BitcoinSign Transaction about secp256k1.swift

[csjones]

Hey @2jumper3 👋

I assume the answer is yes but I don't really have any context to what you're trying to accomplish exactly 😅 Do you have an example?

[2jumper3]

Hi @csjones !
I receive this bitcoin input in hex format: 6a2cb1dd2539e28e91c11eea007ed8aa1206b19aab2f3cf8ea00cc9ee9b35881. So I decode this hex accordingly. Next, I need to sign it and send it back. But I can't figure out how to sign it. Perhaps your library can? Accordingly, I can't provide the key to sign with because it's private.

[csjones]

If you just need to sign the hex input, you can do this:

let privateKey = try! secp256k1.Signing.PrivateKey()
let hexInput = try! "6a2cb1dd2539e28e91c11eea007ed8aa1206b19aab2f3cf8ea00cc9ee9b35881".bytes
let hexDigest = HashDigest(hexInput)

let signature = try! privateKey.signature(for: hexDigest)

I still don't know what the backend is expecting nor really what this hex represents but the code above is how to sign it.

[csjones]

Closing this issue. Feel free to open another issue if unresolved.