Lisk path about slips HOT 3 CLOSED

Have you written docs on your ethereum implementation? I am implementing it now for KK and had to make some assumptions since ethereum doesn't fit neatly into bip44. When you say 'full hd style' what do you mean?

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@prusnak thanks :)

@bgok I used only the receive addresses (index zero) to generate ethereum addresses. Given that ethereum is not a utxo based crypto, I simply sort accounts by highest balance and send out like that, combining the sends if I need to.

For lisk, I'm only going to use index 0, 0 (first child node/address from the receive node as the base) so there will only be one address shown (doesn't change on account having received any balance) with a qr code and such. so I'm going to use some bytes from that node, using it as a source of entropy to generate the lisk address (something sane like the first n bytes from that node). That part is still a WIP. ethereum was "easy".

ours uses bitcoinlib-js, which has been super stable (we tried using lightwallet back in april but that caused major issues with certain versions of android webviews). The derivation code looks like so:

HDWalletPouchEthereum.getCoinAddress = function(node) {
// console.log("[ethereum] node :: " + node);
var ethKeyPair = node.keyPair;
// console.log("[ethereum] keyPair :: " + ethKeyPair.d + " :: " + ethKeyPair.__Q);

var prevCompressed = ethKeyPair.compressed;
ethKeyPair.compressed = false;

var ethKeyPairPublicKey = ethKeyPair.getPublicKeyBuffer();

var pubKeyHexEth = ethKeyPairPublicKey.toString('hex').slice(2);

var pubKeyWordArrayEth = thirdparty.CryptoJS.enc.Hex.parse(pubKeyHexEth);

var hashEth = thirdparty.CryptoJS.SHA3(pubKeyWordArrayEth, { outputLength: 256 });

var addressEth = hashEth.toString(thirdparty.CryptoJS.enc.Hex).slice(24);

ethKeyPair.compressed = prevCompressed;

//        console.log("[ethereum] address :: " + addressEth);
return "0x" + addressEth;

}

using the bitcoinlib-js node structures. You can see this on jaxx.io with our backend code, it's the hdwallet_pouch_impl_ethereum.js one.

https://jaxx.io/sourceCode/

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