Comment Took me 21:45 to beat the Google game (Score 5, Funny) 211
That was pretty fun! I wasted 10 regenerations trying to get past the Crying Angel in the graveyard.
Comment Re:Those poor people (Score 1) 520
I can't see how working on the very-bottom rung of America's admittedly bad domestic security apparatus disqualifies one for personhood. I'm doubt this TSA officer has killed any innocent people, likely a prerequisite for inclusion on my wine list if I had one.
Comment Re:Those poor people (Score 3, Interesting) 520
Really? +4? That's despicable, security guards are fucking people too. Or is this some kind of sick justice for you and those who up-moderated you? How can you justify this an consider yourself 'people'? If a gunman mowed down a courtroom during a tech-giant patent trial, would you eschew any sympathy for the lawyers who died too? Not liking the TSA is one thing, but implying a random person deserved to be fatally shot by a crazed gunman at an airport is sociopathic.
Comment Re:Parallel processing (Score 1) 98
Can anyone say "razor blades"?
Comment This law is crazy! You can't regulate that! Gosh! (Score 3, Informative) 266
Gee Whiz! This post is really just made to cancel out my unintentional bad moderation of a good post. This JavaScript interface sucks without a confirm feature.
Comment The original paper (Score 4, Informative) 245
The original paper is available here.
Cryptology ePrint Archive: Report 2013/451
Candidate Indistinguishability Obfuscation and Functional Encryption for all circuits
Sanjam Garg and Craig Gentry and Shai Halevi and Mariana Raykova and Amit Sahai and Brent Waters
Abstract: In this work, we study indistinguishability obfuscation and functional encryption for general circuits:
Indistinguishability obfuscation requires that given any two equivalent circuits C_0 and C_1 of similar size, the obfuscations of C_0 and C_1 should be computationally indistinguishable.
In functional encryption, ciphertexts encrypt inputs x and keys are issued for circuits C. Using the key SK_C to decrypt a ciphertext CT_x = Enc(x), yields the value C(x) but does not reveal anything else about x. Furthermore, no collusion of secret key holders should be able to learn anything more than the union of what they can each learn individually.
We give constructions for indistinguishability obfuscation and functional encryption that supports all polynomial-size circuits. We accomplish this goal in three steps:
- We describe a candidate construction for indistinguishability obfuscation for NC1 circuits. The security of this construction is based on a new algebraic hardness assumption. The candidate and assumption use a simplified variant of multilinear maps, which we call Multilinear Jigsaw Puzzles.
- We show how to use indistinguishability obfuscation for NC1 together with Fully Homomorphic Encryption (with decryption in NC1) to achieve indistinguishability obfuscation for all circuits.
- Finally, we show how to use indistinguishability obfuscation for circuits, public-key encryption, and non-interactive zero knowledge to achieve functional encryption for all circuits. The functional encryption scheme we construct also enjoys succinct ciphertexts, which enables several other applications.
Category / Keywords: public-key cryptography / Obfuscation, Functional Encryption, Multilinear Maps
Date: received 20 Jul 2013, last revised 21 Jul 2013
Contact author: amitsahai at gmail com
Available format(s): PDF | BibTeX Citation
Submission + - Cybercriminals has heroin delivered to Brian Krebs, then calls police (krebsonsecurity.com)
Okian Warrior writes: "Fans” of [security researcher Brian Krebs] have shown their affection in some curious ways. One called in a phony hostage situation that resulted in a dozen heavily armed police surrounding my home. Another opened a $20,000 new line of credit in my name. Others sent more than $1,000 in bogus PayPal donations from hacked accounts. Still more admirers paid my cable bill for the next three years using stolen credit cards. Malware authors have even used my name and likeness to peddle their wares.
But the most recent attempt to embarrass and fluster this author easily takes the cake as the most elaborate: Earlier this month, the administrator of an exclusive cybercrime forum hatched and executed a plan to purchase heroin, have it mailed to my home, and then spoof a phone call from one of my neighbors alerting the local police. Thankfully, I had already established a presence on his forum and was able to monitor the scam in real time and alert my local police well in advance of the delivery.
But the most recent attempt to embarrass and fluster this author easily takes the cake as the most elaborate: Earlier this month, the administrator of an exclusive cybercrime forum hatched and executed a plan to purchase heroin, have it mailed to my home, and then spoof a phone call from one of my neighbors alerting the local police. Thankfully, I had already established a presence on his forum and was able to monitor the scam in real time and alert my local police well in advance of the delivery.
Submission + - Researchers Want to Make Origami-Inspired Organs (vice.com)
Daniel_Stuckey writes: Backed by a $2 million National Science Foundation grant, Carol Livermore, an associate professor of mechanical and industrial engineering at Northeastern University, is trying to figure out how to apply novel folding patterns inspired by origami to fold 2D tissues into functioning 3D organs.
Previous attempts at full-scale organ engineering have yielded homogenous clumps of cells that somewhat resemble organs, but lack the complex and nuanced biochemical functioning afforded by their naturally occurring counterparts. Livermore and her team believe that their origami approach might change that.
Previous attempts at full-scale organ engineering have yielded homogenous clumps of cells that somewhat resemble organs, but lack the complex and nuanced biochemical functioning afforded by their naturally occurring counterparts. Livermore and her team believe that their origami approach might change that.
Submission + - Study finds 3D printers pay for themselves in under a year (computerworld.com)
Lucas123 writes: Researchers using a RepRap open source 3D printer found that the average household could save as much as $2,000 annually and recoup the cost of the printer in under a year by printing out common household items. The Michigan Technical University (MTU) research group printed just 20 items and used "conservative" numbers to find that the average homeowner could print common products, such as shower rings or smartphone cases, for far less money than purchasing them online at discount Websites, such as Google Shopper. "It cost us about $18 to print all [20] items... the lowest retail cost we could find for the same items online was $312 and the highest was $1,943," said Joshua Pearce, an associate professor in the Materials Science and Engineering Department at MTU. "The unavoidable conclusion from this study is that the RepRap [3D printers] is an economically attractive investment for the average U.S. household already."
Comment Re:So . . . (Score 1) 129
"Klyde."
It would be a catchy name if he didn't mess around with the letter casing.
Comment Bugs in the demo (Score 3, Interesting) 99
In the race card demo the "best lap" time is actually just your last lap. And when you finish all 10 laps the clock doesn't stop, so your "final time" keeps increasing. I wonder if this is a bug in Shumway or the game itself. And I only get around 7 FPS on average, on Firefox in Linux/x86.
Comment Re:All This Needs Is A FOSS Solution (Score 3, Informative) 127
Ostel is a running public beta of the Open Secure Telephony project. It's end-to-end secure VoIP. Anyone with an Android phone (i.e. everybody reading this) is covered for everything but video by The Guardian Project.
Comment Re:how to correct it immediately (Score 1) 306
1) Right-click desktop, select "Desktop Settings"
2) Open drop-down box, change default desktop to "Folder View"
And now your desktop folder is your whole desktop again, like Windows 95 or KDE 3. Tada! Or do you think "Desktop Settings" is the wrong place for this option?
2) Open drop-down box, change default desktop to "Folder View"
And now your desktop folder is your whole desktop again, like Windows 95 or KDE 3. Tada! Or do you think "Desktop Settings" is the wrong place for this option?
Comment Tap and die (Score 1) 290
I suppose there are no tap and die kits onboard to cut new threads into either the bolt or the module. Should be added to the tool inventory.
Submission + - My Child Will One Day Be Your Child's Leader (cbsnews.com) 1
Vulcan195 writes: "Would you let your 3-yr play with a real saw? You would if you were a parent in Switzerland. Suzanne Lucas (a US mom residing in Switzerland) writes about the contrasts between the US and Swiss ways of instilling wisdom. She writes: "Every Friday, whether rain, shine, snow, or heat, my 3-yr old goes into the forest for four hours with 10 other school children. In addition to playing with saws and files, they roast their own hot dogs over an open fire. If a child drops a hot dog, the teacher picks it up, brushes the dirt off, and hands it back." She suggests that such kids grow up and lead the ones who were coddled (e.g. US kids) during their early years."
