Merge pull request #175 from ChainSafe/sign_verify_pk_webwallet

Sign Verify Private Key

Web3Unity/Prefabs/PrivateKey/SignVerifyPK.prefab

@@ -0,0 +1,45 @@
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Web3Unity/Prefabs/Wallet/SignVerifyWebWallet.prefab

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+%YAML 1.1
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Web3Unity/Prefabs/WebGL/SignVerifyExample.prefab

@@ -116,7 +116,7 @@ RectTransform:
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   m_AnchorMin: {x: 0.5, y: 0.5}
   m_AnchorMax: {x: 0.5, y: 0.5}
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+  m_AnchoredPosition: {x: 23, y: -13}
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@@ -225,7 +225,7 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 3c19034a790b61441adfd1dffc88b51c, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
-  message: hello
+  message: hello1
   textHashedMessage: {fileID: 7523017095230044065}
   textSignedHash: {fileID: 7303377407210195607}
   verifyAddress: {fileID: 6576852011596053091}
@@ -295,7 +295,7 @@ RectTransform:
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Web3Unity/Scripts/Library/Web3PrivateKey.cs

@@ -41,8 +41,7 @@ public static string Address(string _privateKey)
     public static string Sign(string _privateKey, string _message)
     {
         var signer = new EthereumMessageSigner();
-        EthECKey key = new EthECKey(_privateKey);
-        string signature = signer.EncodeUTF8AndSign(_message, new EthECKey(_privateKey));
+        string signature = signer.HashAndSign(_message, _privateKey);
         return signature;
     }
 }

Web3Unity/Scripts/Library/Web3Wallet.cs

@@ -1,5 +1,8 @@
 using System;
+using System.Runtime.InteropServices;
 using System.Threading.Tasks;
+using Nethereum.Hex.HexConvertors.Extensions;
+using Nethereum.Signer;
 using UnityEngine;
 using Nethereum.Util;
 
@@ -62,9 +65,9 @@ public static async Task<string> Sign(string _message)
 
     public static string Sha3(string _message)
     {
-        Sha3Keccack hasher = new Sha3Keccack();
-        string hash = hasher.CalculateHash(_message);
-        // 0x1c8aff950685c2ed4bc3174f3472287b56d9517b9c948127319a09a7a36deac8
-        return "0x" + hash;
+        var signer = new EthereumMessageSigner();
+        var hash = new Sha3Keccack().CalculateHash(_message).EnsureHexPrefix();
+        // 0x06b3dfaec148fb1bb2b066f10ec285e7c9bf402ab32aa78a5d38e34566810cd2
+        return  hash;
     }
 }

Web3Unity/Scripts/Library/WebGL/Web3GL.cs

@@ -169,5 +169,4 @@ public static int Network()
     }
 
 }
-
 #endif

Web3Unity/Scripts/Prefabs/Minter/MintWeb3Wallet.cs

@@ -8,25 +8,30 @@ public class MintWeb3Wallet : MonoBehaviour
 
     public string chain = "ethereum";
     public string network = "rinkeby"; // mainnet ropsten kovan rinkeby goerli
-    public string account = PlayerPrefs.GetString("Account");
+    public string account;
     public string to = "0x7259E32e35cf880aEACfbD412E7F4Baa8606e04c";
     public string cid = "QmXjWjjMU8r39UCEZ8483aNedwNRFRLvvV9kwq1GpCgthj";
     public string chainId = "4";
 
-
+    public void Start()
+    {
+        account = PlayerPrefs.GetString("Account");
+    }
+
     // Start is called before the first frame update
     public async void MintNFT()
     {
         CreateMintModel.Response nftResponse = await EVM.CreateMint(chain, network, account, to, cid);
         Debug.Log("NFT Response: " + nftResponse);
+        account = PlayerPrefs.GetString("Account");
         // connects to user's browser wallet (metamask) to send a transaction
         try
         {
             string response = await Web3Wallet.SendTransaction(chainId, nftResponse.tx.to, nftResponse.tx.value, nftResponse.tx.data, nftResponse.tx.gasLimit, nftResponse.tx.gasPrice);
+            print(response);
             Debug.Log(response);
         } catch (Exception e) {
             Debug.LogException(e, this);
         }
-
     }
 }

Web3Unity/Scripts/Prefabs/Minter/MintWebGL.cs

@@ -11,17 +11,22 @@ public class MintWebGL : MonoBehaviour
     // Start is called before the first frame update
     public string chain = "ethereum";
     public string network = "rinkeby"; // mainnet ropsten kovan rinkeby goerli
-    public string account = "0x148dC439Ffe10DF915f1DA14AA780A47A577709E";
+    public string account;
     public string to = "0x148dC439Ffe10DF915f1DA14AA780A47A577709E";
     public string cid = "QmXjWjjMU8r39UCEZ8483aNedwNRFRLvvV9kwq1GpCgthj";
-
-
+
+
+    public void Start()
+    {
+        account = PlayerPrefs.GetString("Account");
+    }
+
     public async void MintNFT()
     {
         CreateMintModel.Response nftResponse = await EVM.CreateMint(chain, network, account, to, cid);
         // connects to user's browser wallet (metamask) to send a transaction
         try
-        {
+        {   
                string response = await Web3GL.SendTransactionData(nftResponse.tx.to, nftResponse.tx.value, nftResponse.tx.gasPrice,nftResponse.tx.gasLimit, nftResponse.tx.data);
             print("Response: " + response);
         } catch (Exception e) {

Web3Unity/Scripts/Prefabs/PrivateKey/SignVerifyPK.cs

@@ -0,0 +1,36 @@
+using System.Collections;
+using System.Collections.Generic;
+using Nethereum.Hex.HexConvertors.Extensions;
+using UnityEngine;
+
+public class SignVerifyPK : MonoBehaviour
+{
+    // Start is called before the first frame update
+    async void Start()
+    {
+        var privateKey = "ADD_PRIVATE_KEY";
+        string message = "hello";
+        var hashedMessage = Web3Wallet.Sha3(message);
+        Debug.Log("Hashed Message PK: " + hashedMessage);
+        string signature = Web3PrivateKey.Sign(privateKey, message);
+        print("Signature PK: " + signature);
+        // get account from private key
+        string account = Web3PrivateKey.Address(privateKey);
+        print("Account from PK: " + account);
+        string address = await EVM.Verify(hashedMessage, signature);
+        print("Address From Verify PK: " + address);
+
+        ParseSignatureFunction(signature);
+    }
+    // Update is called once per frame
+    public void ParseSignatureFunction(string sig)
+    {
+        string signature = sig;
+        string r = signature.Substring(0, 66).EnsureHexPrefix();
+        Debug.Log("PK R:" + r);
+        string s = signature.Substring(66, 64).EnsureHexPrefix();
+        Debug.Log("PK S: " + s);
+        int v = int.Parse(signature.Substring(130, 2), System.Globalization.NumberStyles.HexNumber);
+        Debug.Log("PK V: " + v);
+    }
+}

Web3Unity/Scripts/Prefabs/Wallet/SignVerifyWebWallet.cs

@@ -0,0 +1,28 @@
+using System.Text;
+using Nethereum.Signer;
+using Nethereum.Util;
+using UnityEngine;
+
+public class SignVerifyWebWallet : MonoBehaviour
+{
+    // Start is called before the first frame update
+    async void Start()
+    {
+        string message = "hello";
+        string signature = await Web3Wallet.Sign(message);
+        //verification
+        SignVerifySignature(signature, message);
+    }
+
+    public void SignVerifySignature(string signatureString, string originalMessage)
+    {
+        string msg = "\x19" + "Ethereum Signed Message:\n" + originalMessage.Length + originalMessage;
+        byte[] msgHash = new Sha3Keccack().CalculateHash(Encoding.UTF8.GetBytes(msg));
+        EthECDSASignature signature = MessageSigner.ExtractEcdsaSignature(signatureString);
+        EthECKey key = EthECKey.RecoverFromSignature(signature, msgHash);
+
+        bool isValid = key.Verify(msgHash, signature);
+        Debug.Log("Address Returned: " + key.GetPublicAddress());
+        Debug.Log("Is Valid: " + isValid);
+    }
+}