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Plausible Deniability From Rockstar Cryptographers

J. Karl Rove writes "Nikita Borisov and Ian Goldberg (of many, many other projects) have released Off the Record Messaging for Gaim. Encrypt an IM, prove (at the time) that it came from you, and deny it later. The authentication works only when the message is sent; anybody can forge all the messages he wants afterwards (toolkit included). Captured or archived messages prove nothing. And forward secrecy means Big Brother can't read your messages even if he wiretaps you AND grabs your computer later on. All the gooey goodness of crypto, with none of the consequences! They have a protocol spec, source code, and Debian and Fedora binaries."

20 of 358 comments (clear)

  1. My foolproof encryption method by Anonymous Coward · · Score: 4, Funny

    Who needs any of this? Just try what I do: write your messages as GW Basic programs. This is so uncrackable that even I can't tell what is in it after I use it.

  2. Re:FP by DarkHelmet · · Score: 2, Funny
    Yes... but can you prove it with absolute certainty?

    Or is your FP plausibly deniable? ;)

    --
    /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i
  3. Just need one other thing by raider_red · · Score: 3, Funny

    A way to deny some of the stupider posts I've made on Slashdot.

    --
    It's good to use your head, but not as a battering ram.
    1. Re:Just need one other thing by Xenographic · · Score: 2, Funny

      Just be glad you don't have DJB, or he'd make you find and cryptographically deny 10 stupid posts ;-]

      If anyone asks, I'll cryptographically deny this new meme.

  4. I wonder by ab384 · · Score: 4, Funny

    How much later is "later"?

    "Did I just say that I'd walk the dog?"
    "Yes!"
    "Nobody can prove that I just said that."

  5. Rockstar Cryptographers? by Chris+Mattern · · Score: 3, Funny

    Does this mean it's going to feature in the next edition of GTA?

    Chris Mattern

  6. Monica by Anonymous Coward · · Score: 1, Funny

    It wasn't Monica who got in trouble for spilling something.

  7. I wonder by WormholeFiend · · Score: 2, Funny

    Is there an Internet Cafe at Guantanamo?

  8. Perl-ize this with that 25 line P2P by fuzzy12345 · · Score: 4, Funny

    Quick, someone, anyone. Combine this with yesterday's P2P In 15 Lines of Perl: http://developers.slashdot.org/article.pl?sid=04/1 2/15/1953227&tid=95&tid=156&tid=1

    --

    Everybody's a libertarian 'till their neighbour's becomes a crack house.
  9. Ah... so that explains this IM conversation... by Anonymous Coward · · Score: 3, Funny

    BillG: So, did the donation to the SCO fund to kill Linux go through?

    SBallmer: Yep, sure did. And we even explained the need for us to buy one of their licenses for unlimited computers. You know, for our in-house independent benchmarking company. You know, the whole "Get the Facts" campaign?

    BillG: I see... but this SCO thing doesn't look like it's going to work. We need to go after them in even more indirect ways to avoid more antitrust sanctions. With Ashcroft gone, we may get a harder wrist-slap than last time.

    SBallmer: We're already getting the puppet companies set up now. They have applied for tons of patents that could destroy Linux. We simply buy a perpetual license to all patents for a cool billion, and we're set.

    BillG: How can companies apply for patents that already exist in Linux? What about prior art?

    SBallmer: Don't worry, there's plenty of critical new or rewritten code since the patent applications that violates them. We've even guessed what Linux might add in the future, and patented that as well!

    BillG: But if those lawsuits fail.. then what?

    SBallmer: Well, we're working on getting the GPL ruled illegal. We're also going to deal a blow to all open source operating systems by our deals with bios manufacturers to only run operating systems who have paid their license to get the code signed. (Don't worry, they listen to our piles of money - if they obey us, they money keeps coming)

    BillG: So, you want the computer to be like an xbox, then? We might want to start drafting legislation for mod chips to prevent people from using linux.. er.. pirated copies of windows longhorn without the subscription/expiration feature. After all, we don't want people to use windows without paying their subscriptions...

    SBallmer: Already in the works. Prebought PCs will include a 3 year subscription to Longhorn Home/Crippled Edition. After this 3 years is up, the people buy a new computer rather than renewing their license (for an old computer, mind you) for another 3 years. The money from Intel and Dell is already pouring in. We can't allow mod chips because people would just use that to load the Corporate Edition.

  10. holy grail of file sharing by Mantorp · · Score: 3, Funny

    a while back there was a story up here about a gaim plugin as a p2p app, couple it with this and you can say "It wasn't me" that downloaded that Shaggy album.

  11. Muaha by Anonymous Coward · · Score: 1, Funny

    Kid: Hey, Mister Policeman! I just got an OTR message from Michael Jackson! He said he really did molest those kids, and he's really sorry about it. Of course, I can't prove he said it any more, but it authenticated as him originally! You believe me, right?
    Police: You bet we do! We haven't forgotten that guy used to be black!

    *sirens*

  12. Re:how about dual-plaintext messages? by corbettw · · Score: 3, Funny

    What you do is you have a huge stash of embarassing hardcore porn, say 'bukkake bloopers 2000'

    They see what you are 'hiding' and maybe laugh in your face

    There's a joke in there somewhere, I just know it...

    --
    God invented whiskey so the Irish would not rule the world.
  13. Killer! by go$$amer · · Score: 2, Funny

    Now I just need something interesting enough to talk about to merit the install :o

    --
    STOP. You're being farmed.
  14. Re:how about dual-plaintext messages? by foniksonik · · Score: 4, Funny

    It's true. 2000 was a horrible year for bukkake.... very embarassing... now 1999, that was vintage bukkake.. ;-p I've got some I'm saving for my wedding night.

    --
    A fool throws a stone into a well and a thousand sages can not remove it.
  15. Yeah, they'll want my messages... by filesiteguy · · Score: 2, Funny

    I can see how I'd want to encrypt my stuff. It might bore someone to death. Here's a real-life example of an IM from this morning. (I'm at work so I use Trillian on Windows NT5.1.)

    Me: Dude

    Friend: Yo

    Me: Whassup?

    Friend: Nothing

    Friend: You?

    Me: Nothing

    Friend: Dude

    Me: Yo

    Friend: How's work?

    Me: Work?

    Friend: You at home?

    Me: Oh.

    Me: No, work.

    Me: Fine

    Me: How's J? She still there?

    Friend: Fine. No left with C.

    Me: BRB

    Friend: Kewl

  16. Re:how about dual-plaintext messages? by Anonymous Coward · · Score: 1, Funny

    I guess you're saving it forever...

  17. Re:how about dual-plaintext messages? by Anonymous Coward · · Score: 1, Funny

    If you had DJB, he'd make you find 10 jokes in it.

  18. Re:No, that would be "implausible deniability" by shigelojoe · · Score: 2, Funny

    To which the jury's usual response is "Quilty!"

    No, that's the response when comfortable toilet paper is presented as evidence.

  19. Re:how about dual-plaintext messages? by joshuaobrien · · Score: 2, Funny

    They don't just laugh in your face...