and SOLIDWORKS. Hey, anyone with influence. Mac. OS X. Solidworks. Dual G5. Please?
Sorry, it's unlikely it'll happen anytime soon. We got a (pretty high-up) representative of SolidWorks visiting our site some time ago and he pushed the fact that SolidWorks is Windows only as its great advantage...;-/ Most probably they'll have really hard time trying to port the thing to anything but Windows....
Remember: The old adage "fight fire with fire" does not apply to non-metaphorical fires.
Actually it does -- a wildfire sucks air from earth surface like crazy, so if you ignite another fire just at the right place at the right time it will be propagating towards the original fire and when they collide both will have no more fuel to burn.
Learned from some cowboys/indians book when I was a kid;-)
Yeah, '+' is a perfectly good way to express string concatenation in more than one language;-), but my point was that you 1) concatenate your salt with hash (so that re-hasher would know what was the salt value ) and b) salt and password are NOT concatenated, they are two independent arguments to the hashing function. (actually what UNIX crypt does is encrypting salt with password being a key).
and anotehr one -- make hash function expensive
on
Who Is An ISP?
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· Score: 2, Informative
MD5 would be a bad idea since it's optimized to be EASY to compute. For the opt-out list an EXPENSIVE strong hash can be specified. Again, remember how old UNIX crypt(3C) function was deliberately slowed down to prevent this kind of dictionary attack. Solaris manpage still says: "It is based on a one-way encryption algorithm with variations intended (among other things) to frustrate use of hardware implementations of a key search".
Actually, making this function REALLY expensive is a good way to move some $$ from spammers to chip makers and maybe even make spam unprofitable! Update list often enough and change salt values so that before every e-mail is sent an expensive hash has to be actually _computed_ (rather than looked-up in a huge database).
Paul B.
this is why UNIX passwords have 'a grain of salt'!
on
Who Is An ISP?
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· Score: 2, Insightful
... it is easy to take a dictionary of common passwords (or e-mail addresses), hash it and store on a CD, then match hashes from CD with hashed e-mail list. It is much harder is hash includes even a short 'salt' prefix (for 2-letter salt your encripted dictionary will require 1,024 CDs).
OTOH, I understand that you were talking about something which is (slightly? substantially?) different, but it might be useful to keep those simple tricks from the old days in mind.
The kids who played Jak I since became teens who are more interested in what II has to offer!
Not that I have a slightest clue about the game in question;-), but it was mentioned that the first one is rated for younger kids while the second one rated suitable for teens.
You are absolutely right that people do not need to worry about power consumption AS LONG AS THE DAMNED THING DOES NOT MELT!;-) (and it looks like they are going to be melting pretty soon now).
Seriously, the power processors dissipate determines how close together they can be packed, and that average distance DOES set an ultimate limit on the latency of communications between the processors (speed of light, you know... ?;-) ), and, of course, latency means efficiency, or how much a given task can be parallelized...
There _many_ systems based on parts of BSD out there. (NT, OSX, etc...)
NT??? From what I've heard NT5 was written by a bunch of DEC VMS guys and architecturally is closer to VMS than to ANY Un*x. The fact that they took BSD IP stack does not make them BSD-based, sorry...
Interstingly, optical processors aren't faster because light is faster than electricity. They are faster because they have much faster rise and fall times between digital on and digital off.
Actually the interesting question is not why optical processors are "fast" but why semiconductor processors are "slow"! Individual transistor on/off switch time can be as small as several picoseconds, but we are not seeing sub-THz clock frequencies because CMOS speed is limited by RC time constant of the (critical path) wires.
OTOH, as my advisor said long time ago, "You do not need light to get speed of light", if you use well-matched low-loss transmission lines (preferably superconductive;-) ) to move information around the chip you will get closer to being limited by speed of light. (Trust me, this is what I do for living!;-) )
One big advantage of the proposed optical architecture is that it utilises the broadcasting ability of light in free space, something which can not be done with point-to-point transmission lines.
Paul B.
As for the reasons, think what movies are MADE on!
on
Linux in Movies?
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· Score: 1
If you have a cluster of 1024+ Linux boxen humming in the background, it is REALLY easy to find someone who'd offer a helpful solution to the "Hey, we need a weird+nerdy computer screen here!" problem.;-)
Well, as in f(int x) { int old, new;/* blah, blah */} 'new' is a reserved keyword in C++, but an absolutely valid (and even meaningful!) variable name in C.
This is prolly one of the most "insightful" comments I've read in/. in a long time... Right next to carrying "The Bill of Rights" and "HowTo deal with traffic cops" in one's glove compartment...;-)
No, really, not that I want to try it next time I am stopped (and I am not exactly sure if it'd work in the US), but I do like the idea!
Driver's manuals for both US states where I lived (NY and CA)got to great length to explain that "driving is a priviledge, not a right", this is why cops can stop and search a car, but not a pedestrian (without probable cause), AFAIK.
Despite my respect for your 5-digit/. ID number (and vaguely mainframe-ish/VMS-ish UID;-) ), I would have to disagree with either the contents of your post or the lack of tags around it...
I had an impression that "Driving on the public highways" is not a "Right", driving on your own private property OR public property (where it does not violate other laws) is not different from walking/bicycling/rollerblading/swimming/riding a wheelchair/whatever... Am I right?
Who says a WORD about "avoid[ing] paying a gas tax"??? No, it's The government hopes to raise 650 million euros a year through the new charges! you will keep the same tax (if not more, because originally you will be told that "we need more $$ to maintain this new great satellite-based infrastructure", and you will never get anything back...
The government hopes to raise 650 million euros a year through the new charges.
Even given privacy/personal liberties angle to be completely aside (which I am not ready to do just yet!), the only "fair" way to implement such a system would be if "they" would promise to take less tax on private citizen as a result of that. No, "they" just want to get more bucks to spend on bureocracy... (relating to the old argument "If not for the Govt., you would not have the modern highway system")
Meanwhile, the family which once earned $1,000,000 a year suddenly finds everything twice as expensive, lowering their effective income to $500,000.
Not really, because a major part of that $1M is spent not on the same things that poor man's $25K would be spent, right? Even assuming that one actually burns through $1M a year in personal consumption (easier than I thought, only $2739/day;-) ), it's not going to be spent on bread and milk and even cheap booze...
Slashdot Mirror
Yeah, it was a pity to see SGI going, going, going, almost gone... ;-( Or are people in video business still use them?
(They did have very beautiful and powerful boxes for the time)
Paul B.
and SOLIDWORKS. Hey, anyone with influence. Mac. OS X. Solidworks. Dual G5. Please?
;-/ Most probably they'll have really hard time trying to port the thing to anything but Windows....
Sorry, it's unlikely it'll happen anytime soon. We got a (pretty high-up) representative of SolidWorks visiting our site some time ago and he pushed the fact that SolidWorks is Windows only as its great advantage...
Paul B.
It did work like charm for me!
Paul B.
C'mon, it was not meant to be taken seriously (and it does not deserve to be moderated Insightful ;-) ).
Paul B.
Maybe if you ask your manager nicely you will be able to take some old data home to play with it in the context of yoru project?
Paul B.
Remember: The old adage "fight fire with fire" does not apply to non-metaphorical fires.
;-)
Actually it does -- a wildfire sucks air from earth surface like crazy, so if you ignite another fire just at the right place at the right time it will be propagating towards the original fire and when they collide both will have no more fuel to burn.
Learned from some cowboys/indians book when I was a kid
Paul B.
Yeah, '+' is a perfectly good way to express string concatenation in more than one language ;-), but my point was that you 1) concatenate your salt with hash (so that re-hasher would know what was the salt value ) and b) salt and password are NOT concatenated, they are two independent arguments to the hashing function. (actually what UNIX crypt does is encrypting salt with password being a key).
Paul B.
yeah, you need some sleep! ;-)
SaltedHash = SaltString+HashFn(SaltString, Plaintext)
MD5 would be a bad idea since it's optimized to be EASY to compute. For the opt-out list an EXPENSIVE strong hash can be specified. Again, remember how old UNIX crypt(3C) function was deliberately slowed down to prevent this kind of dictionary attack. Solaris manpage still says: "It is based on a one-way encryption algorithm with variations intended (among other things) to frustrate use of hardware implementations of a key search".
Actually, making this function REALLY expensive is a good way to move some $$ from spammers to chip makers and maybe even make spam unprofitable! Update list often enough and change salt values so that before every e-mail is sent an expensive hash has to be actually _computed_ (rather than looked-up in a huge database).
Paul B.
... it is easy to take a dictionary of common passwords (or e-mail addresses), hash it and store on a CD, then match hashes from CD with hashed e-mail list. It is much harder is hash includes even a short 'salt' prefix (for 2-letter salt your encripted dictionary will require 1,024 CDs).
OTOH, I understand that you were talking about something which is (slightly? substantially?) different, but it might be useful to keep those simple tricks from the old days in mind.
Paul B.
The kids who played Jak I since became teens who are more interested in what II has to offer!
;-), but it was mentioned that the first one is rated for younger kids while the second one rated suitable for teens.
Not that I have a slightest clue about the game in question
Paul B.
You are absolutely right that people do not need to worry about power consumption AS LONG AS THE DAMNED THING DOES NOT MELT! ;-) (and it looks like they are going to be melting pretty soon now).
;-) ), and, of course, latency means efficiency, or how much a given task can be parallelized...
Seriously, the power processors dissipate determines how close together they can be packed, and that average distance DOES set an ultimate limit on the latency of communications between the processors (speed of light, you know... ?
Paul B.
Footprint now seems to be measured in "tennis courts" ;-)
Paul B.
There _many_ systems based on parts of BSD out there. (NT, OSX, etc...)
NT??? From what I've heard NT5 was written by a bunch of DEC VMS guys and architecturally is closer to VMS than to ANY Un*x. The fact that they took BSD IP stack does not make them BSD-based, sorry...
Paul B.
Interstingly, optical processors aren't faster because light is faster than electricity. They are faster because they have much faster rise and fall times between digital on and digital off.
;-) ) to move information around the chip you will get closer to being limited by speed of light. (Trust me, this is what I do for living! ;-) )
Actually the interesting question is not why optical processors are "fast" but why semiconductor processors are "slow"! Individual transistor on/off switch time can be as small as several picoseconds, but we are not seeing sub-THz clock frequencies because CMOS speed is limited by RC time constant of the (critical path) wires.
OTOH, as my advisor said long time ago, "You do not need light to get speed of light", if you use well-matched low-loss transmission lines (preferably superconductive
One big advantage of the proposed optical architecture is that it utilises the broadcasting ability of light in free space, something which can not be done with point-to-point transmission lines.
Paul B.
If you have a cluster of 1024+ Linux boxen humming in the background, it is REALLY easy to find someone who'd offer a helpful solution to the "Hey, we need a weird+nerdy computer screen here!" problem. ;-)
Paul B.
Well, as in /* blah, blah */}
f(int x) { int old, new;
'new' is a reserved keyword in C++, but an absolutely valid (and even meaningful!) variable name in C.
Paul B.
Good luck compiling a C program which has a variable named 'new'! ;-)
Paul B.
This is prolly one of the most "insightful" comments I've read in /. in a long time... Right next to carrying "The Bill of Rights" and "HowTo deal with traffic cops" in one's glove compartment... ;-)
No, really, not that I want to try it next time I am stopped (and I am not exactly sure if it'd work in the US), but I do like the idea!
Paul B.
Driver's manuals for both US states where I lived (NY and CA)got to great length to explain that "driving is a priviledge, not a right", this is why cops can stop and search a car, but not a pedestrian (without probable cause), AFAIK.
Paul B.
Despite my respect for your 5-digit /. ID number (and vaguely mainframe-ish/VMS-ish UID ;-) ), I
would have to disagree with either the contents of your post or the lack of tags around it...
I had an impression that "Driving on the public highways" is not a "Right", driving on your own private property OR public property (where it does not violate other laws) is not different from walking/bicycling/rollerblading/swimming/riding a wheelchair/whatever... Am I right?
Paul B.
... hoping to be able to remotely" turn off a POLICE car?
Also, in '1984' there were many Very Good Things implemented, if one wishes to put orwellian implications aside...
Paul B.
Who says a WORD about "avoid[ing] paying a gas tax"??? No, it's The government hopes to raise 650 million euros a year through the new charges! you will keep the same tax (if not more, because originally you will be told that "we need more $$ to maintain this new great satellite-based infrastructure", and you will never get anything back...
Paul B.
The government hopes to raise 650 million euros a year through the new charges.
Even given privacy/personal liberties angle to be completely aside (which I am not ready to do just yet!), the only "fair" way to implement such a system would be if "they" would promise to take less tax on private citizen as a result of that. No, "they" just want to get more bucks to spend on bureocracy... (relating to the old argument "If not for the Govt., you would not have the modern highway system")
Paul B.
Meanwhile, the family which once earned $1,000,000 a year suddenly finds everything twice as expensive, lowering their effective income to $500,000.
;-) ), it's not going to be spent on bread and milk and even cheap booze...
Not really, because a major part of that $1M is spent not on the same things that poor man's $25K would be spent, right? Even assuming that one actually burns through $1M a year in personal consumption (easier than I thought, only $2739/day
Paul B.