Is it possible to derive a private key from a public key safely if you salt it with a cryptographically random, secret salt which would form part of the private key? If it is, then you can have human-meaningful, secure, decentralised, globally unique identifiers without the need for a blockchain.
If I understand what you're trying to say, who's to stop people from forging private keys with other random salts, that all correspond to the same public key? Which one would be considered "the real one" in that case?
>>fg-HQ0EFRB6 (OP) Interesting, but how would this be decentralized? How would you share these keys without having a central point of authority knowing about these keys? And if you had multiple 'decentralised' nodes, how would you trust that a node isnt misbehaving?
>>fg-A1969188 Good point. I didn't think of that.
>>ftech-6YKWQWV9 The same way every other decentralised system works? I don't understand the question.
Another retarded idea (I realized why it was retarded soon after thinking of it and trying to put it into words): If it takes provable work to mint a Chaumian eCash token, it could be made decentralised. Minting a coin would be like mining Bitcoin. There would have to be some way of finding the original minter of a random coin and of bypassing the proof of work when clearing a coin and getting a new one. But there would be nothing stopping double-spends by the minter. Which is a shame.
>>fg-N4ZX3JMO There is something called GNU Taler that is supposed to let banks issue tokens without proof of work (Instead it has a cryptographic signature verifying that it came from the bank). It is an online payment system rather than a currency. You would get a token from the bank, and then you could spend the token anywhere once, and then the person who you sent the token can only cash it in with the bank (It cannot send it to somebody else). Your post sounded somewhat like that.
>>fg-RA4C02YX The bank would say that the token is worth an amount of another currency. So it could say "This token is worth 5 dollars" (I think the tokens might be more fungible than that,like you could spend half a token idk though) and then you could spend that token to a merchant, and the merchant would then ask the bank for 5 dollars.
>>fg-RA4C02YX I think that's an ecash system but I'm not sure. It does use blind signatures.
test
>>fg-J7W6N5NS Did it work?
>>fg-8R13MVM6 Yes?
Obviously not.
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