Oh yeah...since you are afraid of keyloggers maybe you'd like this product
"Passprotection",
Introducing "Passprotection" - Keep your disk encrypted and avoid entering your bootpassword at everyboot. Now no one can use a keylogger to detect your bootuppassword..This makes your disk safer!!!! and keeps the disk encrypted so your data will still be safe!!! Get yours now...Install it everywhere!!!
and all it does is reenable the boot-bypass at each startup, so you never have to enter the boot prompt.
So..according to your logic, this ought to be safer right? The disk is still encrypted and you can't use a keylogger to detect the password...
You are absolutely correct, and I agree that it isn't a big hole..just a temporary way to get by the encryption, by people who know, If not used then it's not dangerous...but while you seem to understand the dangers of having it stolen there are lots of people who don't get it.
Now suppose I advertise a new product..."Passprotection",
Introducing "Passprotection" - Keep your disk encrypted and avoid entering your bootpassword at everyboot. Now no one can use a keylogger to detect your bootuppassword..This makes your disk safer!!!! and keeps the disk encrypted so your data will still be safe!!! Get yours now...Install it everywhere!!!
and all it does is reenable the boot-bypass..at each startup, so you never have to enter the boot prompt.
Yes that would be evil..but judging from the ridiculous crypto-kiddie comments I've seen I bet some of them would think it actually increases their security..
This guy doesn't understand public key cryptography. and the fact that he is modded up so high is evidence that a lot of slashdotters don't understand it either...
The best analogy I can come up with, is this is the equivalent of leaving a copy of your housekey under the doormat..and then claiming it's not a security problem, because you could not leave the key unless you already had the key...and sadly, he doesn't even understand that he is leaving a copy under the doormat.
Someone who doesn't already know the passphrase can't use it to get access to the drive.
Wrong....it makes it billions of times easier to crack... Here is why
Read his messages to see someone who goes from complete denial..to revealing a complete naivety..to grudgingly admission..(probably still not understanding it)
Finally here he admits [ barely ] that he never understood what was going on..but then starts with war stories about keyloggers would work too......blah..blah.....
Because..sadly..you are..wrong and are too stupid to understand the implications of what you are doing...
It's like leaving the key under the rock outside your house and then claiming that's not a security problem because you couldn't do it without having the key in the first place.
It's disingenous to say that I didn't describe in great detail, exactly what would be necessary
Second..
It's you who (crazily I might add) assumed that the disk might "magically" change from encrypted to plain text...that was honestly funny... I never imagined you would be so incredibly naive. Well you sure "proved" me wrong....hahahaha. I'm not sure that you get it yet that the data on the disk doesn't change when you enter the password.
So...
first you deny my attack would work..repeatedly...and "prove" it [ snicker ]
then you FINALLY admit my attack would work....say it didn't explain it in detail (see above) then mention that other attacks would work too so therefore I'm the one who didn't understand?
Hey..Newsflash...I always understood EXACTLY what was happening...at every level.
Will work.. The manufacturer even admits it...once again...from the manufacturers response to the article..
The scenario you describe is more or less the intended one, and you identify the risk inherent in the feature. If someone enables the bypass and the volume is immediately stolen, then the volume is open. However, this window is usually very small. The people who use it understand the risk.
Okay...I'm tired of this...if the manufacturer own admission can't convince you that you are wrong.. , I certainly can't
Yes a keylogger would work..but this is a disk encryption product. The idea of a disk encryption product is (I can't believe I'm explaining this) that if the computer is stolen, then no one can read the disk...and this is the one time, that if you stole the computer that someone COULD read the disk. And the manufacturer admits it . So it is relevant.
keeping a stolen disk unreadable is the whole FUCKING point of disk encryption. Otherwise, if your disk can't be stolen, then then who gives a SHIT about disk encryption!!...IF the DISK is on fucking PLUTO.. then adding disk encryption wouldn't make much FUCKING MUCH SENSE THEN WOULD IT!!!!
But if you catch the drive at exactly the right time... And freeze it's contents by shutting off the power) Anyone who knows how bootloaders work and knows public key cryptography) will be able find the password necessary to decrypt the drive.
At any other time.. the stolen drive would be a brick...The NSA couldn't read your data.
NO. The data is ALWAYS encrypted...it's just that when given the right password, the operating system can decrypt it..and the boot loader which needs to decrypt it, so it can load the operating system.
But I appreciate your honest attempt, but it's not quite that simple as just putting the drive in another computer. It would take a little work to decrypt it, but I'll bet I could do it. It might take awhile, but I believe I could do it, and I'm SURE someone who worked for the manufacturer could,
But I could never break PGP in a million years. and the manufacturer can't either. No one has has discovered a method
First--think about it what happens on a remote-reboot.
Windows is encrypted just like everything else.. 99.999% of the disk is encrypted.. only the very small bootloader (a few K) isn't
How can a remote-bootup work? Obviously it must somehow know enough to to decrypt the entire operating system..That's how windows re-starts (which is encrypted with everything else)....no password is supplied initially before windows loads..How can it know this?
Short answer ---the password is supplied by saving it --in plain text on an unencryted part of the disk.
It's like saying - Hey my house is has this unbreakable lock-- ( but this time and this time only..i'm gonna leave the combination under the rock by the door..and change the combination as soon as I know you got in.)
here is a short description of how PGP works -
PGP has a public key and a private key. It is possible to create a message for only a select group of people..by using multiple public keys..and 1 private key. Now the cool thing is that only the select group can read the message..each by using their own private key..which WAS NEVER USED IN THE ENCRYPTION....Think about this for a second...Only 1 private key was used, but multiple people can read read the message. It's like telling 10 different random people.. Hey..your private key (that I've never seen) will work on my door, and only a few others can get in...but everyone else, can't
My Aunt actually had a clever system that allowed multiple people into her yard using keylocks that allowed the samething...but I'll leave you to figure that out.
Thats why you can have multiple users..each with a unique password...and the password is never stored..rather the anti-password or public password is stored...and when the private password is combined with the anti-password(s) it can decrypt the drive.
So.....for the remote-reboot
Yes..the drive is still encrypted. But when you enable pre-authentication a special ONE-TIME user is created with a public and private key and he is added to the list of people who can access the drive..
Now, normally the secret password is never stored, but must be supplied by the user..at the bootloader process...otherwise 99.9999% of the disk couldn't be seen...but this time the secret key is saved..on the disk..unencrypted..
So for the unattended bootup..the bootloader sees a flag which tells it ahha..unattended bootup..set the user to ONE-TIMEUSER and the PASSWORD to ONE-TIMEUSERS-PASSWORD..Now we have the info necessary to decrypt the drive... and finally remove ONE-TIMEUSER from the list of valid users..
So here's how I would beat the encryption.
First I'd take the drive and put it in as a second drive, then I'd look at the boot table and find the boot partion and then look at the boot-record and disassemble the program..it's pretty short. Look at the bootloader code. Find out where it stores the password. Perhaps this is all publicly available. somewhere..Good companies do this so people can check their code.
Now I have enough to decrypt the disk...
Your test was trivial, It's not THAT simple, (i.e. you need to find the rock that the combination was put, but thats a matter of looking at the code...breaking PGP would mean inventing quantum computing or discovering new math
But walking past someone's cube and seeing their computer reboot, then quickly turning it off.. doesn't require a team of secret agents cutting off power to the city...although that would make a more realistic plot than most
I'm not slamming the software, I'm just pointing out that remotely rebooting this software does open up a vulnerability that wouldn't normally be there..(and the manufacturer agrees). Lot's of people seem to be claiming that this is just as safe as any other time just because I had access. But it's not, because i (probably) don't have PHYSICAL access at exactly this time.
Let's put it this way..if I had nuclear secrets on a the hard drive..I wouldn't be remotely rebooting it, and I'm pretty sure the manufacturer would agree.
Huh...You must have read an article about leprechauns and gotten confused..
lemme explain it for you..
Disk is encrypted.. System boots up and asks for password..user supplies password and operating system then can read disk....operating system cannot read disk unless password is entered..Now the operating system can read the disk, and some other layer of authentication applies. This makes using the encrypted system "easy" as the encryption is transparent to all programs and the user..it's done by a low level driver. If the disk is stolen, then it can't be accessed because the thief doesn't have the initial password....except...if pre-boot authentication is enabled...then for 1 reboot and 1 reboot only..the system will reboot w/o entering the password..
[ from the manufacturer ] (if you had bothered to read the article)
The scenario you describe is more or less the intended one, and you identify the risk inherent in the feature. If someone enables the bypass -and the volume is immediately stolen, then the volume is open. However, this window is usually very small. The people who use it understand the risk
So, my point...is that while the window is small...it is also particularly easy to detect..(just by looking) and also most likely to occur when no one is around which is the worst time for it to happen...
If you don't understand the above...please read it again until you do.
Okay, I understand that this is supposed to be for "remote" boots.
So, I'm the janitor and wander by your office..I've tried to break into your computer before, but I never knew the password...When I attempted to take your disk before, I realized that it was encrypted, and I couldn't use it. I nearly got caught that time.
Now, I and happen to see your computer reboot (you are not around). I know now that your data is likely vulnerable at this point. as you probably just set the bit for pre-boot-authentication.
I unplug your network cable and remove your hard drive, Plug your harddrive into my system..Get the data and recheck, the pre-boot authentication. Put the hard drive back into your computer. Turn it on. it continues the reboot process.. Except for the extra delay.....you never know I just got your data.
I NEVER had to know your password and I also know that you aren't around. And I know the instant you are vulnerable quite easily just by seeing your screen go blank...or perhaps detecting you off the network.
Yes, I do have to have physical accesss, but No, I don't need your password. If I'm fast enough, then you might not even notice...
You'd probably only use this feature if you were away from the computer, AND that's the one time you DON'T want to use it...Seems like a dangerous combination.
I'm working for secure-co..supposedly I work on my own secret project, but my boss has secret info that I want to know, but he always logs off when ever he leaves...
One day when my boss is gone, I see his laptop turn off automatically..ahh...I seize the opportunity...I quickly unplug the network and remove the hard drive...boom I've got his info without anyone knowing, and better yet..no one is even around because it's all done remotely. I steal the data, and recheck the automatic authentication, and reconnect it back to the network and turn it off....quietly slip out of the room..
Note...I never had to have access to his password..I just know that an automatic reboot, means vulnerability.
When I first heard about it, I mistakenly assumed volatile == unstable...
No, the volatile repository is exactly what this is for - packages that need constant adjustment and update to work as advertised.
I just learned about the volatile repository and it's the perfect solution, but sadly I, and I'm sure others, were unaware that this existed until now.
I wish some of this stuff was advertised a little more rather than buried in the documentation, but I'm glad I know now.
and I'm surprised at all the people attacking her. Did you see the picture? It was a prototype board with a bunch of led's and a 9v battery..there was no damn putty..
She didn't walk in with a gun or a bomb..just a bunch of blinking LEDs, and the police thought it would be reasonable to used deadly force? Electronics != Bomb...or even pretend bomb. do we as a society think that it's reasonable for police to assume anything they don't understand is dangerous enough to warrant killing someone for? Should my life depend on my ability to explain something to an idiot with a gun? Or should we put the emphasis on the person with the gun to justify his action of using deadly force.
And your comparison of a prototype board to a pretend gun...sheeesh.
Your witchhunt attitude scares me ALOT more than the MIT student with an LED!
I don't think people realize that how important this is. I converted my van to run on raw vegetable oil and have been quite happy with it. I can easily see this replacing mineral oils in a relatively short time. It is becoming more and more popular as diesel prices keep increasing.
Biodiesel is basically chemically altered vegetable oil that reduces viscosity (transesterfication) but is not necessary if you modify your diesel to reduce the viscosity by heating the oil to around 200F.
While electric cars are super neato and probably our long term solutions, I can see imagine that it's gonna be pretty hard to make an electric powered jet airplane, but I think an algae oil powered jet airplane might be pretty reasonable. After all kerosene (used for jet fuel) is very similiar to diesel #1.
- "PCI" - You just said "PCI" w/o permission. - But so did you. You said "PCI" w/o permission. - You just said "You said PCI w/o permission" - You just said "You said you just said PCI.." - You said "You said you said you said you said.. (Stack Overflow..)
I was pretty impressed too. I remember my brother showing it to me. I pulled out the CRC book and entered the most complicated looking integral I saw, and I was amazed that it computed the integeral symbolically . (i.e. not some lame numerical integration by trapezoidal or simpsons rule)
Seemed like magic at the time. This was probably on an 8088. I'll bet it was less than 400K. probably 1/100 the size of some of the others.
I remeber when PC Magazine reviewed Math packages.
They choose Mathematica and Maple V as the best; However they gave "Derive" ( a semi-obscure dos-fits-on-a-single-floppy-text-mode an honarable mention as it was the only one to get test gravitational potential problem correct and simplify nested radicals automatically but felt that that it interface and graphics were inferior to Mathematica and Maple V.
I guess they considered getting the correct answer to be a fairly unimportant requirement. I've got the review on my "Hall of Shame" .
Slashdot Mirror
Oh yeah...since you are afraid of keyloggers maybe you'd like this product
"Passprotection",
Introducing "Passprotection" - Keep your disk encrypted and avoid entering your bootpassword at everyboot. Now no one can use a keylogger to detect your bootuppassword..This makes your disk safer!!!! and keeps the disk encrypted so your data will still be safe!!! Get yours now...Install it everywhere!!!
and all it does is reenable the boot-bypass at each startup, so you never have to enter the boot prompt.
So..according to your logic, this ought to be safer right? The disk is still encrypted and you can't use a
keylogger to detect the password...
No. It's you that doesn't understand. Do you think you need the passphrase the second time?
....wait...where do you work again??
Now you just converted fort-knox encryption to kiddie-encryption..AND YOU ARE TOO STUPID TO REALIZE IT
You are absolutely correct, and I agree that it isn't a big hole..just a temporary way to get by the encryption, by people who know, If not used then it's not dangerous...but while you seem to understand the dangers of having it stolen there are lots of people who don't get it.
http://slashdot.org/comments.pl?sid=318069&threshold=4&commentsort=0&mode=nested&cid=20872393
he doesn't see the problem...
Now suppose I advertise a new product..."Passprotection",
Introducing "Passprotection" - Keep your disk encrypted and avoid entering your bootpassword at everyboot. Now no one can use a keylogger to detect your bootuppassword..This makes your disk safer!!!! and keeps the disk encrypted so your data will still be safe!!! Get yours now...Install it everywhere!!!
and all it does is reenable the boot-bypass..at each startup, so you never have to enter the boot prompt.
Yes that would be evil..but judging from the ridiculous crypto-kiddie comments I've seen I bet some of them would think
it actually increases their security..
This guy doesn't understand public key cryptography. and the fact
that he is modded up so high is evidence that a lot of slashdotters
don't understand it either...
The best analogy I can come up with, is this is the equivalent of leaving
a copy of your housekey under the doormat..and then claiming it's not
a security problem, because you could not leave the key unless you
already had the key...and sadly, he doesn't even understand that he
is leaving a copy under the doormat.
Someone who doesn't already know the passphrase can't use it to get access to the drive.
Wrong....it makes it billions of times easier to crack...
Here is why
http://slashdot.org/comments.pl?sid=318069&cid=20877683
Read his messages to see someone who goes from complete denial..to revealing a complete
naivety..to grudgingly admission..(probably still not understanding it)
http://slashdot.org/comments.pl?sid=318069&cid=20854711
http://slashdot.org/comments.pl?sid=318069&cid=20857859
http://slashdot.org/comments.pl?sid=318069&cid=20860575
Now..here he "proves" that it's not open..(showing utter naivety)
http://slashdot.org/comments.pl?sid=318069&cid=20871667
and again claiming that you need the password to break the
encryption
http://slashdot.org/comments.pl?sid=318069&cid=20871721
Finally here he admits [ barely ] that he never understood what was going on..but then starts
with war stories about keyloggers would work too......blah..blah.....
http://slashdot.org/comments.pl?sid=318069&cid=20882731
I seriously doubt he ever got it....except at the most superficial level
Because..sadly..you are..wrong and are too stupid to understand the implications of what
you are doing...
It's like leaving the key under the rock outside your house and then claiming that's
not a security problem because you couldn't do it without having the key in
the first place.
First...I did talk about the boot loader..here near the bottom
..that was honestly funny... I never imagined you would be so incredibly naive.
http://it.slashdot.org/comments.pl?sid=318069&cid=2087768
It's disingenous to say that I didn't describe in great detail, exactly what would be necessary
Second..
It's you who (crazily I might add) assumed that the disk might "magically" change from encrypted to
plain text.
Well you sure "proved" me wrong....hahahaha. I'm not sure that you get it yet that the data
on the disk doesn't change when you enter the password.
So...
first you deny my attack would work..repeatedly...and "prove" it [ snicker ]
then you FINALLY admit my attack would work....say it didn't explain it in detail
(see above) then mention that other attacks would work too so therefore I'm the one who didn't understand?
Hey..Newsflash...I always understood EXACTLY what was happening...at every level.
I'm teaching you something...pay attention.
Will work.. The manufacturer even admits it...once again...from the manufacturers response to the article..
The scenario you describe is more or less the intended one, and you identify the risk inherent in the feature. If someone enables the bypass and the volume is immediately stolen, then the volume is open. However, this window is usually very small. The people who use it understand the risk.
Okay...I'm tired of this...if the manufacturer own admission can't convince you that you are wrong..
, I certainly can't
Yes a keylogger would work..but this is a disk encryption product. The idea of a disk encryption product is
(I can't believe I'm explaining this) that if the computer is stolen, then no one can read the disk...and this
is the one time, that if you stole the computer that someone COULD read the disk. And the manufacturer admits
it . So it is relevant.
keeping a stolen disk unreadable is the whole FUCKING point of disk encryption. Otherwise, if your disk can't be stolen,
then then who gives a SHIT about disk encryption!!...IF the DISK is on fucking PLUTO.. then adding disk encryption
wouldn't make much FUCKING MUCH SENSE THEN WOULD IT!!!!
[ whew ]
I never said the data on the disk changes...Is that what you think happens when you supply a password..?
hahahahahahahahaha....
Don't understand the question..You can't.
But if you catch the drive at exactly the right time... And freeze it's contents by shutting
off the power) Anyone who knows how bootloaders work and knows public key cryptography) will be
able find the password necessary to decrypt the drive.
At any other time.. the stolen drive would be a brick...The NSA couldn't read your data.
NO. The data is ALWAYS encrypted...it's just that when given the right password, the operating
system can decrypt it..and the boot loader which needs to decrypt it, so it can load the
operating system.
But I appreciate your honest attempt, but it's not quite that simple as just putting the drive in another computer. It would take
a little work to decrypt it, but I'll bet I could do it. It might take awhile, but I believe I could do it, and I'm SURE someone who
worked for the manufacturer could,
But I could never break PGP in a million years. and the manufacturer can't either. No one has has discovered a method
First--think about it what happens on a remote-reboot.
Windows is encrypted just like everything else.. 99.999% of the disk is encrypted.. only the very small bootloader (a few K) isn't
How can a remote-bootup work? Obviously it must somehow know enough to to decrypt the entire operating system..That's how windows re-starts
(which is encrypted with everything else)....no password is supplied initially before windows loads..How can it know this?
Short answer ---the password is supplied by saving it --in plain text on an unencryted part of the disk.
It's like saying - Hey my house is has this unbreakable lock--
( but this time and this time only..i'm gonna leave the combination under the rock
by the door..and change the combination as soon as I know you got in.)
here is a short description of how PGP works -
PGP has a public key and a private key. It is possible to create a message for only
a select group of people..by using multiple public keys..and 1 private key. Now the cool thing
is that only the select group can read the message..each by using their own private key..which
WAS NEVER USED IN THE ENCRYPTION....Think about this for a second...Only 1 private key was used,
but multiple people can read read the message. It's like telling 10 different random people..
Hey..your private key (that I've never seen) will work on my door, and only a few others
can get in...but everyone else, can't
My Aunt actually had a clever system that allowed multiple people into her yard using
keylocks that allowed the samething...but I'll leave you to figure that out.
Thats why you can have multiple users..each with a unique password...and the password is
never stored..rather the anti-password or public password is stored...and when the private
password is combined with the anti-password(s) it can decrypt the drive.
So.....for the remote-reboot
Yes..the drive is still encrypted. But when you enable pre-authentication a special ONE-TIME user
is created with a public and private key and he is added to the list of people who can access the drive..
Now, normally the secret password is never stored, but must be supplied by the user..at the bootloader
process...otherwise 99.9999% of the disk couldn't be seen...but this time the secret key is saved..on
the disk..unencrypted..
So for the unattended bootup..the bootloader sees a flag which tells it ahha..unattended bootup..set the
user to ONE-TIMEUSER and the PASSWORD to ONE-TIMEUSERS-PASSWORD..Now we have the info necessary to decrypt
the drive... and finally remove ONE-TIMEUSER from the list of valid users..
So here's how I would beat the encryption.
First I'd take the drive and put it in as a second drive, then I'd look at the boot table and find the boot
partion and then look at the boot-record and disassemble the program..it's pretty short.
Look at the bootloader code. Find out where it stores the password. Perhaps this is all publicly available. somewhere..Good
companies do this so people can check their code.
Now I have enough to decrypt the disk...
Your test was trivial, It's not THAT simple, (i.e. you need to find the rock that the combination was put, but thats a matter of
looking at the code...breaking PGP would mean inventing quantum computing or discovering new math
Funny,
But walking past someone's cube and seeing their computer reboot, then quickly turning it off..
doesn't require a team of secret agents cutting off power to the city...although that would
make a more realistic plot than most
I'm not slamming the software, I'm just pointing out that remotely rebooting this software
does open up a vulnerability that wouldn't normally be there..(and the manufacturer agrees).
Lot's of people seem to be claiming that this is just as safe as any other time just because
I had access. But it's not, because i (probably) don't have PHYSICAL access at exactly
this time.
Let's put it this way..if I had nuclear secrets on a the hard drive..I wouldn't be remotely
rebooting it, and I'm pretty sure the manufacturer would agree.
Huh...You must have read an article about leprechauns and gotten confused..
...if pre-boot authentication is enabled...then for 1 reboot and 1 reboot
lemme explain it for you..
Disk is encrypted..
System boots up and asks for password..user supplies password and operating
system then can read disk....operating system cannot read disk unless password
is entered..Now the operating system can read the disk, and some other layer of
authentication applies. This makes using the encrypted system "easy" as the
encryption is transparent to all programs and the user..it's done by a low
level driver. If the disk is stolen, then it can't be accessed because
the thief doesn't have the initial password....except
only..the system will reboot w/o entering the password..
[ from the manufacturer ] (if you had bothered to read the article)
The scenario you describe is more or less the intended one, and you identify the risk inherent in the feature.
If someone enables the bypass -and the volume is immediately stolen, then the volume is open. However, this
window is usually very small. The people who use it understand the risk
So, my point...is that while the window is small...it is also particularly easy to
detect..(just by looking) and also most likely to occur when no one is around
which is the worst time for it to happen...
If you don't understand the above...please read it again until you do.
Okay, I understand that this is supposed to be for "remote" boots.
So, I'm the janitor and wander by your office..I've tried to break
into your computer before, but I never knew the password...When
I attempted to take your disk before, I realized that it was
encrypted, and I couldn't use it. I nearly got caught that
time.
Now, I and happen to see your computer reboot (you are not around).
I know now that your data is likely vulnerable at this point. as
you probably just set the bit for pre-boot-authentication.
I unplug your network cable and remove your hard drive,
Plug your harddrive into my system..Get the data and recheck,
the pre-boot authentication. Put the hard drive back into your
computer. Turn it on. it continues the reboot process..
Except for the extra delay.....you never know I just got your data.
I NEVER had to know your password and I also know
that you aren't around. And I know the instant you
are vulnerable quite easily just by seeing your
screen go blank...or perhaps detecting you off the
network.
Yes, I do have to have physical accesss, but No, I don't
need your password. If I'm fast enough, then you might
not even notice...
You'd probably only use this feature if you were away
from the computer, AND that's the one time you DON'T
want to use it...Seems like a dangerous combination.
I'm working for secure-co ..supposedly I work on my own secret project, but
..ahh...I seize the opportunity. ..I quickly unplug the network and remove the hard drive...boom I've
my boss has secret info that I want to know, but he always logs off when
ever he leaves...
One day when my boss is gone, I see his laptop
turn off automatically
got his info without anyone knowing, and better yet..no one is even around
because it's all done remotely. I steal the data, and recheck the automatic
authentication, and reconnect it back to the network and turn it
off....quietly slip out of the room..
Note...I never had to have access to his password..I just know that an
automatic reboot, means vulnerability.
When I first heard about it, I mistakenly assumed volatile == unstable...
No, the volatile repository is exactly what this is for -
packages that need constant adjustment and update to work as advertised.
I just learned about the volatile repository and it's the perfect solution, but
sadly I, and I'm sure others, were unaware that this existed until now.
I wish some of this stuff was advertised a little more rather than buried
in the documentation, but I'm glad I know now.
and I'm surprised at all the people attacking her. Did you see the picture? It was a prototype board
with a bunch of led's and a 9v battery..there was no damn putty..
Here's the pic
http://boingboing.net/images/cfa4827569_20070921device3.jpg
She didn't walk in with a gun or a bomb..just a bunch of blinking LEDs, and the police thought it would be
reasonable to used deadly force? Electronics != Bomb...or even pretend bomb. do we as a society think
that it's reasonable for police to assume anything they don't understand is dangerous enough to warrant
killing someone for? Should my life depend on my ability to explain something to an idiot with
a gun? Or should we put the emphasis on the person with the gun to justify his action of using
deadly force.
And your comparison of a prototype board to a pretend gun...sheeesh.
Your witchhunt attitude scares me ALOT more than the MIT student with an LED!
I don't think people realize that how important this is. I converted my van to run on
raw vegetable oil and have been quite happy with it. I can easily see this replacing
mineral oils in a relatively short time. It is becoming more and more popular as
diesel prices keep increasing.
Biodiesel is basically chemically altered vegetable oil that reduces viscosity
(transesterfication) but is not necessary if you modify your diesel to reduce the viscosity
by heating the oil to around 200F.
While electric cars are super neato and probably our long term solutions, I can see
imagine that it's gonna be pretty hard to make an electric powered jet airplane, but
I think an algae oil powered jet airplane might be pretty reasonable. After all
kerosene (used for jet fuel) is very similiar to diesel #1.
I agree it's not economical, but 10%/year degradation is FUD.
More like 1-2%/year for good panels in normal radiation.
(10-20% over TEN years)
Here's a graph..(read down)
http://www.solarstorms.org/Svulnerability.html
- "PCI"
- You just said "PCI" w/o permission.
- But so did you. You said "PCI" w/o permission.
- You just said "You said PCI w/o permission"
- You just said "You said you just said PCI.."
- You said "You said you said you said you said..
(Stack Overflow..)
CDSA sounds a lot like PAM. What does CDSA do that PAM does not?
100000 b.c. Early Engineers construct Earth
1000 b.c. Greek Engineers invent Mathematics
1600 a.d. English Engineers invent Calculus and legislate gravitational law.
1940 a.d. American Engineers write some equations and invent Atomic Bomb and once again prove their superiority to theoretical physicists
1960 a.d. Engineers take time out from inventing rock music and invent vaccine for polio
I don't know where they are.
I was pretty impressed too. I remember my brother showing it to me. I pulled out the CRC book and entered the most complicated looking integral I saw, and I was amazed that it computed the integeral symbolically . (i.e. not some lame numerical integration by trapezoidal or simpsons rule)
Seemed like magic at the time. This was probably on an 8088. I'll bet it was less than 400K. probably 1/100 the size of some of the others.
I remeber when PC Magazine reviewed Math packages.
They choose Mathematica and Maple V as the best; However they gave "Derive" ( a semi-obscure dos-fits-on-a-single-floppy-text-mode an honarable mention as it was the only one to get test gravitational potential problem correct and simplify nested radicals automatically but felt that that it interface and graphics were inferior to Mathematica and Maple V.
I guess they considered getting the correct answer to be a fairly unimportant requirement. I've got the review on my "Hall of Shame" .
I've never taken PC magazine seriously ever since