Archive for the 'Uncategorized' Category

19th Jan 2010

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Cheap tramadol no prescription, I'm at the SPIE Electronic Imaging conference in San Jose, about to begin the second day of the Media Forensics and Security track. There have been some pretty cool papers, including one by Erik Kee and Hany Farid revealing a unique way to use the little image thumbnails in EXIF headers to trace an image to the camera that took it. It turns out that different camera models use slightly different parameters to scale/crop/adjust/compress the image, and by estimating those parameters you can often determine the brand of camera that took the image (you can also get this elsewhere in the EXIF header, Hcl Tramadol Vet, but if someone tampers with that data the thumbnail provides a check.)

Anyway, I took a train from Oakland to San Jose, using my credit card, checked into my hotel with my credit card, and bought a cheapo umbrella, also with my credit card, Tramadol Tablets. On that third transaction the card was declined. Assuming that these purchases in California triggered some fraud alert, I called the card company to find that they couldn't help me because all their computers were down. Ha ha, dammit, cheap tramadol no prescription.

The next day I reached them just before I registered for the conference, Ultracet, which I also wanted to put on the card. It turns out that my card was not blocked, it was cancelled. And not because of transactions from CA, but because of a massive leak of credit card information from "a major retailer." They wouldn't say who, but it was probably the parent company that owns TJ Maxx, Ultram Interactions.

Of course, I am on the other side of the country and cannot wait for a replacement card to arrive in the mail. The operator explained that I could still use the card if I (a) called the 1-800 number just before I was about to hand the card to a cashier; (b) waited on hold; (c) provide my card number and privacy questions over the phone; (d) gave them the amount I was about to spend; and (e) let him hold the card open while the transaction goes through.

I was pretty ticked at first, Canadian tramadol bars, especially as I am not in a good situation to have my card cancelled (with no notification, of course.) But then, from a security standpoint I would be happy if this sort of blanket inconvenience occurred every time a leak happened. We need people to feel the consequences of their data being abused, so that retailers feel at least some pressure not to leave all your transaction data from 4 years ago on a computer connected to the Internet.

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28th Aug 2009

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Order tramadol online legally, I routinely have to produce vector graphics as EPS files, for figures in conference papers. Usually I compose these things as a slide in Apple's Keynote, and choose "save as Postscript" from the Print menu. This gets me a big white field, with the figure lurking within. It must be rotated and cropped.

One of the great embarrassments of the computer industry is that you can't simply rotate and crop a picture in one of the world's most common image formats. Other embarrassments include the increasing difficulty of plugging a computer into a projector, and the industry decision to put rental movies on exposed, scratchable plastic platters, order tramadol online legally. The EPS problem is less of a scandal, but it is still pretty bad, Ultram Er 200mg. You want to look at an image, rotate, crop and save it; pretty much every OS could do that out of the box since the 1980s---to a raster image. To do the same with a vector graphic you need to dig up and download a raft of decades-old utilities, and pore through a few support forums along the way.

I eventually figure out a byzantine way to fix these pictures, but it is completely different for each computer system I've ever used. Order tramadol online legally, If you found this page by Google search, I can give you a working solution for OSX; if this is not your system, I can only wish you luck. Purchase tramadol no rx, First, the ugly setup. I have Ghostscript and LaTeX installed on my computer, which give me the commands I need to manipulate Postscript files. You can get LaTeX here, and for Ghostscript you go to this page. Download and open the most recent distribution, navigate to its folder in the Terminal, and type the commands ./configure, online tramadol without prescription, make, and sudo make install. Making ghostscript requires that you have the compiler installed; if you get a command not found when typing gcc at the Terminal prompt, then you need to dig out your install disk and install the optional Xcode tools, order tramadol online legally.

To crop, I start out with a printer output start.ps on OSX, and distill the thing from a PS file into an EPS file using the Terminal command eps2eps start.ps nextStep.eps. This also tidies up the file; if you don't do this first, the other commands will eventually get confused. Avesto Online Tramadol, Step 1.5: open the EPS file with a text editor, and delete the third line that starts "HiResBoundingBox." This is redundant information, and if you leave it in, you will eventually have two different bounding boxes.

Next, I use ./psfixbb -c -e nextStep.eps > stepThree.eps to fix the bounding box. You can find this script online Order tramadol online legally, , and it invokes Ghostscript to work. Psfixbb renders the picture as a raster image, scans that image to find the nonwhite pixels, and estimates the true bounding box of your graphic, Ingredients In Tramadol.

[It supposedly has an option to rotate the picture too, but it doesn't work. It will rotate the bounding box and leave the graphic alone.]

Finally, if you must rotate the image use epsffit -r NUM NUM NUM NUM stepThree.eps stepFour.eps. Replace those four NUMs with the four numbers spit out by the previous program. This program manages to rotate EPS files properly under OSX.

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21st May 2009

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Kevin Craver is apparenly the Shaw Newspapers Journalist of the Year No rx tramadol online, . Tell me if you see any resemblance.

He won this prestigious honor with Danielle Guerra for covering an improbable cluster of rare brain cancers that occurred near a chemical plant that at various times dumped stuff in the aquifer and in the air. Canadian tramadol online legally, The underlying story is very complex, and they didn't dumb it down: the cancer cannot be traced to any simple cause, and isn't simply environmental malfeasance by some chemical plant, but also a failure of local government, purchase tramadol, and an inability of local officials to wrap their heads around the science involved---and yet, here are two people who were able to wrap their heads around the science and also communicate it to ordinary people. Hci Tablet Tramadol Ultram, Part of the award is surely due to presentation, because rather than simply reporting on events in plain text they used new media formats to give the victims a presence they otherwise would not have had in spare print.

Kevin is a generally skeptical person, and resourceful, distinct from other jouranlists because he is equipped with the scientific, logical and quantitative machinery needed to question and evaluate factual claims, no rx tramadol online. For example, when the plant in question used air stripping to transfer harmful waste into the air, free tramadol without prescription, its managers argued that this wouldn't hurt the town because the town was south and the wind blew west to east. Kevin turned to nearby O'Hare airport to access their mountains of data on wind speed and direction, Sample tramadol overnight delivery, allowing him to prove that this was an absurd simplification.

But seriously, he has to lose the sweater. Not that it's a bad sweater, but the last 10 pictures I took of the dude are in that sweater. He's starting to come across as a cartoon character.

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11th May 2009

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Mine mine mine Discount tramadol online, As of this morning we are officially homeowners. After a small confusion over who actually had the keys, we took possession of this lovely Binghamton west-side home on Binghamton's lovely west side. Everything is awesome about this, all the way down to the Monty Pythonic house number.


Our house faces the park, so we basically have a 22-acre front lawn complete with tennis courts, Snorting Tramadol, a pool, and a haunted carousel where the vampire clowns sleep during the day. Location location location.

When you first see Binghamton, you might have a hard time believing that it is America's "ninth greenest city" rather than America's "ninth most overcast postindustrial abandoned cityscape." But take it from a Midwesterner, this place is really, really, really ridicuously green, discount tramadol online. The fact that you can live on a quiet, shady tree-lined street within walking distance of shops, within five miles of your job, with farms right up the hill is pretty impressive. Especially since Binghamton makes this idyllic lifestyle accessible to regular people of modest means, Non-narcotic Pain Medications, rather than the exclusive domain of rich aging hippie software engineers who decend on authentic small towns and turn them into Ithaca.



The architecture of this area is fascinating. It is about as stereotypical Americana as you can get, and yet in much of the USA you can't find houses like this. Discount tramadol online, My house basically looks like the houses I only saw in books. Go anywhere in the USA developed after 1970 and you are not likely to find tidy wood homes with pretty front porches. Elsewhere houses are engineered to maximize the amount of generic interior space, Tramadol Interaction, so covered front porches are rare. Even if you had the money to add a proper front porch to your beige surburban cube, zoning law probably prohibits it since you're already built as close to the street as possible. Indeed in much of the country the most prominent feature of a house is the garage, because that is the owner's primary point of entry. Binghamton stands in proud defiance of this exurban mindset, discount tramadol online.


In particular, those porches really give the place a degree of community you can't get elsewhere. Every house in the neighborhood has this semi-public space that makes your house part of a larger world, Speedy Drugs Rx. When "spring" happens (we define spring as two consecutive days above 40F) you can walk down the street and see students having cookouts, locals in their rocking chairs, all chilling the fuck out in solidarity.


Now we have to make a huge list of projects. One mild downside of life in Binghamton is that your house was built in 1910 and the last four owners maintained it by hiding the rotting porch under a layer of astroturf. But our house is in relatively good condition, Tramadol Dosage, and I have the whole summer to screw around with it.


At some point, party at my place.

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13th Jun 2008

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Ordering tramadol online legally, A neat steganographic trick: find a form of artificial data partially driven by pseudo-random bits, rip out the PRNG, and replace it with a ciphertext beacon. If the PRNG state can be estimated by someone who receives the data, you have a covert channel. Example:

Data hiding in an iChat backdrop

These are two of my PhD students. We created some novelty iChat backdrops, like this "rainclouds in the office" deal. The rain and lightning are driven by a PRNG, which we replaced with a contaminated patch that grabs ciphertext from another application. On the other side we can extract the PRNG bits by the position of the raindrops, ordering tramadol online legally. With various animations we can transmit ciphertext on the order of 500bps.

What's so great about this. Well, Overnight Tramadol, first of all, it's almost perfect. The cat-and-mouse game of steganography usually involves tampering with natural data like images; inevitably, this tampering tweaks some obscure statistics that give away the embedding. Ordering tramadol online legally, You refine your tampering, Wendy refines her classifier. There is no obvious end to this game, because nobody has perfect statistical knowledge of images, video or audio clips.

In our case, we decided to tamper with a data source that is engineered to be indistinguishable from iid coin flips. If the original PRNG was strong, there's really no way you can tell (that's the "almost" part---Apple's built-in PRNG is pretty weak, so you can't just doctor an existing animation.)

Second of all, What Does Tramadol Treat, it's supraliminal. A "subliminal" channel is a mainstream crypto term for steganography, coined by Gus Simmons (see a great story on this in the May 1998 IEEE Journal of Selected Areas in Communications.) This has nothing to do with so-called subliminal messages; it just means hiding data in a throwaway part of a message that nobody notices. In contrast, a "supraliminal" channel hides data in very blatant, obvious, visible parts of a message, ordering tramadol online legally. Peter Wayner's mimic functions, which transform messages into text dialogs, are supraliminal. So are these animations: if you try to wipe out the channel, you tamper with content.

Which is the point of a supraliminal channel. We introduced the term in a 1998 paper at the 2nd Information Hiding Workshop in Portland (jeez, Generic tramadol from canada, so much happened that year,) and the purpose was to establish a brief uncensorable channel which can be used as a primitive in a key-exchange protocol. Ordering tramadol online legally, You see, steganography is for people who aren't allowed to do key exchange. You have an environment where sending crypto is banned, sending key data is banned, sending random strings is banned. And if you try to embed your public key in an image, you have to do it without a secret key---meaning that the warden can erase the channel. A supraliminal channel allows you to send that initial public data without the erasure.

The one caveat is that anything you send over this public channel cannot have any structure or meaning that distinguishes it from channel noise. You can't send plain text, you can't send an RSA key (what a coincidence, those bits form a number that I can't factor) but you can do Diffie-Hellman with a known p, if your values (mod p) are slightly fixed to look uniform over n-bit strings, ordering tramadol online legally.

Thirdly, this was fun. I've done a lot of fun projects before, Is Tramadol A Narcotic, breaking DRM schemes, taking part in contests, running our own security contests, creating end-to-end prototypes, but this one was the coolest. It involved coding, reverse-engineering, data collection and analysis, protocol design, and actual graphic design. Companies That Make Tramadol, Half the challenge was coming up with fun ideas for novelty backdrops.

We presented this at Information Hiding 08 in Santa Barbara, and for fun I used a contaiminated background animation in the Keynote slide theme. You can put these things anywhere.

Occlusion slideBitrate slide

BTW, I got a lot of useful information on Quartz Composer programming from Kineme.net, and without their help we wouldn't have been able to make our animations draggable into iChat. We owe those dudes a debt of gratitude.

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17th Apr 2007

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No rx tramadol no rx, Apparently there will be a "Professional Bull Riding" event this weekend at the arena across the river.

This is a mere half mile from my house, which is only about a two hour walk if you have to shovel. Which brings me to the other interesting thing that just happened: the remaining 25% of winter. Discount Tramadol Ultram, Whee, snow. Enough snow to close the University, by knocking out the power campus-wide. It was also enough winter to give me a cold, no rx tramadol no rx.

In other news, Tramadol C.o.d., the Underhanded C Contest has just begun. I decided to host it on my main site as a Wordpress blog. I have to say that Wordpress makes my life much easier. Tramadol Caps 50mg, It's not just for blogs: WP is really the quickest way for me to put up a web site about anything, with most of the features I usually need. This is especially true now that WordPress has pages and a page menu, and attributes that I can use to mark articles as hidden. I amended the WordPress theme code so that users can be served a completely different site, Medication Tramadol, with hidden content etc, once they log in.

We'll shall see, Ultram Euphoria, however, how well it does against a Slashdotting.

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14th Feb 2007

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Cheap tramadol without prescription, So far I've shoveled for four hours, cumulative: a half hour late last night, 2 hours this morning, 45 minutes at lunch, and 45 minutes in the afternoon. This is the first time I had to shovel the driveway so we could get out, and again in the afternoon so we could get back in.

It's a lot of time and trouble to shovel because firstly, Is Ultram A Barbituate, my entire back lot is paved. This house is divided into two apartments, and the whole backyard is off-street parking in anticipation of the big Binghamton population boom of 2159. So imagine shoveling out your entire backyard (if you live in Silicon Valley, imagine a lot about twice the size of your backyard.) Secondly, Blogspot.com Buy Tramadol, the driveway squeezes between two houses, so there's no place to move the snow. I spent most of the time carrying the snow out of the alleyway one shovelful at a time, cheap tramadol without prescription.

I'm guessing maybe two more hours will be needed before tomorrow morning, 85 Buy Tramadol, when classes resume. Maybe then I'll finally see the dude on the ATV. There's this dude, see, and he has an ATV with a mini-plow, Getting High On Tramadol, and he'll clear your driveway in minutes for something like 10 bucks. Except he shows up only when you are done shoveling. I have no idea where he lives; he just materializes on the streets of town after the snow is down, Online Propecia Tramadol, like the spark in Qix. Maybe after a few levels he'll get here faster.

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11th Feb 2007

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Ordering tramadol, I cleaned my apartment today, which means dealing with a mountain of junk mail---half of which presents a glaring opportunity for identity thieves.

If I didn't know any better, I'd swear credit card companies were engineering their junk mail to break paper shredders: extra fat envelopes with a demo credit card in them, either plastic or cardboard, Is Ultram Addictive, held with rubber cement. Just to let you know what a credit card might in theory look like if you had one. Coincidentally, this can't be shredded without opening the envelope.

I got a shredder as a present, purchase tramadol from canada, and I am always testing its limits by shredding credit card offers, even as I offer them partially digested by tearing them open. Today it gave up the ghost on a Citibank offer, ordering tramadol. KHAAAAAAAAAN!!!!. Tramadol Used For, This sucker used to go all pro ice on a single envelope; it was ten ninjas and I was master Splinter, offering sage advice while it flipped out and killed people, its brandished steel smoking with bloody execution. Now it chokes to death on one extra-thick credit card offer on extra-heavy paper.

I guess it's time to buy a stronger one, Ultram Wean, after which junk mail will include metal shims for some barely justifiable reason. I want one of those NSA shredders that just coughs up dust when you drop a calculus textbook into it. Or maybe a house with a fireplace. Cheap Tramadol 100mg., Either way, we will see spammers advance the state of the art in indestructable materials as a result of this arms race.

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03rd Feb 2007

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Where to buy cheap tramadol, I just received a mass of spam comments that passed the Akismet filter. Most of them gave URLs for various seedy web sites, but then one of them was a comment that just read:

So much spam (

This was also spam, What Is Ultracet Made Of, as multiple comments came from the same URL. Is Tramadol Addictive, It was a few minutes too early, arriving on my site just before the avalanche of spam from elsewhere. Otherwise it could have passed as meaningful commentary, generic tramadol online.

There is a class of spam comments that fake real comments ("cool site!") with a URL to a link farm or some such. Generic tramadol generic, Right now they are relatively unsophisticated, but I think they could easily cross the gray line into meaningful content. For example, canadian tramadol without prescription, you can take a blog post's text and feed it through ELIZA; post a comment to the effect of "How do you know you just received a mass of spam comments?"

And then one day, bam: you have SkyNet.

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17th Dec 2006

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Order tramadol online, I rarely watch movies, but this weekend I rented two: The Bourne Identity (great) and 15 Minutes (godawful, tho DeNiro is always worth watching.) Both of them had scratches and froze halfway through. 15 minutes locked up the DVD player at 45 minutes. This happens fairly often with rental DVDs, and now it happened with both rentals. Tramadol 311, So I ask the obvious dumb question: is DVD quality actually worse than VHS quality.

Sure you have a far clearer picture, when it works; but you also have movies that catastrophically halt right in the middle. Even if not, the non-catastrophic failures in a DVD are very visible and distracting: VHS errors look like broadband static; DVD errors look like block artifacts, stuttering, freezing and dropped frames, order tramadol online. VHS tapes gracefully degrade: DVDs go into the cinematic equivalent of cardiac arrest.

This is a huge difference when you consider the suspension of disbelief required to watch any movie, Does Ultram Make You Feel High. VHS noise is usually the type of distortion you can unconsciously correct unless it is very severe. DVD errors abruptly snap you out of it, even small ones, No Prescription Tramadol, and ruin the whole experience. Order tramadol online, Real-world quality is a matter of both the severity of the errors and how often they happen. It takes a lot of abuse to make VHS noise substantially distracting. Over the entire lifetime of VHS I remember two movies that were unplayable due to crappy quality. One was an in-flight movie. And I saw a lot more movies back then, Drug Tramadol, before grad-student guilt made me reluctant to see or read anything recreational when I still had textbooks to go through.

In contrast, I have seen a lot of skippy DVDs, order tramadol online. Sometimes it isn't the DVD at all, but the player overheating or failing to keep up with the far more complex task of decoding DVD video. Buy Tramadol Now, More than once I have seen the extended edition of Lord of the Rings completely exhaust a DVD player---but I assume that the march of technology will fix this.

So on average, I have to say VHS is better quality, at least for rental movies. DVD is a clearer picture in the error-free case, but so far the average quality has been much worse.

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