Incorrect. There are various rules on a SR. Two linier rules make for addition. One linier and one geometric make multiplication and division. One linier and one expoential... make a guess.
One Linier and one ossolating (sp?) rule make sin/cos/csc/sec and tan/atan with a bit of work.
At the request to my parents for a birthday present, they had to goto a mesuem gift store's deep storage to get me one.
I didn't know how to speeel engineer, and now I are one.
vim, make, cvs, and gcc are cross platform. Hate to be a troll, but the only use an IDE has is syntax highlighting. vim does this with:syntax on.
I was in the search for an IDE, kdevelop was ok. But a cvs repository, wel make make files, a sane ANSI-C compiler like gcc -Wall -Werror -ansi and good old vim with syntax highlighting is a joy to work with.
...humm...there are those who think once matter goes into a blackhole all information on it is lost. Since the black hole will only "give" out energy though Hawking radiation which slowly anialates the matter beyond the E.H. though matter anti-matter reactions spured on by a side effect of the uncertanty principle which says matter will appear out of no where and destroy itself quickly because it realized it shouldn't happend (paraphrased).
But these are the same people who who think thermodynamics is flawed which would cause the universe to immediatly die and start up again with new laws for us to learn...Penrose, you silly braniac you!
dd if=/dev/zero of=/dev/universe
Not quite. Q-Crypto is used as key exchange. But as others have noticed, garbage and noice look the same.
<P>
Alice sends to Bob and Eve is trying to spy. Alice entangles 128 pairs of photons, sends half of them down the network....(1)... Bob looks at the photons and says "ha! I can talk to Alice."
<P>
What says that Eve can't look at the photons at (1)? It would seem to Alice that Bob looked at them. And when Bob looks at them after Eve, they don't change.
<P>
How do entangled photons know when their mate was touched? A photon (a virtual partical aka boson) is transmitted from Bob's to Alice's. <B>We're sending photons to get photons.</B>
<P>
Remember kids, you can all you want with crypto, but you can't break the lays of themodynamics. The artical says, "<I>...the key will be protected by the laws of physics</I>". And what are the laws of thermo, chop liver?:)
<P>
Well guess what, "<I>The laws of physics givith, and they takith away. In the end, the only protection we have is how little we understand hard problems like discrete logarithms and quantum machanics</I>" - JLC
Symmetric algos a can be perfectly safe if for a given key K, the number of blocks B collected by an attacker is less then 2**L, where L is the bit length of K. This assumes the cipher is perfectly crafted.
You can make this statement from the laws of thermodynamics (Energy in a system is conserved). And since information is energy, (Think about data compression, is information lost in the message - Entropy? Think about an air compressor, is energy lost in the air - Temperature/UnitVolume?). Think about it for 5 minutes before you hit the reply button. Afterall, we live in the universe, not an equation sheet.
Now what about asymmetric algos? Do the laws of thermodynamics suggest there is conceivably a perfect public-key algorithm? Nope. The public key contains information about the private key, all the information you need in fact. So what protects us? It is our child-like understanding of these hard problems.
Now what about quantum crypto? Is this any different from asym algos? Information must be transferred. It cannot be destroyed.
SymAlgos: 2**L unknowns can be solved with 2**L equations. (if perfectly crafted equations are used in accordance with thermodynamics).
AsymAlgos: The private key can be derived from the public key. The only thing stopping you is your understanding of the mathematical problem.
QuantumCrypto: The session key can be deduced from the transmission by detecting the transmission of quantum state of the information (virtual particles like photons). And we know that information cannot be destroyed. The only thing stopping you is your understanding of quantum physical problem..
Granted, if one day someone proves the fundamental laws of thermodynamics wrong, we're all in trouble. But I doubt that will happen.
The key exchange problem - I would state - is by it's very nature a problem with no permanent solution. It implies the destruction and re-emergence of information on a massive scale. The only thing we can do is protect our selves with "strong" key exchange systems and prepare for the enviable: humanity's intellectual growth.
So that said, why gripe over a possible weakness in Rijndael when the CSE or the NSA have solved the hard problems of asym algos to get at your precious block cipher key used in all electronic transmissions? You're not safe no matter how strong the cipher is, even the proposed perfect cipher.
Founded in 1994 in Linux. Win95 was a rumer called Copland and the Internet was a not a household name...but the Carleton Student Engineering Society approved funding for The Carleton EngSoc Project. Hosting the provincial and national engineering websites, email lists, and acting as full blown ISP to all engeering students at Carleton University. Currently 1,700 users, we used to be the Linux system with the largest userbase back in the day.
All student run, completly funded by students and industry.
A side note: other engineering socities in Canada get frustrated with us Carleton folk because EngSoc is a computer system at Carleton, not the Student Government. Now that all "engsoc.universityname.ca" domains point to student governments, this leads to confusion. Why is it like this? Did I mention we gave out email, shell, application and network access as early as 1994 before the evening news ever knew what the internet was?
And what about that expoent? Where is it explained that b^e-1 = (b x b x.. x b) -1
Do we assume that they are using our notation and not polish notation? What about Martian notation? Where did we explain to them what multiplication looks like? What about expoents?
If I find one of those in Canada I'll plant a relay in the outside wall and flood their dangin' network with images of 3rd world starbucks child work force expliotation.
Blood vecells in the body have "one way" features in them. As far as I know, they can'tbe preserved like bones can.
<P>
Ducks have funky blood vecel systems as well.
The people who make decisions on important things like this don't know enough about what's going on. Judges make laws that are completely stoooooopid because they think the laws of the real world still hold relevance on the internet. Many people believe that if a cipher has been around for 5-10 years without any major attacks, it's safe. This isn't true. If you look at the AES finalists, they all employ 3 fundamental properties: a) input/output XORing b) a linear operation in each round c) a differential operation (S-box) in each round Because of the 3 biggest attacks on ciphers: 1) key recovery (basically knowing the input and output to the first and last rounds without even knowing the key is not good, so we XOR the input and output) 2) linear cryptoanalysis (guess what kinds of operations this is useful against?:) ) 3) differential cryptoanalysis (guess what kinds of operations this is useful against?:) ) Many of the ciphers used in BSD/Linux aren't using this for two reasons: 1) Script Kiddies can't write the code to attack these ciphers nor employ the HW horsepower to do it. 2) The AES is coming. When the standard is announced (not barred IP problems overseas), you can bet freahmeat and replay will have C/ASM/Java source code for many platforms. I hope this answers a lot of your questions. BlowFish (or even flipping the bits of you data!) is enough to keep the lazy hacker from getting at your system. Anything beyond that and you're investing efforts to keep 'advanced' hackers/corps away. Please feel free to drop me line at work jean-luc.cooke@entrust.com. I'm a cryptographer who's implementing the AES here at Entrust Tech.
User interfaces are an art. They cannot be done by simply throwing buttons up on a window. UI pros who are any good will tell you they have written a good UI first time though. You need to do survarys and formulate stats on a particutal UI for a product.
How many times out of the 100 users did they do what we asked them to do? How quickly did they pick up it up? Did it make their work/lives easier and/or more efficant?
UI is an art. It hurts hearing from people to repond to this question as if it was a religous war against mircosoft. "no bash = no good" is not an objective responce.
I feel this will be one of the pinacle articals of the net. Allong with Philly Zimm's PGP guide and a few others, this is a great job. I applaud you guys... even if I can't spell jlcooke@jlcooke.net
OK this is just stoopid. How can a US judge which means nothing to anyother country on the planet wave a finger at a group 1000's of km's away?
If a Brittsh judge told the FBI to pay Jimmy Pop Ali $500Million. The FBI would just say: "The heck with you. We don't have to listen to your laws".
So why should Iran be any differen? Does the USA really think that they are so important that their laws apply to the planet? Are all Americans to obnixious that they believe that an Iran gov't group will actually listen to Jackson?
It's attitudes like this that makes me think twice about the "Great American Society".
The German gov't has lifted crypto exports. Canadian gov't is buying it's crypto from industry. The US gov't has lifted (mostly) their crypto export rules.
Have we the public and our commerce taken the lead in cryptography? Will it hold? Or is the scene much more serious, have gov'ts broken most all of our ciphers and no longer fear what was once the empowering act or encryption?
I've read a few of the first posts here and I disgree with alot of what people say (surprise!).
I'm from Canada and it took me over a year to get a visa. A !@#^ year! I was born in the country who is sharing the worlds larger free trade agreement with the US, I'm a university student in Systems and Computer Engineering in CarletonU (Ottawa), my dad and step mom live here in Boston (visa sponsors) so I should have the easiest time.
EASY?!. If what I had to go though was easy, I would hate to imagine what someone from China would have to go though! I had to have my finger prints taken, a Canadien and US criminal background search (RCMP/FBI), and full physical to see if I'm fit. Not to see is I'm fit ehough to be part of the supream race called 'Americans', no the doctor told me all they care about is that you will not cost them any money. She was telling me - in the middle of a turn-your-head-and-cough test no less - that a man with less than 2 years left to live was let in because he was worth over $5M. Then I had to go to the US consolate's office in Montreal (the ONLY ONE IN CANADA <-- dumb and have an interview. Once I was there I found out that the whole process changed and some last minute fixing had to be done.
Once I crossed over for the first time after the 'approval' in Montreal, the border guard was saposed to take my finger prints again and send the paper work to the visa center and I would get my Green Card in 6 months, mean while I was given a peice of paper with my IM# and my name which would be good enough until I got the real deal.
But the border guard !@#$ed up and now, nearing the end of my work term and 2 weeks from going back home to my friends and school, I still don't have my green card.
So back to the issue.
My pay? It's alright. I'm a temp who gets alright $$$ I guess. But other people comming in, many of them are given out by man power agencies who exploit them. Many companies will not hire from those groups because they charge like $90/hour and the workers only get $40/hour for work that is unparalled in the company. So may companies actually have set up offices in New Deli and pay to have their workers there, pay just as much and feel much better about not comprimising their morals.
Final note: The US pays WAY WAY too much for tech people...even those who don't know what they're going. Which is really sad. Brilliant people come from all over the world be generally the work force is under qualified. And the US knows this. So they abuse this knowledge and put in the Immegration Glass Ceilings and make it next to impossible to get in. And once you are (believe me) they'll take the pot shot at some random worker and try to export them to see if they really want to stay in.
Slashdot Mirror
Incorrect. There are various rules on a SR. Two linier rules make for addition. One linier and one geometric make multiplication and division. One linier and one expoential... make a guess.
One Linier and one ossolating (sp?) rule make sin/cos/csc/sec and tan/atan with a bit of work.
At the request to my parents for a birthday present, they had to goto a mesuem gift store's deep storage to get me one.
I didn't know how to speeel engineer, and now I are one.
JLC B.Eng
Check out the Gift Shop: Buy a CD recorded at the CBC studios in the Diefenbunker!
I was in the search for an IDE, kdevelop was ok. But a cvs repository, wel make make files, a sane ANSI-C compiler like gcc -Wall -Werror -ansi and good old vim with syntax highlighting is a joy to work with.
My less than $0.02
But these are the same people who who think thermodynamics is flawed which would cause the universe to immediatly die and start up again with new laws for us to learn...Penrose, you silly braniac you! dd if=/dev/zero of=/dev/universe
Not quite. Q-Crypto is used as key exchange. But as others have noticed, garbage and noice look the same. ...(1)... Bob looks at the photons and says "ha! I can talk to Alice."
:)
<P>
Alice sends to Bob and Eve is trying to spy. Alice entangles 128 pairs of photons, sends half of them down the network.
<P>
What says that Eve can't look at the photons at (1)? It would seem to Alice that Bob looked at them. And when Bob looks at them after Eve, they don't change.
<P>
How do entangled photons know when their mate was touched? A photon (a virtual partical aka boson) is transmitted from Bob's to Alice's. <B>We're sending photons to get photons.</B>
<P>
Remember kids, you can all you want with crypto, but you can't break the lays of themodynamics. The artical says, "<I>...the key will be protected by the laws of physics</I>". And what are the laws of thermo, chop liver?
<P>
Well guess what, "<I>The laws of physics givith, and they takith away. In the end, the only protection we have is how little we understand hard problems like discrete logarithms and quantum machanics</I>" - JLC
You can make this statement from the laws of thermodynamics (Energy in a system is conserved). And since information is energy, (Think about data compression, is information lost in the message - Entropy? Think about an air compressor, is energy lost in the air - Temperature/UnitVolume?). Think about it for 5 minutes before you hit the reply button. Afterall, we live in the universe, not an equation sheet.
Now what about asymmetric algos? Do the laws of thermodynamics suggest there is conceivably a perfect public-key algorithm? Nope. The public key contains information about the private key, all the information you need in fact. So what protects us? It is our child-like understanding of these hard problems.
Now what about quantum crypto? Is this any different from asym algos? Information must be transferred. It cannot be destroyed.
Granted, if one day someone proves the fundamental laws of thermodynamics wrong, we're all in trouble. But I doubt that will happen.
The key exchange problem - I would state - is by it's very nature a problem with no permanent solution. It implies the destruction and re-emergence of information on a massive scale. The only thing we can do is protect our selves with "strong" key exchange systems and prepare for the enviable: humanity's intellectual growth.
So that said, why gripe over a possible weakness in Rijndael when the CSE or the NSA have solved the hard problems of asym algos to get at your precious block cipher key used in all electronic transmissions? You're not safe no matter how strong the cipher is, even the proposed perfect cipher.
All student run, completly funded by students and industry.
A side note: other engineering socities in Canada get frustrated with us Carleton folk because EngSoc is a computer system at Carleton, not the Student Government. Now that all "engsoc.universityname.ca" domains point to student governments, this leads to confusion. Why is it like this? Did I mention we gave out email, shell, application and network access as early as 1994 before the evening news ever knew what the internet was?
I read it and I understool it as:
.. x b) -1
eg.
AB = A*10 + B
not
AB = A + B
which is the simplest.
And what about that expoent? Where is it explained that b^e-1 = (b x b x
Do we assume that they are using our notation and not polish notation? What about Martian notation? Where did we explain to them what multiplication looks like? What about expoents?
I think it's done very badly.
If I find one of those in Canada I'll plant a relay in the outside wall and flood their dangin' network with images of 3rd world starbucks child work force expliotation.
Damn the man. Damn her to hell!
Blood vecells in the body have "one way" features in them. As far as I know, they can'tbe preserved like bones can.
<P>
Ducks have funky blood vecel systems as well.
JLC - can't speel.
#!/bin/perl -sp0777i$/=unpack('H*',$_);$_=`echo 16dio\U$k"SK$/SM$n\EsN0p[lN*1. .)*)$/)
lK[d2%Sa2/d0$^Ixp"|dc`;s/\W//g;$_=pack('H*',/((
Doesn't ENGLISH perl look like line noise to begin with?
Brazil uses 100% Ethanol Gas. Why don't we in Canada use it too? Well, ethanol at 20 below zero celcius tends to freeze.
What's my point? Well. There are alternatives. But like the Mac: it's just too damn expensive unless tonnes and tonnes of people use it.
JLC
The people who make decisions on important things like this don't know enough about what's going on. Judges make laws that are completely stoooooopid because they think the laws of the real world still hold relevance on the internet. Many people believe that if a cipher has been around for 5-10 years without any major attacks, it's safe. This isn't true. If you look at the AES finalists, they all employ 3 fundamental properties: a) input/output XORing b) a linear operation in each round c) a differential operation (S-box) in each round Because of the 3 biggest attacks on ciphers: 1) key recovery (basically knowing the input and output to the first and last rounds without even knowing the key is not good, so we XOR the input and output) 2) linear cryptoanalysis (guess what kinds of operations this is useful against? :) ) 3) differential cryptoanalysis (guess what kinds of operations this is useful against? :) ) Many of the ciphers used in BSD/Linux aren't using this for two reasons: 1) Script Kiddies can't write the code to attack these ciphers nor employ the HW horsepower to do it. 2) The AES is coming. When the standard is announced (not barred IP problems overseas), you can bet freahmeat and replay will have C/ASM/Java source code for many platforms. I hope this answers a lot of your questions. BlowFish (or even flipping the bits of you data!) is enough to keep the lazy hacker from getting at your system. Anything beyond that and you're investing efforts to keep 'advanced' hackers/corps away. Please feel free to drop me line at work jean-luc.cooke@entrust.com. I'm a cryptographer who's implementing the AES here at Entrust Tech.
As a non-American, I can tell you that it the arrogance of the states gets to me sometmes.
No offence Roblimo, but your statement here is one of those times!
The US is one country. Yes, you are the most powerful, all that other stuff you love telling everyone. But you're one country.
What if Russia demanded that a US publisher pay a Russian poet for the illigal use of his poetry? The good 'ol USofA wouldn't give a flying rats ass.
And why? Because Russia is another country and the US should not have to abide by any other law except its own.
Just sick is what your country is. Just sick.
User interfaces are an art. They cannot be done by simply throwing buttons up on a window. UI pros who are any good will tell you they have written a good UI first time though. You need to do survarys and formulate stats on a particutal UI for a product.
How many times out of the 100 users did they do what we asked them to do? How quickly did they pick up it up? Did it make their work/lives easier and/or more efficant?
UI is an art. It hurts hearing from people to repond to this question as if it was a religous war against mircosoft. "no bash = no good" is not an objective responce.
I feel this will be one of the pinacle articals of the net. Allong with Philly Zimm's PGP guide and a few others, this is a great job.
I applaud you guys... even if I can't spell
jlcooke@jlcooke.net
OK this is just stoopid. How can a US judge which means nothing to anyother country on the planet wave a finger at a group 1000's of km's away?
If a Brittsh judge told the FBI to pay Jimmy Pop Ali $500Million. The FBI would just say:
"The heck with you. We don't have to listen to your laws".
So why should Iran be any differen? Does the USA really think that they are so important that their laws apply to the planet? Are all Americans to obnixious that they believe that an Iran gov't group will actually listen to Jackson?
It's attitudes like this that makes me think twice about the "Great American Society".
Usless. It seems only Banks enforce 128bit web transations. Anyone want a program to break RSA-40bit? Just let me know.
JLC
Have we the public and our commerce taken the lead in cryptography? Will it hold? Or is the scene much more serious, have gov'ts broken most all of our ciphers and no longer fear what was once the empowering act or encryption?
Just a shameless plug for my school. </ALEX_AND_DAVE=IGNORE>
ECC? Humm. I wou;dn't trust it!
:)
Remember Fermats last theorum? It was proven using breakthoughs in Eliptic Curve theory.
Eliptic Curves are under HEAVY research now. ECC isn't safe.
Sorry for the spelling.
Did he retuire because he didn't liek the way that SGI is going non-M$?
I think so.
OK,
I've read a few of the first posts here and I disgree with alot of what people say (surprise!).
I'm from Canada and it took me over a year to get a visa. A !@#^ year! I was born in the country who is sharing the worlds larger free trade agreement with the US, I'm a university student in Systems and Computer Engineering in CarletonU (Ottawa), my dad and step mom live here in Boston (visa sponsors) so I should have the easiest time.
EASY?!. If what I had to go though was easy, I would hate to imagine what someone from China would have to go though! I had to have my finger prints taken, a Canadien and US criminal background search (RCMP/FBI), and full physical to see if I'm fit. Not to see is I'm fit ehough to be part of the supream race called 'Americans', no the doctor told me all they care about is that you will not cost them any money. She was telling me - in the middle of a turn-your-head-and-cough test no less - that a man with less than 2 years left to live was let in because he was worth over $5M. Then I had to go to the US consolate's office in Montreal (the ONLY ONE IN CANADA <-- dumb and have an interview. Once I was there I found out that the whole process changed and some last minute fixing had to be done.
Once I crossed over for the first time after the 'approval' in Montreal, the border guard was saposed to take my finger prints again and send the paper work to the visa center and I would get my Green Card in 6 months, mean while I was given a peice of paper with my IM# and my name which would be good enough until I got the real deal.
But the border guard !@#$ed up and now, nearing the end of my work term and 2 weeks from going back home to my friends and school, I still don't have my green card.
So back to the issue.
My pay? It's alright. I'm a temp who gets alright $$$ I guess. But other people comming in, many of them are given out by man power agencies who exploit them. Many companies will not hire from those groups because they charge like $90/hour and the workers only get $40/hour for work that is unparalled in the company. So may companies actually have set up offices in New Deli and pay to have their workers there, pay just as much and feel much better about not comprimising their morals.
Final note: The US pays WAY WAY too much for tech people...even those who don't know what they're going. Which is really sad. Brilliant people come from all over the world be generally the work force is under qualified. And the US knows this. So they abuse this knowledge and put in the Immegration Glass Ceilings and make it next to impossible to get in. And once you are (believe me) they'll take the pot shot at some random worker and try to export them to see if they really want to stay in.
The ramblings of an immegernt temp.
Humm,
SGI ownes CRAY Research. Have you guys seen the specs on their t3e? 2048 Liquid Cooled Alpha CPUs, 2GB of ram for each one. Drool.
But maybe having a modern OS on these things would slow it down anyways....talk amonst yourselves
Lactation rooms for nursing mothers
Humm, anyone want to debate the corporation endosment of have an on-site midwife? Campus based prostate sergon?