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+ - Ask Slashdot: Post-Quantum Asymmetric Key Exchange-> 3

Submitted by
LeDopore
LeDopore writes "Quantum computers might be coming. I'd estimate that there's a 10% chance RSA will be useless within 20 years. Whatever the odds, some of the data we send over ssh and ssl today should remain private for a century, and we simply can't guarantee secrecy anymore using the algorithms with which we have become complacent. Are there any alternatives to RSA and ECC that are trustworthy and properly implemented? Why is everyone still happy with SSH and RSA with the specter of a quantum menace lurking just around the corner?"
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  • I can condense each sentence in that paragraph to a single phrase:

    Unsupported guess. Non sequitur. Loaded question. FUD.

    • Dude, there *is* uncertainty and doubt about where technology will take us 100 years from now. We *are* sending some data over SSH that should be kept secret for a century. Unless we're sure that nobody will develop a big quantum computer this century (which is a hard stance to maintain - 100 years is a long time) we *should* be afraid.

      Cue Strider: "Not nearly afraid enough. I know what hunts you."

  • I'd estimate there's approximately a 100% chance that quantum computers are already here and have been in production for some years. RSA and related ciphers are already cracked wide open. The participants in the UKUSA agreement made the first operational QC, but China and Russia are now in the game, too. I guess their use is camouflaged by banks of 'routine' supercomputers. I expect that intel gathered this way is treated the same way as intel gathered during WW2 via Ultra, which is how they've kept i

Since we're all here, we must not be all there. -- Bob "Mountain" Beck

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