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I'm not proposing that you buy my system - I'm asking what's wrong with my design for the core mechanic. And you've genuinely offered no substantive critiques.
by VikingCoder 15y ago
I'm not proposing that you buy my system - I'm asking what's wrong with my design for the core mechanic.
And you've genuinely offered no substantive critiques. Sounds like the core mechanic is gold, then.
If there's nothing wrong with the core mechanic, I should be able to buy a commercial system built on it, and know that it has all of the inherent strengths and weaknesses of my core mechanic. And possibly more weaknesses, inherent in the implementation of any security system.
- tptacek 15y agoThank you. It's people like you who are steadily paying for my kids' college education. :) I don't blame you for being frustrated with my responses, but it's my experience that detailed critiques of random crypto schemes on message boards are counterproductive; the designer just "yes, but"'s the critique until all the low-hanging fruit is picked (each of which was a devastating flaw in their original scheme), and the conversation ends with a no- less- fatally- flawed system and a designer who is perversely more confident.
- VikingCoder 15y agoPeople are using Quantum Entanglement to exchange keys. I'm proposing a hard drive and a plane ticket. Your critique is based upon ego alone.
- mindslight 15y agoFor one, you don't have a MAC. This means an attacker can flip arbitrary bits in your message. There's a huge difference between crypto primitives and a crypto system. (It seems like it should be possible to devise a non-algorithmic MAC using a second pad. But now we're back in theory-land.)
- tptacek 15y ago(It might be possible to devise a non-algorithmic MAC using a second pad, hmm.) AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA!
- mindslight 15y agoCollege prices are always rising.
- tptacek 15y agoMy scheme only works if I don't die of an aneurysm first.