/// <summary>
/// Rebase the keypaths.
/// If a PSBT updater only know the child HD public key but not the root one, another updater knowing the parent master key it is based on
/// can rebase the paths.
/// </summary>
/// <param name="accountKey">The current account key</param>
/// <param name="newRoot">The KeyPath with the fingerprint of the new root key</param>
/// <returns>This PSBT</returns>
public PSBT RebaseKeyPaths(IHDKey accountKey, RootedKeyPath newRoot)
{
if (accountKey == null)
{
throw new ArgumentNullException(nameof(accountKey));
}
if (newRoot == null)
{
throw new ArgumentNullException(nameof(newRoot));
}
accountKey = accountKey.AsHDKeyCache();
var accountKeyFP = accountKey.GetPublicKey().GetHDFingerPrint();
foreach (var o in HDKeysFor(accountKey).GroupBy(c => c.Coin))
{
foreach (var keyPath in o)
{
o.Key.HDKeyPaths.Remove(keyPath.PubKey);
o.Key.HDKeyPaths.Add(keyPath.PubKey, newRoot.Derive(keyPath.RootedKeyPath.KeyPath));
}
}
foreach (var xpub in GlobalXPubs.ToList())
{
if (xpub.Key.ExtPubKey.PubKey == accountKey.GetPublicKey())
{
GlobalXPubs.Remove(xpub.Key);
GlobalXPubs.Add(xpub.Key, newRoot.Derive(xpub.Value.KeyPath));
}
}
return(this);
}
