Re:RSA too much? Here's just MD5 in JavaScript
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I wish I had some mod points to mod this up as informative. It's neat seeing these little crypto routines running as standalones. Looking at the PGP source can be quite daunting especially the latest version for Windows it is huge! The old version 2.6.2 is quite easy to follow and I gather the MD5 hash is still used in the later versions.
You would think with all the parity checking methods available in digital media they would use a technique that completely removes the watermark during the decryption process.
As technical professionals we slashdotters have no trouble understanding how easy it would be to program secure servers for digital media transfer. The politics involved in the war against the internet are a bit more complex, but still pretty basic. When I am in a more skeptical mood I just write it all off as just the big players not wanting to make a major investment in the internet. After all, they have long standing business partners such as providers of paper, glue, binding CD's tape etc. that would be hurt if people downloaded instead of bought a physical media. Eventually these big players will embrace new technology, but for now it is easier to run a story about kiddie porn or a D&D holocaust to scare away public sentiment from the internet.
Maybe Napster like services will migrate towards both free music and paid premium downloads. No doubt there is a need for free music samples, especially from new budding artists. There is also the need for limiting access to premium works where an artist wants a per copy payment for their work.
Whatever your security needs, streaming is a good method of delivery. If you want to get really tough you can ^^^ the stream with the start address of the file as it is stored on your hard drive. This would be easy to do and as long as there are no commercially available cracks for sale it would be so difficult to recopy, that losses do to piracy would be under 1%.
I wonder if they are working on a new standard streaming cipher for this kind of exchange? Symmetrical Streaming ciphers are so much faster than RSA for this type of thing that we should have a simple to implement client/server protocal.
We still could use a simple quick RSA transaction at the very end of the download for payment and streaming cipher key exchange.
Guess it was Gemini XI where they actually got around to tethering two spacecraft together and practiced changing orbits. I was thinking that the logical way to know if the tether had broken would be to pass a current through the tether securing the two spacecraft. Of course they must have used a nonconducting tether or else they would have detected the induced current.
June 7, 1965 Duration: 4 Days, 1 hour, 56 min, 12 seconds Objective: Evaluate effects of prolonged space flight, demonstrate and evaluate performance of spacecraft and systems in 4-day flight, evaluate procedures for crew rest and work cycles, eating schedules, and realtime flight planning. Secondary objectives included: Demonstrate and evaluate EVA and control by use of HHMU and tether. Stationkeep and rendezvous with second stage of GLV. Evaluate spacecraft systems. Make in-and-out-of plane maneuvers. Further test OAMS retro backup capability.
So would this work for geostationary orbits that spend 12 hours in the Earths shadow? If so this would be the obvious solution for power generation when a satellite is in the umbra and can't use the solar panels. During the day the orbit could be restored from excess energy from the solar panels. If you search the web there is a link to the 60's Mercury project and tethers I beleive.
Why refract? If the Laser is of the right wavelength and power, it will create superheated steam when it hits the water drilling a tunnel straight to the target. Before the tunnel has a chance to collapse shoot through it.
Did anybody do the math? Sounds like we will still be accelerating a large volume of fluid over a very short period of time and that takes a huge amount of energy. Oh wait a minute this isn't a cap it's a Borg mind slug nevermind.
Slashdot used to be a good technical rag. Responses to an article such as this would often be technically qualified. You would see more responses e.g. "we ran into this problem at work when we tried to load all the bays and all the slots on an inexpensive model. We sent ESR in with his scope and he discovered voltage drops of so many millivolts over such and such a time period between J1 and C5 on the such and such a motherboard, kinda looked like somebody playing Iron Butterfly on the scope." Then we might get a followup post with someone offering a thoughtful solution such as tighter voltage regulation in the power supply so that others could work around the problem. If we wanted to read rhetorical bullshit we could print off the original article and staple it to our forehead!
Yup sounds like a voltage regulation problem. I imagine 1GHZ CPUs make sudden high demands on older power supplies that were not designed to handle the newer chips. Hope they mod up your post so that the "build it yourselfers" will no where to look. You would need to troubleshoot this with a really sensitive non invasive oscilloscope at the motherboard connectors under load. If nothing shows on the scope here then it might be capacitance in the mobo somewhere, should be easy enough to find. Nice to see manufacturers taking responsibility for their product bugs.
Good luck finding any detailed information on photon based computing. You will eventually end up hitting dead links just as the information starts to get interesting. And you ask why should this be so?
You can divide electronics and computing into three generations of hardware platforms. Vacuum tubes in Zhe 30's and 40's, discreet transisters in the 50's and 60's and finally integrated circuits from the 70's to present. Each evolution in hardware platform brought a huge infusion of capital into the computing and electronics industry. Each new generation also brought about huge increases in hardware efficiency and speed.
Now what if the powers that be made optical technology available to the public? You would expect that these new computers would be much faster than silicon-wire and be very efficient. No B fields and the ability to run perhaps tens of thousands of circuits in the same space. The paranoid might suggest that allowing the sale of such a machine would be a threat to national security, who knows. If history is any guide new hardware has often been developed and used secretly by states for a decade before the general public even hears about it. When did you first hear about the transister or the CDROM?
So with all this feedback these sites will know exactly what the most popular and most visited images are. With this information.XXX will naturally evolve, displaying women in just the right way to appeal to mens prurient lustings. Sounds kind of Darwinian doesn't it. Gee all the girls have to do is surf.XXX to see what guys want in the bedroom. Or maybe that would be like us guys reading the Cosmo perfect man articles to see what women want?
The tracking ability of a contemporary CD player to track and error correct the tiny data path on a wobbling Compact Disk is amazing. And yes your examples make the general concept of optical feedback mechanisms easier to understand.
No mechanical servo mechanism is going to be free of vibration at this accuracy. As is the case with Compact Disk, error correction plays a big part. The logical path for optical storage would be an extension of the existing spinning disk technology only making the CD tracks multilayer.
The precision that this article seems to imply seems to go way beyond that. If you used active magnetic mounting you would have to run the whole device in a vacuum for it to work otherwise even sound waves would cause vibration. This approach sounds too much like work.
You could store data in stationary cubes rather than use a rotating disk and servo mechanism to move the laser along a path. I imagine it would be easier to focus and modulate a large matrix of stationary lasers. Feedback loops and error correcting controled by a very fast clock could take care of any vibration.
This shifts the emphasis of isolating components from vibration to quickly adjusting and error correcting in response to feedback. Theoretically you could use a cube of Jello on a paintshaker to store your data using a closed loop optical system.
They could use magnetic suspension to damp out some of the major vibrations the way telescopes do.
You probably wouldn't use a strictly mechanical system to accomplish this degree of accuracy. Trying to damp the lenses so that they don't jitter even a nanometer would be impossible. They are probably modulating multiple beams to adjust the interference pattern.
Using a closed loop system that constantly tracks and adjusts the aim every couple of nanoseconds would resolve the rest of the vibration problems.
If anybody has any good links to closed loop technology please post. I have never found any good information on this stuff, probably due to people protecting their research.
Back in '94 you could alt tab to minimize AOL, and still use the active winsock to bring up your favorite web browser with web mail as your starting page. AOL never posted this solution that I know of so it really doesn't minimize the impact much. I got railroaded into using AOL back when the GNN service was replaced by AOL. It was inconveniant not having a POP3 server anymore for my Pegasus mail even though the winsock worked fine for browsing. I am guessing the primary motive for not letting people use a third party mail program such as Pegasus was to ensure that people would have to read all the spam before they could get to their Email.
These are desktop systems not just servers so they can't claim limited application as the reason for limiting hardware options and as you pointed out it certainly seems odd that they limit options like memory and mouse selection. You might have expected this to happen if they had loaded Linux on the cheap models and just made the package a price leader. Interestingly they went with the less expensive OS Linux and loaded it on their more robust and reliable machines (Albeit with few options) weird...
Actually the platform and options that Dell chose to offer with Linux are quite high quality. Linux people tend to be do it yourselfers that can add a stick of memory if needed on their own. A lot of people don't have time to buy and return a bunch of cheapo systems that don't work. Now if someone asks me where they can find a stable machine all I have to say is look for a Dell model with Linux loaded on it.
This is a really old technique that folks have been using for years with GIF's and Jpegs. This proposal sounds more like a key recovery method that would make strong encryption more palatable to law enforcement. By choosing a fixed protocol we make it both easier to use and easier to recover the key.
Unfortunately all of these computer builders have to compete on price. Their bargain models are bound to include cheap components and integrated proprietary software. I am sure that Dell, Gateway and others get a discount from the major suppliers when they use bios locked software like this.
I recently helped a friend of mine purchase a Dell. The cost competing model L had on board video, cheap components and proprietary software. For a hundred fifty dollars more she got a nice XPS model with top drawer video, and audio cards.
The Sound Blaster live install CD that came with the XPS system was seperate from the Dell recovery CD and was genuine Creative Labs, I doubt that it was BIOS locked but do correct me if I am wrong. When you have a choice don't go with the cheapest components they are bound to be junk.
The easiest way to generate random numbers using existing system components is to time one of the mechanical storage drives. Seek time when measured to the nanosecond is random. Think of it as timing a drawbridge opening and closing with a stopwatch and writing down the second the gates go up. Over repeated openings the second recorded will be random due to varying mechanical delays. Of course with a computer you are going to need RDTSC calls to get the timing accurate enough to detect the slight air buffeting of the hard drive.
The mesas should provide a natural fire line. I wonder what will happen to all the canyon wildlife being driven by the fire? The labs may end up being the new home for an armadillo or two.
I always wanted to be able to say that without being off topic! Obviously the way this virus propagates led authorities back to the correct server. Time stamps would quickly narrow the search down to victem number one. Since apparantly they have a list of all incoming calls to that server during the time period in question it may be easy to trace the perp. Of course if there are calls on the log from pay phones maybe not.
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I wish I had some mod points to mod this up as informative. It's neat seeing these little crypto routines running as standalones. Looking at the PGP source can be quite daunting especially the latest version for Windows it is huge! The old version 2.6.2 is quite easy to follow and I gather the MD5 hash is still used in the later versions.
Just my 2/3 worth
You would think with all the parity checking methods available in digital media they would use a technique that completely removes the watermark during the decryption process.
As technical professionals we slashdotters have no trouble understanding how easy it would be to program secure servers for digital media transfer. The politics involved in the war against the internet are a bit more complex, but still pretty basic. When I am in a more skeptical mood I just write it all off as just the big players not wanting to make a major investment in the internet. After all, they have long standing business partners such as providers of paper, glue, binding CD's tape etc. that would be hurt if people downloaded instead of bought a physical media. Eventually these big players will embrace new technology, but for now it is easier to run a story about kiddie porn or a D&D holocaust to scare away public sentiment from the internet.
Maybe Napster like services will migrate towards both free music and paid premium downloads. No doubt there is a need for free music samples, especially from new budding artists. There is also the need for limiting access to premium works where an artist wants a per copy payment for their work.
Whatever your security needs, streaming is a good method of delivery. If you want to get really tough you can ^^^ the stream with the start address of the file as it is stored on your hard drive. This would be easy to do and as long as there are no commercially available cracks for sale it would be so difficult to recopy, that losses do to piracy would be under 1%.
I wonder if they are working on a new standard streaming cipher for this kind of exchange? Symmetrical Streaming ciphers are so much faster than RSA for this type of thing that we should have a simple to implement client/server protocal.
We still could use a simple quick RSA transaction at the very end of the download for payment and streaming cipher key exchange.
Guess it was Gemini XI where they actually got around to tethering two spacecraft together and practiced changing orbits. I was thinking that the logical way to know if the tether had broken would be to pass a current through the tether securing the two spacecraft. Of course they must have used a nonconducting tether or else they would have detected the induced current.
June 7, 1965
Duration: 4 Days, 1 hour, 56 min, 12 seconds
Objective: Evaluate effects of prolonged space flight, demonstrate and evaluate performance of spacecraft
and systems in 4-day flight, evaluate procedures for crew rest and work cycles, eating schedules, and realtime flight planning. Secondary
objectives included: Demonstrate and evaluate EVA and control by use of HHMU and tether. Stationkeep and rendezvous with second stage of
GLV. Evaluate spacecraft systems. Make in-and-out-of plane maneuvers. Further test OAMS retro backup capability.
"If you believe they put a man on the moon" REM
So would this work for geostationary orbits that spend 12 hours in the Earths shadow? If so this would be the obvious solution for power generation when a satellite is in the umbra and can't use the solar panels. During the day the orbit could be restored from excess energy from the solar panels. If you search the web there is a link to the 60's Mercury project and tethers I beleive.
Why refract? If the Laser is of the right wavelength and power, it will create superheated steam when it hits the water drilling a tunnel straight to the target. Before the tunnel has a chance to collapse shoot through it.
Did anybody do the math? Sounds like we will still be accelerating a large volume of fluid over a very short period of time and that takes a huge amount of energy. Oh wait a minute this isn't a cap it's a Borg mind slug nevermind.
Slashdot used to be a good technical rag. Responses to an article such as this would often be technically qualified. You would see more responses e.g. "we ran into this problem at work when we tried to load all the bays and all the slots on an inexpensive model. We sent ESR in with his scope and he discovered voltage drops of so many millivolts over such and such a time period between J1 and C5 on the such and such a motherboard, kinda looked like somebody playing Iron Butterfly on the scope." Then we might get a followup post with someone offering a thoughtful solution such as tighter voltage regulation in the power supply so that others could work around the problem. If we wanted to read rhetorical bullshit we could print off the original article and staple it to our forehead!
DBCS!
DSCS!
DDCB!
Yup sounds like a voltage regulation problem. I imagine 1GHZ CPUs make sudden high demands on older power supplies that were not designed to handle the newer chips. Hope they mod up your post so that the "build it yourselfers" will no where to look. You would need to troubleshoot this with a really sensitive non invasive oscilloscope at the motherboard connectors under load. If nothing shows on the scope here then it might be capacitance in the mobo somewhere, should be easy enough to find. Nice to see manufacturers taking responsibility for their product bugs.
The links to battelle.org seem to be working today.
Good luck finding any detailed information on photon based computing. You will eventually end up hitting dead links just as the information starts to get interesting. And you ask why should this be so?
You can divide electronics and computing into three generations of hardware platforms. Vacuum tubes in Zhe 30's and 40's, discreet transisters in the 50's and 60's and finally integrated circuits from the 70's to present. Each evolution in hardware platform brought a huge infusion of capital into the computing and electronics industry. Each new generation also brought about huge increases in hardware efficiency and speed.
Now what if the powers that be made optical technology available to the public? You would expect that these new computers would be much faster than silicon-wire and be very efficient.
No B fields and the ability to run perhaps tens of thousands of circuits in the same space. The paranoid might suggest that allowing the sale of such a machine would be a threat to national security, who knows. If history is any guide new hardware has often been developed and used secretly by states for a decade before the general public even hears about it. When did you first hear about the transister or the CDROM?
So with all this feedback these sites will know exactly what the most popular and most visited images are. With this information .XXX will naturally evolve, displaying women in just the right way to appeal to mens prurient lustings. Sounds kind of Darwinian doesn't it. Gee all the girls have to do is surf .XXX to see what guys want in the bedroom. Or maybe that would be like us guys reading the Cosmo perfect man articles to see what women want?
The tracking ability of a contemporary CD player to track and error correct the tiny data path on a wobbling Compact Disk is amazing. And yes your examples make the general concept of optical feedback mechanisms easier to understand.
No mechanical servo mechanism is going to be free of vibration at this accuracy. As is the case with Compact Disk, error correction plays a big part. The logical path for optical storage would be an extension of the existing spinning disk technology only making the CD tracks multilayer.
The precision that this article seems to imply seems to go way beyond that. If you used active magnetic mounting you would have to run the whole device in a vacuum for it to work otherwise even sound waves would cause vibration. This approach sounds too much like work.
You could store data in stationary cubes rather than use a rotating disk and servo mechanism to move the laser along a path. I imagine it would be easier to focus and modulate a large matrix of stationary lasers. Feedback loops and error correcting controled by a very fast clock could take care of any vibration.
This shifts the emphasis of isolating components from vibration to quickly adjusting and error correcting in response to feedback. Theoretically you could use a cube of Jello on a paintshaker to store your data using a closed loop optical system.
They could use magnetic suspension to damp out some of the major vibrations the way telescopes do.
You probably wouldn't use a strictly mechanical system to accomplish this degree of accuracy. Trying to damp the lenses so that they don't jitter even a nanometer would be impossible. They are probably modulating multiple beams to adjust the interference pattern.
Using a closed loop system that constantly tracks and adjusts the aim every couple of nanoseconds would resolve the rest of the vibration problems.
If anybody has any good links to closed loop technology please post. I have never found any good information on this stuff, probably due to people protecting their research.
Back in '94 you could alt tab to minimize AOL, and still use the active winsock to bring up your favorite web browser with web mail as your starting page. AOL never posted this solution that I know of so it really doesn't minimize the impact much. I got railroaded into using AOL back when the GNN service was replaced by AOL. It was inconveniant not having a POP3 server anymore for my Pegasus mail even though the winsock worked fine for browsing. I am guessing the primary motive for not letting people use a third party mail program such as Pegasus was to ensure that people would have to read all the spam before they could get to their Email.
These are desktop systems not just servers so they can't claim limited application as the reason for limiting hardware options and as you pointed out it certainly seems odd that they limit options like memory and mouse selection. You might have expected this to happen if they had loaded Linux on the cheap models and just made the package a price leader. Interestingly they went with the less expensive OS Linux and loaded it on their more robust and reliable machines (Albeit with few options) weird...
Actually the platform and options that Dell chose to offer with Linux are quite high quality. Linux people tend to be do it yourselfers that can add a stick of memory if needed on their own. A lot of people don't have time to buy and return a bunch of cheapo systems that don't work. Now if someone asks me where they can find a stable machine all I have to say is look for a Dell model with Linux loaded on it.
This is a really old technique that folks have been using for years with GIF's and Jpegs. This proposal sounds more like a key recovery method that would make strong encryption more palatable to law enforcement. By choosing a fixed protocol we make it both easier to use and easier to recover the key.
Unfortunately all of these computer builders have to compete on price. Their bargain models are bound to include cheap components and integrated proprietary software. I am sure that Dell, Gateway and others get a discount from the major suppliers when they use bios locked software like this.
I recently helped a friend of mine purchase a Dell. The cost competing model L had on board video, cheap components and proprietary software. For a hundred fifty dollars more she got a nice XPS model with top drawer video, and audio cards.
The Sound Blaster live install CD that came with the XPS system was seperate from the Dell recovery CD and was genuine Creative Labs, I doubt that it was BIOS locked but do correct me if I am wrong. When you have a choice don't go with the cheapest components they are bound to be junk.
The easiest way to generate random numbers using existing system components is to time one of the mechanical storage drives. Seek time when measured to the nanosecond is random. Think of it as timing a drawbridge opening and closing with a stopwatch and writing down the second the gates go up. Over repeated openings the second recorded will be random due to varying mechanical delays. Of course with a computer you are going to need RDTSC calls to get the timing accurate enough to detect the slight air buffeting of the hard drive.
ROFL should be interesting to see who and how people try to crack it.
The mesas should provide a natural fire line. I wonder what will happen to all the canyon wildlife being driven by the fire? The labs may end up being the new home for an armadillo or two.
I always wanted to be able to say that without being off topic! Obviously the way this virus propagates led authorities back to the correct server. Time stamps would quickly narrow the search down to victem number one. Since apparantly they have a list of all incoming calls to that server during the time period in question it may be easy to trace the perp. Of course if there are calls on the log from pay phones maybe not.