from security freaks rarely get people’s attention. A demonstration is [...]

Facebook can and should do more to proactively protect users

Posted: Friday, October 22nd, 2010 @ 1:14 am in crypto, privacy, web | 2 Comments »

A few days ago, the Wall Street Journal revealed that Facebook apps were leaking user information to ad networks. Today, Facebook proposed a scheme to address this issue. This is good news, but I’m concerned that Facebook’s proposal doesn’t address the underlying issue fully. Facebook could be doing a lot more to protect its users, [...]

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

Posted: Friday, February 26th, 2010 @ 5:29 pm in crypto, privacy, voting | No Comments »

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 generally impressed with the measures they’re taking to protect their users’ data. I particularly enjoyed [...]