+
+
+/** An implementation of SignerProvider */
+public interface SignerProviderInterface {
+ /**Generates a unique `channel_keys_id` that can be used to obtain a [`Self::EcdsaSigner`] 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`.
+ *
+ * This method must return a different value each time it is called.
+ */
+ byte[] generate_channel_keys_id(bool inbound, long channel_value_satoshis, UInt128 user_channel_id);
+ /**Derives the private key material backing a `Signer`.
+ *
+ * To derive a new `Signer`, a fresh `channel_keys_id` should be obtained through
+ * [`SignerProvider::generate_channel_keys_id`]. Otherwise, an existing `Signer` can be
+ * re-derived from its `channel_keys_id`, which can be obtained through its trait method
+ * [`ChannelSigner::channel_keys_id`].
+ */
+ WriteableEcdsaChannelSigner derive_channel_signer(long channel_value_satoshis, byte[] channel_keys_id);
+ /**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., [`ChannelMonitor`]s and [`ChannelManager`]s).
+ * 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.
+ *
+ * This method is slowly being phased out -- it will only be called when reading objects
+ * written by LDK versions prior to 0.0.113.
+ *
+ * [`Signer`]: Self::EcdsaSigner
+ * [`ChannelMonitor`]: crate::chain::channelmonitor::ChannelMonitor
+ * [`ChannelManager`]: crate::ln::channelmanager::ChannelManager
+ */
+ Result_WriteableEcdsaChannelSignerDecodeErrorZ read_chan_signer(byte[] reader);
+ /**Get a script pubkey which we send funds to when claiming on-chain contestable outputs.
+ *
+ * If this function returns an error, this will result in a channel failing to open.
+ *
+ * This method should return a different value each time it is called, to avoid linking
+ * on-chain funds across channels as controlled to the same user. `channel_keys_id` may be
+ * used to derive a unique value for each channel.
+ */
+ Result_CVec_u8ZNoneZ get_destination_script(byte[] channel_keys_id);
+ /**Get a script pubkey which we will send funds to when closing a channel.
+ *
+ * If this function returns an error, this will result in a channel failing to open or close.
+ * In the event of a failure when the counterparty is initiating a close, this can result in a
+ * channel force close.
+ *
+ * This method should return a different value each time it is called, to avoid linking
+ * on-chain funds across channels as controlled to the same user.
+ */
+ Result_ShutdownScriptNoneZ get_shutdown_scriptpubkey();
+}
+