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lnrpc+rpcwallet: add version to MuSig2 RPC calls

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This commit is contained in:
Oliver Gugger
2023-01-27 16:13:18 +01:00
parent ce5fa2e043
commit 13252aec1d
6 changed files with 515 additions and 243 deletions
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576
lnrpc/signrpc/signer.pb.go
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@@ -80,6 +80,62 @@ func (SignMethod) EnumDescriptor() ([]byte, []int) {
return file_signrpc_signer_proto_rawDescGZIP(), []int{0}
}
type MuSig2Version int32
const (
// The default value on the RPC is zero for enums so we need to represent an
// invalid/undefined version by default to make sure clients upgrade their
// software to set the version explicitly.
MuSig2Version_MUSIG2_VERSION_UNDEFINED MuSig2Version = 0
// The version of MuSig2 that lnd 0.15.x shipped with, which corresponds to the
// version v0.4.0 of the MuSig2 BIP draft.
MuSig2Version_MUSIG2_VERSION_V040 MuSig2Version = 1
// The current version of MuSig2 which corresponds to the version v1.0.0rc2 of
// the MuSig2 BIP draft.
MuSig2Version_MUSIG2_VERSION_V100RC2 MuSig2Version = 2
)
// Enum value maps for MuSig2Version.
var (
MuSig2Version_name = map[int32]string{
0: "MUSIG2_VERSION_UNDEFINED",
1: "MUSIG2_VERSION_V040",
2: "MUSIG2_VERSION_V100RC2",
}
MuSig2Version_value = map[string]int32{
"MUSIG2_VERSION_UNDEFINED": 0,
"MUSIG2_VERSION_V040": 1,
"MUSIG2_VERSION_V100RC2": 2,
}
)
func (x MuSig2Version) Enum() *MuSig2Version {
p := new(MuSig2Version)
*p = x
return p
}
func (x MuSig2Version) String() string {
return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
}
func (MuSig2Version) Descriptor() protoreflect.EnumDescriptor {
return file_signrpc_signer_proto_enumTypes[1].Descriptor()
}
func (MuSig2Version) Type() protoreflect.EnumType {
return &file_signrpc_signer_proto_enumTypes[1]
}
func (x MuSig2Version) Number() protoreflect.EnumNumber {
return protoreflect.EnumNumber(x)
}
// Deprecated: Use MuSig2Version.Descriptor instead.
func (MuSig2Version) EnumDescriptor() ([]byte, []int) {
return file_signrpc_signer_proto_rawDescGZIP(), []int{1}
}
type KeyLocator struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@@ -1150,10 +1206,10 @@ type MuSig2CombineKeysRequest struct {
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
// A list of all public keys (serialized in 32-byte x-only format!)
// participating in the signing session. The list will always be sorted
// lexicographically internally. This must include the local key which is
// described by the above key_loc.
// A list of all public keys (serialized in 32-byte x-only format for v0.4.0
// and 33-byte compressed format for v1.0.0rc2!) participating in the signing
// session. The list will always be sorted lexicographically internally. This
// must include the local key which is described by the above key_loc.
AllSignerPubkeys [][]byte `protobuf:"bytes,1,rep,name=all_signer_pubkeys,json=allSignerPubkeys,proto3" json:"all_signer_pubkeys,omitempty"`
// A series of optional generic tweaks to be applied to the the aggregated
// public key.
@@ -1162,6 +1218,11 @@ type MuSig2CombineKeysRequest struct {
// combined key will be used as the main taproot key of a taproot output
// on-chain.
TaprootTweak *TaprootTweakDesc `protobuf:"bytes,3,opt,name=taproot_tweak,json=taprootTweak,proto3" json:"taproot_tweak,omitempty"`
// The mandatory version of the MuSig2 BIP draft to use. This is necessary to
// differentiate between the changes that were made to the BIP while this
// experimental RPC was already released. Some of those changes affect how the
// combined key and nonces are created.
Version MuSig2Version `protobuf:"varint,4,opt,name=version,proto3,enum=signrpc.MuSig2Version" json:"version,omitempty"`
}
func (x *MuSig2CombineKeysRequest) Reset() {
@@ -1217,6 +1278,13 @@ func (x *MuSig2CombineKeysRequest) GetTaprootTweak() *TaprootTweakDesc {
return nil
}
func (x *MuSig2CombineKeysRequest) GetVersion() MuSig2Version {
if x != nil {
return x.Version
}
return MuSig2Version_MUSIG2_VERSION_UNDEFINED
}
type MuSig2CombineKeysResponse struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@@ -1231,6 +1299,8 @@ type MuSig2CombineKeysResponse struct {
// internal key that needs to be put into the witness if the script spend path
// is used.
TaprootInternalKey []byte `protobuf:"bytes,2,opt,name=taproot_internal_key,json=taprootInternalKey,proto3" json:"taproot_internal_key,omitempty"`
// The version of the MuSig2 BIP that was used to combine the keys.
Version MuSig2Version `protobuf:"varint,4,opt,name=version,proto3,enum=signrpc.MuSig2Version" json:"version,omitempty"`
}
func (x *MuSig2CombineKeysResponse) Reset() {
@@ -1279,6 +1349,13 @@ func (x *MuSig2CombineKeysResponse) GetTaprootInternalKey() []byte {
return nil
}
func (x *MuSig2CombineKeysResponse) GetVersion() MuSig2Version {
if x != nil {
return x.Version
}
return MuSig2Version_MUSIG2_VERSION_UNDEFINED
}
type MuSig2SessionRequest struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@@ -1286,10 +1363,10 @@ type MuSig2SessionRequest struct {
// The key locator that identifies which key to use for signing.
KeyLoc *KeyLocator `protobuf:"bytes,1,opt,name=key_loc,json=keyLoc,proto3" json:"key_loc,omitempty"`
// A list of all public keys (serialized in 32-byte x-only format!)
// participating in the signing session. The list will always be sorted
// lexicographically internally. This must include the local key which is
// described by the above key_loc.
// A list of all public keys (serialized in 32-byte x-only format for v0.4.0
// and 33-byte compressed format for v1.0.0rc2!) participating in the signing
// session. The list will always be sorted lexicographically internally. This
// must include the local key which is described by the above key_loc.
AllSignerPubkeys [][]byte `protobuf:"bytes,2,rep,name=all_signer_pubkeys,json=allSignerPubkeys,proto3" json:"all_signer_pubkeys,omitempty"`
// An optional list of all public nonces of other signing participants that
// might already be known.
@@ -1301,6 +1378,11 @@ type MuSig2SessionRequest struct {
// combined key will be used as the main taproot key of a taproot output
// on-chain.
TaprootTweak *TaprootTweakDesc `protobuf:"bytes,5,opt,name=taproot_tweak,json=taprootTweak,proto3" json:"taproot_tweak,omitempty"`
// The mandatory version of the MuSig2 BIP draft to use. This is necessary to
// differentiate between the changes that were made to the BIP while this
// experimental RPC was already released. Some of those changes affect how the
// combined key and nonces are created.
Version MuSig2Version `protobuf:"varint,6,opt,name=version,proto3,enum=signrpc.MuSig2Version" json:"version,omitempty"`
}
func (x *MuSig2SessionRequest) Reset() {
@@ -1370,6 +1452,13 @@ func (x *MuSig2SessionRequest) GetTaprootTweak() *TaprootTweakDesc {
return nil
}
func (x *MuSig2SessionRequest) GetVersion() MuSig2Version {
if x != nil {
return x.Version
}
return MuSig2Version_MUSIG2_VERSION_UNDEFINED
}
type MuSig2SessionResponse struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@@ -1395,6 +1484,8 @@ type MuSig2SessionResponse struct {
// Indicates whether all nonces required to start the signing process are known
// now.
HaveAllNonces bool `protobuf:"varint,5,opt,name=have_all_nonces,json=haveAllNonces,proto3" json:"have_all_nonces,omitempty"`
// The version of the MuSig2 BIP that was used to create the session.
Version MuSig2Version `protobuf:"varint,6,opt,name=version,proto3,enum=signrpc.MuSig2Version" json:"version,omitempty"`
}
func (x *MuSig2SessionResponse) Reset() {
@@ -1464,6 +1555,13 @@ func (x *MuSig2SessionResponse) GetHaveAllNonces() bool {
return false
}
func (x *MuSig2SessionResponse) GetVersion() MuSig2Version {
if x != nil {
return x.Version
}
return MuSig2Version_MUSIG2_VERSION_UNDEFINED
}
type MuSig2RegisterNoncesRequest struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@@ -2005,7 +2103,7 @@ var file_signrpc_signer_proto_rawDesc = []byte{
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@@ -2016,158 +2114,177 @@ var file_signrpc_signer_proto_rawDesc = []byte{
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0x33,
}
var (
@@ -2182,82 +2299,87 @@ func file_signrpc_signer_proto_rawDescGZIP() []byte {
return file_signrpc_signer_proto_rawDescData
}
var file_signrpc_signer_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
var file_signrpc_signer_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
var file_signrpc_signer_proto_msgTypes = make([]protoimpl.MessageInfo, 28)
var file_signrpc_signer_proto_goTypes = []interface{}{
(SignMethod)(0), // 0: signrpc.SignMethod
(*KeyLocator)(nil), // 1: signrpc.KeyLocator
(*KeyDescriptor)(nil), // 2: signrpc.KeyDescriptor
(*TxOut)(nil), // 3: signrpc.TxOut
(*SignDescriptor)(nil), // 4: signrpc.SignDescriptor
(*SignReq)(nil), // 5: signrpc.SignReq
(*SignResp)(nil), // 6: signrpc.SignResp
(*InputScript)(nil), // 7: signrpc.InputScript
(*InputScriptResp)(nil), // 8: signrpc.InputScriptResp
(*SignMessageReq)(nil), // 9: signrpc.SignMessageReq
(*SignMessageResp)(nil), // 10: signrpc.SignMessageResp
(*VerifyMessageReq)(nil), // 11: signrpc.VerifyMessageReq
(*VerifyMessageResp)(nil), // 12: signrpc.VerifyMessageResp
(*SharedKeyRequest)(nil), // 13: signrpc.SharedKeyRequest
(*SharedKeyResponse)(nil), // 14: signrpc.SharedKeyResponse
(*TweakDesc)(nil), // 15: signrpc.TweakDesc
(*TaprootTweakDesc)(nil), // 16: signrpc.TaprootTweakDesc
(*MuSig2CombineKeysRequest)(nil), // 17: signrpc.MuSig2CombineKeysRequest
(*MuSig2CombineKeysResponse)(nil), // 18: signrpc.MuSig2CombineKeysResponse
(*MuSig2SessionRequest)(nil), // 19: signrpc.MuSig2SessionRequest
(*MuSig2SessionResponse)(nil), // 20: signrpc.MuSig2SessionResponse
(*MuSig2RegisterNoncesRequest)(nil), // 21: signrpc.MuSig2RegisterNoncesRequest
(*MuSig2RegisterNoncesResponse)(nil), // 22: signrpc.MuSig2RegisterNoncesResponse
(*MuSig2SignRequest)(nil), // 23: signrpc.MuSig2SignRequest
(*MuSig2SignResponse)(nil), // 24: signrpc.MuSig2SignResponse
(*MuSig2CombineSigRequest)(nil), // 25: signrpc.MuSig2CombineSigRequest
(*MuSig2CombineSigResponse)(nil), // 26: signrpc.MuSig2CombineSigResponse
(*MuSig2CleanupRequest)(nil), // 27: signrpc.MuSig2CleanupRequest
(*MuSig2CleanupResponse)(nil), // 28: signrpc.MuSig2CleanupResponse
(MuSig2Version)(0), // 1: signrpc.MuSig2Version
(*KeyLocator)(nil), // 2: signrpc.KeyLocator
(*KeyDescriptor)(nil), // 3: signrpc.KeyDescriptor
(*TxOut)(nil), // 4: signrpc.TxOut
(*SignDescriptor)(nil), // 5: signrpc.SignDescriptor
(*SignReq)(nil), // 6: signrpc.SignReq
(*SignResp)(nil), // 7: signrpc.SignResp
(*InputScript)(nil), // 8: signrpc.InputScript
(*InputScriptResp)(nil), // 9: signrpc.InputScriptResp
(*SignMessageReq)(nil), // 10: signrpc.SignMessageReq
(*SignMessageResp)(nil), // 11: signrpc.SignMessageResp
(*VerifyMessageReq)(nil), // 12: signrpc.VerifyMessageReq
(*VerifyMessageResp)(nil), // 13: signrpc.VerifyMessageResp
(*SharedKeyRequest)(nil), // 14: signrpc.SharedKeyRequest
(*SharedKeyResponse)(nil), // 15: signrpc.SharedKeyResponse
(*TweakDesc)(nil), // 16: signrpc.TweakDesc
(*TaprootTweakDesc)(nil), // 17: signrpc.TaprootTweakDesc
(*MuSig2CombineKeysRequest)(nil), // 18: signrpc.MuSig2CombineKeysRequest
(*MuSig2CombineKeysResponse)(nil), // 19: signrpc.MuSig2CombineKeysResponse
(*MuSig2SessionRequest)(nil), // 20: signrpc.MuSig2SessionRequest
(*MuSig2SessionResponse)(nil), // 21: signrpc.MuSig2SessionResponse
(*MuSig2RegisterNoncesRequest)(nil), // 22: signrpc.MuSig2RegisterNoncesRequest
(*MuSig2RegisterNoncesResponse)(nil), // 23: signrpc.MuSig2RegisterNoncesResponse
(*MuSig2SignRequest)(nil), // 24: signrpc.MuSig2SignRequest
(*MuSig2SignResponse)(nil), // 25: signrpc.MuSig2SignResponse
(*MuSig2CombineSigRequest)(nil), // 26: signrpc.MuSig2CombineSigRequest
(*MuSig2CombineSigResponse)(nil), // 27: signrpc.MuSig2CombineSigResponse
(*MuSig2CleanupRequest)(nil), // 28: signrpc.MuSig2CleanupRequest
(*MuSig2CleanupResponse)(nil), // 29: signrpc.MuSig2CleanupResponse
}
var file_signrpc_signer_proto_depIdxs = []int32{
1, // 0: signrpc.KeyDescriptor.key_loc:type_name -> signrpc.KeyLocator
2, // 1: signrpc.SignDescriptor.key_desc:type_name -> signrpc.KeyDescriptor
3, // 2: signrpc.SignDescriptor.output:type_name -> signrpc.TxOut
2, // 0: signrpc.KeyDescriptor.key_loc:type_name -> signrpc.KeyLocator
3, // 1: signrpc.SignDescriptor.key_desc:type_name -> signrpc.KeyDescriptor
4, // 2: signrpc.SignDescriptor.output:type_name -> signrpc.TxOut
0, // 3: signrpc.SignDescriptor.sign_method:type_name -> signrpc.SignMethod
4, // 4: signrpc.SignReq.sign_descs:type_name -> signrpc.SignDescriptor
3, // 5: signrpc.SignReq.prev_outputs:type_name -> signrpc.TxOut
7, // 6: signrpc.InputScriptResp.input_scripts:type_name -> signrpc.InputScript
1, // 7: signrpc.SignMessageReq.key_loc:type_name -> signrpc.KeyLocator
1, // 8: signrpc.SharedKeyRequest.key_loc:type_name -> signrpc.KeyLocator
2, // 9: signrpc.SharedKeyRequest.key_desc:type_name -> signrpc.KeyDescriptor
15, // 10: signrpc.MuSig2CombineKeysRequest.tweaks:type_name -> signrpc.TweakDesc
16, // 11: signrpc.MuSig2CombineKeysRequest.taproot_tweak:type_name -> signrpc.TaprootTweakDesc
1, // 12: signrpc.MuSig2SessionRequest.key_loc:type_name -> signrpc.KeyLocator
15, // 13: signrpc.MuSig2SessionRequest.tweaks:type_name -> signrpc.TweakDesc
16, // 14: signrpc.MuSig2SessionRequest.taproot_tweak:type_name -> signrpc.TaprootTweakDesc
5, // 15: signrpc.Signer.SignOutputRaw:input_type -> signrpc.SignReq
5, // 16: signrpc.Signer.ComputeInputScript:input_type -> signrpc.SignReq
9, // 17: signrpc.Signer.SignMessage:input_type -> signrpc.SignMessageReq
11, // 18: signrpc.Signer.VerifyMessage:input_type -> signrpc.VerifyMessageReq
13, // 19: signrpc.Signer.DeriveSharedKey:input_type -> signrpc.SharedKeyRequest
17, // 20: signrpc.Signer.MuSig2CombineKeys:input_type -> signrpc.MuSig2CombineKeysRequest
19, // 21: signrpc.Signer.MuSig2CreateSession:input_type -> signrpc.MuSig2SessionRequest
21, // 22: signrpc.Signer.MuSig2RegisterNonces:input_type -> signrpc.MuSig2RegisterNoncesRequest
23, // 23: signrpc.Signer.MuSig2Sign:input_type -> signrpc.MuSig2SignRequest
25, // 24: signrpc.Signer.MuSig2CombineSig:input_type -> signrpc.MuSig2CombineSigRequest
27, // 25: signrpc.Signer.MuSig2Cleanup:input_type -> signrpc.MuSig2CleanupRequest
6, // 26: signrpc.Signer.SignOutputRaw:output_type -> signrpc.SignResp
8, // 27: signrpc.Signer.ComputeInputScript:output_type -> signrpc.InputScriptResp
10, // 28: signrpc.Signer.SignMessage:output_type -> signrpc.SignMessageResp
12, // 29: signrpc.Signer.VerifyMessage:output_type -> signrpc.VerifyMessageResp
14, // 30: signrpc.Signer.DeriveSharedKey:output_type -> signrpc.SharedKeyResponse
18, // 31: signrpc.Signer.MuSig2CombineKeys:output_type -> signrpc.MuSig2CombineKeysResponse
20, // 32: signrpc.Signer.MuSig2CreateSession:output_type -> signrpc.MuSig2SessionResponse
22, // 33: signrpc.Signer.MuSig2RegisterNonces:output_type -> signrpc.MuSig2RegisterNoncesResponse
24, // 34: signrpc.Signer.MuSig2Sign:output_type -> signrpc.MuSig2SignResponse
26, // 35: signrpc.Signer.MuSig2CombineSig:output_type -> signrpc.MuSig2CombineSigResponse
28, // 36: signrpc.Signer.MuSig2Cleanup:output_type -> signrpc.MuSig2CleanupResponse
26, // [26:37] is the sub-list for method output_type
15, // [15:26] is the sub-list for method input_type
15, // [15:15] is the sub-list for extension type_name
15, // [15:15] is the sub-list for extension extendee
0, // [0:15] is the sub-list for field type_name
5, // 4: signrpc.SignReq.sign_descs:type_name -> signrpc.SignDescriptor
4, // 5: signrpc.SignReq.prev_outputs:type_name -> signrpc.TxOut
8, // 6: signrpc.InputScriptResp.input_scripts:type_name -> signrpc.InputScript
2, // 7: signrpc.SignMessageReq.key_loc:type_name -> signrpc.KeyLocator
2, // 8: signrpc.SharedKeyRequest.key_loc:type_name -> signrpc.KeyLocator
3, // 9: signrpc.SharedKeyRequest.key_desc:type_name -> signrpc.KeyDescriptor
16, // 10: signrpc.MuSig2CombineKeysRequest.tweaks:type_name -> signrpc.TweakDesc
17, // 11: signrpc.MuSig2CombineKeysRequest.taproot_tweak:type_name -> signrpc.TaprootTweakDesc
1, // 12: signrpc.MuSig2CombineKeysRequest.version:type_name -> signrpc.MuSig2Version
1, // 13: signrpc.MuSig2CombineKeysResponse.version:type_name -> signrpc.MuSig2Version
2, // 14: signrpc.MuSig2SessionRequest.key_loc:type_name -> signrpc.KeyLocator
16, // 15: signrpc.MuSig2SessionRequest.tweaks:type_name -> signrpc.TweakDesc
17, // 16: signrpc.MuSig2SessionRequest.taproot_tweak:type_name -> signrpc.TaprootTweakDesc
1, // 17: signrpc.MuSig2SessionRequest.version:type_name -> signrpc.MuSig2Version
1, // 18: signrpc.MuSig2SessionResponse.version:type_name -> signrpc.MuSig2Version
6, // 19: signrpc.Signer.SignOutputRaw:input_type -> signrpc.SignReq
6, // 20: signrpc.Signer.ComputeInputScript:input_type -> signrpc.SignReq
10, // 21: signrpc.Signer.SignMessage:input_type -> signrpc.SignMessageReq
12, // 22: signrpc.Signer.VerifyMessage:input_type -> signrpc.VerifyMessageReq
14, // 23: signrpc.Signer.DeriveSharedKey:input_type -> signrpc.SharedKeyRequest
18, // 24: signrpc.Signer.MuSig2CombineKeys:input_type -> signrpc.MuSig2CombineKeysRequest
20, // 25: signrpc.Signer.MuSig2CreateSession:input_type -> signrpc.MuSig2SessionRequest
22, // 26: signrpc.Signer.MuSig2RegisterNonces:input_type -> signrpc.MuSig2RegisterNoncesRequest
24, // 27: signrpc.Signer.MuSig2Sign:input_type -> signrpc.MuSig2SignRequest
26, // 28: signrpc.Signer.MuSig2CombineSig:input_type -> signrpc.MuSig2CombineSigRequest
28, // 29: signrpc.Signer.MuSig2Cleanup:input_type -> signrpc.MuSig2CleanupRequest
7, // 30: signrpc.Signer.SignOutputRaw:output_type -> signrpc.SignResp
9, // 31: signrpc.Signer.ComputeInputScript:output_type -> signrpc.InputScriptResp
11, // 32: signrpc.Signer.SignMessage:output_type -> signrpc.SignMessageResp
13, // 33: signrpc.Signer.VerifyMessage:output_type -> signrpc.VerifyMessageResp
15, // 34: signrpc.Signer.DeriveSharedKey:output_type -> signrpc.SharedKeyResponse
19, // 35: signrpc.Signer.MuSig2CombineKeys:output_type -> signrpc.MuSig2CombineKeysResponse
21, // 36: signrpc.Signer.MuSig2CreateSession:output_type -> signrpc.MuSig2SessionResponse
23, // 37: signrpc.Signer.MuSig2RegisterNonces:output_type -> signrpc.MuSig2RegisterNoncesResponse
25, // 38: signrpc.Signer.MuSig2Sign:output_type -> signrpc.MuSig2SignResponse
27, // 39: signrpc.Signer.MuSig2CombineSig:output_type -> signrpc.MuSig2CombineSigResponse
29, // 40: signrpc.Signer.MuSig2Cleanup:output_type -> signrpc.MuSig2CleanupResponse
30, // [30:41] is the sub-list for method output_type
19, // [19:30] is the sub-list for method input_type
19, // [19:19] is the sub-list for extension type_name
19, // [19:19] is the sub-list for extension extendee
0, // [0:19] is the sub-list for field type_name
}
func init() { file_signrpc_signer_proto_init() }
@@ -2608,7 +2730,7 @@ func file_signrpc_signer_proto_init() {
File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_signrpc_signer_proto_rawDesc,
NumEnums: 1,
NumEnums: 2,
NumMessages: 28,
NumExtensions: 0,
NumServices: 1,

63
lnrpc/signrpc/signer.proto
View File

@@ -444,12 +444,33 @@ message TaprootTweakDesc {
bool key_spend_only = 2;
}
enum MuSig2Version {
/*
The default value on the RPC is zero for enums so we need to represent an
invalid/undefined version by default to make sure clients upgrade their
software to set the version explicitly.
*/
MUSIG2_VERSION_UNDEFINED = 0;
/*
The version of MuSig2 that lnd 0.15.x shipped with, which corresponds to the
version v0.4.0 of the MuSig2 BIP draft.
*/
MUSIG2_VERSION_V040 = 1;
/*
The current version of MuSig2 which corresponds to the version v1.0.0rc2 of
the MuSig2 BIP draft.
*/
MUSIG2_VERSION_V100RC2 = 2;
}
message MuSig2CombineKeysRequest {
/*
A list of all public keys (serialized in 32-byte x-only format!)
participating in the signing session. The list will always be sorted
lexicographically internally. This must include the local key which is
described by the above key_loc.
A list of all public keys (serialized in 32-byte x-only format for v0.4.0
and 33-byte compressed format for v1.0.0rc2!) participating in the signing
session. The list will always be sorted lexicographically internally. This
must include the local key which is described by the above key_loc.
*/
repeated bytes all_signer_pubkeys = 1;
@@ -465,6 +486,14 @@ message MuSig2CombineKeysRequest {
on-chain.
*/
TaprootTweakDesc taproot_tweak = 3;
/*
The mandatory version of the MuSig2 BIP draft to use. This is necessary to
differentiate between the changes that were made to the BIP while this
experimental RPC was already released. Some of those changes affect how the
combined key and nonces are created.
*/
MuSig2Version version = 4;
}
message MuSig2CombineKeysResponse {
@@ -482,6 +511,11 @@ message MuSig2CombineKeysResponse {
is used.
*/
bytes taproot_internal_key = 2;
/*
The version of the MuSig2 BIP that was used to combine the keys.
*/
MuSig2Version version = 4;
}
message MuSig2SessionRequest {
@@ -491,10 +525,10 @@ message MuSig2SessionRequest {
KeyLocator key_loc = 1;
/*
A list of all public keys (serialized in 32-byte x-only format!)
participating in the signing session. The list will always be sorted
lexicographically internally. This must include the local key which is
described by the above key_loc.
A list of all public keys (serialized in 32-byte x-only format for v0.4.0
and 33-byte compressed format for v1.0.0rc2!) participating in the signing
session. The list will always be sorted lexicographically internally. This
must include the local key which is described by the above key_loc.
*/
repeated bytes all_signer_pubkeys = 2;
@@ -516,6 +550,14 @@ message MuSig2SessionRequest {
on-chain.
*/
TaprootTweakDesc taproot_tweak = 5;
/*
The mandatory version of the MuSig2 BIP draft to use. This is necessary to
differentiate between the changes that were made to the BIP while this
experimental RPC was already released. Some of those changes affect how the
combined key and nonces are created.
*/
MuSig2Version version = 6;
}
message MuSig2SessionResponse {
@@ -553,6 +595,11 @@ message MuSig2SessionResponse {
now.
*/
bool have_all_nonces = 5;
/*
The version of the MuSig2 BIP that was used to create the session.
*/
MuSig2Version version = 6;
}
message MuSig2RegisterNoncesRequest {

30
lnrpc/signrpc/signer.swagger.json
View File

@@ -502,7 +502,7 @@
"type": "string",
"format": "byte"
},
"description": "A list of all public keys (serialized in 32-byte x-only format!)\nparticipating in the signing session. The list will always be sorted\nlexicographically internally. This must include the local key which is\ndescribed by the above key_loc."
"description": "A list of all public keys (serialized in 32-byte x-only format for v0.4.0\nand 33-byte compressed format for v1.0.0rc2!) participating in the signing\nsession. The list will always be sorted lexicographically internally. This\nmust include the local key which is described by the above key_loc."
},
"tweaks": {
"type": "array",
@@ -514,6 +514,10 @@
"taproot_tweak": {
"$ref": "#/definitions/signrpcTaprootTweakDesc",
"description": "An optional taproot specific tweak that must be specified if the MuSig2\ncombined key will be used as the main taproot key of a taproot output\non-chain."
},
"version": {
"$ref": "#/definitions/signrpcMuSig2Version",
"description": "The mandatory version of the MuSig2 BIP draft to use. This is necessary to\ndifferentiate between the changes that were made to the BIP while this\nexperimental RPC was already released. Some of those changes affect how the\ncombined key and nonces are created."
}
}
},
@@ -529,6 +533,10 @@
"type": "string",
"format": "byte",
"description": "The raw combined public key (in the 32-byte x-only format) before any tweaks\nare applied to it. If a taproot tweak is specified, this corresponds to the\ninternal key that needs to be put into the witness if the script spend path\nis used."
},
"version": {
"$ref": "#/definitions/signrpcMuSig2Version",
"description": "The version of the MuSig2 BIP that was used to combine the keys."
}
}
},
@@ -604,7 +612,7 @@
"type": "string",
"format": "byte"
},
"description": "A list of all public keys (serialized in 32-byte x-only format!)\nparticipating in the signing session. The list will always be sorted\nlexicographically internally. This must include the local key which is\ndescribed by the above key_loc."
"description": "A list of all public keys (serialized in 32-byte x-only format for v0.4.0\nand 33-byte compressed format for v1.0.0rc2!) participating in the signing\nsession. The list will always be sorted lexicographically internally. This\nmust include the local key which is described by the above key_loc."
},
"other_signer_public_nonces": {
"type": "array",
@@ -624,6 +632,10 @@
"taproot_tweak": {
"$ref": "#/definitions/signrpcTaprootTweakDesc",
"description": "An optional taproot specific tweak that must be specified if the MuSig2\ncombined key will be used as the main taproot key of a taproot output\non-chain."
},
"version": {
"$ref": "#/definitions/signrpcMuSig2Version",
"description": "The mandatory version of the MuSig2 BIP draft to use. This is necessary to\ndifferentiate between the changes that were made to the BIP while this\nexperimental RPC was already released. Some of those changes affect how the\ncombined key and nonces are created."
}
}
},
@@ -653,6 +665,10 @@
"have_all_nonces": {
"type": "boolean",
"description": "Indicates whether all nonces required to start the signing process are known\nnow."
},
"version": {
"$ref": "#/definitions/signrpcMuSig2Version",
"description": "The version of the MuSig2 BIP that was used to create the session."
}
}
},
@@ -685,6 +701,16 @@
}
}
},
"signrpcMuSig2Version": {
"type": "string",
"enum": [
"MUSIG2_VERSION_UNDEFINED",
"MUSIG2_VERSION_V040",
"MUSIG2_VERSION_V100RC2"
],
"default": "MUSIG2_VERSION_UNDEFINED",
"description": " - MUSIG2_VERSION_UNDEFINED: The default value on the RPC is zero for enums so we need to represent an\ninvalid/undefined version by default to make sure clients upgrade their\nsoftware to set the version explicitly.\n - MUSIG2_VERSION_V040: The version of MuSig2 that lnd 0.15.x shipped with, which corresponds to the\nversion v0.4.0 of the MuSig2 BIP draft.\n - MUSIG2_VERSION_V100RC2: The current version of MuSig2 which corresponds to the version v1.0.0rc2 of\nthe MuSig2 BIP draft."
},
"signrpcSharedKeyRequest": {
"type": "object",
"properties": {

31
lnrpc/signrpc/signer_server.go
View File

@@ -824,10 +824,20 @@ func (s *Server) DeriveSharedKey(_ context.Context, in *SharedKeyRequest) (
func (s *Server) MuSig2CombineKeys(_ context.Context,
in *MuSig2CombineKeysRequest) (*MuSig2CombineKeysResponse, error) {
// Check the now mandatory version first. We made the version mandatory,
// so we don't get unexpected/undefined behavior for old clients that
// don't specify the version. Since this API is still declared to be
// experimental this should be the approach that leads to the least
// amount of unexpected behavior.
version, err := UnmarshalMuSig2Version(in.Version)
if err != nil {
return nil, fmt.Errorf("error parsing version: %w", err)
}
// Parse the public keys of all signing participants. This must also
// include our own, local key.
allSignerPubKeys, err := input.MuSig2ParsePubKeys(
input.MuSig2Version040, in.AllSignerPubkeys,
version, in.AllSignerPubkeys,
)
if err != nil {
return nil, fmt.Errorf("error parsing all signer public "+
@@ -843,7 +853,7 @@ func (s *Server) MuSig2CombineKeys(_ context.Context,
// Combine the keys now without creating a session in memory.
combinedKey, err := input.MuSig2CombineKeys(
input.MuSig2Version040, allSignerPubKeys, true, tweaks,
version, allSignerPubKeys, true, tweaks,
)
if err != nil {
return nil, fmt.Errorf("error combining keys: %v", err)
@@ -861,6 +871,7 @@ func (s *Server) MuSig2CombineKeys(_ context.Context,
combinedKey.FinalKey,
),
TaprootInternalKey: internalKeyBytes,
Version: in.Version,
}, nil
}
@@ -872,6 +883,16 @@ func (s *Server) MuSig2CombineKeys(_ context.Context,
func (s *Server) MuSig2CreateSession(_ context.Context,
in *MuSig2SessionRequest) (*MuSig2SessionResponse, error) {
// Check the now mandatory version first. We made the version mandatory,
// so we don't get unexpected/undefined behavior for old clients that
// don't specify the version. Since this API is still declared to be
// experimental this should be the approach that leads to the least
// amount of unexpected behavior.
version, err := UnmarshalMuSig2Version(in.Version)
if err != nil {
return nil, fmt.Errorf("error parsing version: %w", err)
}
// A key locator is always mandatory.
if in.KeyLoc == nil {
return nil, fmt.Errorf("missing key_loc")
@@ -884,7 +905,7 @@ func (s *Server) MuSig2CreateSession(_ context.Context,
// Parse the public keys of all signing participants. This must also
// include our own, local key.
allSignerPubKeys, err := input.MuSig2ParsePubKeys(
input.MuSig2Version040, in.AllSignerPubkeys,
version, in.AllSignerPubkeys,
)
if err != nil {
return nil, fmt.Errorf("error parsing all signer public "+
@@ -917,8 +938,7 @@ func (s *Server) MuSig2CreateSession(_ context.Context,
// Register the session with the internal wallet/signer now.
session, err := s.cfg.Signer.MuSig2CreateSession(
input.MuSig2Version040, keyLoc, allSignerPubKeys, tweaks,
otherSignerNonces,
version, keyLoc, allSignerPubKeys, tweaks, otherSignerNonces,
)
if err != nil {
return nil, fmt.Errorf("error registering session: %v", err)
@@ -939,6 +959,7 @@ func (s *Server) MuSig2CreateSession(_ context.Context,
TaprootInternalKey: internalKeyBytes,
LocalPublicNonces: session.PublicNonce[:],
HaveAllNonces: session.HaveAllNonces,
Version: in.Version,
}, nil
}

42
lnrpc/signrpc/signer_utils.go Normal file
View File

@@ -0,0 +1,42 @@
package signrpc
import (
"fmt"
"github.com/lightningnetwork/lnd/input"
)
// UnmarshalMuSig2Version parses the RPC MuSig2 version into the native
// counterpart.
func UnmarshalMuSig2Version(rpcVersion MuSig2Version) (input.MuSig2Version,
error) {
switch rpcVersion {
case MuSig2Version_MUSIG2_VERSION_V040:
return input.MuSig2Version040, nil
case MuSig2Version_MUSIG2_VERSION_V100RC2:
return input.MuSig2Version100RC2, nil
default:
return 0, fmt.Errorf("unknown MuSig2 version <%v>, make sure "+
"your client software is up to date, the version "+
"field is mandatory for this release of lnd",
rpcVersion.String())
}
}
// MarshalMuSig2Version turns the native MuSig2 version into its RPC
// counterpart.
func MarshalMuSig2Version(version input.MuSig2Version) (MuSig2Version, error) {
switch version {
case input.MuSig2Version040:
return MuSig2Version_MUSIG2_VERSION_V040, nil
case input.MuSig2Version100RC2:
return MuSig2Version_MUSIG2_VERSION_V100RC2, nil
default:
return 0, fmt.Errorf("unknown MuSig2 version <%d>", version)
}
}

16
lnwallet/rpcwallet/rpcwallet.go
View File

@@ -646,6 +646,11 @@ func (r *RPCKeyRing) MuSig2CreateSession(bipVersion input.MuSig2Version,
otherNonces [][musig2.PubNonceSize]byte) (*input.MuSig2SessionInfo,
error) {
apiVersion, err := signrpc.MarshalMuSig2Version(bipVersion)
if err != nil {
return nil, err
}
// We need to serialize all data for the RPC call. We can do that by
// putting everything directly into the request struct.
req := &signrpc.MuSig2SessionRequest{
@@ -658,9 +663,18 @@ func (r *RPCKeyRing) MuSig2CreateSession(bipVersion input.MuSig2Version,
[]*signrpc.TweakDesc, len(tweaks.GenericTweaks),
),
OtherSignerPublicNonces: make([][]byte, len(otherNonces)),
Version: apiVersion,
}
for idx, pubKey := range pubKeys {
req.AllSignerPubkeys[idx] = schnorr.SerializePubKey(pubKey)
switch bipVersion {
case input.MuSig2Version040:
req.AllSignerPubkeys[idx] = schnorr.SerializePubKey(
pubKey,
)
case input.MuSig2Version100RC2:
req.AllSignerPubkeys[idx] = pubKey.SerializeCompressed()
}
}
for idx, genericTweak := range tweaks.GenericTweaks {
req.Tweaks[idx] = &signrpc.TweakDesc{