sign message ext

intentv1/intent.gen.ts

@@ -1,5 +1,5 @@
 /* eslint-disable */
-// sequence-waas-intents v0.1.0 b4f2c5263bf9e85831646dacc7ac913b72430819
+// sequence-waas-intents v0.1.0 aa1ecacec8e54e06aeffbf733fbbad763d533fcb
 // --
 // Code generated by [email protected] with typescript generator. DO NOT EDIT.
 //
@@ -12,7 +12,7 @@ export const WebRPCVersion = "v1"
 export const WebRPCSchemaVersion = "v0.1.0"
 
 // Schema hash generated from your RIDL schema
-export const WebRPCSchemaHash = "b4f2c5263bf9e85831646dacc7ac913b72430819"
+export const WebRPCSchemaHash = "aa1ecacec8e54e06aeffbf733fbbad763d533fcb"
 
 //
 // Types
@@ -64,7 +64,7 @@ export interface IntentDataGetSession {
   wallet: string
 }
 
-export interface IntentDataSign {
+export interface IntentDataSignMessage {
   network: string
   wallet: string
   message: string

intentv1/intent.ridl

@@ -23,7 +23,7 @@ struct Signature
 #  - finishValidateSession
 #  - listSessions
 #  - getSession
-#  - sign
+#  - signMessage
 #  - sendTransaction
 
 struct IntentDataOpenSession
@@ -51,7 +51,7 @@ struct IntentDataGetSession
   - sessionId: string
   - wallet: string
 
-struct IntentDataSign
+struct IntentDataSignMessage
   - network: string
   - wallet:  string
   - message: string

intentv1/intent_data_sign_message_ext.go

@@ -0,0 +1,48 @@
+package intents
+
+import (
+	"bytes"
+	"fmt"
+	"math/big"
+
+	"github.com/0xsequence/ethkit/go-ethereum/common"
+	"github.com/0xsequence/go-sequence"
+)
+
+func (p *IntentDataSignMessage) chainID() (*big.Int, error) {
+	n, ok := sequence.ParseHexOrDec(p.Network)
+	if !ok {
+		return nil, fmt.Errorf("invalid network id '%s'", p.Network)
+	}
+
+	return n, nil
+}
+
+func (p *IntentDataSignMessage) message() []byte {
+	return common.FromHex(p.Message)
+}
+
+func (p *IntentDataSignMessage) wallet() common.Address {
+	return common.HexToAddress(p.Wallet)
+}
+
+func (p *IntentDataSignMessage) subdigest() ([]byte, error) {
+	chainID, err := p.chainID()
+	if err != nil {
+		return nil, err
+	}
+
+	return sequence.SubDigest(chainID, p.wallet(), sequence.MessageDigest(p.message()))
+}
+
+// A SignMessagePacket (intent) *MUST* be mapped to a regular "SignMessage" Sequence action, this means that
+// it must adhere to the following rules:
+// - the subdigest must match `SubDigest(chainID, Wallet, Digest(Message))`
+func (p *IntentDataSignMessage) IsValidInterpretation(subdigest common.Hash) bool {
+	selfSubDigest, err := p.subdigest()
+	if err != nil {
+		return false
+	}
+
+	return bytes.Equal(selfSubDigest, subdigest[:])
+}

intentv1/intent_data_sign_message_ext_test.go

@@ -0,0 +1,67 @@
+package intents
+
+import (
+	"encoding/json"
+	"math/big"
+	"testing"
+	"time"
+
+	"github.com/0xsequence/ethkit/ethwallet"
+	"github.com/0xsequence/ethkit/go-ethereum/common"
+	"github.com/0xsequence/go-sequence"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestRecoverMessageIntent(t *testing.T) {
+	data := `{
+		"version": "1",
+		"name": "signMessage",
+		"issued": 0,
+		"expires": 0,
+		"data": {
+			"wallet": "0xD67FC48b298B09Ed3D03403d930769C527186c4e",
+			"network": "1",
+			"message": "0xdeadbeef"
+		},
+		"signatures": []
+	}`
+
+	intent := &Intent{}
+	err := json.Unmarshal([]byte(data), intent)
+	assert.Nil(t, err)
+
+	assert.Equal(t, "1", intent.Version)
+	assert.Equal(t, "signMessage", intent.Name)
+
+	hash, err := intent.Hash()
+	assert.Nil(t, err)
+	assert.NotNil(t, common.Bytes2Hex(hash))
+
+	intent.IssuedAt = uint64(time.Now().Unix())
+	intent.ExpiresAt = uint64(time.Now().Unix()) + 60
+
+	wallet, err := ethwallet.NewWalletFromRandomEntropy()
+	require.Nil(t, err)
+
+	session := NewSessionP256K1(wallet)
+
+	err = session.Sign(intent)
+	require.Nil(t, err)
+
+	intentTyped, err := NewIntentTypedFromIntent[IntentDataSignMessage](intent)
+	require.NoError(t, err)
+
+	signers := intent.Signers()
+	assert.Equal(t, 1, len(signers))
+	assert.Equal(t, "0x"+common.Bytes2Hex(append([]byte{0x00}, wallet.Address().Bytes()...)), signers[0])
+
+	subdigest, err := sequence.SubDigest(
+		big.NewInt(1),
+		common.HexToAddress("0xD67FC48b298B09Ed3D03403d930769C527186c4e"),
+		sequence.MessageDigest(common.Hex2Bytes("deadbeef")),
+	)
+
+	assert.Nil(t, err)
+	assert.True(t, intentTyped.Data.IsValidInterpretation(common.BytesToHash(subdigest)))
+}