// newManagedAddressFromExtKey returns a new managed address based on the passed
// account and extended key. The managed address will have access to the
// private and public keys if the provided extended key is private, otherwise it
// will only have access to the public key.
func newManagedAddressFromExtKey(m *Manager, account uint32, key *hdkeychain.ExtendedKey) (*managedAddress, error) {
// Create a new managed address based on the public or private key
// depending on whether the generated key is private.
var managedAddr *managedAddress
if key.IsPrivate() {
privKey, err := key.ECPrivKey()
if err != nil {
return nil, err
}
// Ensure the temp private key big integer is cleared after use.
managedAddr, err = newManagedAddress(m, account, privKey, true)
zero.BigInt(privKey.D)
if err != nil {
return nil, err
}
} else {
pubKey, err := key.ECPubKey()
if err != nil {
return nil, err
}
managedAddr, err = newManagedAddressWithoutPrivKey(m, account,
pubKey, true)
if err != nil {
return nil, err
}
}
return managedAddr, nil
}
