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User: jlcooke

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  1. Beat the Beatings: Have a fake parition... on Distinguishing Encrypted Data From Random Data? · · Score: 1

    Just as with your laptop. Create a fake login.

    So when someone beats you with a phone book or a tirewrench, you can say "the login is jdoe, password 123!" and they'll login and see your not so important files. When actually your login is janedoe password abc.

    Same applies with encrypted partitions in your setup. Have a partition A at index N and a partition B at index M. A,N is the fake one, complete with files recently modified (.bashrc and cron will help with that). And B,M is your normal secure parition.

  2. vmware + fullscreen + luck? on Recourse For Draconian Encryption Requirements? · · Score: 1

    A bit snarky - but install VMWare, make it full-screen and hope they don't notice?

  3. Password in clear-text on Is Battery-Free 2-Factor ID Secure? · · Score: 1

    The system is no better than having a normal credit card CVV.

    The LCD-like half-images are the secret. Take a photo of that and you're totally compromised.

    The battery systems (like RSA SecurID) are better because they protect the secret inside the deviceand only give a derived value every 60 seconds.

    Nice try however.

  4. Mangle better on Has Google Broken JavaScript Spam Munging? · · Score: 1

    Like this:

    www.certainkey.com/dm.

    Needs some crypto computation to decrypt. User needs to click on a "Get my Email" button. Works on iphone.

  5. Re:Too good to be true... maybe? on Plastic and Fuel That Grow On Trees · · Score: 1

    This news is actually over 50 years old.

    Pop reference you can check out: "It's a Wonder Life" - the flash-back scene where the lead charactor's friend tells me "there's a great investment oppertunity with Soy farmers, they're going to make plastics!" - or something like that.

    Mr Tupper (Tupperware fame) made it big by using fuel refinement waste to make plastics - there by removing the bottleneck of growing Soy.

  6. Something like this perhaps on Why the CAPTCHA Approach Is Doomed · · Score: 1

    The key is to make the bots/spammers use more resources then they have.

    Something like this can be used to slow down email address scanning bots.

    Like sending email with hashcash, if you make the scammers work to get the right answer by requiring to compute a computationally complex formula (crypto function random walk distinguished points), they will not be able to keep up.

    A website can pre-compute a table of (and continuously add to that table) challange-responses that a visitor must perform. A human will see a 5-15 second delay to registration, to a bot this can be intolorable.

  7. Look at older projects on Collaborative Map-Reduce In the Browser · · Score: 1

    http://it.slashdot.org/article.pl?sid=03/12/31/2246241&tid=93

    MD5CRK used a JavaApplet that used this Chinese Lottery concept. The applet performed 95% as fast as a pure C implementation of MD5. JavaScript is another matter however. And an assebly code that inlieved MMX/SSE with ALU was much faster.

    Background threads in browsers will help of course.

  8. Friends + rsync over ssh on Long-Term Personal Data Storage? · · Score: 2, Interesting

    I have gigs of photos (wedding, long lost family picnics, etc) and music that I can't bare to lose.

    Find someone who doesn't want to lose anything either and setup rsync over ssh. Synchronize often, rsync is very friendly to bandwidth.

  9. Re:Why Lorenz's work was important on Edward Lorenz, Father of Chaos Theory, Dies at 90 · · Score: 1

    Pointcare knew of such systems when he worked on the n-body problem. Thing was - he died before Lorenz was ever in school. So Lorenz is given title of "father of chaos" when it's not appropriate to do so, imho.

  10. Re:Seeds? What about the whole plant? on New Wonder Weed to Fuel Cars? · · Score: 1

    It's called a pump, much like the one in your pool and a filter. Multiply by N pools.

    The reason no-one's doing this is simple:
      - fuel makers aren't farmers, and don't want to get into agriculture.

    It's more profitable to buy oil seeds below market prices from desperate farmers and turn it into fuel than grow it yourself.

    Fuel makers are large chemical companies.

    I don't like being flame-bait here - but clearly most of the /. crowd hasn't thought this out.

    ps. Plant oils have the added bonus over ethanol of being usable for plastic production as well.

  11. Seeds? What about the whole plant? on New Wonder Weed to Fuel Cars? · · Score: 5, Interesting

    Allow me to be crack-pot.

    This is old news, like 20 years old. Mainstream old, it's more like 5 years. Still old.

    Real biofuel folk know that Algae is the pot of gold at the end of the rainbow.

    J-plant's seeds are 40% oil. Some breeds of Algae are 50% oil by TOTAL PLANT MASS.

    Not to mention it's the fastest growing plant - faster than bamboo.

    Not to mention it's the easiest thing to grow (water, dirt, shit, sunlight). Just think about how much work people go through to keep it out of a chlorinated pool. What would happen if actually tried to grow it?

    Not to mention you don't need arable land to grow algae - desert works exceptionally well. Beside a nuclear (pr. new-clear) power plant will let you use waste heat to keep the green stuff growing all winter as well.

    Industrial algae production, 100's of hectares of 1m deep concrete pools and greenhouses. Constantly skimming fractions of the population allowing re-growth. We're talking constant production, no expensive equipment to harvest.

    The man doesn't want you to know.

  12. Don't use images, don't test for humans on Evolution of the 'Captcha' · · Score: 1

    The goal of CAPTCHAs in most situations is to make the business of using a bot not cost effective.

    You can do this by slowing the bots down, and not stopping them entirely.

    Humans will wait 30s to enter a site they should be going to, this is death to bot operators (even with large botnets). Like what hashcash does for anti-spam.

    An example, is here to protect email addresses.
    Yes, you could write a cleaver tool to do the math in compiled C and not JavaScript, but the cost is still there.

  13. Nothing new on RIAA Attacks Sites Participating in Its Own Campaign · · Score: 2, Informative

    The Barenaked ladies did this in their last tour to support their "Barenaked for the Holidays" album.

    USB + MP3 + concert.

    Not to take away from Trent, big fan of his and the 'Ladies.

  14. Re:End carbon emissions in 30 years (how to) on On Electricity (Generation) · · Score: 0, Offtopic

    bzzzt wrong.

    Flooding land around a dam releases 1,000,000's of tonnes of CO2 in biomass decay. It takes 20 years for it to stop rotting. The Hoover dam is the only exception, it was in a desert.

    Solution (I say again) is industrial alge farms. Best photocells ever made. And they produce 50% oil by mass. Burns in a Diesel-type engine. Produces power, torque, and can be used from home heating oil. All they need is CO2, sun, (salt-)water, dirt and shit. But people don't listen to good ideas like that/

  15. I have a 2-Tank Car already. on On Electricity (Generation) · · Score: 4, Informative

    But it's not a Ethenol hybrid.

    It's a 2001 VW Jetta TDI. Diesel. Installed a GreaseCar system. Works well, but not in this weather (-20C..-30C).

    Pretty much every other time of the year, I start on DinoDiesel and once things get hot enough I switch to Waste Veggie Oil I get and filter to 10 microns from a local pub.

    The article puts things together in a clear way. Points out what's wrong with the nut-jobs who think the world can be run off of butterflies and rainbows.

    To those back-and-forthing on Ethenol - think about how much energy there is in a litre of ethenol. It's very very small. Production is expensive ($$$ & energy).

    I don't 100% agree with the article's view on charcol fuel sources. But I like the analysis, not many gems like that.

    My thoughts on how to solve this? Okokokok I'll tell you anyways. Grow alge, crush it into oil and use that. Alge grows 100x faster than canola/soy/rapeseed, is 50% oil, and only requires sunlight, (non-)salted water, heat, dirt and shit. No expentive farming equipment guzzling diesel to harvest. Just settling ponds like at the local water treatment plant to skim off the alge.

    Anyways. Alge == good. Alge has had about 3-4 Billion years head start on Solar-power. Don't believe me? Take a deep breath.

  16. Re:Your keyspace wouldn't be that much bigger on Debunking a Bogus Encryption Statement? · · Score: 1

    If you're using a cipher that is weak to known plaintext attacks, you have other issues. The above argument doesn't hold, sorry.

  17. Labels should pay YouTube for this on YouTube to Offer Every Music Video Ever Created? · · Score: 3, Interesting

    Blows my mind why labels don't give the videos out on all the band sites.

    It's a loss leader. I can't remember how many albums I bought because the video introduced me to the music. The audio quality would be poor enough to encourage people to buy the real thing.

  18. Technology is important on Licensing Commercial Source Code? · · Score: 1

    If your code was writting in something like Java, then you could protect your JARs using some encrypted-code-locking system (think - encrypted JARs) and then give your customer some interfaces to build off of with API documentation.

    This will give your code protection, and let your customer expand on what you've done.

    But I imagine you havn't written all this in Java, otherwise you wouldn't be asking the question.

    For code that isn't written in a interpreted or VM'd language, I'd suggest lawyers and contracts and audits and escrows.

    Cheers

  19. Can some phone-geek clear something up please? on Company Makes Inconspicuous Secure Cellphone · · Score: 1

    My understanding of how cell phones work:
      a) Alice calls Bob
          + results in a SS7 data message sent accross the PSN (publicly switched network - aka. legacy phone excahnges) to establish a ring on Bob's set.
          + If they're both cell phone users, then there is additional routing accross each users' cellphone networks.
      b) Bob answers the call and talks with Alice
          + Cell phones often use u-law for voice/data compression. The PSN transmits at a lossless (unless it's VOIP) 8 sample at 1khz See here

    With u-law compression (and other regions of the earth use different compression schemes to account for different intonations of the languages used) how can you reliably send lossless data using these phones?

  20. Star wars? on Warcraft III on a Table-Top · · Score: -1, Flamebait

    Don't play WoW with a wookie - he'll rip your arms off if he loses.

  21. 2.5 TB on Home Network Data Storage Device · · Score: 1

    Lots of posts. Here's my 2 cents.

    Find a cheep machine, used. The MoBo, PwrSup, CPU, Case is cheapest that way. Load it with about a GIG of RAM. That'll set you back about $30 and save wear & tear on your disks.

    Get 3 4-port SATA cards (non-RAID). There is a reason why MoBo's come with only two IDE ports (for 4 devices). IDE (PATA) cable suck. SATA is so nice. If you make more than $10/hr it's worth your time to get SATA. And the SATA drives are just as cheap as PATA/IDE now.

    Get 12 large HDs. Get the best GB/$$ ratio. Don't try to predict the future. Prices will drop, availability will always be there. Just get the best price. Oh yeah, and get them from a small shop, you can get a good deal that way. I got 250GB WD's for my file server.

    Get the latest Redhat. The install time is the shortest, thus cheapest. And your fileserver will not need the best compiled binaries from GenToo. Your network will be your bottleneck, even if you're using block device encryption. CPUs are fast, and so is SATA. :)

    Setup raid using mdadm. It's simple and easy. Thus, cheapest. Oh yeah, use the largest chunk size you can. 1024k is what I used. There are reasons for this which I will not go in to. Point is: music/movies are large. Let your machine eat up your RAID data in the largest pieces possible.

    Format it using ext3. It's supported by all rescue disks. This will save you time when things go bad (don't they always?) Also, ext3 has stepping optimization for RAID. Use the largest block size you can and google for "ext3 stepping".

    Load SMB, ftp daemon, and rsync (in daemon mode). Then get a modded xbox to play all this in pure candy.

    Get friends who love:
      - music
      - movies
      - taking photos of their lives

    Make a pact to give them all your music and movies (which are not copyrighted of course) and make them agree to rsync your personal photos in exchange. The Key: Automated Offside Backup of Vital Data Using Rsync and Your Friends (or "AOBVDURYF" for those who have no life).

    Then you're off to the races.

  22. Re:They're morons who deserve to get caught on Police Need 90 Days To Crack Hard Drives · · Score: 1

    1024 AES huh? How? AES keys sizes are 128, 192 and 256. You cna get intermedia sizes, but nothing over 256.

    Unless you're silly and uses 4AES (4 x AES, 4 x 256 = 1024).

    But then, you need entropy of the keys to be high enough or you're wasting time/effort.

  23. 256? 3des? no. on Police Need 90 Days To Crack Hard Drives · · Score: 5, Informative

    3des. 3 x des. des uses 64 bit key. Well, 56 bit if you remove the useless parity.

    3 x 56 = 168. or 3 x 64 = 192. Either way, 256 is is not.

    256 bit AES, then maybe.

  24. 500 km on a 50 L tank? Bah! on Hydrogen Stored in Safe High Density Pellets · · Score: 5, Interesting

    I got 1,100 km on my 55L tank just this weekend. What's the trick?

    Diesel. Jetta. And my fuel was 30% cheaper than regular unleaded. And I filled up with 20% Bio-Diesel blend before my trip.

  25. Re:watch out! on CertainKey To Pay $10,000 For MD5 Collision · · Score: 1

    CertainKey Inc. is in Canada. And the funds are being wired to China.