fix taproot address generation

go.mod

@@ -1,6 +1,6 @@
 module github.com/sideprotocol/side
 
-go 1.22
+go 1.22.2
 
 toolchain go1.22.3
 
@@ -18,6 +18,7 @@ require (
 	github.com/btcsuite/btcd/btcutil/psbt v1.1.9
 	github.com/btcsuite/btcd/chaincfg/chainhash v1.1.0
 	github.com/bufbuild/buf v1.34.0
+	github.com/bytemare/hash2curve v0.3.1-0.20241029002722-6917d1f78dda
 	github.com/cometbft/cometbft v0.38.11
 	github.com/cosmos/btcutil v1.0.5
 	github.com/cosmos/cosmos-db v1.0.2
@@ -61,6 +62,7 @@ require (
 	github.com/bufbuild/protoplugin v0.0.0-20240323223605-e2735f6c31ee // indirect
 	github.com/bufbuild/protovalidate-go v0.6.2 // indirect
 	github.com/bufbuild/protoyaml-go v0.1.9 // indirect
+	github.com/bytemare/hash v0.4.0 // indirect
 	github.com/cockroachdb/fifo v0.0.0-20240606204812-0bbfbd93a7ce // indirect
 	github.com/cockroachdb/pebble v1.1.1 // indirect
 	github.com/cockroachdb/tokenbucket v0.0.0-20230807174530-cc333fc44b06 // indirect
@@ -133,7 +135,7 @@ require (
 	cosmossdk.io/x/feegrant v0.1.1
 	cosmossdk.io/x/tx v0.13.5
 	cosmossdk.io/x/upgrade v0.1.4
-	filippo.io/edwards25519 v1.0.0 // indirect
+	filippo.io/edwards25519 v1.1.0 // indirect
 	github.com/99designs/go-keychain v0.0.0-20191008050251-8e49817e8af4 // indirect
 	github.com/99designs/keyring v1.2.1 // indirect
 	github.com/aead/siphash v1.0.1 // indirect
@@ -248,14 +250,14 @@ require (
 	go.opentelemetry.io/otel v1.31.0 // indirect
 	go.opentelemetry.io/otel/metric v1.31.0 // indirect
 	go.opentelemetry.io/otel/trace v1.31.0 // indirect
-	golang.org/x/crypto v0.26.0 // indirect
+	golang.org/x/crypto v0.28.0 // indirect
 	golang.org/x/exp v0.0.0-20240613232115-7f521ea00fb8 // indirect
 	golang.org/x/net v0.28.0 // indirect
 	golang.org/x/oauth2 v0.21.0 // indirect
 	golang.org/x/sync v0.8.0 // indirect
 	golang.org/x/sys v0.26.0 // indirect
-	golang.org/x/term v0.23.0 // indirect
-	golang.org/x/text v0.17.0 // indirect
+	golang.org/x/term v0.25.0 // indirect
+	golang.org/x/text v0.19.0 // indirect
 	google.golang.org/api v0.171.0 // indirect
 	google.golang.org/genproto v0.0.0-20240227224415-6ceb2ff114de // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20240709173604-40e1e62336c5 // indirect

go.sum

@@ -225,8 +225,8 @@ cosmossdk.io/x/tx v0.13.5/go.mod h1:V6DImnwJMTq5qFjeGWpXNiT/fjgE4HtmclRmTqRVM3w=
 cosmossdk.io/x/upgrade v0.1.4 h1:/BWJim24QHoXde8Bc64/2BSEB6W4eTydq0X/2f8+g38=
 cosmossdk.io/x/upgrade v0.1.4/go.mod h1:9v0Aj+fs97O+Ztw+tG3/tp5JSlrmT7IcFhAebQHmOPo=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
-filippo.io/edwards25519 v1.0.0 h1:0wAIcmJUqRdI8IJ/3eGi5/HwXZWPujYXXlkrQogz0Ek=
-filippo.io/edwards25519 v1.0.0/go.mod h1:N1IkdkCkiLB6tki+MYJoSx2JTY9NUlxZE7eHn5EwJns=
+filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
+filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
 github.com/99designs/go-keychain v0.0.0-20191008050251-8e49817e8af4 h1:/vQbFIOMbk2FiG/kXiLl8BRyzTWDw7gX/Hz7Dd5eDMs=
 github.com/99designs/go-keychain v0.0.0-20191008050251-8e49817e8af4/go.mod h1:hN7oaIRCjzsZ2dE+yG5k+rsdt3qcwykqK6HVGcKwsw4=
 github.com/99designs/keyring v1.2.1 h1:tYLp1ULvO7i3fI5vE21ReQuj99QFSs7lGm0xWyJo87o=
@@ -334,6 +334,10 @@ github.com/bufbuild/protoyaml-go v0.1.9/go.mod h1:KCBItkvZOK/zwGueLdH1Wx1RLyFn5r
 github.com/bytedance/sonic v1.5.0/go.mod h1:ED5hyg4y6t3/9Ku1R6dU/4KyJ48DZ4jPhfY1O2AihPM=
 github.com/bytedance/sonic v1.9.1 h1:6iJ6NqdoxCDr6mbY8h18oSO+cShGSMRGCEo7F2h0x8s=
 github.com/bytedance/sonic v1.9.1/go.mod h1:i736AoUSYt75HyZLoJW9ERYxcy6eaN6h4BZXU064P/U=
+github.com/bytemare/hash v0.4.0 h1:1eqsPEe4J7m7xAaf32+2RKdxZslUSaJT7pezLbLOusg=
+github.com/bytemare/hash v0.4.0/go.mod h1:5iEyBKNz+gBzvj7ermjXTrXz64fQUHVc2WjisGTk4Xk=
+github.com/bytemare/hash2curve v0.3.1-0.20241029002722-6917d1f78dda h1:kMhrVX5K6usVsOPkbKNo/9D7DOYltOmhlEgdYFzG1Ug=
+github.com/bytemare/hash2curve v0.3.1-0.20241029002722-6917d1f78dda/go.mod h1:nCMz//0hZY4/JPmG6mdNkzI9UPa6NjiWunlaO+ANrTs=
 github.com/casbin/casbin/v2 v2.1.2/go.mod h1:YcPU1XXisHhLzuxH9coDNf2FbKpjGlbCg3n9yuLkIJQ=
 github.com/cenkalti/backoff v2.2.1+incompatible h1:tNowT99t7UNflLxfYYSlKYsBpXdEet03Pg2g16Swow4=
 github.com/cenkalti/backoff v2.2.1+incompatible/go.mod h1:90ReRw6GdpyfrHakVjL/QHaoyV4aDUVVkXQJJJ3NXXM=
@@ -1256,8 +1260,8 @@ golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de/go.mod h1:LzIPMQfyMNhhGPh
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.7.0/go.mod h1:pYwdfH91IfpZVANVyUOhSIPZaFoJGxTFbZhFTx+dXZU=
 golang.org/x/crypto v0.9.0/go.mod h1:yrmDGqONDYtNj3tH8X9dzUun2m2lzPa9ngI6/RUPGR0=
-golang.org/x/crypto v0.26.0 h1:RrRspgV4mU+YwB4FYnuBoKsUapNIL5cohGAmSH3azsw=
-golang.org/x/crypto v0.26.0/go.mod h1:GY7jblb9wI+FOo5y8/S2oY4zWP07AkOJ4+jxCqdqn54=
+golang.org/x/crypto v0.28.0 h1:GBDwsMXVQi34v5CCYUm2jkJvu4cbtru2U4TN2PSyQnw=
+golang.org/x/crypto v0.28.0/go.mod h1:rmgy+3RHxRZMyY0jjAJShp2zgEdOqj2AO7U0pYmeQ7U=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@@ -1518,8 +1522,8 @@ golang.org/x/term v0.1.0/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
 golang.org/x/term v0.6.0/go.mod h1:m6U89DPEgQRMq3DNkDClhWw02AUbt2daBVO4cn4Hv9U=
 golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
-golang.org/x/term v0.23.0 h1:F6D4vR+EHoL9/sWAWgAR1H2DcHr4PareCbAaCo1RpuU=
-golang.org/x/term v0.23.0/go.mod h1:DgV24QBUrK6jhZXl+20l6UWznPlwAHm1Q1mGHtydmSk=
+golang.org/x/term v0.25.0 h1:WtHI/ltw4NvSUig5KARz9h521QvRC8RmF/cuYqifU24=
+golang.org/x/term v0.25.0/go.mod h1:RPyXicDX+6vLxogjjRxjgD2TKtmAO6NZBsBRfrOLu7M=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -1534,8 +1538,8 @@ golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 golang.org/x/text v0.8.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
 golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
-golang.org/x/text v0.17.0 h1:XtiM5bkSOt+ewxlOE/aE/AKEHibwj/6gvWMl9Rsh0Qc=
-golang.org/x/text v0.17.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
+golang.org/x/text v0.19.0 h1:kTxAhCbGbxhK0IwgSKiMO5awPoDQ0RpfiVYBfK860YM=
+golang.org/x/text v0.19.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
 golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=

x/lending/types/taproot.go

@@ -3,20 +3,34 @@ package types
 import (
 	"encoding/hex"
 
-	sdk "github.com/cosmos/cosmos-sdk/types"
+	h2c "github.com/bytemare/hash2curve/secp256k1"
 
+	"github.com/btcsuite/btcd/btcec/v2"
 	"github.com/btcsuite/btcd/btcutil"
 	"github.com/btcsuite/btcd/chaincfg"
 	"github.com/btcsuite/btcd/txscript"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+
+	"github.com/sideprotocol/side/crypto/adaptor"
+	"github.com/sideprotocol/side/crypto/hash"
+	"github.com/sideprotocol/side/x/dlc/types"
 )
 
+// HashLoanSecret hashes the given secret
+// Assume that the secret is a valid hex string
 func HashLoanSecret(secret string) string {
-	// Todo later
-	return secret
+	secretBytes, _ := hex.DecodeString(secret)
+
+	return hex.EncodeToString(hash.Sha256(secretBytes))
 }
 
+// AdaptorPoint gets the corresponding adaptor point from the given secret
+// Assume that the secret is a valid hex string
 func AdaptorPoint(secret string) string {
-	return secret
+	secretBytes, _ := hex.DecodeString(secret)
+
+	return hex.EncodeToString(adaptor.SecretToPubKey(secretBytes))
 }
 
 func GetTaprootAddress(script []byte) (*btcutil.AddressTaproot, error) {
@@ -103,8 +117,9 @@ func createTaprootAddress(branches [][]byte, params *chaincfg.Params) (string, e
 	if err != nil {
 		return "", err
 	}
+
 	// Derive Taproot output key
-	taprootPubKey := txscript.ComputeTaprootOutputKey(nil, scriptRoot)
+	taprootPubKey := txscript.ComputeTaprootOutputKey(GetInternalKey(), scriptRoot)
 	// Generate Taproot address
 	address, err := btcutil.NewAddressTaproot(taprootPubKey.SerializeCompressed(), params)
 	if err != nil {
@@ -138,3 +153,18 @@ func CreateVaultAddress(borrowerPubkey string, dcaPubkey string, loanSecretHash
 	}
 	return taprootAddress, nil
 }
+
+// GetInternalKey gets the pub key used for taproot address generation
+// Generated by hashToCurve("lending") for now
+func GetInternalKey() *btcec.PublicKey {
+	input := types.ModuleName
+	domain := "side.lending.vault"
+
+	p := h2c.HashToCurve([]byte(input), []byte(domain))
+
+	var X, Y btcec.FieldVal
+	X.SetByteSlice(p.X.Bytes())
+	Y.SetByteSlice(p.Y.Bytes())
+
+	return btcec.NewPublicKey(&X, &Y)
+}