Why can an address be shared freely, while not even a single word of the private key should ever be disclosed?
Here’s how I understand it: you can derive an address from a private key, but you can’t derive the private key from the address alone, so sharing a receiving address with others isn’t dangerous.
Bitcoin and Ethereum private keys are both essentially large 256-bit random numbers, and both use the secp256k1 elliptic curve.
My habit now: I avoid exporting my private key whenever possible. If I really need to back it up, I don’t copy it into a note-taking app that’s connected to the internet.
Quick look: $BTC is quoted at 82785.06 (24h -0.037%).
Here’s how I understand it: you can derive an address from a private key, but you can’t derive the private key from the address alone, so sharing a receiving address with others isn’t dangerous.
Bitcoin and Ethereum private keys are both essentially large 256-bit random numbers, and both use the secp256k1 elliptic curve.
My habit now: I avoid exporting my private key whenever possible. If I really need to back it up, I don’t copy it into a note-taking app that’s connected to the internet.
Quick look: $BTC is quoted at 82785.06 (24h -0.037%).