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multi: add p2tr tapscript signing capabilities
This commit is contained in:
Oliver Gugger
@@ -334,6 +334,10 @@ type SignReq struct {
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RawTxBytes []byte `protobuf:"bytes,1,opt,name=raw_tx_bytes,json=rawTxBytes,proto3" json:"raw_tx_bytes,omitempty"`
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// A set of sign descriptors, for each input to be signed.
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SignDescs []*SignDescriptor `protobuf:"bytes,2,rep,name=sign_descs,json=signDescs,proto3" json:"sign_descs,omitempty"`
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//
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//The full list of UTXO information for each of the inputs being spent. This
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//is required when spending one or more taproot (SegWit v1) outputs.
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PrevOutputs []*TxOut `protobuf:"bytes,3,rep,name=prev_outputs,json=prevOutputs,proto3" json:"prev_outputs,omitempty"`
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}
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func (x *SignReq) Reset() {
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@@ -382,6 +386,13 @@ func (x *SignReq) GetSignDescs() []*SignDescriptor {
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return nil
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}
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func (x *SignReq) GetPrevOutputs() []*TxOut {
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if x != nil {
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return x.PrevOutputs
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}
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return nil
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}
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type SignResp struct {
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state protoimpl.MessageState
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sizeCache protoimpl.SizeCache
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@@ -940,85 +951,88 @@ var file_signrpc_signer_proto_rawDesc = []byte{
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|
||||
}
|
||||
|
||||
var (
|
||||
@@ -1055,25 +1069,26 @@ var file_signrpc_signer_proto_depIdxs = []int32{
|
||||
1, // 1: signrpc.SignDescriptor.key_desc:type_name -> signrpc.KeyDescriptor
|
||||
2, // 2: signrpc.SignDescriptor.output:type_name -> signrpc.TxOut
|
||||
3, // 3: signrpc.SignReq.sign_descs:type_name -> signrpc.SignDescriptor
|
||||
6, // 4: signrpc.InputScriptResp.input_scripts:type_name -> signrpc.InputScript
|
||||
0, // 5: signrpc.SignMessageReq.key_loc:type_name -> signrpc.KeyLocator
|
||||
0, // 6: signrpc.SharedKeyRequest.key_loc:type_name -> signrpc.KeyLocator
|
||||
1, // 7: signrpc.SharedKeyRequest.key_desc:type_name -> signrpc.KeyDescriptor
|
||||
4, // 8: signrpc.Signer.SignOutputRaw:input_type -> signrpc.SignReq
|
||||
4, // 9: signrpc.Signer.ComputeInputScript:input_type -> signrpc.SignReq
|
||||
8, // 10: signrpc.Signer.SignMessage:input_type -> signrpc.SignMessageReq
|
||||
10, // 11: signrpc.Signer.VerifyMessage:input_type -> signrpc.VerifyMessageReq
|
||||
12, // 12: signrpc.Signer.DeriveSharedKey:input_type -> signrpc.SharedKeyRequest
|
||||
5, // 13: signrpc.Signer.SignOutputRaw:output_type -> signrpc.SignResp
|
||||
7, // 14: signrpc.Signer.ComputeInputScript:output_type -> signrpc.InputScriptResp
|
||||
9, // 15: signrpc.Signer.SignMessage:output_type -> signrpc.SignMessageResp
|
||||
11, // 16: signrpc.Signer.VerifyMessage:output_type -> signrpc.VerifyMessageResp
|
||||
13, // 17: signrpc.Signer.DeriveSharedKey:output_type -> signrpc.SharedKeyResponse
|
||||
13, // [13:18] is the sub-list for method output_type
|
||||
8, // [8:13] is the sub-list for method input_type
|
||||
8, // [8:8] is the sub-list for extension type_name
|
||||
8, // [8:8] is the sub-list for extension extendee
|
||||
0, // [0:8] is the sub-list for field type_name
|
||||
2, // 4: signrpc.SignReq.prev_outputs:type_name -> signrpc.TxOut
|
||||
6, // 5: signrpc.InputScriptResp.input_scripts:type_name -> signrpc.InputScript
|
||||
0, // 6: signrpc.SignMessageReq.key_loc:type_name -> signrpc.KeyLocator
|
||||
0, // 7: signrpc.SharedKeyRequest.key_loc:type_name -> signrpc.KeyLocator
|
||||
1, // 8: signrpc.SharedKeyRequest.key_desc:type_name -> signrpc.KeyDescriptor
|
||||
4, // 9: signrpc.Signer.SignOutputRaw:input_type -> signrpc.SignReq
|
||||
4, // 10: signrpc.Signer.ComputeInputScript:input_type -> signrpc.SignReq
|
||||
8, // 11: signrpc.Signer.SignMessage:input_type -> signrpc.SignMessageReq
|
||||
10, // 12: signrpc.Signer.VerifyMessage:input_type -> signrpc.VerifyMessageReq
|
||||
12, // 13: signrpc.Signer.DeriveSharedKey:input_type -> signrpc.SharedKeyRequest
|
||||
5, // 14: signrpc.Signer.SignOutputRaw:output_type -> signrpc.SignResp
|
||||
7, // 15: signrpc.Signer.ComputeInputScript:output_type -> signrpc.InputScriptResp
|
||||
9, // 16: signrpc.Signer.SignMessage:output_type -> signrpc.SignMessageResp
|
||||
11, // 17: signrpc.Signer.VerifyMessage:output_type -> signrpc.VerifyMessageResp
|
||||
13, // 18: signrpc.Signer.DeriveSharedKey:output_type -> signrpc.SharedKeyResponse
|
||||
14, // [14:19] is the sub-list for method output_type
|
||||
9, // [9:14] is the sub-list for method input_type
|
||||
9, // [9:9] is the sub-list for extension type_name
|
||||
9, // [9:9] is the sub-list for extension extendee
|
||||
0, // [0:9] is the sub-list for field type_name
|
||||
}
|
||||
|
||||
func init() { file_signrpc_signer_proto_init() }
|
||||
|
||||
@@ -158,6 +158,12 @@ message SignReq {
|
||||
|
||||
// A set of sign descriptors, for each input to be signed.
|
||||
repeated SignDescriptor sign_descs = 2;
|
||||
|
||||
/*
|
||||
The full list of UTXO information for each of the inputs being spent. This
|
||||
is required when spending one or more taproot (SegWit v1) outputs.
|
||||
*/
|
||||
repeated TxOut prev_outputs = 3;
|
||||
}
|
||||
|
||||
message SignResp {
|
||||
|
||||
@@ -389,6 +389,13 @@
|
||||
"$ref": "#/definitions/signrpcSignDescriptor"
|
||||
},
|
||||
"description": "A set of sign descriptors, for each input to be signed."
|
||||
},
|
||||
"prev_outputs": {
|
||||
"type": "array",
|
||||
"items": {
|
||||
"$ref": "#/definitions/signrpcTxOut"
|
||||
},
|
||||
"description": "The full list of UTXO information for each of the inputs being spent. This\nis required when spending one or more taproot (SegWit v1) outputs."
|
||||
}
|
||||
}
|
||||
},
|
||||
|
||||
@@ -238,7 +238,7 @@ func (r *ServerShell) CreateSubServer(configRegistry lnrpc.SubServerConfigDispat
|
||||
// provides an invalid transaction, then we'll return with an error.
|
||||
//
|
||||
// NOTE: The resulting signature should be void of a sighash byte.
|
||||
func (s *Server) SignOutputRaw(ctx context.Context, in *SignReq) (*SignResp,
|
||||
func (s *Server) SignOutputRaw(_ context.Context, in *SignReq) (*SignResp,
|
||||
error) {
|
||||
|
||||
switch {
|
||||
@@ -266,7 +266,33 @@ func (s *Server) SignOutputRaw(ctx context.Context, in *SignReq) (*SignResp,
|
||||
return nil, fmt.Errorf("unable to decode tx: %v", err)
|
||||
}
|
||||
|
||||
sigHashCache := input.NewTxSigHashesV0Only(&txToSign)
|
||||
var (
|
||||
sigHashCache = input.NewTxSigHashesV0Only(&txToSign)
|
||||
prevOutputFetcher = txscript.NewMultiPrevOutFetcher(nil)
|
||||
)
|
||||
|
||||
// If we're spending one or more SegWit v1 (Taproot) inputs, then we
|
||||
// need the full UTXO information available.
|
||||
if len(in.PrevOutputs) > 0 {
|
||||
if len(in.PrevOutputs) != len(txToSign.TxIn) {
|
||||
return nil, fmt.Errorf("provided previous outputs " +
|
||||
"doesn't match number of transaction inputs")
|
||||
}
|
||||
|
||||
// Add all previous inputs to our sighash prev out fetcher so we
|
||||
// can calculate the sighash correctly.
|
||||
for idx, txIn := range txToSign.TxIn {
|
||||
prevOutputFetcher.AddPrevOut(
|
||||
txIn.PreviousOutPoint, &wire.TxOut{
|
||||
Value: in.PrevOutputs[idx].Value,
|
||||
PkScript: in.PrevOutputs[idx].PkScript,
|
||||
},
|
||||
)
|
||||
}
|
||||
sigHashCache = txscript.NewTxSigHashes(
|
||||
&txToSign, prevOutputFetcher,
|
||||
)
|
||||
}
|
||||
|
||||
log.Debugf("Generating sigs for %v inputs: ", len(in.SignDescs))
|
||||
|
||||
@@ -344,9 +370,10 @@ func (s *Server) SignOutputRaw(ctx context.Context, in *SignReq) (*SignResp,
|
||||
Value: signDesc.Output.Value,
|
||||
PkScript: signDesc.Output.PkScript,
|
||||
},
|
||||
HashType: txscript.SigHashType(signDesc.Sighash),
|
||||
SigHashes: sigHashCache,
|
||||
InputIndex: int(signDesc.InputIndex),
|
||||
HashType: txscript.SigHashType(signDesc.Sighash),
|
||||
SigHashes: sigHashCache,
|
||||
InputIndex: int(signDesc.InputIndex),
|
||||
PrevOutputFetcher: prevOutputFetcher,
|
||||
})
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user