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Researchers Propose a Revocable Identity-Based Encryption Scheme

jarkus4 Re:Something seems off... (76 comments)

from wiki (http://en.wikipedia.org/wiki/ID-based_encryption)

Identity-based systems allow any party to generate a public key from a known identity value such as an ASCII string. A trusted third party, called the Private Key Generator (PKG), generates the corresponding private keys. To operate, the PKG first publishes a master public key, and retains the corresponding master private key (referred to as master key). Given the master public key, any party can compute a public key corresponding to the identity ID by combining the master public key with the identity value. To obtain a corresponding private key, the party authorized to use the identity ID contacts the PKG, which uses the master private key to generate the private key for identity ID.

about a month ago
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Applying Pavlovian Psychology to Password Management

jarkus4 Re:Offline cracking (288 comments)

How exactly does the attacker know the passwords expiration date?

How exactly WOULDN'T they? If the attacker is doing offline brute forcing of passwords, that means they've obtained at least a partial copy of the database for the site (since they have to have the hashes and salts), at which point it's probable that they would have also obtained the expiration dates linked to each password.

Expiration dates != expiration time of current password. If you assume some maximum password expiration time (lets say 3 months) then as long as user is registered for at lest that amount of time the password expiration date doesnt provide any useful information about it. Unless of course hacker gets multiple database snapshots from widely different days, but then the system is probably doomed anyway.

about 6 months ago
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EU Votes For Universal Phone Charger

jarkus4 good in short, bad in long run (358 comments)

I think its quite good decision in short run, since it will kill all those weird connectors with no merit to them aside from being unique and driving charger sales for manufacturer. On the other hand in the long run its bad, since it actually hampers ("why bother if we have to put usb anyway") or even completely blocks some possible innovation (eg wirelessly charged waterproof phone with no external connections at all).
IMO the best course would be to keep this legislation for a several years (5-10) to get everyone to standardize and then repeal it. Given its EU though, I expect we are stuck with those connectors long after it will become completely obsolete...

about 7 months ago
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Your Phone Number Is Going To Get a Reputation Score

jarkus4 Re:not really unique (136 comments)

phone companies generally know this. Im not quite sure about this weird rating one - it doesnt seem to be connected with actual phone service providers.

about a year ago
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Your Phone Number Is Going To Get a Reputation Score

jarkus4 Re:Oh my. (136 comments)

Unlikely, since you cant get phone numbers for free. In regards to availability phone numbers are closer to IP addresses then emails (limited amount, regulation etc).
Also those numbers would quickly become 1000 ranked because of huge activity.

about a year ago
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Your Phone Number Is Going To Get a Reputation Score

jarkus4 not really unique (136 comments)

while phone number is unique at any given moment, it doesnt necessarily mean it stays with same person. Most providers sell the used numbers some time after they got inactive.
Good luck to the new buyer of 1000 ranked number :)

about a year ago
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Google's Scanning of Gmail To Deliver Ads May Violate Federal Wiretap Laws

jarkus4 Re:There is a problem ... and a solution. (325 comments)

only if by discarded you mean droping the mail with standard mailer deamon reply "couldnt be delivered". Otherwise I prefer my spam filter to actually work, thank you.

1 year,27 days
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Liberal Saudi Web Forum Founder Sentenced To 600 Lashes and 7 Years In Prison

jarkus4 Re:A prime example (506 comments)

How can a truly civilized race possibly take us as anything other than animals when we still dont worship the Great Kztplrhw and dont kill all heretics using most brutal tortures imaginable?
Thats what you meant, right?

about a year ago
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Ask Slashdot: How To Begin Simple Robotics As a Hobby?

jarkus4 Re:I would NOT second this (166 comments)

about 2 and 3: get some normal programming language instead of provided blocks. When I played with it in college we were using some C API with it, so we pretty much had a normal language available. Obviously there were still API limitations on our hardware interfaces, but for normal calculations, delays etc we could do pretty much whatever we wanted (it was simple unix programing with some hardware api).

as for 1: yeah, number of in and out slots was always a bit of a problem. Still you can do quite a lot within those limits.

about a year ago
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Ask Slashdot: How To Begin Simple Robotics As a Hobby?

jarkus4 Re:Lego Mindstorms kit (166 comments)

Ill second this: this is what we used in Introduction to Robotics course in my college.
During practicals we had to build and program robots to accomplish some moderately complex tasks on its own. It was great fun trying to program and work around hardware limitations in my teams robot - we overcomplicated it quite a bit and it turned out a bit inferior to its competitors. Still it gave me great impression of difference between controlling pure software stuff vs a real life hardware.

about a year ago
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EU Passes Resolution Against ITU Asserting Control Over Internet

jarkus4 Re:What's the catch? (133 comments)

its not really legislation as it has no binding power whatsoever. Its pretty much "Hey, we dont like this idea" shout from them.

about 2 years ago
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US Air Force Scraps ERP Project After $1 Billion Spent

jarkus4 Re:That's nothing! (362 comments)

2B figure relates to the total cost of program (including PR spendings and other stuff). .
On the other hand there is also some extra computer related costs:
"(...) $227 million in computer costs, including complicated application forms that slow processing times; and $332 million for other programming costs, including money to pay staff to process the forms (...)"

about 2 years ago
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Mozilla To Bug Firefox Users With Old Adobe Reader, Flash, Silverlight

jarkus4 Re:Who still uses silverlight? (247 comments)

Very large part of sites that want/need to stream DRMed video content.

about 2 years ago
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Mozilla To Bug Firefox Users With Old Adobe Reader, Flash, Silverlight

jarkus4 Re:Java? (247 comments)

Because they just turn java off on regular basis. Sometimes even when user explicitly tells them not to do this

about 2 years ago
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Foxconn Says Vocational Students Aren't Being 'Forced' To Work

jarkus4 dilbert reference (117 comments)

from S1E11 animated series episode:
boss:
"Everybody who donates will get one of these colorful, stylish I-get-to-keep-my-job T-shirts. Of course participation is completely 100% voluntary."

more than 2 years ago
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EU Parliament Adopts eCall Resolution

jarkus4 it will about balance itself (212 comments)

I guess it may help some people that crash in some remote place in the night (so basically where none would report it anyway).
Unfortunately it solves pretty much the wrong problem. The biggest issue with help is not that it is not notified in time, but that it cant arrive in time. There is not enough ambulances and they often have to travel vast distance to help. Adding new source of calls wont help.
Whats more they will now get more distracting calls from accidents that are resolved by participants or cops (no serious injuries - sensors cant tell about this) or even completely bogus from defective cars, so the ambulances will move around needlessly at some times (likely failing to help some extra people due to extra distance).

more than 2 years ago
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Rockstar Creates 'Cheaters Pool' For Game Hackers

jarkus4 Re:stop and RTFA first (228 comments)

From the Rockstar announcement:
"In the event we decide to absolve any of these cheaters for their past transgressions they may re-enter play with the general public, however a second offense will result in their indefinite banishment."
So:
1. it only applies to those that get moved back to normal servers
2. word "banishment" may mean ban, but may also mean just being poot in cheaters pool without chance of returning to normal game (and I think second interpretation is the correct one)

more than 2 years ago
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Phoronix Confirms GNU/Linux Steam and Source Engine Clients

jarkus4 Re:Good luck (324 comments)

Interesting... Mine is 13 MB while in tray, 20 - 25MB in library. Entering shop I get ~60MB. Seems like switching between html tabs (shop, community, news) wastes some memory (steam uses more after each switch). But after putting steam back in tray all that memory is released and it goes back to 13MB.

about 2 years ago
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LibreOffice 3.5 Released

jarkus4 docx support? (205 comments)

And does it finally have proper support for MS docx format? I rarely write anything in Writer and it works good enough in that aspect. Unfortunately my main use for such application is reading docs (specification etc) send by someone else and docx support is just abysmal - I had to install MS Word Viewer for this. And no, getting them to send it in some normal format is not always an option.

more than 2 years ago
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Yahoo, Facebook Test "Six Degrees of Separation"

jarkus4 did anyone read the article? (228 comments)

Everyone here is bitching about privacy breach, algorithm complexity etc. Actually it has nothing to do with this experiment. From TFA
"Anyone with a Facebook account can participate to verify if everyone is on average approximately six steps away from any other person on Earth. You’ll be asked to select one of your Facebook friends whom you believe is most likely to know the “target person” that has been assigned to you. A message will then be sent from friend to friend until you get it to the “target person.” The goal is to do this in as few steps as possible. "

Basically they are just repeating the old mail experiment, but with a new way of passing messages
- unless you (or one of your friends) participates nothing happens to your privacy
- no computer algorithm is involved
- no problem with celebrity profiles linking thousands of people that now nothing about each other

more than 3 years ago

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