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Channel: How can you verify private key ownership using a public key and message signature? - Cryptography Stack Exchange
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Answer by epp for How can you verify private key ownership using a public key...

The answer without lengthy mathematical formulas to the essential part of your question which is about reverse engineering a private key from a public key is presented here:A private key cannot be...

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Answer by knaccc for How can you verify private key ownership using a public...

I'll explain how signatures involving elliptic curves work. Cryptocurrencies mostly use elliptic curves due to the smaller size of signatures that need to be published on the blockchain.When a private...

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Answer by fgrieu for How can you verify private key ownership using a public...

When I sign a message/transaction¹ with a private key,and I get a message/transaction¹ signature,Critically, it's used different public/private key pairs in these two things. Nothing in the rest of the...

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Answer by etudiant for How can you verify private key ownership using a...

Essentially, what is the difference between reverse engineering aprivate key from a public key, and verifying that someone must havethe private key to produce a message signature that corresponds to...

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How can you verify private key ownership using a public key and message...

When I sign a message with a private key, and I get a message signature, how is it that I'm able to - using the corresponding public key - verify that that message/transaction signature must have been...

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