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User: cperciva

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  1. Correction... on FreeBSD 5.2-RELEASE Review · · Score: 5, Informative

    There is a [...] utility to perform binary security updates, but it does not yet work with 5.2-RELEASE.

    FreeBSD Update works with i386 FreeBSD 5.2-RELEASE. There haven't been any security fixes yet, so it doesn't do very much, but it does work.

  2. Re:RSA vs ECC on Crack the Code and Win a Million Bucks · · Score: 1

    This was on a PPro. On a vanilla Pentium the FFT wins at much lower lengths.

  3. Re:Why is this so hard? on Experts Critique SERVE Internet Voting System · · Score: 1

    Why do these things continue to go out to bid instead of being handled in academia where they should be?

    You know, computer scientists aren't necessarily good programmers. In fact, most computer scientists are incredibly bad programmers -- they may know all the algorithms, but actually being able to produce working code is a completely different matter.

  4. Re:RSA vs ECC on Crack the Code and Win a Million Bucks · · Score: 1

    You might be surprised. My entirely unoptimized RSA code (using the FFT) is 1/3 the speed of openssl for 2048 bit moduli, and it doesn't use the CRT trick, nor does it do the exponentiation intelligently (it uses an FFT to multiply by 1 if the relevant bit is zero -- I was more concerned about timing attacks than performance).

    If someone optimized my code, I'm pretty sure you'd see performance exceeding that of openssl.

  5. Re:RSA vs ECC on Crack the Code and Win a Million Bucks · · Score: 1

    If anything multiplication is O(n^1.58)

    Well, that is true... it's also O(n^(1+epsilon)). If you're going to throw asymptotics around, you might as well throw in the FFT. :)

  6. Meanwhile... on Fedora Core 1 For AMD64 test1 Available · · Score: -1, Flamebait

    If you want real, well-tested AMD64 support, try NetBSD or FreeBSD.

  7. Re:Sure. on Commercials Come To The Net (After This Word) · · Score: 1

    Not to mention, the volume levels are usually jacked up so if I'm using headphones, I'll get my eardrums popped.

    On the topic of sound and things which annoy us... why isn't there (in any OS I'm aware of) OS-based per-application volume control -- ie, something which sits between the application and the sound card, and adjusts that application's sound output based on that application's volume setting.

  8. Re:Fair Use on Copyrighted Haiku Delivers Spam Through Filters · · Score: 1

    IIRC, haiku are supposed to have a joke in the last line -- this one satisfies that requirement as well.

  9. Re:IMHO, but I must admit IAAL on Web Ad Trademark Law To Be Retested · · Score: 2, Interesting

    Playboy & playmate are famous trademarks, even though they have independent English-language meanings. If I do a search for "playmate," and a banner ad pops up for a non-Playboy adult-oriented site, how is that not trademark infringement?

    Well, one has to question the strength of these trademarks. The English-language words "playboy" and "playmate" have changed very significantly over the past 50 years -- moving to parallel the trademarks -- so it could be argued that the situation is similar to "Hoover [vacuum cleaners]", or "Kleenex [tissues]".

    Personally, I'd say that if people search for "playmate" without intending to find Playboy's web site, the trademark has lost its value.

    But IANAL -- I'd be interested to hear the parent's view.

  10. How to handle a GPL violation: on What is the Best Way to Handle a GPL Violation? · · Score: 1

    1. Remove the illegal code.
    2. Fire the person who introduced it.
    3. Pretend the entire event never happened.

    Oh, you're talking about someone else violating the copyright on *your* code...

  11. Re:I've got 4 current "investigations" open on What is the Best Way to Handle a GPL Violation? · · Score: 1

    . In one case, a company (in Germany) came back stating that they happen to have the 5 same exact function names in their application, and byte-for-byte identical perror() strings to our application, but they insist they're not using any of our code, but claim that they did use it "for documentation purposes" when writing their application. That one is still open and pending, and we'll be doing protocol sniffs to see if theirs match ours. We have certain "fingerprints" in our protocol, which can only be done by using the source directly.

    Ok, so they looked at your code, and wrote their code to be functionally equivalent. Where's the problem?

  12. Re:No, only 0.9094 TB on A Terabyte In A Cigar Box · · Score: 1

    If you want to say that hard drives don't count, then you need to explain-away the fact that hard drives DID come in multiples of 1024 bytes up until about the 4GByte days.

    My first hard drive was marketed as 40MB, and it held somewhere around 40,500,000 bytes. I was quite happy at the time about getting an extra half-megabyte for free.

    If everyone had been using powers of two back then, it would have been a 41.9 MB drive.

  13. Re:No, only 0.9094 TB on A Terabyte In A Cigar Box · · Score: 1

    In fact, 1 TB = 1024 bytes ^ 4 = 1099511627776 bytes

    Do you expect Gbps ethernet to run at 1024^3 bps?

    Do you expect a 2GHz CPU to run at 2*1024^3 Hz?

    Do you crash space probes into the surface of Mars because you assume that 1 km = 1024 m?

    The only thing which has ever been measured in powers-of-two is memory sizes.

  14. Hmm... on Windows Services For Unix Now Free Of Charge · · Score: 4, Funny

    POSIX environment... C compiler... you know, it should be possible to get my depenguinator to work here.

    I'm not sure about being able to write the filesystem image to disk, Windows might not allow that.

  15. Warning! on The Cheese Slicing Laser · · Score: 4, Funny

    Do not look at cheese slicer with remaining eye!

  16. Re:Please explain on Open Source Symbolic Math Packages? · · Score: 2, Informative

    Handling math isn't too far off from compiler design, you are just interpreting syntax and semantics and manipulating symbols in an intelligent manner.

    Numerical math, yes. Symbolic math is far more complicated. Integration, for example, requires the Risch integration algorithm, which is quite non-trivial; computing polynomial GCDs has been the subject of dozens and dozens of papers.

  17. Re:Ghost on Automatically Installing Linux from Bootable CD? · · Score: 1

    I would recommend configuring a DHCP client (with DHCP assigned hostname.)

    That's a great idea. Install your machines from a CD automatically, have them boot, connect to the network via DHCP, and get rooted before anyone even logs in.

  18. Mathematics on Engineer Deconstructs Literary Criticism · · Score: 1

    Wouldn't it be nice to work in a field where nobody can say you're wrong?

    That's why I like mathematics. Theorem, (optionally, lemmas), proof. End of story. The only way you can disagree is if you throw out the entire concept of logic or the axioms upon which it is based -- and if you do that, we'll usually throw *you* out. :)

  19. USPS? on FBI Can Inspect Bank Records w/o Court Orders · · Score: 5, Informative

    The part which I find the most scary about this hasn't been mentioned yet: The US Postal Service counts as a "financial institution" for the purpose of this act.

    As a result, an FBI agent can walk into the USPS, without a warrant, and demand a detailed listing of all the mail you receive.

  20. Re:Quick! on Linux 2.4.24 Release Fixes Root Vulnerability · · Score: 1

    Now that you mention it, there have been a few more downloads of that package than usual today...

  21. Colour calibration? on Spirit's First Mars Images · · Score: 0

    It looks like the colour calibration is a bit lacking in those images.

    Where did that Marsdial go, again?

  22. Err... on Stardust Apparently Successful · · Score: 1

    Today a comet, tomorrow Mars!

    Today, a space probe ran into a comet.

    NASA has been sending space probes *into* Mars for quite a long time...

  23. Re:/dev/random CD for sale! on What You Get When You Buy a Spam CD · · Score: 1

    Hmm, spam as sperm?

    Well, it does tend to contain the same content many times over... but it isn't necessarily unsolicited.

    Perhaps we should reclassify rapists as spammers, and treat them accordingly?

  24. Re:Cool! on India Plans Hypersonic Space Plane by 2007 · · Score: 4, Funny

    I think you're a bit confused here. This story is about India, not the USA.

  25. Re:Know what he's talking about? on Vint Cerf on the Future of the Net · · Score: 4, Informative

    vint cerf isn't commercially linked to the internet in the same way that gates is to windows

    Err.. Vint Cerf is a senior VP at WorldCom.