[C#] Check in initial auto-generated C# bindings
[ldk-java] / c_sharp / src / org / ldk / structs / BaseSign.cs
diff --git a/c_sharp/src/org/ldk/structs/BaseSign.cs b/c_sharp/src/org/ldk/structs/BaseSign.cs
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+using org.ldk.impl;
+using org.ldk.enums;
+using org.ldk.util;
+using System;
+
+namespace org { namespace ldk { namespace structs {
+
+/**
+ * A trait to sign Lightning channel transactions as described in
+ * [BOLT 3](https://github.com/lightning/bolts/blob/master/03-transactions.md).
+ * 
+ * Signing services could be implemented on a hardware wallet and should implement signing
+ * policies in order to be secure. Please refer to the [VLS Policy
+ * Controls](https://gitlab.com/lightning-signer/validating-lightning-signer/-/blob/main/docs/policy-controls.md)
+ * for an example of such policies.
+ */
+public class BaseSign : CommonBase {
+       internal readonly bindings.LDKBaseSign bindings_instance;
+       internal BaseSign(object _dummy, long ptr) : base(ptr) { bindings_instance = null; }
+       private BaseSign(bindings.LDKBaseSign arg, ChannelPublicKeys pubkeys) : base(bindings.LDKBaseSign_new(arg, pubkeys == null ? 0 : pubkeys.clone_ptr())) {
+               this.ptrs_to.AddLast(arg);
+               this.bindings_instance = arg;
+       }
+       ~BaseSign() {
+               if (ptr != 0) { bindings.BaseSign_free(ptr); }
+       }
+
+       public interface BaseSignInterface {
+               /**
+                * Gets the per-commitment point for a specific commitment number
+                * 
+                * Note that the commitment number starts at `(1 << 48) - 1` and counts backwards.
+                */
+               byte[] get_per_commitment_point(long _idx);
+               /**
+                * Gets the commitment secret for a specific commitment number as part of the revocation process
+                * 
+                * An external signer implementation should error here if the commitment was already signed
+                * and should refuse to sign it in the future.
+                * 
+                * May be called more than once for the same index.
+                * 
+                * Note that the commitment number starts at `(1 << 48) - 1` and counts backwards.
+                */
+               byte[] release_commitment_secret(long _idx);
+               /**
+                * Validate the counterparty's signatures on the holder commitment transaction and HTLCs.
+                * 
+                * This is required in order for the signer to make sure that releasing a commitment
+                * secret won't leave us without a broadcastable holder transaction.
+                * Policy checks should be implemented in this function, including checking the amount
+                * sent to us and checking the HTLCs.
+                * 
+                * The preimages of outgoing HTLCs that were fulfilled since the last commitment are provided.
+                * A validating signer should ensure that an HTLC output is removed only when the matching
+                * preimage is provided, or when the value to holder is restored.
+                * 
+                * Note that all the relevant preimages will be provided, but there may also be additional
+                * irrelevant or duplicate preimages.
+                */
+               Result_NoneNoneZ validate_holder_commitment(HolderCommitmentTransaction _holder_tx, byte[][] _preimages);
+               /**
+                * Returns an arbitrary identifier describing the set of keys which are provided back to you in
+                * some [`SpendableOutputDescriptor`] types. This should be sufficient to identify this
+                * [`BaseSign`] object uniquely and lookup or re-derive its keys.
+                */
+               byte[] channel_keys_id();
+               /**
+                * Create a signature for a counterparty's commitment transaction and associated HTLC transactions.
+                * 
+                * Note that if signing fails or is rejected, the channel will be force-closed.
+                * 
+                * Policy checks should be implemented in this function, including checking the amount
+                * sent to us and checking the HTLCs.
+                * 
+                * The preimages of outgoing HTLCs that were fulfilled since the last commitment are provided.
+                * A validating signer should ensure that an HTLC output is removed only when the matching
+                * preimage is provided, or when the value to holder is restored.
+                * 
+                * Note that all the relevant preimages will be provided, but there may also be additional
+                * irrelevant or duplicate preimages.
+                */
+               Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_counterparty_commitment(CommitmentTransaction _commitment_tx, byte[][] _preimages);
+               /**
+                * Validate the counterparty's revocation.
+                * 
+                * This is required in order for the signer to make sure that the state has moved
+                * forward and it is safe to sign the next counterparty commitment.
+                */
+               Result_NoneNoneZ validate_counterparty_revocation(long _idx, byte[] _secret);
+               /**
+                * Creates a signature for a holder's commitment transaction and its claiming HTLC transactions.
+                * 
+                * This will be called
+                * - with a non-revoked `commitment_tx`.
+                * - with the latest `commitment_tx` when we initiate a force-close.
+                * - with the previous `commitment_tx`, just to get claiming HTLC
+                * signatures, if we are reacting to a [`ChannelMonitor`]
+                * [replica](https://github.com/lightningdevkit/rust-lightning/blob/main/GLOSSARY.md#monitor-replicas)
+                * that decided to broadcast before it had been updated to the latest `commitment_tx`.
+                * 
+                * This may be called multiple times for the same transaction.
+                * 
+                * An external signer implementation should check that the commitment has not been revoked.
+                * 
+                * [`ChannelMonitor`]: crate::chain::channelmonitor::ChannelMonitor
+                */
+               Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_holder_commitment_and_htlcs(HolderCommitmentTransaction _commitment_tx);
+               /**
+                * Create a signature for the given input in a transaction spending an HTLC transaction output
+                * or a commitment transaction `to_local` output when our counterparty broadcasts an old state.
+                * 
+                * A justice transaction may claim multiple outputs at the same time if timelocks are
+                * similar, but only a signature for the input at index `input` should be signed for here.
+                * It may be called multiple times for same output(s) if a fee-bump is needed with regards
+                * to an upcoming timelock expiration.
+                * 
+                * Amount is value of the output spent by this input, committed to in the BIP 143 signature.
+                * 
+                * `per_commitment_key` is revocation secret which was provided by our counterparty when they
+                * revoked the state which they eventually broadcast. It's not a _holder_ secret key and does
+                * not allow the spending of any funds by itself (you need our holder `revocation_secret` to do
+                * so).
+                */
+               Result_SignatureNoneZ sign_justice_revoked_output(byte[] _justice_tx, long _input, long _amount, byte[] _per_commitment_key);
+               /**
+                * Create a signature for the given input in a transaction spending a commitment transaction
+                * HTLC output when our counterparty broadcasts an old state.
+                * 
+                * A justice transaction may claim multiple outputs at the same time if timelocks are
+                * similar, but only a signature for the input at index `input` should be signed for here.
+                * It may be called multiple times for same output(s) if a fee-bump is needed with regards
+                * to an upcoming timelock expiration.
+                * 
+                * `amount` is the value of the output spent by this input, committed to in the BIP 143
+                * signature.
+                * 
+                * `per_commitment_key` is revocation secret which was provided by our counterparty when they
+                * revoked the state which they eventually broadcast. It's not a _holder_ secret key and does
+                * not allow the spending of any funds by itself (you need our holder revocation_secret to do
+                * so).
+                * 
+                * `htlc` holds HTLC elements (hash, timelock), thus changing the format of the witness script
+                * (which is committed to in the BIP 143 signatures).
+                */
+               Result_SignatureNoneZ sign_justice_revoked_htlc(byte[] _justice_tx, long _input, long _amount, byte[] _per_commitment_key, HTLCOutputInCommitment _htlc);
+               /**
+                * Create a signature for a claiming transaction for a HTLC output on a counterparty's commitment
+                * transaction, either offered or received.
+                * 
+                * Such a transaction may claim multiples offered outputs at same time if we know the
+                * preimage for each when we create it, but only the input at index `input` should be
+                * signed for here. It may be called multiple times for same output(s) if a fee-bump is
+                * needed with regards to an upcoming timelock expiration.
+                * 
+                * `witness_script` is either an offered or received script as defined in BOLT3 for HTLC
+                * outputs.
+                * 
+                * `amount` is value of the output spent by this input, committed to in the BIP 143 signature.
+                * 
+                * `per_commitment_point` is the dynamic point corresponding to the channel state
+                * detected onchain. It has been generated by our counterparty and is used to derive
+                * channel state keys, which are then included in the witness script and committed to in the
+                * BIP 143 signature.
+                */
+               Result_SignatureNoneZ sign_counterparty_htlc_transaction(byte[] _htlc_tx, long _input, long _amount, byte[] _per_commitment_point, HTLCOutputInCommitment _htlc);
+               /**
+                * Create a signature for a (proposed) closing transaction.
+                * 
+                * Note that, due to rounding, there may be one \"missing\" satoshi, and either party may have
+                * chosen to forgo their output as dust.
+                */
+               Result_SignatureNoneZ sign_closing_transaction(ClosingTransaction _closing_tx);
+               /**
+                * Computes the signature for a commitment transaction's anchor output used as an
+                * input within `anchor_tx`, which spends the commitment transaction, at index `input`.
+                */
+               Result_SignatureNoneZ sign_holder_anchor_input(byte[] _anchor_tx, long _input);
+               /**
+                * Signs a channel announcement message with our funding key and our node secret key (aka
+                * node_id or network_key), proving it comes from one of the channel participants.
+                * 
+                * The first returned signature should be from our node secret key, the second from our
+                * funding key.
+                * 
+                * Note that if this fails or is rejected, the channel will not be publicly announced and
+                * our counterparty may (though likely will not) close the channel on us for violating the
+                * protocol.
+                */
+               Result_C2Tuple_SignatureSignatureZNoneZ sign_channel_announcement(UnsignedChannelAnnouncement _msg);
+               /**
+                * Set the counterparty static channel data, including basepoints,
+                * `counterparty_selected`/`holder_selected_contest_delay` and funding outpoint. Since these
+                * are static channel data, they MUST NOT be allowed to change to different values once set,
+                * as LDK may call this method more than once.
+                * 
+                * channel_parameters.is_populated() MUST be true.
+                */
+               void provide_channel_parameters(ChannelTransactionParameters _channel_parameters);
+       }
+       private class LDKBaseSignHolder { internal BaseSign held; }
+       private class LDKBaseSignImpl : bindings.LDKBaseSign {
+               internal LDKBaseSignImpl(BaseSignInterface arg, LDKBaseSignHolder impl_holder) { this.arg = arg; this.impl_holder = impl_holder; }
+               private BaseSignInterface arg;
+               private LDKBaseSignHolder impl_holder;
+               public byte[] get_per_commitment_point(long _idx) {
+                       byte[] ret = arg.get_per_commitment_point(_idx);
+                               GC.KeepAlive(arg);
+                       byte[] result = InternalUtils.check_arr_len(ret, 33);
+                       return result;
+               }
+               public byte[] release_commitment_secret(long _idx) {
+                       byte[] ret = arg.release_commitment_secret(_idx);
+                               GC.KeepAlive(arg);
+                       byte[] result = InternalUtils.check_arr_len(ret, 32);
+                       return result;
+               }
+               public long validate_holder_commitment(long _holder_tx, byte[][] _preimages) {
+                       org.ldk.structs.HolderCommitmentTransaction _holder_tx_hu_conv = null; if (_holder_tx < 0 || _holder_tx > 4096) { _holder_tx_hu_conv = new org.ldk.structs.HolderCommitmentTransaction(null, _holder_tx); }
+                       Result_NoneNoneZ ret = arg.validate_holder_commitment(_holder_tx_hu_conv, _preimages);
+                               GC.KeepAlive(arg);
+                       long result = ret == null ? 0 : ret.clone_ptr();
+                       return result;
+               }
+               public byte[] channel_keys_id() {
+                       byte[] ret = arg.channel_keys_id();
+                               GC.KeepAlive(arg);
+                       byte[] result = InternalUtils.check_arr_len(ret, 32);
+                       return result;
+               }
+               public long sign_counterparty_commitment(long _commitment_tx, byte[][] _preimages) {
+                       org.ldk.structs.CommitmentTransaction _commitment_tx_hu_conv = null; if (_commitment_tx < 0 || _commitment_tx > 4096) { _commitment_tx_hu_conv = new org.ldk.structs.CommitmentTransaction(null, _commitment_tx); }
+                       Result_C2Tuple_SignatureCVec_SignatureZZNoneZ ret = arg.sign_counterparty_commitment(_commitment_tx_hu_conv, _preimages);
+                               GC.KeepAlive(arg);
+                       long result = ret == null ? 0 : ret.clone_ptr();
+                       return result;
+               }
+               public long validate_counterparty_revocation(long _idx, byte[] _secret) {
+                       Result_NoneNoneZ ret = arg.validate_counterparty_revocation(_idx, _secret);
+                               GC.KeepAlive(arg);
+                       long result = ret == null ? 0 : ret.clone_ptr();
+                       return result;
+               }
+               public long sign_holder_commitment_and_htlcs(long _commitment_tx) {
+                       org.ldk.structs.HolderCommitmentTransaction _commitment_tx_hu_conv = null; if (_commitment_tx < 0 || _commitment_tx > 4096) { _commitment_tx_hu_conv = new org.ldk.structs.HolderCommitmentTransaction(null, _commitment_tx); }
+                       Result_C2Tuple_SignatureCVec_SignatureZZNoneZ ret = arg.sign_holder_commitment_and_htlcs(_commitment_tx_hu_conv);
+                               GC.KeepAlive(arg);
+                       long result = ret == null ? 0 : ret.clone_ptr();
+                       return result;
+               }
+               public long sign_justice_revoked_output(byte[] _justice_tx, long _input, long _amount, byte[] _per_commitment_key) {
+                       Result_SignatureNoneZ ret = arg.sign_justice_revoked_output(_justice_tx, _input, _amount, _per_commitment_key);
+                               GC.KeepAlive(arg);
+                       long result = ret == null ? 0 : ret.clone_ptr();
+                       return result;
+               }
+               public long sign_justice_revoked_htlc(byte[] _justice_tx, long _input, long _amount, byte[] _per_commitment_key, long _htlc) {
+                       org.ldk.structs.HTLCOutputInCommitment _htlc_hu_conv = null; if (_htlc < 0 || _htlc > 4096) { _htlc_hu_conv = new org.ldk.structs.HTLCOutputInCommitment(null, _htlc); }
+                       Result_SignatureNoneZ ret = arg.sign_justice_revoked_htlc(_justice_tx, _input, _amount, _per_commitment_key, _htlc_hu_conv);
+                               GC.KeepAlive(arg);
+                       long result = ret == null ? 0 : ret.clone_ptr();
+                       return result;
+               }
+               public long sign_counterparty_htlc_transaction(byte[] _htlc_tx, long _input, long _amount, byte[] _per_commitment_point, long _htlc) {
+                       org.ldk.structs.HTLCOutputInCommitment _htlc_hu_conv = null; if (_htlc < 0 || _htlc > 4096) { _htlc_hu_conv = new org.ldk.structs.HTLCOutputInCommitment(null, _htlc); }
+                       Result_SignatureNoneZ ret = arg.sign_counterparty_htlc_transaction(_htlc_tx, _input, _amount, _per_commitment_point, _htlc_hu_conv);
+                               GC.KeepAlive(arg);
+                       long result = ret == null ? 0 : ret.clone_ptr();
+                       return result;
+               }
+               public long sign_closing_transaction(long _closing_tx) {
+                       org.ldk.structs.ClosingTransaction _closing_tx_hu_conv = null; if (_closing_tx < 0 || _closing_tx > 4096) { _closing_tx_hu_conv = new org.ldk.structs.ClosingTransaction(null, _closing_tx); }
+                       Result_SignatureNoneZ ret = arg.sign_closing_transaction(_closing_tx_hu_conv);
+                               GC.KeepAlive(arg);
+                       long result = ret == null ? 0 : ret.clone_ptr();
+                       return result;
+               }
+               public long sign_holder_anchor_input(byte[] _anchor_tx, long _input) {
+                       Result_SignatureNoneZ ret = arg.sign_holder_anchor_input(_anchor_tx, _input);
+                               GC.KeepAlive(arg);
+                       long result = ret == null ? 0 : ret.clone_ptr();
+                       return result;
+               }
+               public long sign_channel_announcement(long _msg) {
+                       org.ldk.structs.UnsignedChannelAnnouncement _msg_hu_conv = null; if (_msg < 0 || _msg > 4096) { _msg_hu_conv = new org.ldk.structs.UnsignedChannelAnnouncement(null, _msg); }
+                       Result_C2Tuple_SignatureSignatureZNoneZ ret = arg.sign_channel_announcement(_msg_hu_conv);
+                               GC.KeepAlive(arg);
+                       long result = ret == null ? 0 : ret.clone_ptr();
+                       return result;
+               }
+               public void provide_channel_parameters(long _channel_parameters) {
+                       org.ldk.structs.ChannelTransactionParameters _channel_parameters_hu_conv = null; if (_channel_parameters < 0 || _channel_parameters > 4096) { _channel_parameters_hu_conv = new org.ldk.structs.ChannelTransactionParameters(null, _channel_parameters); }
+                       arg.provide_channel_parameters(_channel_parameters_hu_conv);
+                               GC.KeepAlive(arg);
+               }
+       }
+       public static BaseSign new_impl(BaseSignInterface arg, ChannelPublicKeys pubkeys) {
+               LDKBaseSignHolder impl_holder = new LDKBaseSignHolder();
+               impl_holder.held = new BaseSign(new LDKBaseSignImpl(arg, impl_holder), pubkeys);
+               return impl_holder.held;
+       }
+       /**
+        * Gets the per-commitment point for a specific commitment number
+        * 
+        * Note that the commitment number starts at `(1 << 48) - 1` and counts backwards.
+        */
+       public byte[] get_per_commitment_point(long idx) {
+               byte[] ret = bindings.BaseSign_get_per_commitment_point(this.ptr, idx);
+               GC.KeepAlive(this);
+               GC.KeepAlive(idx);
+               return ret;
+       }
+
+       /**
+        * Gets the commitment secret for a specific commitment number as part of the revocation process
+        * 
+        * An external signer implementation should error here if the commitment was already signed
+        * and should refuse to sign it in the future.
+        * 
+        * May be called more than once for the same index.
+        * 
+        * Note that the commitment number starts at `(1 << 48) - 1` and counts backwards.
+        */
+       public byte[] release_commitment_secret(long idx) {
+               byte[] ret = bindings.BaseSign_release_commitment_secret(this.ptr, idx);
+               GC.KeepAlive(this);
+               GC.KeepAlive(idx);
+               return ret;
+       }
+
+       /**
+        * Validate the counterparty's signatures on the holder commitment transaction and HTLCs.
+        * 
+        * This is required in order for the signer to make sure that releasing a commitment
+        * secret won't leave us without a broadcastable holder transaction.
+        * Policy checks should be implemented in this function, including checking the amount
+        * sent to us and checking the HTLCs.
+        * 
+        * The preimages of outgoing HTLCs that were fulfilled since the last commitment are provided.
+        * A validating signer should ensure that an HTLC output is removed only when the matching
+        * preimage is provided, or when the value to holder is restored.
+        * 
+        * Note that all the relevant preimages will be provided, but there may also be additional
+        * irrelevant or duplicate preimages.
+        */
+       public Result_NoneNoneZ validate_holder_commitment(org.ldk.structs.HolderCommitmentTransaction holder_tx, byte[][] preimages) {
+               long ret = bindings.BaseSign_validate_holder_commitment(this.ptr, holder_tx == null ? 0 : holder_tx.ptr, preimages != null ? InternalUtils.mapArray(preimages, preimages_conv_8 => InternalUtils.check_arr_len(preimages_conv_8, 32)) : null);
+               GC.KeepAlive(this);
+               GC.KeepAlive(holder_tx);
+               GC.KeepAlive(preimages);
+               if (ret >= 0 && ret <= 4096) { return null; }
+               Result_NoneNoneZ ret_hu_conv = Result_NoneNoneZ.constr_from_ptr(ret);
+               if (this != null) { this.ptrs_to.AddLast(holder_tx); };
+               return ret_hu_conv;
+       }
+
+       /**
+        * Returns an arbitrary identifier describing the set of keys which are provided back to you in
+        * some [`SpendableOutputDescriptor`] types. This should be sufficient to identify this
+        * [`BaseSign`] object uniquely and lookup or re-derive its keys.
+        */
+       public byte[] channel_keys_id() {
+               byte[] ret = bindings.BaseSign_channel_keys_id(this.ptr);
+               GC.KeepAlive(this);
+               return ret;
+       }
+
+       /**
+        * Create a signature for a counterparty's commitment transaction and associated HTLC transactions.
+        * 
+        * Note that if signing fails or is rejected, the channel will be force-closed.
+        * 
+        * Policy checks should be implemented in this function, including checking the amount
+        * sent to us and checking the HTLCs.
+        * 
+        * The preimages of outgoing HTLCs that were fulfilled since the last commitment are provided.
+        * A validating signer should ensure that an HTLC output is removed only when the matching
+        * preimage is provided, or when the value to holder is restored.
+        * 
+        * Note that all the relevant preimages will be provided, but there may also be additional
+        * irrelevant or duplicate preimages.
+        */
+       public Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_counterparty_commitment(org.ldk.structs.CommitmentTransaction commitment_tx, byte[][] preimages) {
+               long ret = bindings.BaseSign_sign_counterparty_commitment(this.ptr, commitment_tx == null ? 0 : commitment_tx.ptr, preimages != null ? InternalUtils.mapArray(preimages, preimages_conv_8 => InternalUtils.check_arr_len(preimages_conv_8, 32)) : null);
+               GC.KeepAlive(this);
+               GC.KeepAlive(commitment_tx);
+               GC.KeepAlive(preimages);
+               if (ret >= 0 && ret <= 4096) { return null; }
+               Result_C2Tuple_SignatureCVec_SignatureZZNoneZ ret_hu_conv = Result_C2Tuple_SignatureCVec_SignatureZZNoneZ.constr_from_ptr(ret);
+               if (this != null) { this.ptrs_to.AddLast(commitment_tx); };
+               return ret_hu_conv;
+       }
+
+       /**
+        * Validate the counterparty's revocation.
+        * 
+        * This is required in order for the signer to make sure that the state has moved
+        * forward and it is safe to sign the next counterparty commitment.
+        */
+       public Result_NoneNoneZ validate_counterparty_revocation(long idx, byte[] secret) {
+               long ret = bindings.BaseSign_validate_counterparty_revocation(this.ptr, idx, InternalUtils.check_arr_len(secret, 32));
+               GC.KeepAlive(this);
+               GC.KeepAlive(idx);
+               GC.KeepAlive(secret);
+               if (ret >= 0 && ret <= 4096) { return null; }
+               Result_NoneNoneZ ret_hu_conv = Result_NoneNoneZ.constr_from_ptr(ret);
+               return ret_hu_conv;
+       }
+
+       /**
+        * Creates a signature for a holder's commitment transaction and its claiming HTLC transactions.
+        * 
+        * This will be called
+        * - with a non-revoked `commitment_tx`.
+        * - with the latest `commitment_tx` when we initiate a force-close.
+        * - with the previous `commitment_tx`, just to get claiming HTLC
+        * signatures, if we are reacting to a [`ChannelMonitor`]
+        * [replica](https://github.com/lightningdevkit/rust-lightning/blob/main/GLOSSARY.md#monitor-replicas)
+        * that decided to broadcast before it had been updated to the latest `commitment_tx`.
+        * 
+        * This may be called multiple times for the same transaction.
+        * 
+        * An external signer implementation should check that the commitment has not been revoked.
+        * 
+        * [`ChannelMonitor`]: crate::chain::channelmonitor::ChannelMonitor
+        */
+       public Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_holder_commitment_and_htlcs(org.ldk.structs.HolderCommitmentTransaction commitment_tx) {
+               long ret = bindings.BaseSign_sign_holder_commitment_and_htlcs(this.ptr, commitment_tx == null ? 0 : commitment_tx.ptr);
+               GC.KeepAlive(this);
+               GC.KeepAlive(commitment_tx);
+               if (ret >= 0 && ret <= 4096) { return null; }
+               Result_C2Tuple_SignatureCVec_SignatureZZNoneZ ret_hu_conv = Result_C2Tuple_SignatureCVec_SignatureZZNoneZ.constr_from_ptr(ret);
+               if (this != null) { this.ptrs_to.AddLast(commitment_tx); };
+               return ret_hu_conv;
+       }
+
+       /**
+        * Create a signature for the given input in a transaction spending an HTLC transaction output
+        * or a commitment transaction `to_local` output when our counterparty broadcasts an old state.
+        * 
+        * A justice transaction may claim multiple outputs at the same time if timelocks are
+        * similar, but only a signature for the input at index `input` should be signed for here.
+        * It may be called multiple times for same output(s) if a fee-bump is needed with regards
+        * to an upcoming timelock expiration.
+        * 
+        * Amount is value of the output spent by this input, committed to in the BIP 143 signature.
+        * 
+        * `per_commitment_key` is revocation secret which was provided by our counterparty when they
+        * revoked the state which they eventually broadcast. It's not a _holder_ secret key and does
+        * not allow the spending of any funds by itself (you need our holder `revocation_secret` to do
+        * so).
+        */
+       public Result_SignatureNoneZ sign_justice_revoked_output(byte[] justice_tx, long input, long amount, byte[] per_commitment_key) {
+               long ret = bindings.BaseSign_sign_justice_revoked_output(this.ptr, justice_tx, input, amount, InternalUtils.check_arr_len(per_commitment_key, 32));
+               GC.KeepAlive(this);
+               GC.KeepAlive(justice_tx);
+               GC.KeepAlive(input);
+               GC.KeepAlive(amount);
+               GC.KeepAlive(per_commitment_key);
+               if (ret >= 0 && ret <= 4096) { return null; }
+               Result_SignatureNoneZ ret_hu_conv = Result_SignatureNoneZ.constr_from_ptr(ret);
+               return ret_hu_conv;
+       }
+
+       /**
+        * Create a signature for the given input in a transaction spending a commitment transaction
+        * HTLC output when our counterparty broadcasts an old state.
+        * 
+        * A justice transaction may claim multiple outputs at the same time if timelocks are
+        * similar, but only a signature for the input at index `input` should be signed for here.
+        * It may be called multiple times for same output(s) if a fee-bump is needed with regards
+        * to an upcoming timelock expiration.
+        * 
+        * `amount` is the value of the output spent by this input, committed to in the BIP 143
+        * signature.
+        * 
+        * `per_commitment_key` is revocation secret which was provided by our counterparty when they
+        * revoked the state which they eventually broadcast. It's not a _holder_ secret key and does
+        * not allow the spending of any funds by itself (you need our holder revocation_secret to do
+        * so).
+        * 
+        * `htlc` holds HTLC elements (hash, timelock), thus changing the format of the witness script
+        * (which is committed to in the BIP 143 signatures).
+        */
+       public Result_SignatureNoneZ sign_justice_revoked_htlc(byte[] justice_tx, long input, long amount, byte[] per_commitment_key, org.ldk.structs.HTLCOutputInCommitment htlc) {
+               long ret = bindings.BaseSign_sign_justice_revoked_htlc(this.ptr, justice_tx, input, amount, InternalUtils.check_arr_len(per_commitment_key, 32), htlc == null ? 0 : htlc.ptr);
+               GC.KeepAlive(this);
+               GC.KeepAlive(justice_tx);
+               GC.KeepAlive(input);
+               GC.KeepAlive(amount);
+               GC.KeepAlive(per_commitment_key);
+               GC.KeepAlive(htlc);
+               if (ret >= 0 && ret <= 4096) { return null; }
+               Result_SignatureNoneZ ret_hu_conv = Result_SignatureNoneZ.constr_from_ptr(ret);
+               if (this != null) { this.ptrs_to.AddLast(htlc); };
+               return ret_hu_conv;
+       }
+
+       /**
+        * Create a signature for a claiming transaction for a HTLC output on a counterparty's commitment
+        * transaction, either offered or received.
+        * 
+        * Such a transaction may claim multiples offered outputs at same time if we know the
+        * preimage for each when we create it, but only the input at index `input` should be
+        * signed for here. It may be called multiple times for same output(s) if a fee-bump is
+        * needed with regards to an upcoming timelock expiration.
+        * 
+        * `witness_script` is either an offered or received script as defined in BOLT3 for HTLC
+        * outputs.
+        * 
+        * `amount` is value of the output spent by this input, committed to in the BIP 143 signature.
+        * 
+        * `per_commitment_point` is the dynamic point corresponding to the channel state
+        * detected onchain. It has been generated by our counterparty and is used to derive
+        * channel state keys, which are then included in the witness script and committed to in the
+        * BIP 143 signature.
+        */
+       public Result_SignatureNoneZ sign_counterparty_htlc_transaction(byte[] htlc_tx, long input, long amount, byte[] per_commitment_point, org.ldk.structs.HTLCOutputInCommitment htlc) {
+               long ret = bindings.BaseSign_sign_counterparty_htlc_transaction(this.ptr, htlc_tx, input, amount, InternalUtils.check_arr_len(per_commitment_point, 33), htlc == null ? 0 : htlc.ptr);
+               GC.KeepAlive(this);
+               GC.KeepAlive(htlc_tx);
+               GC.KeepAlive(input);
+               GC.KeepAlive(amount);
+               GC.KeepAlive(per_commitment_point);
+               GC.KeepAlive(htlc);
+               if (ret >= 0 && ret <= 4096) { return null; }
+               Result_SignatureNoneZ ret_hu_conv = Result_SignatureNoneZ.constr_from_ptr(ret);
+               if (this != null) { this.ptrs_to.AddLast(htlc); };
+               return ret_hu_conv;
+       }
+
+       /**
+        * Create a signature for a (proposed) closing transaction.
+        * 
+        * Note that, due to rounding, there may be one \"missing\" satoshi, and either party may have
+        * chosen to forgo their output as dust.
+        */
+       public Result_SignatureNoneZ sign_closing_transaction(org.ldk.structs.ClosingTransaction closing_tx) {
+               long ret = bindings.BaseSign_sign_closing_transaction(this.ptr, closing_tx == null ? 0 : closing_tx.ptr);
+               GC.KeepAlive(this);
+               GC.KeepAlive(closing_tx);
+               if (ret >= 0 && ret <= 4096) { return null; }
+               Result_SignatureNoneZ ret_hu_conv = Result_SignatureNoneZ.constr_from_ptr(ret);
+               if (this != null) { this.ptrs_to.AddLast(closing_tx); };
+               return ret_hu_conv;
+       }
+
+       /**
+        * Computes the signature for a commitment transaction's anchor output used as an
+        * input within `anchor_tx`, which spends the commitment transaction, at index `input`.
+        */
+       public Result_SignatureNoneZ sign_holder_anchor_input(byte[] anchor_tx, long input) {
+               long ret = bindings.BaseSign_sign_holder_anchor_input(this.ptr, anchor_tx, input);
+               GC.KeepAlive(this);
+               GC.KeepAlive(anchor_tx);
+               GC.KeepAlive(input);
+               if (ret >= 0 && ret <= 4096) { return null; }
+               Result_SignatureNoneZ ret_hu_conv = Result_SignatureNoneZ.constr_from_ptr(ret);
+               return ret_hu_conv;
+       }
+
+       /**
+        * Signs a channel announcement message with our funding key and our node secret key (aka
+        * node_id or network_key), proving it comes from one of the channel participants.
+        * 
+        * The first returned signature should be from our node secret key, the second from our
+        * funding key.
+        * 
+        * Note that if this fails or is rejected, the channel will not be publicly announced and
+        * our counterparty may (though likely will not) close the channel on us for violating the
+        * protocol.
+        */
+       public Result_C2Tuple_SignatureSignatureZNoneZ sign_channel_announcement(org.ldk.structs.UnsignedChannelAnnouncement msg) {
+               long ret = bindings.BaseSign_sign_channel_announcement(this.ptr, msg == null ? 0 : msg.ptr);
+               GC.KeepAlive(this);
+               GC.KeepAlive(msg);
+               if (ret >= 0 && ret <= 4096) { return null; }
+               Result_C2Tuple_SignatureSignatureZNoneZ ret_hu_conv = Result_C2Tuple_SignatureSignatureZNoneZ.constr_from_ptr(ret);
+               if (this != null) { this.ptrs_to.AddLast(msg); };
+               return ret_hu_conv;
+       }
+
+       /**
+        * Set the counterparty static channel data, including basepoints,
+        * `counterparty_selected`/`holder_selected_contest_delay` and funding outpoint. Since these
+        * are static channel data, they MUST NOT be allowed to change to different values once set,
+        * as LDK may call this method more than once.
+        * 
+        * channel_parameters.is_populated() MUST be true.
+        */
+       public void provide_channel_parameters(org.ldk.structs.ChannelTransactionParameters channel_parameters) {
+               bindings.BaseSign_provide_channel_parameters(this.ptr, channel_parameters == null ? 0 : channel_parameters.ptr);
+               GC.KeepAlive(this);
+               GC.KeepAlive(channel_parameters);
+               if (this != null) { this.ptrs_to.AddLast(channel_parameters); };
+       }
+
+       /**
+        * Frees any resources associated with this object given its this_arg pointer.
+        * Does not need to free the outer struct containing function pointers and may be NULL is no resources need to be freed.
+        */
+       public ChannelPublicKeys get_pubkeys() {
+               long ret = bindings.BaseSign_get_pubkeys(this.ptr);
+               GC.KeepAlive(this);
+               if (ret >= 0 && ret <= 4096) { return null; }
+               org.ldk.structs.ChannelPublicKeys ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.ChannelPublicKeys(null, ret); }
+               if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(this); };
+               return ret_hu_conv;
+       }
+
+}
+} } }