Topic: How to authenticate with challange and private keys? [Java] (Read 1411 times)
key.sign returns an object with the r/s components in it. You can send them back to the server.
I'd like to translate the following JS code into Java code:
The challenge_key is the desired output and must be send back to the server.
I'm want to use bitcoinj for this. Maybe anyone has already worked with it and can help how the calls in java have to be constructed? I came up with the following, but don't know how to continue:
If what I did is correct: how do I get the challange_key that has to be send back to the server out of the ECkey that I signed?
Code:
var key = new Bitcoin.ECKey(Crypto.util.hexToBytes(SHA256(password))); //password = private user password
var signed_challenge = Crypto.util.bytesToHex(key.sign(Crypto.util.hexToBytes(SHA256(challenge_key)))); //challenge_key = generated key from server
I'm want to use bitcoinj for this. Maybe anyone has already worked with it and can help how the calls in java have to be constructed? I came up with the following, but don't know how to continue:
Code:
String password; //the private user pw
String challenge; //a string from the server
BigInteger privkey = new BigInteger(Hex.decode(Sha256Hash.create(password.getBytes()).toString()));
ECKey key = new ECKey(privkey);
key.sign(new Sha256Hash(challenge));
If what I did is correct: how do I get the challange_key that has to be send back to the server out of the ECkey that I signed?
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