Struct lightning_signer::signer::my_keys_manager::MyKeysManager

pub struct MyKeysManager { /* private fields */ }

An implementation of NodeSigner

Implementations

impl MyKeysManager

pub fn new( key_derivation_style: KeyDerivationStyle, seed: &[u8], network: Network, starting_time_factory: &dyn StartingTimeFactory ) -> MyKeysManager

Construct

NOTE - it’s ok to reconstruct MyKeysManager with a different starting time when restoring from persisted data. It is not important to persist the starting_time entropy …

pub fn get_onion_reply_secret(&self) -> [u8; 32]

onion reply secret

pub fn get_bolt12_pubkey(&self) -> PublicKey

BOLT 12 x-only pubkey

pub fn sign_bolt12( &self, messagename: &[u8], fieldname: &[u8], merkleroot: &[u8; 32], publictweak_opt: Option<&[u8]> ) -> Result<Signature, ()>

BOLT 12 sign

pub fn derive_secret(&self, info: &[u8]) -> SecretKey

Derive pseudorandom secret from a derived key

pub fn get_account_extended_key(&self) -> &ExtendedPrivKey

Get the layer-1 xpub

pub fn per_commitment_point<X: Signing>( secp_ctx: &Secp256k1<X>, commitment_secret: &[u8; 32] ) -> PublicKey

Convert a commitment secret to a commitment point

pub fn spend_spendable_outputs( &self, descriptors: &[&SpendableOutputDescriptor], outputs: Vec<TxOut>, change_destination_script: Script, feerate_sat_per_1000_weight: u32, secp_ctx: &Secp256k1<All> ) -> Result<Transaction, ()>

Creates a Transaction which spends the given descriptors to the given outputs, plus an output to the given change destination (if sufficient change value remains). The transaction will have a feerate, at least, of the given value.

Returns Err(()) if the output value is greater than the input value minus required fee or if a descriptor was duplicated.

We do not enforce that outputs meet the dust limit or that any output scripts are standard.

May panic if the SpendableOutputDescriptors were not generated by Channels which used this KeysManager or one of the InMemorySigner created by this KeysManager.

pub fn sign_heartbeat(&self, ser_heartbeat: &[u8]) -> Signature

Sign a heartbeat object

Trait Implementations

impl EntropySource for MyKeysManager

fn get_secure_random_bytes(&self) -> [u8; 32]

Gets a unique, cryptographically-secure, random 32-byte value. This method must return a different value each time it is called.

impl NodeSigner for MyKeysManager

fn get_node_id(&self, recipient: Recipient) -> Result<PublicKey, ()>

Get node id based on the provided Recipient.

fn sign_gossip_message( &self, msg: UnsignedGossipMessage<'_> ) -> Result<Signature, ()>

Sign a gossip message.

fn ecdh( &self, recipient: Recipient, other_key: &PublicKey, tweak: Option<&Scalar> ) -> Result<SharedSecret, ()>

Gets the ECDH shared secret of our node secret and other_key, multiplying by tweak if one is provided. Note that this tweak can be applied to other_key instead of our node secret, though this is less efficient.

fn sign_invoice( &self, hrp_bytes: &[u8], invoice_data: &[u5], recipient: Recipient ) -> Result<RecoverableSignature, ()>

Sign an invoice.

fn get_inbound_payment_key_material(&self) -> KeyMaterial

Get secret key material as bytes for use in encrypting and decrypting inbound payment data.

impl SignerProvider for MyKeysManager

type Signer = InMemorySigner

A type which implements WriteableEcdsaChannelSigner which will be returned by Self::derive_channel_signer.

fn get_destination_script(&self) -> Script

Get a script pubkey which we send funds to when claiming on-chain contestable outputs.

fn get_shutdown_scriptpubkey(&self) -> ShutdownScript

Get a script pubkey which we will send funds to when closing a channel.

fn generate_channel_keys_id( &self, _inbound: bool, _channel_value_satoshis: u64, _user_channel_id: u128 ) -> [u8; 32]

Generates a unique channel_keys_id that can be used to obtain a Self::Signer through SignerProvider::derive_channel_signer. The user_channel_id is provided to allow implementations of SignerProvider to maintain a mapping between itself and the generated channel_keys_id.

fn derive_channel_signer( &self, _channel_value_satoshis: u64, _channel_keys_id: [u8; 32] ) -> Self::Signer

Derives the private key material backing a Signer.

fn read_chan_signer(&self, _reader: &[u8]) -> Result<Self::Signer, DecodeError>

Reads a Signer for this SignerProvider from the given input stream. This is only called during deserialization of other objects which contain WriteableEcdsaChannelSigner-implementing objects (i.e., ChannelMonitors and ChannelManagers). The bytes are exactly those which <Self::Signer as Writeable>::write() writes, and contain no versioning scheme. You may wish to include your own version prefix and ensure you’ve read all of the provided bytes to ensure no corruption occurred.