Wallet Import and HD Keys Interaction

With Netezos.Keys you can create or import a Hierarchical Deterministic (HD) wallet.

Basic usage

In order to create an HD wallet, you just need to create a new instance of HDKey

var masterKey = new HDKey(ECKind.Ed25519); //Ed25519, Secp256k1, and NistP256 are available

To get a child key, for instance, with the path "m/44'/1729'/0'/0'" (it's a default path for Atomex, Temple, Kukai and other Tezos wallets), we need to Derive it from the master key

var childHdKey = masterKey.Derive("m/44'/1729'/0'/0'");

Also, if you need to get a lot of child keys, you can derive an intermediate HD key and then derive children from it, using a shorter derivation path, for slightly better performance:

var hdKey = masterKey.Derive("m/44'/1729'");

var firstChild = hdKey.Derive("/0'/0'"); // the result path is m/44'/1729'/0'/0'
// or
var secondChild = hdKey.Derive(1, true).Derive(0); // the result path is m/44'/1729'/1'/0
// etc.

Public Key Derivation

Public key derivation process is identical to the private key derivation, but keep in mind that it always fails for Ed25519 and for other curves it is only defined for non-hardened child keys. To create an HDPubKey object we need a public key and a chain code

var hdKey = new HDKey(ECKind.NistP256);
var hdPubKey = HDPubKey.FromPubKey(hdKey.PubKey, hdKey.ChainCode);
var childPubKey = hdPubKey.Derive("m/44/1729/0/0");
var anotherChild = childPubKey.Derive(0);