From 0ffe703c9e94666cf49d9f29469f33206dfc49af Mon Sep 17 00:00:00 2001
From: ciripel <37701673+ciripel@users.noreply.github.com>
Date: Thu, 15 Sep 2022 17:48:29 +0300
Subject: [PATCH] Subtask/11 implement ethereum signing (#12)

---
 CHANGELOG.md                                  |  2 +
 .../integration_tests/on_emulator_test.dart   | 48 ++++++++++++
 example/pubspec.lock                          | 73 ++++++++++++-------
 lib/sio_core_light.dart                       |  1 +
 lib/src/signing.dart                          | 53 ++++++++++++++
 pubspec.yaml                                  |  3 +-
 6 files changed, 153 insertions(+), 27 deletions(-)
 create mode 100644 lib/src/signing.dart

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a0262fd..fced33f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,5 @@
+## 1.1.3
+* Implement Ethereum message signing
 ## 1.1.2
 * Fix: `Transaction` arguments non null-able
 ## 1.1.1
diff --git a/example/integration_tests/on_emulator_test.dart b/example/integration_tests/on_emulator_test.dart
index 119ce5e..7affd45 100644
--- a/example/integration_tests/on_emulator_test.dart
+++ b/example/integration_tests/on_emulator_test.dart
@@ -1,4 +1,5 @@
 import 'dart:convert';
+import 'dart:typed_data';
 
 import 'package:bs58/bs58.dart';
 import 'package:convert/convert.dart';
@@ -439,4 +440,51 @@ void main() {
       });
     });
   });
+
+  group('Ethereum Signing - ', () {
+    test('Test typeData return correct signature', () {
+      expect(
+          EthSign.typedData(
+            wallet: wallet,
+            networkId: TWCoinType.TWCoinTypeEthereum,
+            jsonData:
+                '{"types":{"EIP712Domain":[{"name":"name","type":"string"},{"name":"version","type":"string"},{"name":"verifyingContract","type":"address"}],"RelayRequest":[{"name":"target","type":"address"},{"name":"encodedFunction","type":"bytes"},{"name":"gasData","type":"GasData"},{"name":"relayData","type":"RelayData"}],"GasData":[{"name":"gasLimit","type":"uint256"},{"name":"gasPrice","type":"uint256"},{"name":"pctRelayFee","type":"uint256"},{"name":"baseRelayFee","type":"uint256"}],"RelayData":[{"name":"senderAddress","type":"address"},{"name":"senderNonce","type":"uint256"},{"name":"relayWorker","type":"address"},{"name":"paymaster","type":"address"}]},"domain":{"name":"GSN Relayed Transaction","version":"1","chainId":42,"verifyingContract":"0x6453D37248Ab2C16eBd1A8f782a2CBC65860E60B"},"primaryType":"RelayRequest","message":{"target":"0x9cf40ef3d1622efe270fe6fe720585b4be4eeeff","encodedFunction":"0xa9059cbb0000000000000000000000002e0d94754b348d208d64d52d78bcd443afa9fa520000000000000000000000000000000000000000000000000000000000000007","gasData":{"gasLimit":"39507","gasPrice":"1700000000","pctRelayFee":"70","baseRelayFee":"0"},"relayData":{"senderAddress":"0x22d491bde2303f2f43325b2108d26f1eaba1e32b","senderNonce":"3","relayWorker":"0x3baee457ad824c94bd3953183d725847d023a2cf","paymaster":"0x957F270d45e9Ceca5c5af2b49f1b5dC1Abb0421c"}}}',
+          ),
+          equals(
+              '0x6ee63a1fcfcd81c6d8c168a63e27eda62bf663495729fb3b2ad59ded9c1e41703a3f3597c4d1564c4ef0f56acef83b024af4a13099f4ebf1c608714736af4b5c1b'));
+    });
+    test('Test personalTypeData return correct signature', () {
+      expect(
+          EthSign.personalTypedData(
+            wallet: wallet,
+            networkId: TWCoinType.TWCoinTypeEthereum,
+            jsonData:
+                '{"types":{"EIP712Domain":[{"name":"name","type":"string"},{"name":"version","type":"string"},{"name":"verifyingContract","type":"address"}],"RelayRequest":[{"name":"target","type":"address"},{"name":"encodedFunction","type":"bytes"},{"name":"gasData","type":"GasData"},{"name":"relayData","type":"RelayData"}],"GasData":[{"name":"gasLimit","type":"uint256"},{"name":"gasPrice","type":"uint256"},{"name":"pctRelayFee","type":"uint256"},{"name":"baseRelayFee","type":"uint256"}],"RelayData":[{"name":"senderAddress","type":"address"},{"name":"senderNonce","type":"uint256"},{"name":"relayWorker","type":"address"},{"name":"paymaster","type":"address"}]},"domain":{"name":"GSN Relayed Transaction","version":"1","chainId":42,"verifyingContract":"0x6453D37248Ab2C16eBd1A8f782a2CBC65860E60B"},"primaryType":"RelayRequest","message":{"target":"0x9cf40ef3d1622efe270fe6fe720585b4be4eeeff","encodedFunction":"0xa9059cbb0000000000000000000000002e0d94754b348d208d64d52d78bcd443afa9fa520000000000000000000000000000000000000000000000000000000000000007","gasData":{"gasLimit":"39507","gasPrice":"1700000000","pctRelayFee":"70","baseRelayFee":"0"},"relayData":{"senderAddress":"0x22d491bde2303f2f43325b2108d26f1eaba1e32b","senderNonce":"3","relayWorker":"0x3baee457ad824c94bd3953183d725847d023a2cf","paymaster":"0x957F270d45e9Ceca5c5af2b49f1b5dC1Abb0421c"}}}',
+          ),
+          equals(
+              '0xe742241a8d26e68ba86b854783bba9e8898996776788945a6ebbc6173a741ebb553ce9f41805b7815041dda4587c374591291a07473b9ae7050254ce2f7464ce1c'));
+    });
+    test('Test message return correct signature', () {
+      expect(
+          EthSign.message(
+            wallet: wallet,
+            networkId: TWCoinType.TWCoinTypeEthereum,
+            message: Uint8List.fromList(hex.decode(
+                'f737d8ba29fa34adf29b88785edca25c873d6fb2eaa4e77394cab27131fa3284')),
+          ),
+          equals(
+              '0xce929bf4483308f0e23752d43cb45def3bfafefdaba1b328d8121969ac303fd955acc4dd5520f585ee3691e04e0917f99360fa24a8280805ff25aa879fb83ae81c'));
+    });
+    test('Test personalMessage return correct signature', () {
+      expect(
+          EthSign.personalMessage(
+            wallet: wallet,
+            networkId: TWCoinType.TWCoinTypeEthereum,
+            message: Uint8List.fromList(hex.decode(
+                '4d7920656d61696c206973206a6f686e40646f652e636f6d202d205468752c2031352053657020323032322031333a30383a313520474d54')),
+          ),
+          equals(
+              '0x2913768a701ea3bea19b5d61d4b70758bf6b805869dea9425edc18e2efa2aa5c61add9bef273d29b4633972a1f35cc5efec23d7c8aeab358efedc2024d555bb01b'));
+    });
+  });
 }
diff --git a/example/pubspec.lock b/example/pubspec.lock
index b5a3689..353010d 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -21,7 +21,7 @@ packages:
       name: archive
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.1.11"
+    version: "3.3.0"
   args:
     dependency: transitive
     description:
@@ -35,7 +35,7 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.8.2"
+    version: "2.9.0"
   base_x:
     dependency: transitive
     description:
@@ -57,27 +57,27 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.0.2"
-  characters:
+  buffer:
     dependency: transitive
     description:
-      name: characters
+      name: buffer
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
-  charcode:
+    version: "1.1.1"
+  characters:
     dependency: transitive
     description:
-      name: charcode
+      name: characters
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.1"
+    version: "1.2.1"
   clock:
     dependency: transitive
     description:
       name: clock
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.1.1"
   collection:
     dependency: transitive
     description:
@@ -98,14 +98,14 @@ packages:
       name: coverage
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "1.5.0"
   crypto:
     dependency: transitive
     description:
       name: crypto
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.0.1"
+    version: "3.0.2"
   cupertino_icons:
     dependency: "direct main"
     description:
@@ -113,13 +113,27 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.0.5"
+  equatable:
+    dependency: transitive
+    description:
+      name: equatable
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.5"
+  eth_sig_util:
+    dependency: transitive
+    description:
+      name: eth_sig_util
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.0.9"
   fake_async:
     dependency: transitive
     description:
       name: fake_async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0"
+    version: "1.3.1"
   ffi:
     dependency: transitive
     description:
@@ -235,21 +249,21 @@ packages:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.11"
+    version: "0.12.12"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.4"
+    version: "0.1.5"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.7.0"
+    version: "1.8.0"
   mime:
     dependency: transitive
     description:
@@ -277,7 +291,7 @@ packages:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.1"
+    version: "1.8.2"
   platform:
     dependency: transitive
     description:
@@ -292,6 +306,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.2"
+  pointycastle:
+    dependency: transitive
+    description:
+      name: pointycastle
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.6.2"
   pool:
     dependency: transitive
     description:
@@ -354,7 +375,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "1.1.2"
+    version: "1.1.3"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -380,7 +401,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.2"
+    version: "1.9.0"
   stack_trace:
     dependency: transitive
     description:
@@ -401,42 +422,42 @@ packages:
       name: string_scanner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.1.1"
   sync_http:
     dependency: transitive
     description:
       name: sync_http
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.3.0"
+    version: "0.3.1"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "1.2.1"
   test:
     dependency: "direct dev"
     description:
       name: test
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.21.1"
+    version: "1.21.4"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.9"
+    version: "0.4.12"
   test_core:
     dependency: transitive
     description:
       name: test_core
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.13"
+    version: "0.4.16"
   trust_wallet_core_lib:
     dependency: "direct main"
     description:
@@ -450,7 +471,7 @@ packages:
       name: typed_data
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0"
+    version: "1.3.1"
   vector_math:
     dependency: transitive
     description:
@@ -464,7 +485,7 @@ packages:
       name: vm_service
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "8.2.2"
+    version: "9.0.0"
   watcher:
     dependency: transitive
     description:
diff --git a/lib/sio_core_light.dart b/lib/sio_core_light.dart
index 7b128aa..cc43863 100644
--- a/lib/sio_core_light.dart
+++ b/lib/sio_core_light.dart
@@ -2,4 +2,5 @@ export 'src/build_transaction.dart';
 export 'src/exceptions.dart';
 export 'src/mnemonic.dart';
 export 'src/networks_groups.dart';
+export 'src/signing.dart';
 export 'src/utils.dart';
diff --git a/lib/src/signing.dart b/lib/src/signing.dart
new file mode 100644
index 0000000..4794918
--- /dev/null
+++ b/lib/src/signing.dart
@@ -0,0 +1,53 @@
+import 'dart:typed_data';
+
+import 'package:eth_sig_util/eth_sig_util.dart';
+import 'package:trust_wallet_core_lib/trust_wallet_core_lib.dart';
+
+class EthSign {
+  static String typedData({
+    required HDWallet wallet,
+    required int networkId,
+    required String jsonData,
+    TypedDataVersion version = TypedDataVersion.V4,
+  }) {
+    return EthSigUtil.signTypedData(
+        privateKeyInBytes: wallet.getKeyForCoin(networkId).data(),
+        jsonData: jsonData,
+        version: version);
+  }
+
+  static String personalTypedData({
+    required HDWallet wallet,
+    required int networkId,
+    required String jsonData,
+    TypedDataVersion version = TypedDataVersion.V4,
+  }) {
+    return EthSigUtil.signPersonalTypedData(
+      privateKeyInBytes: wallet.getKeyForCoin(networkId).data(),
+      jsonData: jsonData,
+      version: version,
+    );
+  }
+
+  static String message({
+    required HDWallet wallet,
+    required int networkId,
+    required Uint8List message,
+  }) {
+    return EthSigUtil.signMessage(
+      privateKeyInBytes: wallet.getKeyForCoin(networkId).data(),
+      message: message,
+    );
+  }
+
+  static String personalMessage({
+    required HDWallet wallet,
+    required int networkId,
+    required Uint8List message,
+  }) {
+    return EthSigUtil.signPersonalMessage(
+      privateKeyInBytes: wallet.getKeyForCoin(networkId).data(),
+      message: message,
+    );
+  }
+}
diff --git a/pubspec.yaml b/pubspec.yaml
index 00e66fa..749cf0b 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: sio_core_light
 description: Simplio wallet core library for building blockchain transactions, developed in Dart, can be used in Flutter framework.
-version: 1.1.2
+version: 1.1.3
 repository: https://github.com/SimplioOfficial/sio_core_light
 
 environment:
@@ -9,6 +9,7 @@ environment:
 
 dependencies:
   convert: ^3.0.2
+  eth_sig_util: ^0.0.9
   fixnum: ^1.0.1
   flutter:
     sdk: flutter