_ Git - ldk-java/blob - c_sharp/src/org/ldk/structs/KeysManager.cs

   1 using org.ldk.impl;
   2 using org.ldk.enums;
   3 using org.ldk.util;
   4 using System;
   5
   6 namespace org { namespace ldk { namespace structs {
   7
   8
   9 /**
  10  * Simple implementation of [`EntropySource`], [`NodeSigner`], and [`SignerProvider`] that takes a
  11  * 32-byte seed for use as a BIP 32 extended key and derives keys from that.
  12  *
  13  * Your `node_id` is seed/0'.
  14  * Unilateral closes may use seed/1'.
  15  * Cooperative closes may use seed/2'.
  16  * The two close keys may be needed to claim on-chain funds!
  17  *
  18  * This struct cannot be used for nodes that wish to support receiving phantom payments;
  19  * [`PhantomKeysManager`] must be used instead.
  20  *
  21  * Note that switching between this struct and [`PhantomKeysManager`] will invalidate any
  22  * previously issued invoices and attempts to pay previous invoices will fail.
  23  */
  24 public class KeysManager : CommonBase {
  25         internal KeysManager(object _dummy, long ptr) : base(ptr) { }
  26         ~KeysManager() {
  27                 if (ptr != 0) { bindings.KeysManager_free(ptr); }
  28         }
  29
  30         /**
  31          * Constructs a [`KeysManager`] from a 32-byte seed. If the seed is in some way biased (e.g.,
  32          * your CSRNG is busted) this may panic (but more importantly, you will possibly lose funds).
  33          * `starting_time` isn't strictly required to actually be a time, but it must absolutely,
  34          * without a doubt, be unique to this instance. ie if you start multiple times with the same
  35          * `seed`, `starting_time` must be unique to each run. Thus, the easiest way to achieve this
  36          * is to simply use the current time (with very high precision).
  37          *
  38          * The `seed` MUST be backed up safely prior to use so that the keys can be re-created, however,
  39          * obviously, `starting_time` should be unique every time you reload the library - it is only
  40          * used to generate new ephemeral key data (which will be stored by the individual channel if
  41          * necessary).
  42          *
  43          * Note that the seed is required to recover certain on-chain funds independent of
  44          * [`ChannelMonitor`] data, though a current copy of [`ChannelMonitor`] data is also required
  45          * for any channel, and some on-chain during-closing funds.
  46          *
  47          * [`ChannelMonitor`]: crate::chain::channelmonitor::ChannelMonitor
  48          */
  49         public static KeysManager of(byte[] seed, long starting_time_secs, int starting_time_nanos) {
  50                 long ret = bindings.KeysManager_new(InternalUtils.encodeUint8Array(InternalUtils.check_arr_len(seed, 32)), starting_time_secs, starting_time_nanos);
  51                 GC.KeepAlive(seed);
  52                 GC.KeepAlive(starting_time_secs);
  53                 GC.KeepAlive(starting_time_nanos);
  54                 if (ret >= 0 && ret <= 4096) { return null; }
  55                 org.ldk.structs.KeysManager ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.KeysManager(null, ret); }
  56                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(ret_hu_conv); };
  57                 return ret_hu_conv;
  58         }
  59
  60         /**
  61          * Gets the \"node_id\" secret key used to sign gossip announcements, decode onion data, etc.
  62          */
  63         public byte[] get_node_secret_key() {
  64                 long ret = bindings.KeysManager_get_node_secret_key(this.ptr);
  65                 GC.KeepAlive(this);
  66                 if (ret >= 0 && ret <= 4096) { return null; }
  67                 byte[] ret_conv = InternalUtils.decodeUint8Array(ret);
  68                 return ret_conv;
  69         }
  70
  71         /**
  72          * Derive an old [`WriteableEcdsaChannelSigner`] containing per-channel secrets based on a key derivation parameters.
  73          */
  74         public InMemorySigner derive_channel_keys(long channel_value_satoshis, byte[] _params) {
  75                 long ret = bindings.KeysManager_derive_channel_keys(this.ptr, channel_value_satoshis, InternalUtils.encodeUint8Array(InternalUtils.check_arr_len(_params, 32)));
  76                 GC.KeepAlive(this);
  77                 GC.KeepAlive(channel_value_satoshis);
  78                 GC.KeepAlive(_params);
  79                 if (ret >= 0 && ret <= 4096) { return null; }
  80                 org.ldk.structs.InMemorySigner ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.InMemorySigner(null, ret); }
  81                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(this); };
  82                 return ret_hu_conv;
  83         }
  84
  85         /**
  86          * Signs the given [`PartiallySignedTransaction`] which spends the given [`SpendableOutputDescriptor`]s.
  87          * The resulting inputs will be finalized and the PSBT will be ready for broadcast if there
  88          * are no other inputs that need signing.
  89          *
  90          * Returns `Err(())` if the PSBT is missing a descriptor or if we fail to sign.
  91          *
  92          * May panic if the [`SpendableOutputDescriptor`]s were not generated by channels which used
  93          * this [`KeysManager`] or one of the [`InMemorySigner`] created by this [`KeysManager`].
  94          */
  95         public Result_CVec_u8ZNoneZ sign_spendable_outputs_psbt(SpendableOutputDescriptor[] descriptors, byte[] psbt) {
  96                 long ret = bindings.KeysManager_sign_spendable_outputs_psbt(this.ptr, InternalUtils.encodeUint64Array(InternalUtils.mapArray(descriptors, descriptors_conv_27 => descriptors_conv_27.ptr)), InternalUtils.encodeUint8Array(psbt));
  97                 GC.KeepAlive(this);
  98                 GC.KeepAlive(descriptors);
  99                 GC.KeepAlive(psbt);
 100                 if (ret >= 0 && ret <= 4096) { return null; }
 101                 Result_CVec_u8ZNoneZ ret_hu_conv = Result_CVec_u8ZNoneZ.constr_from_ptr(ret);
 102                 foreach (SpendableOutputDescriptor descriptors_conv_27 in descriptors) { if (this != null) { this.ptrs_to.AddLast(descriptors_conv_27); }; };
 103                 return ret_hu_conv;
 104         }
 105
 106         /**
 107          * Creates a [`Transaction`] which spends the given descriptors to the given outputs, plus an
 108          * output to the given change destination (if sufficient change value remains). The
 109          * transaction will have a feerate, at least, of the given value.
 110          *
 111          * The `locktime` argument is used to set the transaction's locktime. If `None`, the
 112          * transaction will have a locktime of 0. It it recommended to set this to the current block
 113          * height to avoid fee sniping, unless you have some specific reason to use a different
 114          * locktime.
 115          *
 116          * Returns `Err(())` if the output value is greater than the input value minus required fee,
 117          * if a descriptor was duplicated, or if an output descriptor `script_pubkey`
 118          * does not match the one we can spend.
 119          *
 120          * We do not enforce that outputs meet the dust limit or that any output scripts are standard.
 121          *
 122          * May panic if the [`SpendableOutputDescriptor`]s were not generated by channels which used
 123          * this [`KeysManager`] or one of the [`InMemorySigner`] created by this [`KeysManager`].
 124          */
 125         public Result_TransactionNoneZ spend_spendable_outputs(SpendableOutputDescriptor[] descriptors, TxOut[] outputs, byte[] change_destination_script, int feerate_sat_per_1000_weight, org.ldk.structs.Option_u32Z locktime) {
 126                 long ret = bindings.KeysManager_spend_spendable_outputs(this.ptr, InternalUtils.encodeUint64Array(InternalUtils.mapArray(descriptors, descriptors_conv_27 => descriptors_conv_27.ptr)), InternalUtils.encodeUint64Array(InternalUtils.mapArray(outputs, outputs_conv_7 => outputs_conv_7.ptr)), InternalUtils.encodeUint8Array(change_destination_script), feerate_sat_per_1000_weight, locktime.ptr);
 127                 GC.KeepAlive(this);
 128                 GC.KeepAlive(descriptors);
 129                 GC.KeepAlive(outputs);
 130                 GC.KeepAlive(change_destination_script);
 131                 GC.KeepAlive(feerate_sat_per_1000_weight);
 132                 GC.KeepAlive(locktime);
 133                 if (ret >= 0 && ret <= 4096) { return null; }
 134                 Result_TransactionNoneZ ret_hu_conv = Result_TransactionNoneZ.constr_from_ptr(ret);
 135                 foreach (SpendableOutputDescriptor descriptors_conv_27 in descriptors) { if (this != null) { this.ptrs_to.AddLast(descriptors_conv_27); }; };
 136                 if (this != null) { this.ptrs_to.AddLast(locktime); };
 137                 return ret_hu_conv;
 138         }
 139
 140         /**
 141          * Constructs a new EntropySource which calls the relevant methods on this_arg.
 142          * This copies the `inner` pointer in this_arg and thus the returned EntropySource must be freed before this_arg is
 143          */
 144         public EntropySource as_EntropySource() {
 145                 long ret = bindings.KeysManager_as_EntropySource(this.ptr);
 146                 GC.KeepAlive(this);
 147                 if (ret >= 0 && ret <= 4096) { return null; }
 148                 EntropySource ret_hu_conv = new EntropySource(null, ret);
 149                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(this); };
 150                 return ret_hu_conv;
 151         }
 152
 153         /**
 154          * Constructs a new NodeSigner which calls the relevant methods on this_arg.
 155          * This copies the `inner` pointer in this_arg and thus the returned NodeSigner must be freed before this_arg is
 156          */
 157         public NodeSigner as_NodeSigner() {
 158                 long ret = bindings.KeysManager_as_NodeSigner(this.ptr);
 159                 GC.KeepAlive(this);
 160                 if (ret >= 0 && ret <= 4096) { return null; }
 161                 NodeSigner ret_hu_conv = new NodeSigner(null, ret);
 162                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(this); };
 163                 return ret_hu_conv;
 164         }
 165
 166         /**
 167          * Constructs a new SignerProvider which calls the relevant methods on this_arg.
 168          * This copies the `inner` pointer in this_arg and thus the returned SignerProvider must be freed before this_arg is
 169          */
 170         public SignerProvider as_SignerProvider() {
 171                 long ret = bindings.KeysManager_as_SignerProvider(this.ptr);
 172                 GC.KeepAlive(this);
 173                 if (ret >= 0 && ret <= 4096) { return null; }
 174                 SignerProvider ret_hu_conv = new SignerProvider(null, ret);
 175                 if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.AddLast(this); };
 176                 return ret_hu_conv;
 177         }
 178
 179 }
 180 } } }