101–110 of 171 posts
...... share a hash?
That can reveal the secret. If I know one value out of a known set of values then by sharing a hash anybody can hash the known values until they arrive at my hash, revealing my "secret."
Yes, it works, but it doesn't because we'll all be dead when your computer has the answer.
> How to prove you know a secret without giving it away This is the best use case for blockchain. Put the secret on the blockchain and show others that transaction. Since it's on blockchain, no one can deny your claim about knowing the secret. This is why blockchain was invented. Before blockchain, I was miserable. There was no way for me to prove to my girlfriends that I knew a secret, without telling the secret. No…
This tweet illustrates the idea of showing that you know where is Waldo without revealing Waldo's position: https://twitter.com/cronokirby/status/1571824060513796099
This tweet illustrates the idea of showing that you know where is Waldo without revealing Waldo's position: https://twitter.com/cronokirby/status/1571824060513796099
That's just giving Waldo's coordinates with extra steps
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It's pretty bad on the concepts, too. There are good books on the concepts that won't blow your head off; two of them are JP Aumasson's "Serious Cryptography" and David Wong's "Real World Cryptography".
Can you give an example of such a bad concept explained in Applied Cryptography vs Serious Cryptography? Because, out of curiosity, I just downloaded both books, skimmed on both of them (having read in the past Applied Cryptography it took me less time for it of course) through first chapters (classic crypto, randomness and RSA chapters) and found that they are very similar. So, again, do you have a proof of your sta…
Earlier quoted context omitted.
That's just giving Waldo's coordinates with extra steps
How so? You don't reveal any coordinates if the foil covering the page is 3x the size of the page.
If there's infinite possible alignments then you've given no data, but a piece of foil with a random hole in it. Like giving you two random numbers and you coming up with a function that maps them to waldo's position.
This tweet illustrates the idea of showing that you know where is Waldo without revealing Waldo's position: https://twitter.com/cronokirby/status/1571824060513796099
That's just giving Waldo's coordinates with extra steps
People use the similar concept in geocaching when they forget to bring a pen... take a photo of a geocache against a neutral background (asphalt, grass,...) thus proving they found it, but not revealing/spoiling the location to other geocachers.