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signrpc: add compact_sig flag to SignMessage

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This commit is contained in:
Oliver Gugger 2021-10-14 15:42:48 +02:00
parent 9fa9dd8e43
commit 917cf4e99b
No known key found for this signature in database
GPG Key ID: 8E4256593F177720
4 changed files with 98 additions and 58 deletions
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129
lnrpc/signrpc/signer.pb.go
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@ -550,6 +550,10 @@ type SignMessageReq struct {
KeyLoc *KeyLocator `protobuf:"bytes,2,opt,name=key_loc,json=keyLoc,proto3" json:"key_loc,omitempty"`
// Double-SHA256 hash instead of just the default single round.
DoubleHash bool `protobuf:"varint,3,opt,name=double_hash,json=doubleHash,proto3" json:"double_hash,omitempty"`
//
//Use the compact (pubkey recoverable) format instead of the raw lnwire
//format.
CompactSig bool `protobuf:"varint,4,opt,name=compact_sig,json=compactSig,proto3" json:"compact_sig,omitempty"`
}
func (x *SignMessageReq) Reset() {
@ -605,6 +609,13 @@ func (x *SignMessageReq) GetDoubleHash() bool {
return false
}
func (x *SignMessageReq) GetCompactSig() bool {
if x != nil {
return x.CompactSig
}
return false
}
type SignMessageResp struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@ -948,64 +959,66 @@ var file_signrpc_signer_proto_rawDesc = []byte{
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}
var (

6
lnrpc/signrpc/signer.proto
View File

@ -193,6 +193,12 @@ message SignMessageReq {
// Double-SHA256 hash instead of just the default single round.
bool double_hash = 3;
/*
Use the compact (pubkey recoverable) format instead of the raw lnwire
format.
*/
bool compact_sig = 4;
}
message SignMessageResp {
/*

4
lnrpc/signrpc/signer.swagger.json
View File

@ -358,6 +358,10 @@
"double_hash": {
"type": "boolean",
"description": "Double-SHA256 hash instead of just the default single round."
},
"compact_sig": {
"type": "boolean",
"description": "Use the compact (pubkey recoverable) format instead of the raw lnwire\nformat."
}
}
},

17
lnrpc/signrpc/signer_server.go
View File

@ -462,6 +462,23 @@ func (s *Server) SignMessage(_ context.Context,
Index: uint32(in.KeyLoc.KeyIndex),
}
// To allow a watch-only wallet to forward the SignMessageCompact to an
// endpoint that doesn't add the message prefix, we allow this RPC to
// also return the compact signature format instead of adding a flag to
// the lnrpc.SignMessage call that removes the message prefix.
if in.CompactSig {
sigBytes, err := s.cfg.KeyRing.SignMessageCompact(
keyLocator, in.Msg, in.DoubleHash,
)
if err != nil {
return nil, fmt.Errorf("can't sign the hash: %v", err)
}
return &SignMessageResp{
Signature: sigBytes,
}, nil
}
// Create the raw ECDSA signature first and convert it to the final wire
// format after.
sig, err := s.cfg.KeyRing.SignMessage(