From 53e1882fa73d974c962fba020bb67191bbbf3d12 Mon Sep 17 00:00:00 2001
From: Alex Glazoff <poduniglazov@gmail.com>
Date: Fri, 11 Aug 2023 05:47:58 +0100
Subject: [PATCH 1/6] Two files was added by me. logs.js used to generate main
 account data. accounts_array used to push and get any account info from
 accounts_array

---
 server/index.js                  |  5 -----
 server/package.json              |  3 +++
 server/scripts/accounts_array.js | 18 ++++++++++++++++++
 server/scripts/logs.js           | 31 +++++++++++++++++++++++++++++++
 4 files changed, 52 insertions(+), 5 deletions(-)
 create mode 100644 server/scripts/accounts_array.js
 create mode 100644 server/scripts/logs.js

diff --git a/server/index.js b/server/index.js
index 3dbd053b..4cb962ee 100644
--- a/server/index.js
+++ b/server/index.js
@@ -6,11 +6,6 @@ const port = 3042;
 app.use(cors());
 app.use(express.json());
 
-const balances = {
-  "0x1": 100,
-  "0x2": 50,
-  "0x3": 75,
-};
 
 app.get("/balance/:address", (req, res) => {
   const { address } = req.params;
diff --git a/server/package.json b/server/package.json
index c03b40a9..ccb3059c 100644
--- a/server/package.json
+++ b/server/package.json
@@ -9,8 +9,11 @@
   "keywords": [],
   "author": "",
   "license": "ISC",
+  "type": "module",
   "dependencies": {
     "cors": "^2.8.5",
+    "ethereum-cryptography": "^2.1.2",
     "express": "^4.18.1"
   }
+  
 }
diff --git a/server/scripts/accounts_array.js b/server/scripts/accounts_array.js
new file mode 100644
index 00000000..f629b1fe
--- /dev/null
+++ b/server/scripts/accounts_array.js
@@ -0,0 +1,18 @@
+import {AddressConfig} from "./logs.js"
+
+export let users = [];
+
+
+    export function usersArrayLoop(){
+        for(var i =0;i<10;i++){
+        users.push({id:i,
+            address:AddressConfig.addressGen()
+            ,balance:AddressConfig.balanceLog()
+            ,private:AddressConfig.privatKeyGen()
+        ,public:AddressConfig.publicKeyGen()});     
+        }     
+        return users[0];
+    }
+      
+
+ console.log(usersArrayLoop());
diff --git a/server/scripts/logs.js b/server/scripts/logs.js
new file mode 100644
index 00000000..ba351ebc
--- /dev/null
+++ b/server/scripts/logs.js
@@ -0,0 +1,31 @@
+import { secp256k1 } from "ethereum-cryptography/secp256k1.js";
+import { toHex } from "ethereum-cryptography/utils.js";
+import { getRandomBytesSync } from "ethereum-cryptography/random.js";
+
+export const AddressConfig = {
+     privatKeyGen (privateKey){
+        return privateKey = toHex(secp256k1.utils.randomPrivateKey());
+    },
+     addressGen (address){
+        return address = toHex(getRandomBytesSync(20));
+    },
+    balanceLog (){
+        return 100;
+    },
+    publicKeyGen (publicKey){
+        return publicKey = toHex(secp256k1.getPublicKey(this.privatKeyGen()));
+    }
+
+}
+export default class bebra{
+    constructor(a){
+    this.a = a;
+    }
+}
+
+    //  console.log(AddressConfig.addressGen());
+    //  console.log(AddressConfig.balanceLog());
+    //  console.log(AddressConfig.privatKeyGen());
+    //  console.log(AddressConfig.publicKeyGen());
+
+

From b3f76800868902a3815f13d51e6305d4c0db8ed5 Mon Sep 17 00:00:00 2001
From: Alex Glazoff <poduniglazov@gmail.com>
Date: Fri, 11 Aug 2023 21:22:50 +0100
Subject: [PATCH 2/6] config and show address by button

---
 client/package-lock.json | 181 ++++++++++++++++++++++++-
 client/package.json      |   4 +-
 client/src/LogInPage.jsx |  37 ++++++
 client/src/Wallet.jsx    |   1 +
 client/src/main.jsx      |   5 +-
 server/index.js          |   6 +-
 server/package-lock.json | 276 ++++++++++++++++++++++++++++++++++++++-
 server/package.json      |   6 +-
 server/scripts/logs.js   |   2 +-
 9 files changed, 506 insertions(+), 12 deletions(-)
 create mode 100644 client/src/LogInPage.jsx

diff --git a/client/package-lock.json b/client/package-lock.json
index 3cf61093..46ebd929 100644
--- a/client/package-lock.json
+++ b/client/package-lock.json
@@ -9,8 +9,10 @@
       "version": "0.0.0",
       "dependencies": {
         "axios": "^0.27.2",
+        "ethereum-cryptography": "^2.1.2",
         "react": "^18.2.0",
-        "react-dom": "^18.2.0"
+        "react-dom": "^18.2.0",
+        "react-router-dom": "^6.15.0"
       },
       "devDependencies": {
         "@types/react": "^18.0.17",
@@ -517,6 +519,72 @@
         "@jridgewell/sourcemap-codec": "^1.4.10"
       }
     },
+    "node_modules/@noble/curves": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@noble/curves/-/curves-1.1.0.tgz",
+      "integrity": "sha512-091oBExgENk/kGj3AZmtBDMpxQPDtxQABR2B9lb1JbVTs6ytdzZNwvhxQ4MWasRNEzlbEH8jCWFCwhF/Obj5AA==",
+      "dependencies": {
+        "@noble/hashes": "1.3.1"
+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
+    "node_modules/@noble/hashes": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/@noble/hashes/-/hashes-1.3.1.tgz",
+      "integrity": "sha512-EbqwksQwz9xDRGfDST86whPBgM65E0OH/pCgqW0GBVzO22bNE+NuIbeTb714+IfSjU3aRk47EUvXIb5bTsenKA==",
+      "engines": {
+        "node": ">= 16"
+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
+    "node_modules/@remix-run/router": {
+      "version": "1.8.0",
+      "resolved": "https://registry.npmjs.org/@remix-run/router/-/router-1.8.0.tgz",
+      "integrity": "sha512-mrfKqIHnSZRyIzBcanNJmVQELTnX+qagEDlcKO90RgRBVOZGSGvZKeDihTRfWcqoDn5N/NkUcwWTccnpN18Tfg==",
+      "engines": {
+        "node": ">=14.0.0"
+      }
+    },
+    "node_modules/@scure/base": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/@scure/base/-/base-1.1.1.tgz",
+      "integrity": "sha512-ZxOhsSyxYwLJj3pLZCefNitxsj093tb2vq90mp2txoYeBqbcjDjqFhyM8eUjq/uFm6zJ+mUuqxlS2FkuSY1MTA==",
+      "funding": [
+        {
+          "type": "individual",
+          "url": "https://paulmillr.com/funding/"
+        }
+      ]
+    },
+    "node_modules/@scure/bip32": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/@scure/bip32/-/bip32-1.3.1.tgz",
+      "integrity": "sha512-osvveYtyzdEVbt3OfwwXFr4P2iVBL5u1Q3q4ONBfDY/UpOuXmOlbgwc1xECEboY8wIays8Yt6onaWMUdUbfl0A==",
+      "dependencies": {
+        "@noble/curves": "~1.1.0",
+        "@noble/hashes": "~1.3.1",
+        "@scure/base": "~1.1.0"
+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
+    "node_modules/@scure/bip39": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/@scure/bip39/-/bip39-1.2.1.tgz",
+      "integrity": "sha512-Z3/Fsz1yr904dduJD0NpiyRHhRYHdcnyh73FZWiV+/qhWi83wNJ3NWolYqCEN+ZWsUz2TWwajJggcRE9r1zUYg==",
+      "dependencies": {
+        "@noble/hashes": "~1.3.0",
+        "@scure/base": "~1.1.0"
+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
     "node_modules/@types/prop-types": {
       "version": "15.7.5",
       "resolved": "https://registry.npmjs.org/@types/prop-types/-/prop-types-15.7.5.tgz",
@@ -1178,6 +1246,17 @@
         "node": ">=0.8.0"
       }
     },
+    "node_modules/ethereum-cryptography": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/ethereum-cryptography/-/ethereum-cryptography-2.1.2.tgz",
+      "integrity": "sha512-Z5Ba0T0ImZ8fqXrJbpHcbpAvIswRte2wGNR/KePnu8GbbvgJ47lMxT/ZZPG6i9Jaht4azPDop4HaM00J0J59ug==",
+      "dependencies": {
+        "@noble/curves": "1.1.0",
+        "@noble/hashes": "1.3.1",
+        "@scure/bip32": "1.3.1",
+        "@scure/bip39": "1.2.1"
+      }
+    },
     "node_modules/fill-range": {
       "version": "7.0.1",
       "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.0.1.tgz",
@@ -1537,6 +1616,36 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/react-router": {
+      "version": "6.15.0",
+      "resolved": "https://registry.npmjs.org/react-router/-/react-router-6.15.0.tgz",
+      "integrity": "sha512-NIytlzvzLwJkCQj2HLefmeakxxWHWAP+02EGqWEZy+DgfHHKQMUoBBjUQLOtFInBMhWtb3hiUy6MfFgwLjXhqg==",
+      "dependencies": {
+        "@remix-run/router": "1.8.0"
+      },
+      "engines": {
+        "node": ">=14.0.0"
+      },
+      "peerDependencies": {
+        "react": ">=16.8"
+      }
+    },
+    "node_modules/react-router-dom": {
+      "version": "6.15.0",
+      "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-6.15.0.tgz",
+      "integrity": "sha512-aR42t0fs7brintwBGAv2+mGlCtgtFQeOzK0BM1/OiqEzRejOZtpMZepvgkscpMUnKb8YO84G7s3LsHnnDNonbQ==",
+      "dependencies": {
+        "@remix-run/router": "1.8.0",
+        "react-router": "6.15.0"
+      },
+      "engines": {
+        "node": ">=14.0.0"
+      },
+      "peerDependencies": {
+        "react": ">=16.8",
+        "react-dom": ">=16.8"
+      }
+    },
     "node_modules/readdirp": {
       "version": "3.6.0",
       "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-3.6.0.tgz",
@@ -2107,6 +2216,48 @@
         "@jridgewell/sourcemap-codec": "^1.4.10"
       }
     },
+    "@noble/curves": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@noble/curves/-/curves-1.1.0.tgz",
+      "integrity": "sha512-091oBExgENk/kGj3AZmtBDMpxQPDtxQABR2B9lb1JbVTs6ytdzZNwvhxQ4MWasRNEzlbEH8jCWFCwhF/Obj5AA==",
+      "requires": {
+        "@noble/hashes": "1.3.1"
+      }
+    },
+    "@noble/hashes": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/@noble/hashes/-/hashes-1.3.1.tgz",
+      "integrity": "sha512-EbqwksQwz9xDRGfDST86whPBgM65E0OH/pCgqW0GBVzO22bNE+NuIbeTb714+IfSjU3aRk47EUvXIb5bTsenKA=="
+    },
+    "@remix-run/router": {
+      "version": "1.8.0",
+      "resolved": "https://registry.npmjs.org/@remix-run/router/-/router-1.8.0.tgz",
+      "integrity": "sha512-mrfKqIHnSZRyIzBcanNJmVQELTnX+qagEDlcKO90RgRBVOZGSGvZKeDihTRfWcqoDn5N/NkUcwWTccnpN18Tfg=="
+    },
+    "@scure/base": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/@scure/base/-/base-1.1.1.tgz",
+      "integrity": "sha512-ZxOhsSyxYwLJj3pLZCefNitxsj093tb2vq90mp2txoYeBqbcjDjqFhyM8eUjq/uFm6zJ+mUuqxlS2FkuSY1MTA=="
+    },
+    "@scure/bip32": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/@scure/bip32/-/bip32-1.3.1.tgz",
+      "integrity": "sha512-osvveYtyzdEVbt3OfwwXFr4P2iVBL5u1Q3q4ONBfDY/UpOuXmOlbgwc1xECEboY8wIays8Yt6onaWMUdUbfl0A==",
+      "requires": {
+        "@noble/curves": "~1.1.0",
+        "@noble/hashes": "~1.3.1",
+        "@scure/base": "~1.1.0"
+      }
+    },
+    "@scure/bip39": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/@scure/bip39/-/bip39-1.2.1.tgz",
+      "integrity": "sha512-Z3/Fsz1yr904dduJD0NpiyRHhRYHdcnyh73FZWiV+/qhWi83wNJ3NWolYqCEN+ZWsUz2TWwajJggcRE9r1zUYg==",
+      "requires": {
+        "@noble/hashes": "~1.3.0",
+        "@scure/base": "~1.1.0"
+      }
+    },
     "@types/prop-types": {
       "version": "15.7.5",
       "resolved": "https://registry.npmjs.org/@types/prop-types/-/prop-types-15.7.5.tgz",
@@ -2497,6 +2648,17 @@
       "integrity": "sha512-vbRorB5FUQWvla16U8R/qgaFIya2qGzwDrNmCZuYKrbdSUMG6I1ZCGQRefkRVhuOkIGVne7BQ35DSfo1qvJqFg==",
       "dev": true
     },
+    "ethereum-cryptography": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/ethereum-cryptography/-/ethereum-cryptography-2.1.2.tgz",
+      "integrity": "sha512-Z5Ba0T0ImZ8fqXrJbpHcbpAvIswRte2wGNR/KePnu8GbbvgJ47lMxT/ZZPG6i9Jaht4azPDop4HaM00J0J59ug==",
+      "requires": {
+        "@noble/curves": "1.1.0",
+        "@noble/hashes": "1.3.1",
+        "@scure/bip32": "1.3.1",
+        "@scure/bip39": "1.2.1"
+      }
+    },
     "fill-range": {
       "version": "7.0.1",
       "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.0.1.tgz",
@@ -2738,6 +2900,23 @@
       "integrity": "sha512-wViHqhAd8OHeLS/IRMJjTSDHF3U9eWi62F/MledQGPdJGDhodXJ9PBLNGr6WWL7qlH12Mt3TyTpbS+hGXMjCzQ==",
       "dev": true
     },
+    "react-router": {
+      "version": "6.15.0",
+      "resolved": "https://registry.npmjs.org/react-router/-/react-router-6.15.0.tgz",
+      "integrity": "sha512-NIytlzvzLwJkCQj2HLefmeakxxWHWAP+02EGqWEZy+DgfHHKQMUoBBjUQLOtFInBMhWtb3hiUy6MfFgwLjXhqg==",
+      "requires": {
+        "@remix-run/router": "1.8.0"
+      }
+    },
+    "react-router-dom": {
+      "version": "6.15.0",
+      "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-6.15.0.tgz",
+      "integrity": "sha512-aR42t0fs7brintwBGAv2+mGlCtgtFQeOzK0BM1/OiqEzRejOZtpMZepvgkscpMUnKb8YO84G7s3LsHnnDNonbQ==",
+      "requires": {
+        "@remix-run/router": "1.8.0",
+        "react-router": "6.15.0"
+      }
+    },
     "readdirp": {
       "version": "3.6.0",
       "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-3.6.0.tgz",
diff --git a/client/package.json b/client/package.json
index f662261b..1d7501af 100644
--- a/client/package.json
+++ b/client/package.json
@@ -10,8 +10,10 @@
   },
   "dependencies": {
     "axios": "^0.27.2",
+    "ethereum-cryptography": "^2.1.2",
     "react": "^18.2.0",
-    "react-dom": "^18.2.0"
+    "react-dom": "^18.2.0",
+    "react-router-dom": "^6.15.0"
   },
   "devDependencies": {
     "@types/react": "^18.0.17",
diff --git a/client/src/LogInPage.jsx b/client/src/LogInPage.jsx
new file mode 100644
index 00000000..8e6fbf74
--- /dev/null
+++ b/client/src/LogInPage.jsx
@@ -0,0 +1,37 @@
+import App from "./App";
+import { useState } from "react";
+import {AddressConfig} from "../../server/scripts/logs.js"
+
+
+
+function LogIn(){
+
+    const [address, setAddress] = useState("");
+    const [showResult, setShowResult] = useState(false);
+
+    const getAddress = async( )=>{
+        try{
+            const generatedAddress = AddressConfig.addressGen();
+            setAddress(generatedAddress);
+            setShowResult(true);
+
+        }
+        catch(error){
+            console.error("Error generating address:",error);
+        }
+    };
+    return (
+
+        <form className="container login" onSubmit={event => event.preventDefault()}>
+          <h1>Log In</h1>
+    
+          <input type="button" className="button" value="Get the account address" onClick = {getAddress} />
+          <div className="addressOutput">Address: {address}</div> 
+          {showResult ? <App address={address} /> : null}
+        </form>
+      );
+      
+
+    }
+
+export default LogIn;
\ No newline at end of file
diff --git a/client/src/Wallet.jsx b/client/src/Wallet.jsx
index 8dde5242..c539fe4e 100644
--- a/client/src/Wallet.jsx
+++ b/client/src/Wallet.jsx
@@ -1,5 +1,6 @@
 import server from "./server";
 
+
 function Wallet({ address, setAddress, balance, setBalance }) {
   async function onChange(evt) {
     const address = evt.target.value;
diff --git a/client/src/main.jsx b/client/src/main.jsx
index a7c77000..acaa543b 100644
--- a/client/src/main.jsx
+++ b/client/src/main.jsx
@@ -1,9 +1,10 @@
 import React from "react";
 import ReactDOM from "react-dom/client";
-import App from "./App";
+//import App from "./App";
+import LogInPage from "./LogInPage.jsx";
 
 ReactDOM.createRoot(document.getElementById("root")).render(
   <React.StrictMode>
-    <App />
+    <LogInPage />
   </React.StrictMode>
 );
\ No newline at end of file
diff --git a/server/index.js b/server/index.js
index 4cb962ee..165ec4f4 100644
--- a/server/index.js
+++ b/server/index.js
@@ -1,10 +1,10 @@
-const express = require("express");
+import express, { json } from "express";
 const app = express();
-const cors = require("cors");
+import cors from "cors";
 const port = 3042;
 
 app.use(cors());
-app.use(express.json());
+app.use(json());
 
 
 app.get("/balance/:address", (req, res) => {
diff --git a/server/package-lock.json b/server/package-lock.json
index 612c6e2d..ef68f93e 100644
--- a/server/package-lock.json
+++ b/server/package-lock.json
@@ -10,7 +10,75 @@
       "license": "ISC",
       "dependencies": {
         "cors": "^2.8.5",
-        "express": "^4.18.1"
+        "ethereum-cryptography": "^2.1.2",
+        "express": "^4.18.1",
+        "react-router-dom": "^6.15.0"
+      }
+    },
+    "node_modules/@noble/curves": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@noble/curves/-/curves-1.1.0.tgz",
+      "integrity": "sha512-091oBExgENk/kGj3AZmtBDMpxQPDtxQABR2B9lb1JbVTs6ytdzZNwvhxQ4MWasRNEzlbEH8jCWFCwhF/Obj5AA==",
+      "dependencies": {
+        "@noble/hashes": "1.3.1"
+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
+    "node_modules/@noble/hashes": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/@noble/hashes/-/hashes-1.3.1.tgz",
+      "integrity": "sha512-EbqwksQwz9xDRGfDST86whPBgM65E0OH/pCgqW0GBVzO22bNE+NuIbeTb714+IfSjU3aRk47EUvXIb5bTsenKA==",
+      "engines": {
+        "node": ">= 16"
+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
+    "node_modules/@remix-run/router": {
+      "version": "1.8.0",
+      "resolved": "https://registry.npmjs.org/@remix-run/router/-/router-1.8.0.tgz",
+      "integrity": "sha512-mrfKqIHnSZRyIzBcanNJmVQELTnX+qagEDlcKO90RgRBVOZGSGvZKeDihTRfWcqoDn5N/NkUcwWTccnpN18Tfg==",
+      "engines": {
+        "node": ">=14.0.0"
+      }
+    },
+    "node_modules/@scure/base": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/@scure/base/-/base-1.1.1.tgz",
+      "integrity": "sha512-ZxOhsSyxYwLJj3pLZCefNitxsj093tb2vq90mp2txoYeBqbcjDjqFhyM8eUjq/uFm6zJ+mUuqxlS2FkuSY1MTA==",
+      "funding": [
+        {
+          "type": "individual",
+          "url": "https://paulmillr.com/funding/"
+        }
+      ]
+    },
+    "node_modules/@scure/bip32": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/@scure/bip32/-/bip32-1.3.1.tgz",
+      "integrity": "sha512-osvveYtyzdEVbt3OfwwXFr4P2iVBL5u1Q3q4ONBfDY/UpOuXmOlbgwc1xECEboY8wIays8Yt6onaWMUdUbfl0A==",
+      "dependencies": {
+        "@noble/curves": "~1.1.0",
+        "@noble/hashes": "~1.3.1",
+        "@scure/base": "~1.1.0"
+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
+    "node_modules/@scure/bip39": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/@scure/bip39/-/bip39-1.2.1.tgz",
+      "integrity": "sha512-Z3/Fsz1yr904dduJD0NpiyRHhRYHdcnyh73FZWiV+/qhWi83wNJ3NWolYqCEN+ZWsUz2TWwajJggcRE9r1zUYg==",
+      "dependencies": {
+        "@noble/hashes": "~1.3.0",
+        "@scure/base": "~1.1.0"
+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
       }
     },
     "node_modules/accepts": {
@@ -168,6 +236,17 @@
         "node": ">= 0.6"
       }
     },
+    "node_modules/ethereum-cryptography": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/ethereum-cryptography/-/ethereum-cryptography-2.1.2.tgz",
+      "integrity": "sha512-Z5Ba0T0ImZ8fqXrJbpHcbpAvIswRte2wGNR/KePnu8GbbvgJ47lMxT/ZZPG6i9Jaht4azPDop4HaM00J0J59ug==",
+      "dependencies": {
+        "@noble/curves": "1.1.0",
+        "@noble/hashes": "1.3.1",
+        "@scure/bip32": "1.3.1",
+        "@scure/bip39": "1.2.1"
+      }
+    },
     "node_modules/express": {
       "version": "4.18.1",
       "resolved": "https://registry.npmjs.org/express/-/express-4.18.1.tgz",
@@ -321,6 +400,24 @@
         "node": ">= 0.10"
       }
     },
+    "node_modules/js-tokens": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
+      "integrity": "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==",
+      "peer": true
+    },
+    "node_modules/loose-envify": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/loose-envify/-/loose-envify-1.4.0.tgz",
+      "integrity": "sha512-lyuxPGr/Wfhrlem2CL/UcnUc1zcqKAImBDzukY7Y5F/yQiNdko6+fRLevlw1HgMySw7f611UIY408EtxRSoK3Q==",
+      "peer": true,
+      "dependencies": {
+        "js-tokens": "^3.0.0 || ^4.0.0"
+      },
+      "bin": {
+        "loose-envify": "cli.js"
+      }
+    },
     "node_modules/media-typer": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
@@ -473,6 +570,61 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/react": {
+      "version": "18.2.0",
+      "resolved": "https://registry.npmjs.org/react/-/react-18.2.0.tgz",
+      "integrity": "sha512-/3IjMdb2L9QbBdWiW5e3P2/npwMBaU9mHCSCUzNln0ZCYbcfTsGbTJrU/kGemdH2IWmB2ioZ+zkxtmq6g09fGQ==",
+      "peer": true,
+      "dependencies": {
+        "loose-envify": "^1.1.0"
+      },
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/react-dom": {
+      "version": "18.2.0",
+      "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-18.2.0.tgz",
+      "integrity": "sha512-6IMTriUmvsjHUjNtEDudZfuDQUoWXVxKHhlEGSk81n4YFS+r/Kl99wXiwlVXtPBtJenozv2P+hxDsw9eA7Xo6g==",
+      "peer": true,
+      "dependencies": {
+        "loose-envify": "^1.1.0",
+        "scheduler": "^0.23.0"
+      },
+      "peerDependencies": {
+        "react": "^18.2.0"
+      }
+    },
+    "node_modules/react-router": {
+      "version": "6.15.0",
+      "resolved": "https://registry.npmjs.org/react-router/-/react-router-6.15.0.tgz",
+      "integrity": "sha512-NIytlzvzLwJkCQj2HLefmeakxxWHWAP+02EGqWEZy+DgfHHKQMUoBBjUQLOtFInBMhWtb3hiUy6MfFgwLjXhqg==",
+      "dependencies": {
+        "@remix-run/router": "1.8.0"
+      },
+      "engines": {
+        "node": ">=14.0.0"
+      },
+      "peerDependencies": {
+        "react": ">=16.8"
+      }
+    },
+    "node_modules/react-router-dom": {
+      "version": "6.15.0",
+      "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-6.15.0.tgz",
+      "integrity": "sha512-aR42t0fs7brintwBGAv2+mGlCtgtFQeOzK0BM1/OiqEzRejOZtpMZepvgkscpMUnKb8YO84G7s3LsHnnDNonbQ==",
+      "dependencies": {
+        "@remix-run/router": "1.8.0",
+        "react-router": "6.15.0"
+      },
+      "engines": {
+        "node": ">=14.0.0"
+      },
+      "peerDependencies": {
+        "react": ">=16.8",
+        "react-dom": ">=16.8"
+      }
+    },
     "node_modules/safe-buffer": {
       "version": "5.2.1",
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
@@ -497,6 +649,15 @@
       "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
       "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
     },
+    "node_modules/scheduler": {
+      "version": "0.23.0",
+      "resolved": "https://registry.npmjs.org/scheduler/-/scheduler-0.23.0.tgz",
+      "integrity": "sha512-CtuThmgHNg7zIZWAXi3AsyIzA3n4xx7aNyjwC2VJldO2LMVDhFK+63xGqq6CsJH4rTAt6/M+N4GhZiDYPx9eUw==",
+      "peer": true,
+      "dependencies": {
+        "loose-envify": "^1.1.0"
+      }
+    },
     "node_modules/send": {
       "version": "0.18.0",
       "resolved": "https://registry.npmjs.org/send/-/send-0.18.0.tgz",
@@ -611,6 +772,48 @@
     }
   },
   "dependencies": {
+    "@noble/curves": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@noble/curves/-/curves-1.1.0.tgz",
+      "integrity": "sha512-091oBExgENk/kGj3AZmtBDMpxQPDtxQABR2B9lb1JbVTs6ytdzZNwvhxQ4MWasRNEzlbEH8jCWFCwhF/Obj5AA==",
+      "requires": {
+        "@noble/hashes": "1.3.1"
+      }
+    },
+    "@noble/hashes": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/@noble/hashes/-/hashes-1.3.1.tgz",
+      "integrity": "sha512-EbqwksQwz9xDRGfDST86whPBgM65E0OH/pCgqW0GBVzO22bNE+NuIbeTb714+IfSjU3aRk47EUvXIb5bTsenKA=="
+    },
+    "@remix-run/router": {
+      "version": "1.8.0",
+      "resolved": "https://registry.npmjs.org/@remix-run/router/-/router-1.8.0.tgz",
+      "integrity": "sha512-mrfKqIHnSZRyIzBcanNJmVQELTnX+qagEDlcKO90RgRBVOZGSGvZKeDihTRfWcqoDn5N/NkUcwWTccnpN18Tfg=="
+    },
+    "@scure/base": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/@scure/base/-/base-1.1.1.tgz",
+      "integrity": "sha512-ZxOhsSyxYwLJj3pLZCefNitxsj093tb2vq90mp2txoYeBqbcjDjqFhyM8eUjq/uFm6zJ+mUuqxlS2FkuSY1MTA=="
+    },
+    "@scure/bip32": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/@scure/bip32/-/bip32-1.3.1.tgz",
+      "integrity": "sha512-osvveYtyzdEVbt3OfwwXFr4P2iVBL5u1Q3q4ONBfDY/UpOuXmOlbgwc1xECEboY8wIays8Yt6onaWMUdUbfl0A==",
+      "requires": {
+        "@noble/curves": "~1.1.0",
+        "@noble/hashes": "~1.3.1",
+        "@scure/base": "~1.1.0"
+      }
+    },
+    "@scure/bip39": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/@scure/bip39/-/bip39-1.2.1.tgz",
+      "integrity": "sha512-Z3/Fsz1yr904dduJD0NpiyRHhRYHdcnyh73FZWiV+/qhWi83wNJ3NWolYqCEN+ZWsUz2TWwajJggcRE9r1zUYg==",
+      "requires": {
+        "@noble/hashes": "~1.3.0",
+        "@scure/base": "~1.1.0"
+      }
+    },
     "accepts": {
       "version": "1.3.8",
       "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.8.tgz",
@@ -728,6 +931,17 @@
       "resolved": "https://registry.npmjs.org/etag/-/etag-1.8.1.tgz",
       "integrity": "sha512-aIL5Fx7mawVa300al2BnEE4iNvo1qETxLrPI/o05L7z6go7fCw1J6EQmbK4FmJ2AS7kgVF/KEZWufBfdClMcPg=="
     },
+    "ethereum-cryptography": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/ethereum-cryptography/-/ethereum-cryptography-2.1.2.tgz",
+      "integrity": "sha512-Z5Ba0T0ImZ8fqXrJbpHcbpAvIswRte2wGNR/KePnu8GbbvgJ47lMxT/ZZPG6i9Jaht4azPDop4HaM00J0J59ug==",
+      "requires": {
+        "@noble/curves": "1.1.0",
+        "@noble/hashes": "1.3.1",
+        "@scure/bip32": "1.3.1",
+        "@scure/bip39": "1.2.1"
+      }
+    },
     "express": {
       "version": "4.18.1",
       "resolved": "https://registry.npmjs.org/express/-/express-4.18.1.tgz",
@@ -848,6 +1062,21 @@
       "resolved": "https://registry.npmjs.org/ipaddr.js/-/ipaddr.js-1.9.1.tgz",
       "integrity": "sha512-0KI/607xoxSToH7GjN1FfSbLoU0+btTicjsQSWQlh/hZykN8KpmMf7uYwPW3R+akZ6R/w18ZlXSHBYXiYUPO3g=="
     },
+    "js-tokens": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
+      "integrity": "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==",
+      "peer": true
+    },
+    "loose-envify": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/loose-envify/-/loose-envify-1.4.0.tgz",
+      "integrity": "sha512-lyuxPGr/Wfhrlem2CL/UcnUc1zcqKAImBDzukY7Y5F/yQiNdko6+fRLevlw1HgMySw7f611UIY408EtxRSoK3Q==",
+      "peer": true,
+      "requires": {
+        "js-tokens": "^3.0.0 || ^4.0.0"
+      }
+    },
     "media-typer": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
@@ -952,6 +1181,42 @@
         "unpipe": "1.0.0"
       }
     },
+    "react": {
+      "version": "18.2.0",
+      "resolved": "https://registry.npmjs.org/react/-/react-18.2.0.tgz",
+      "integrity": "sha512-/3IjMdb2L9QbBdWiW5e3P2/npwMBaU9mHCSCUzNln0ZCYbcfTsGbTJrU/kGemdH2IWmB2ioZ+zkxtmq6g09fGQ==",
+      "peer": true,
+      "requires": {
+        "loose-envify": "^1.1.0"
+      }
+    },
+    "react-dom": {
+      "version": "18.2.0",
+      "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-18.2.0.tgz",
+      "integrity": "sha512-6IMTriUmvsjHUjNtEDudZfuDQUoWXVxKHhlEGSk81n4YFS+r/Kl99wXiwlVXtPBtJenozv2P+hxDsw9eA7Xo6g==",
+      "peer": true,
+      "requires": {
+        "loose-envify": "^1.1.0",
+        "scheduler": "^0.23.0"
+      }
+    },
+    "react-router": {
+      "version": "6.15.0",
+      "resolved": "https://registry.npmjs.org/react-router/-/react-router-6.15.0.tgz",
+      "integrity": "sha512-NIytlzvzLwJkCQj2HLefmeakxxWHWAP+02EGqWEZy+DgfHHKQMUoBBjUQLOtFInBMhWtb3hiUy6MfFgwLjXhqg==",
+      "requires": {
+        "@remix-run/router": "1.8.0"
+      }
+    },
+    "react-router-dom": {
+      "version": "6.15.0",
+      "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-6.15.0.tgz",
+      "integrity": "sha512-aR42t0fs7brintwBGAv2+mGlCtgtFQeOzK0BM1/OiqEzRejOZtpMZepvgkscpMUnKb8YO84G7s3LsHnnDNonbQ==",
+      "requires": {
+        "@remix-run/router": "1.8.0",
+        "react-router": "6.15.0"
+      }
+    },
     "safe-buffer": {
       "version": "5.2.1",
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
@@ -962,6 +1227,15 @@
       "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
       "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
     },
+    "scheduler": {
+      "version": "0.23.0",
+      "resolved": "https://registry.npmjs.org/scheduler/-/scheduler-0.23.0.tgz",
+      "integrity": "sha512-CtuThmgHNg7zIZWAXi3AsyIzA3n4xx7aNyjwC2VJldO2LMVDhFK+63xGqq6CsJH4rTAt6/M+N4GhZiDYPx9eUw==",
+      "peer": true,
+      "requires": {
+        "loose-envify": "^1.1.0"
+      }
+    },
     "send": {
       "version": "0.18.0",
       "resolved": "https://registry.npmjs.org/send/-/send-0.18.0.tgz",
diff --git a/server/package.json b/server/package.json
index ccb3059c..d2790322 100644
--- a/server/package.json
+++ b/server/package.json
@@ -3,17 +3,17 @@
   "version": "1.0.0",
   "description": "",
   "main": "index.js",
+  "type": "module",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "keywords": [],
   "author": "",
   "license": "ISC",
-  "type": "module",
   "dependencies": {
     "cors": "^2.8.5",
     "ethereum-cryptography": "^2.1.2",
-    "express": "^4.18.1"
+    "express": "^4.18.1",
+    "react-router-dom": "^6.15.0"
   }
-  
 }
diff --git a/server/scripts/logs.js b/server/scripts/logs.js
index ba351ebc..f6d7b2ed 100644
--- a/server/scripts/logs.js
+++ b/server/scripts/logs.js
@@ -7,7 +7,7 @@ export const AddressConfig = {
         return privateKey = toHex(secp256k1.utils.randomPrivateKey());
     },
      addressGen (address){
-        return address = toHex(getRandomBytesSync(20));
+        return address = "0x"+toHex(getRandomBytesSync(20));
     },
     balanceLog (){
         return 100;

From 98ff093a44db9a5ed083f3d719f43772485db250 Mon Sep 17 00:00:00 2001
From: Alex Glazoff <poduniglazov@gmail.com>
Date: Fri, 18 Aug 2023 00:11:53 +0100
Subject: [PATCH 3/6] a

---
 client/src/App.jsx                  | 19 +++---
 client/src/LogInPage.jsx            | 58 +++++++----------
 client/src/Transfer.jsx             | 69 ++++++++++++++------
 client/src/Wallet.jsx               | 97 +++++++++++++++++++++--------
 client/src/main.jsx                 |  6 +-
 server/index.js                     |  3 +-
 server/scripts/accounts_array.js    | 29 ++++-----
 server/scripts/balance_operation.js | 40 ++++++++++++
 8 files changed, 214 insertions(+), 107 deletions(-)
 create mode 100644 server/scripts/balance_operation.js

diff --git a/client/src/App.jsx b/client/src/App.jsx
index 7254c1fa..57c0eb9f 100644
--- a/client/src/App.jsx
+++ b/client/src/App.jsx
@@ -2,20 +2,21 @@ import Wallet from "./Wallet";
 import Transfer from "./Transfer";
 import "./App.scss";
 import { useState } from "react";
+import {LogInComponent} from "./LogInPage.jsx";
 
 function App() {
-  const [balance, setBalance] = useState(0);
-  const [address, setAddress] = useState("");
+  const [loggedInAddress, setLoggedInAddress] = useState(""); 
+  const [loggedInBalance, setLoggedInBalance] = useState(0);
 
+  const handleLogin = (address,balance) => {
+    setLoggedInAddress(address);
+    setLoggedInBalance(balance);
+  };
   return (
     <div className="app">
-      <Wallet
-        balance={balance}
-        setBalance={setBalance}
-        address={address}
-        setAddress={setAddress}
-      />
-      <Transfer setBalance={setBalance} address={address} />
+
+      <Wallet address={loggedInAddress} balance={loggedInBalance} />
+       <Transfer balance={loggedInBalance} address={loggedInAddress} />  
     </div>
   );
 }
diff --git a/client/src/LogInPage.jsx b/client/src/LogInPage.jsx
index 8e6fbf74..f782766b 100644
--- a/client/src/LogInPage.jsx
+++ b/client/src/LogInPage.jsx
@@ -1,37 +1,23 @@
-import App from "./App";
-import { useState } from "react";
-import {AddressConfig} from "../../server/scripts/logs.js"
-
-
-
-function LogIn(){
-
-    const [address, setAddress] = useState("");
-    const [showResult, setShowResult] = useState(false);
-
-    const getAddress = async( )=>{
-        try{
-            const generatedAddress = AddressConfig.addressGen();
-            setAddress(generatedAddress);
-            setShowResult(true);
-
-        }
-        catch(error){
-            console.error("Error generating address:",error);
-        }
-    };
-    return (
-
-        <form className="container login" onSubmit={event => event.preventDefault()}>
-          <h1>Log In</h1>
-    
-          <input type="button" className="button" value="Get the account address" onClick = {getAddress} />
-          <div className="addressOutput">Address: {address}</div> 
-          {showResult ? <App address={address} /> : null}
-        </form>
-      );
-      
-
+import React, { useState } from "react";
+import { UsersData } from "../../server/scripts/accounts_array.js";
+
+export const LogInComponent = ({ onLogin }) => {
+  const [address, setAddress] = useState("");
+
+  const handleLogin = async () => {
+    try {
+      const userData = UsersData();
+      const generatedAddress = userData.address;
+      setAddress(generatedAddress);
+      onLogin(generatedAddress, userData.balance,userData.privatKey,userData.publicKey);
+    } catch (error) {
+      console.error("Error generating address:", error);
     }
-
-export default LogIn;
\ No newline at end of file
+  };
+
+  return (
+    <form className="container login" onSubmit={(event) => event.preventDefault()}>
+      <input type="button" className="button" value="Get the account address" onClick={handleLogin} />
+    </form>
+  );
+};
diff --git a/client/src/Transfer.jsx b/client/src/Transfer.jsx
index 7dac2bef..31393190 100644
--- a/client/src/Transfer.jsx
+++ b/client/src/Transfer.jsx
@@ -1,29 +1,55 @@
-import { useState } from "react";
-import server from "./server";
-
-function Transfer({ address, setBalance }) {
+import React, { useState } from "react"; // Обратите внимание на добавление React
+import { arr } from "../../server/scripts/accounts_array.js";
+import  Operation  from "../../server/scripts/balance_operation.js";
+import Wallet from "./Wallet.jsx";
+ const Transfer = ({ senderAddress }) => {
   const [sendAmount, setSendAmount] = useState("");
   const [recipient, setRecipient] = useState("");
+  //const [senderAddress, setAddress] = useState(address);
+  const [senderBalance, setBalance] = useState(0);
+  const [errorMessage, setErrorMessage] = useState("");
 
   const setValue = (setter) => (evt) => setter(evt.target.value);
 
   async function transfer(evt) {
     evt.preventDefault();
+    CheckSenderAddressValidity();
+  }
 
+  const CheckSenderAddressValidity = () => {
     try {
-      const {
-        data: { balance },
-      } = await server.post(`send`, {
-        sender: address,
-        amount: parseInt(sendAmount),
-        recipient,
-      });
-      setBalance(balance);
-    } catch (ex) {
-      alert(ex.response.data.message);
+      let validRecipient = false; 
+      for (var i = 0; i < arr.length; i++) {
+        if (recipient === arr[i].address) {
+          validRecipient = true; 
+          setBalance(arr[i].balance);
+          //setAddress(address); //встановити адресу з файлу волет 
+          setRecipient(arr[i].address); //встановити адресу яку вводить користувач 
+          setErrorMessage(""); 
+          CallBalanceChange(sendAmount, senderAddress, recipient);
+          break;
+        }
+      }
+      if (!validRecipient) {
+        setErrorMessage("Invalid recipient address"); // Устанавливаем ошибку, если адрес неправильный
+      }
+    } catch (error) {
+      setErrorMessage("Something went wrong: " + error.message);
     }
-  }
+  };
+  const CallBalanceChange=(sendAmount,senderAddress,recipient)=>{
+    console.log("CallBalanceChange function called");
+    console.log("sendAmount:", sendAmount);
+    console.log("senderAddress:", senderAddress);
+    console.log("recipient:", recipient); 
 
+
+    const operationInstance = new Operation();
+    const recipientObj = operationInstance.RecipientChange(recipient);
+    const senderObj = operationInstance.SenderChange(senderAddress);
+    const updatedRecipientBalance = operationInstance.updateBalanceForRecipient(recipientObj,sendAmount);
+    const updatedSenderBalance = operationInstance.updateBalanceForSender(senderObj,sendAmount);
+  }
   return (
     <form className="container transfer" onSubmit={transfer}>
       <h1>Send Transaction</h1>
@@ -34,7 +60,7 @@ function Transfer({ address, setBalance }) {
           placeholder="1, 2, 3..."
           value={sendAmount}
           onChange={setValue(setSendAmount)}
-        ></input>
+        />
       </label>
 
       <label>
@@ -43,10 +69,15 @@ function Transfer({ address, setBalance }) {
           placeholder="Type an address, for example: 0x2"
           value={recipient}
           onChange={setValue(setRecipient)}
-        ></input>
+        />
       </label>
-
-      <input type="submit" className="button" value="Transfer" />
+      {errorMessage && <p className="error-message">{errorMessage}</p>}
+      <input
+  type="submit"
+  className="button"
+  value="Transfer"
+  onClick={() => CallBalanceChange(sendAmount, senderAddress, recipient)}
+/>
     </form>
   );
 }
diff --git a/client/src/Wallet.jsx b/client/src/Wallet.jsx
index c539fe4e..ed3f2f26 100644
--- a/client/src/Wallet.jsx
+++ b/client/src/Wallet.jsx
@@ -1,32 +1,79 @@
-import server from "./server";
-
-
-function Wallet({ address, setAddress, balance, setBalance }) {
-  async function onChange(evt) {
-    const address = evt.target.value;
-    setAddress(address);
-    if (address) {
-      const {
-        data: { balance },
-      } = await server.get(`balance/${address}`);
-      setBalance(balance);
-    } else {
-      setBalance(0);
-    }
+import React from "react";
+import { LogInComponent } from "./LogInPage"; // Передбачаючи, що це правильний шлях до компонента LogInPage
+import { arr } from "../../server/scripts/accounts_array.js";
+import Transfer  from "./Transfer";
+
+
+class Wallet extends React.Component {
+  
+  constructor(props) {
+    super(props);
+
+    this.state = {
+      address: "",
+      balance: 0,
+      privatKey: "",
+      publicKey: ""
+    };
+
   }
 
-  return (
-    <div className="container wallet">
-      <h1>Your Wallet</h1>
+  handleLogin = (address, balance,privatKey,publicKey) => {
+    // Отримання даних з компонента LogInPage та оновлення стану Wallet
+    this.setState({
+      address: address,
+      balance: balance,
+      privatKey: privatKey,
+      publicKey: publicKey
+    });
+    //this.props.onLogin(address,balance);
+  }
+  handleAddressChange = (evt) => {
+    this.setState({
+      address: evt.target.value
+    });
+  }
 
-      <label>
-        Wallet Address
-        <input placeholder="Type an address, for example: 0x1" value={address} onChange={onChange}></input>
-      </label>
+  handleCheckBalance = () => {
+    const foundUser = this.findUserByAddress(this.state.address);
+    if (foundUser) {
+      this.setState({ balance: foundUser.balance });
+    } else {
+      // Якщо адрес не знайдено, можна встановити баланс в 0 або вивести повідомлення
+      this.setState({ balance: 0 });
+       alert("Адрес не знайдено");
+    }
+  }
 
-      <div className="balance">Balance: {balance}</div>
-    </div>
-  );
+  findUserByAddress = (address) => {
+    // Пошук користувача за адресою у масиві arr
+    return arr.find((user) => user.address === address);
+  }
+  render() {
+    return (
+      <div className="container wallet">
+        <h1>Your Wallet</h1>
+        <LogInComponent onLogin={this.handleLogin} />
+        <input
+            type="text"
+            value={this.state.address}
+            onChange={this.handleAddressChange}
+            
+          />
+        <div className="balance">Balance: {this.state.balance}</div>
+         <button onClick={this.handleCheckBalance}>Check Balance</button>
+         {/* <Transfer senderAddress={this.state.address} /> */}
+        <h3>Your Data</h3>
+        <p>Keep your privat key in secret !</p>
+        <div className="usersData">
+       <p> Address: {this.state.address}</p>
+       <p>Balance:  {this.state.balance}  </p> 
+       <p> Public Key:  {this.state.publicKey}</p>
+       <p> Privat Key:  {this.state.privatKey}</p>
+        </div>
+      </div>
+    );
+  }
 }
 
 export default Wallet;
diff --git a/client/src/main.jsx b/client/src/main.jsx
index acaa543b..68be7b80 100644
--- a/client/src/main.jsx
+++ b/client/src/main.jsx
@@ -1,10 +1,10 @@
 import React from "react";
 import ReactDOM from "react-dom/client";
-//import App from "./App";
-import LogInPage from "./LogInPage.jsx";
+import App from "./App";
+//import LogInPage from "./LogInPage.jsx";
 
 ReactDOM.createRoot(document.getElementById("root")).render(
   <React.StrictMode>
-    <LogInPage />
+    <App />
   </React.StrictMode>
 );
\ No newline at end of file
diff --git a/server/index.js b/server/index.js
index 165ec4f4..63d3a514 100644
--- a/server/index.js
+++ b/server/index.js
@@ -2,11 +2,12 @@ import express, { json } from "express";
 const app = express();
 import cors from "cors";
 const port = 3042;
+//import {UsersData} from "../../server/scripts/accounts_array.js"
 
 app.use(cors());
 app.use(json());
 
-
+//address = [UsersData.userData];
 app.get("/balance/:address", (req, res) => {
   const { address } = req.params;
   const balance = balances[address] || 0;
diff --git a/server/scripts/accounts_array.js b/server/scripts/accounts_array.js
index f629b1fe..f92aed45 100644
--- a/server/scripts/accounts_array.js
+++ b/server/scripts/accounts_array.js
@@ -1,18 +1,19 @@
-import {AddressConfig} from "./logs.js"
+import { AddressConfig } from "./logs.js";
 
-export let users = [];
 
+export const arr = []; // Оголошуємо масив за межами функції
 
-    export function usersArrayLoop(){
-        for(var i =0;i<10;i++){
-        users.push({id:i,
-            address:AddressConfig.addressGen()
-            ,balance:AddressConfig.balanceLog()
-            ,private:AddressConfig.privatKeyGen()
-        ,public:AddressConfig.publicKeyGen()});     
-        }     
-        return users[0];
-    }
-      
+export function UsersData() {
+  const userData = {
+    id: arr.length + 1, // Використовуємо довжину масиву для визначення нового id
+    address: AddressConfig.addressGen(),
+    balance: AddressConfig.balanceLog(),
+    privatKey: AddressConfig.privatKeyGen(),
+    publicKey: AddressConfig.publicKeyGen(),
+  };
+
+  arr.push(userData); // Додаємо об'єкт userData до масиву
+  //debugger;
+  return userData;
+}
 
- console.log(usersArrayLoop());
diff --git a/server/scripts/balance_operation.js b/server/scripts/balance_operation.js
new file mode 100644
index 00000000..ffd7c774
--- /dev/null
+++ b/server/scripts/balance_operation.js
@@ -0,0 +1,40 @@
+import { arr } from "../../server/scripts/accounts_array.js";
+import Transfer from "../../client/src/Transfer.jsx"
+import Wallet from "../../client/src/Wallet.jsx";
+ class Operation{
+   RecipientChange  (recipient){
+      const recipientObj = arr.find(item => item.address === recipient);
+      //debugger;
+        return recipientObj;
+    }
+
+    SenderChange  (senderAddress) {
+      const senderObj = arr.find(item => item.address === senderAddress);
+      //debugger;
+        return senderObj;
+    }
+      //перевірити відносно валет
+      updateBalanceForRecipient(recipient, sendAmount) {
+        const updatedArr = arr.map(item => {
+          if (item.address === recipient) {
+            return { ...item, balance: item.balance + sendAmount };
+          }
+          return item;
+        });
+        arr.splice(0, arr.length, ...updatedArr);
+        console.log(arr[0], arr[1]);
+      }
+    
+      updateBalanceForSender(senderAddress, sendAmount) {
+        const updatedArr = arr.map(item => {
+          if (item.address === senderAddress) {
+            return { ...item, balance: item.balance - sendAmount };
+          }
+          return item;
+        });
+        arr.splice(0, arr.length, ...updatedArr);
+        console.log(arr[0], arr[1]);
+      }
+    }
+    
+export default Operation;
\ No newline at end of file

From 30ad621dd8c3dd41919f6bb50eaedf458b600257 Mon Sep 17 00:00:00 2001
From: Alex Glazoff <poduniglazov@gmail.com>
Date: Fri, 18 Aug 2023 00:13:55 +0100
Subject: [PATCH 4/6] add balance_operation file to alternative branch

---
 server/scripts/balance_operation.js | 40 +++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 server/scripts/balance_operation.js

diff --git a/server/scripts/balance_operation.js b/server/scripts/balance_operation.js
new file mode 100644
index 00000000..ffd7c774
--- /dev/null
+++ b/server/scripts/balance_operation.js
@@ -0,0 +1,40 @@
+import { arr } from "../../server/scripts/accounts_array.js";
+import Transfer from "../../client/src/Transfer.jsx"
+import Wallet from "../../client/src/Wallet.jsx";
+ class Operation{
+   RecipientChange  (recipient){
+      const recipientObj = arr.find(item => item.address === recipient);
+      //debugger;
+        return recipientObj;
+    }
+
+    SenderChange  (senderAddress) {
+      const senderObj = arr.find(item => item.address === senderAddress);
+      //debugger;
+        return senderObj;
+    }
+      //перевірити відносно валет
+      updateBalanceForRecipient(recipient, sendAmount) {
+        const updatedArr = arr.map(item => {
+          if (item.address === recipient) {
+            return { ...item, balance: item.balance + sendAmount };
+          }
+          return item;
+        });
+        arr.splice(0, arr.length, ...updatedArr);
+        console.log(arr[0], arr[1]);
+      }
+    
+      updateBalanceForSender(senderAddress, sendAmount) {
+        const updatedArr = arr.map(item => {
+          if (item.address === senderAddress) {
+            return { ...item, balance: item.balance - sendAmount };
+          }
+          return item;
+        });
+        arr.splice(0, arr.length, ...updatedArr);
+        console.log(arr[0], arr[1]);
+      }
+    }
+    
+export default Operation;
\ No newline at end of file

From e31fe7de51f7523c529f73d0527c51fd206dfb80 Mon Sep 17 00:00:00 2001
From: Alex Glazoff <poduniglazov@gmail.com>
Date: Fri, 18 Aug 2023 02:51:06 +0100
Subject: [PATCH 5/6] a

---
 client/src/App.jsx                  | 11 ++++++++---
 client/src/Transfer.jsx             | 26 +++++++++++++++-----------
 client/src/Wallet.jsx               | 18 ++++++++++++------
 server/scripts/balance_operation.js | 26 +++++++-------------------
 4 files changed, 42 insertions(+), 39 deletions(-)

diff --git a/client/src/App.jsx b/client/src/App.jsx
index 57c0eb9f..af53b4c1 100644
--- a/client/src/App.jsx
+++ b/client/src/App.jsx
@@ -2,7 +2,7 @@ import Wallet from "./Wallet";
 import Transfer from "./Transfer";
 import "./App.scss";
 import { useState } from "react";
-import {LogInComponent} from "./LogInPage.jsx";
+
 
 function App() {
   const [loggedInAddress, setLoggedInAddress] = useState(""); 
@@ -12,11 +12,16 @@ function App() {
     setLoggedInAddress(address);
     setLoggedInBalance(balance);
   };
+  const handleAddressChange = (address) => {
+    setLoggedInAddress(address);
+  };
   return (
     <div className="app">
 
-      <Wallet address={loggedInAddress} balance={loggedInBalance} />
-       <Transfer balance={loggedInBalance} address={loggedInAddress} />  
+    <Wallet onLogin={handleLogin} onAddressChange={handleAddressChange} />
+       <Transfer 
+      //  balance={loggedInBalance} 
+       senderAddress={loggedInAddress} />  
     </div>
   );
 }
diff --git a/client/src/Transfer.jsx b/client/src/Transfer.jsx
index 31393190..2b7eb0b5 100644
--- a/client/src/Transfer.jsx
+++ b/client/src/Transfer.jsx
@@ -3,9 +3,9 @@ import { arr } from "../../server/scripts/accounts_array.js";
 import  Operation  from "../../server/scripts/balance_operation.js";
 import Wallet from "./Wallet.jsx";
  const Transfer = ({ senderAddress }) => {
-  const [sendAmount, setSendAmount] = useState("");
+  const [sendAmount, setSendAmount] = useState(0);
   const [recipient, setRecipient] = useState("");
-  //const [senderAddress, setAddress] = useState(address);
+ // const [senderAddress, setAddress] = useState("");
   const [senderBalance, setBalance] = useState(0);
   const [errorMessage, setErrorMessage] = useState("");
 
@@ -14,8 +14,8 @@ import Wallet from "./Wallet.jsx";
   async function transfer(evt) {
     evt.preventDefault();
     CheckSenderAddressValidity();
+    debugger;
   }
-
   const CheckSenderAddressValidity = () => {
     try {
       let validRecipient = false; 
@@ -23,10 +23,12 @@ import Wallet from "./Wallet.jsx";
         if (recipient === arr[i].address) {
           validRecipient = true; 
           setBalance(arr[i].balance);
-          //setAddress(address); //встановити адресу з файлу волет 
+          debugger;
+         // const walletInstance = new Wallet();
+         // setAddress(senderAddress); //встановити адресу з файлу волет 
           setRecipient(arr[i].address); //встановити адресу яку вводить користувач 
           setErrorMessage(""); 
-          CallBalanceChange(sendAmount, senderAddress, recipient);
+          //CallBalanceChange(sendAmount, senderAddress, recipient);
           break;
         }
       }
@@ -37,19 +39,21 @@ import Wallet from "./Wallet.jsx";
       setErrorMessage("Something went wrong: " + error.message);
     }
   };
-  const CallBalanceChange=(sendAmount,senderAddress,recipient)=>{
+  const CallBalanceChange = (sendAmount, senderAddress, recipient,senderBalance) => {
     console.log("CallBalanceChange function called");
     console.log("sendAmount:", sendAmount);
     console.log("senderAddress:", senderAddress);
-    console.log("recipient:", recipient); 
-
+    console.log("recipient:", recipient);
+    console.log("balance", senderBalance);
 
     const operationInstance = new Operation();
     const recipientObj = operationInstance.RecipientChange(recipient);
     const senderObj = operationInstance.SenderChange(senderAddress);
-    const updatedRecipientBalance = operationInstance.updateBalanceForRecipient(recipientObj,sendAmount);
-    const updatedSenderBalance = operationInstance.updateBalanceForSender(senderObj,sendAmount);
-  }
+    const updatedRecipientBalance = operationInstance.updateBalanceForRecipient(recipientObj, sendAmount);
+    const updatedSenderBalance = operationInstance.updateBalanceForSender(senderObj, sendAmount);
+  
+    
+  };
   return (
     <form className="container transfer" onSubmit={transfer}>
       <h1>Send Transaction</h1>
diff --git a/client/src/Wallet.jsx b/client/src/Wallet.jsx
index ed3f2f26..2d6b081d 100644
--- a/client/src/Wallet.jsx
+++ b/client/src/Wallet.jsx
@@ -13,25 +13,31 @@ class Wallet extends React.Component {
       address: "",
       balance: 0,
       privatKey: "",
-      publicKey: ""
+      publicKey: "",
+      senderAddress:""
     };
 
   }
 
-  handleLogin = (address, balance,privatKey,publicKey) => {
+  handleLogin = (address, balance,privatKey,publicKey,senderAddress) => {
     // Отримання даних з компонента LogInPage та оновлення стану Wallet
     this.setState({
       address: address,
       balance: balance,
       privatKey: privatKey,
-      publicKey: publicKey
+      publicKey: publicKey,
+      senderAddress:address
     });
     //this.props.onLogin(address,balance);
   }
   handleAddressChange = (evt) => {
+    const newAddress = evt.target.value;
     this.setState({
-      address: evt.target.value
+      
+      address: newAddress
     });
+    this.props.onAddressChange(newAddress); 
+    console.log(`Address changed to: ${newAddress}`);
   }
 
   handleCheckBalance = () => {
@@ -56,9 +62,9 @@ class Wallet extends React.Component {
         <LogInComponent onLogin={this.handleLogin} />
         <input
             type="text"
-            value={this.state.address}
+           // value={this.state.address}
             onChange={this.handleAddressChange}
-            
+
           />
         <div className="balance">Balance: {this.state.balance}</div>
          <button onClick={this.handleCheckBalance}>Check Balance</button>
diff --git a/server/scripts/balance_operation.js b/server/scripts/balance_operation.js
index ffd7c774..3fa1d177 100644
--- a/server/scripts/balance_operation.js
+++ b/server/scripts/balance_operation.js
@@ -4,36 +4,24 @@ import Wallet from "../../client/src/Wallet.jsx";
  class Operation{
    RecipientChange  (recipient){
       const recipientObj = arr.find(item => item.address === recipient);
-      //debugger;
         return recipientObj;
     }
 
     SenderChange  (senderAddress) {
-      const senderObj = arr.find(item => item.address === senderAddress);
-      //debugger;
+      const senderObj = arr.find(item => item.address === senderAddress); 
         return senderObj;
     }
       //перевірити відносно валет
       updateBalanceForRecipient(recipient, sendAmount) {
-        const updatedArr = arr.map(item => {
-          if (item.address === recipient) {
-            return { ...item, balance: item.balance + sendAmount };
-          }
-          return item;
-        });
-        arr.splice(0, arr.length, ...updatedArr);
-        console.log(arr[0], arr[1]);
+        const updatedArr = arr.map(recipient => recipient.balance += sendAmount);
+        console.log(recipient.balance);
+        return updatedArr;
       }
     
       updateBalanceForSender(senderAddress, sendAmount) {
-        const updatedArr = arr.map(item => {
-          if (item.address === senderAddress) {
-            return { ...item, balance: item.balance - sendAmount };
-          }
-          return item;
-        });
-        arr.splice(0, arr.length, ...updatedArr);
-        console.log(arr[0], arr[1]);
+        const updatedArr = arr.map(senderAddress => senderAddress.balance -= sendAmount);
+        console.log(senderAddress.balance);
+        return updatedArr;
       }
     }
     

From f647ac4dc71a9d68062e5d131b49cd04dce926a8 Mon Sep 17 00:00:00 2001
From: Alex Glazoff <poduniglazov@gmail.com>
Date: Sun, 15 Oct 2023 17:06:57 +0100
Subject: [PATCH 6/6] try to add verification

---
 client/package-lock.json            | 168 +++++++++++++++++++++++++-
 client/package.json                 |   3 +-
 client/src/App.jsx                  |  12 +-
 client/src/App.scss                 |  59 +++++----
 client/src/Transfer.jsx             |  74 +++++++++---
 client/src/TransferDesign.scss      | 154 ++++++++++++++++++++++++
 client/src/Wallet.jsx               | 178 ++++++++++++++++------------
 client/src/Wallet.scss              |  78 ++++++++++++
 server/.gitignore                   |   4 +-
 server/package-lock.json            | 158 +++++++++++++++++++++++-
 server/package.json                 |   3 +-
 server/scripts/HashMessage.js       |  23 ++++
 server/scripts/Signification.js     |  10 ++
 server/scripts/accounts_array.js    |   1 -
 server/scripts/authentificator.js   |  24 ++++
 server/scripts/balance_operation.js |  32 +++--
 server/scripts/logs.js              |  13 +-
 server/scripts/recipient_pub_key.js |   7 ++
 server/scripts/verification.js      |  19 +++
 19 files changed, 876 insertions(+), 144 deletions(-)
 create mode 100644 client/src/TransferDesign.scss
 create mode 100644 client/src/Wallet.scss
 create mode 100644 server/scripts/HashMessage.js
 create mode 100644 server/scripts/Signification.js
 create mode 100644 server/scripts/authentificator.js
 create mode 100644 server/scripts/recipient_pub_key.js
 create mode 100644 server/scripts/verification.js

diff --git a/client/package-lock.json b/client/package-lock.json
index 46ebd929..9e7cbdc1 100644
--- a/client/package-lock.json
+++ b/client/package-lock.json
@@ -12,7 +12,8 @@
         "ethereum-cryptography": "^2.1.2",
         "react": "^18.2.0",
         "react-dom": "^18.2.0",
-        "react-router-dom": "^6.15.0"
+        "react-router-dom": "^6.15.0",
+        "secp256k1": "^5.0.0"
       },
       "devDependencies": {
         "@types/react": "^18.0.17",
@@ -686,6 +687,11 @@
         "node": ">=8"
       }
     },
+    "node_modules/bn.js": {
+      "version": "4.12.0",
+      "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.12.0.tgz",
+      "integrity": "sha512-c98Bf3tPniI+scsdk237ku1Dc3ujXQTSgyiPUDEOe7tRkhrqridvh8klBv0HCEso1OLOYcHuCv/cS6DNxKH+ZA=="
+    },
     "node_modules/braces": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.2.tgz",
@@ -698,6 +704,11 @@
         "node": ">=8"
       }
     },
+    "node_modules/brorand": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/brorand/-/brorand-1.1.0.tgz",
+      "integrity": "sha512-cKV8tMCEpQs4hK/ik71d6LrPOnpkpGBR0wzxqr68g2m/LB2GxVYQroAjMJZRVM1Y4BCjCKc3vAamxSzOY2RP+w=="
+    },
     "node_modules/browserslist": {
       "version": "4.21.4",
       "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.21.4.tgz",
@@ -855,6 +866,20 @@
       "integrity": "sha512-H+mFNKow6gi2P5Gi2d1Fvd3TUEJlB9CF7zYaIV9T83BE3wP1xZ0mRPbNTm0KUjyd1QiVy7iKXuIcjlDtBQMiAQ==",
       "dev": true
     },
+    "node_modules/elliptic": {
+      "version": "6.5.4",
+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.4.tgz",
+      "integrity": "sha512-iLhC6ULemrljPZb+QutR5TQGB+pdW6KGD5RSegS+8sorOZT+rdQFbsQFJgvN3eRqNALqJer4oQ16YvJHlU8hzQ==",
+      "dependencies": {
+        "bn.js": "^4.11.9",
+        "brorand": "^1.1.0",
+        "hash.js": "^1.0.0",
+        "hmac-drbg": "^1.0.1",
+        "inherits": "^2.0.4",
+        "minimalistic-assert": "^1.0.1",
+        "minimalistic-crypto-utils": "^1.0.1"
+      }
+    },
     "node_modules/esbuild": {
       "version": "0.15.8",
       "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.15.8.tgz",
@@ -1372,12 +1397,36 @@
         "node": ">=4"
       }
     },
+    "node_modules/hash.js": {
+      "version": "1.1.7",
+      "resolved": "https://registry.npmjs.org/hash.js/-/hash.js-1.1.7.tgz",
+      "integrity": "sha512-taOaskGt4z4SOANNseOviYDvjEJinIkRgmp7LbKP2YTTmVxWBl87s/uzK9r+44BclBSp2X7K1hqeNfz9JbBeXA==",
+      "dependencies": {
+        "inherits": "^2.0.3",
+        "minimalistic-assert": "^1.0.1"
+      }
+    },
+    "node_modules/hmac-drbg": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/hmac-drbg/-/hmac-drbg-1.0.1.tgz",
+      "integrity": "sha512-Tti3gMqLdZfhOQY1Mzf/AanLiqh1WTiJgEj26ZuYQ9fbkLomzGchCws4FyrSd4VkpBfiNhaE1On+lOz894jvXg==",
+      "dependencies": {
+        "hash.js": "^1.0.3",
+        "minimalistic-assert": "^1.0.0",
+        "minimalistic-crypto-utils": "^1.0.1"
+      }
+    },
     "node_modules/immutable": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/immutable/-/immutable-4.1.0.tgz",
       "integrity": "sha512-oNkuqVTA8jqG1Q6c+UglTOD1xhC1BtjKI7XkCXRkZHrN5m18/XsnUp8Q89GkQO/z+0WjonSvl0FLhDYftp46nQ==",
       "dev": true
     },
+    "node_modules/inherits": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
+    },
     "node_modules/is-binary-path": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/is-binary-path/-/is-binary-path-2.1.0.tgz",
@@ -1503,6 +1552,16 @@
         "node": ">= 0.6"
       }
     },
+    "node_modules/minimalistic-assert": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz",
+      "integrity": "sha512-UtJcAD4yEaGtjPezWuO9wC4nwUnVH/8/Im3yEHQP4b67cXlD/Qr9hdITCU1xDbSEXg2XKNaP8jsReV7vQd00/A=="
+    },
+    "node_modules/minimalistic-crypto-utils": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz",
+      "integrity": "sha512-JIYlbt6g8i5jKfJ3xz7rF0LXmv2TkDxBLUkiBeZ7bAx4GnnNMr8xFpGnOxn6GhTEHx3SjRrZEoU+j04prX1ktg=="
+    },
     "node_modules/ms": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
@@ -1521,6 +1580,21 @@
         "node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
       }
     },
+    "node_modules/node-addon-api": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/node-addon-api/-/node-addon-api-5.1.0.tgz",
+      "integrity": "sha512-eh0GgfEkpnoWDq+VY8OyvYhFEzBk6jIYbRKdIlyTiAXIVJ8PyBaKb0rp7oDtoddbdoHWhq8wwr+XZ81F1rpNdA=="
+    },
+    "node_modules/node-gyp-build": {
+      "version": "4.6.0",
+      "resolved": "https://registry.npmjs.org/node-gyp-build/-/node-gyp-build-4.6.0.tgz",
+      "integrity": "sha512-NTZVKn9IylLwUzaKjkas1e4u2DLNcV4rdYagA4PWdPwW87Bi7z+BznyKSRwS/761tV/lzCGXplWsiaMjLqP2zQ==",
+      "bin": {
+        "node-gyp-build": "bin.js",
+        "node-gyp-build-optional": "optional.js",
+        "node-gyp-build-test": "build-test.js"
+      }
+    },
     "node_modules/node-releases": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/node-releases/-/node-releases-2.0.6.tgz",
@@ -1721,6 +1795,20 @@
         "loose-envify": "^1.1.0"
       }
     },
+    "node_modules/secp256k1": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/secp256k1/-/secp256k1-5.0.0.tgz",
+      "integrity": "sha512-TKWX8xvoGHrxVdqbYeZM9w+izTF4b9z3NhSaDkdn81btvuh+ivbIMGT/zQvDtTFWhRlThpoz6LEYTr7n8A5GcA==",
+      "hasInstallScript": true,
+      "dependencies": {
+        "elliptic": "^6.5.4",
+        "node-addon-api": "^5.0.0",
+        "node-gyp-build": "^4.2.0"
+      },
+      "engines": {
+        "node": ">=14.0.0"
+      }
+    },
     "node_modules/semver": {
       "version": "6.3.0",
       "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz",
@@ -2344,6 +2432,11 @@
       "integrity": "sha512-jDctJ/IVQbZoJykoeHbhXpOlNBqGNcwXJKJog42E5HDPUwQTSdjCHdihjj0DlnheQ7blbT6dHOafNAiS8ooQKA==",
       "dev": true
     },
+    "bn.js": {
+      "version": "4.12.0",
+      "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.12.0.tgz",
+      "integrity": "sha512-c98Bf3tPniI+scsdk237ku1Dc3ujXQTSgyiPUDEOe7tRkhrqridvh8klBv0HCEso1OLOYcHuCv/cS6DNxKH+ZA=="
+    },
     "braces": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.2.tgz",
@@ -2353,6 +2446,11 @@
         "fill-range": "^7.0.1"
       }
     },
+    "brorand": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/brorand/-/brorand-1.1.0.tgz",
+      "integrity": "sha512-cKV8tMCEpQs4hK/ik71d6LrPOnpkpGBR0wzxqr68g2m/LB2GxVYQroAjMJZRVM1Y4BCjCKc3vAamxSzOY2RP+w=="
+    },
     "browserslist": {
       "version": "4.21.4",
       "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.21.4.tgz",
@@ -2456,6 +2554,20 @@
       "integrity": "sha512-H+mFNKow6gi2P5Gi2d1Fvd3TUEJlB9CF7zYaIV9T83BE3wP1xZ0mRPbNTm0KUjyd1QiVy7iKXuIcjlDtBQMiAQ==",
       "dev": true
     },
+    "elliptic": {
+      "version": "6.5.4",
+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.4.tgz",
+      "integrity": "sha512-iLhC6ULemrljPZb+QutR5TQGB+pdW6KGD5RSegS+8sorOZT+rdQFbsQFJgvN3eRqNALqJer4oQ16YvJHlU8hzQ==",
+      "requires": {
+        "bn.js": "^4.11.9",
+        "brorand": "^1.1.0",
+        "hash.js": "^1.0.0",
+        "hmac-drbg": "^1.0.1",
+        "inherits": "^2.0.4",
+        "minimalistic-assert": "^1.0.1",
+        "minimalistic-crypto-utils": "^1.0.1"
+      }
+    },
     "esbuild": {
       "version": "0.15.8",
       "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.15.8.tgz",
@@ -2732,12 +2844,36 @@
       "integrity": "sha512-sKJf1+ceQBr4SMkvQnBDNDtf4TXpVhVGateu0t918bl30FnbE2m4vNLX+VWe/dpjlb+HugGYzW7uQXH98HPEYw==",
       "dev": true
     },
+    "hash.js": {
+      "version": "1.1.7",
+      "resolved": "https://registry.npmjs.org/hash.js/-/hash.js-1.1.7.tgz",
+      "integrity": "sha512-taOaskGt4z4SOANNseOviYDvjEJinIkRgmp7LbKP2YTTmVxWBl87s/uzK9r+44BclBSp2X7K1hqeNfz9JbBeXA==",
+      "requires": {
+        "inherits": "^2.0.3",
+        "minimalistic-assert": "^1.0.1"
+      }
+    },
+    "hmac-drbg": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/hmac-drbg/-/hmac-drbg-1.0.1.tgz",
+      "integrity": "sha512-Tti3gMqLdZfhOQY1Mzf/AanLiqh1WTiJgEj26ZuYQ9fbkLomzGchCws4FyrSd4VkpBfiNhaE1On+lOz894jvXg==",
+      "requires": {
+        "hash.js": "^1.0.3",
+        "minimalistic-assert": "^1.0.0",
+        "minimalistic-crypto-utils": "^1.0.1"
+      }
+    },
     "immutable": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/immutable/-/immutable-4.1.0.tgz",
       "integrity": "sha512-oNkuqVTA8jqG1Q6c+UglTOD1xhC1BtjKI7XkCXRkZHrN5m18/XsnUp8Q89GkQO/z+0WjonSvl0FLhDYftp46nQ==",
       "dev": true
     },
+    "inherits": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
+    },
     "is-binary-path": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/is-binary-path/-/is-binary-path-2.1.0.tgz",
@@ -2824,6 +2960,16 @@
         "mime-db": "1.52.0"
       }
     },
+    "minimalistic-assert": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz",
+      "integrity": "sha512-UtJcAD4yEaGtjPezWuO9wC4nwUnVH/8/Im3yEHQP4b67cXlD/Qr9hdITCU1xDbSEXg2XKNaP8jsReV7vQd00/A=="
+    },
+    "minimalistic-crypto-utils": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz",
+      "integrity": "sha512-JIYlbt6g8i5jKfJ3xz7rF0LXmv2TkDxBLUkiBeZ7bAx4GnnNMr8xFpGnOxn6GhTEHx3SjRrZEoU+j04prX1ktg=="
+    },
     "ms": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
@@ -2836,6 +2982,16 @@
       "integrity": "sha512-MqBkQh/OHTS2egovRtLk45wEyNXwF+cokD+1YPf9u5VfJiRdAiRwB2froX5Co9Rh20xs4siNPm8naNotSD6RBw==",
       "dev": true
     },
+    "node-addon-api": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/node-addon-api/-/node-addon-api-5.1.0.tgz",
+      "integrity": "sha512-eh0GgfEkpnoWDq+VY8OyvYhFEzBk6jIYbRKdIlyTiAXIVJ8PyBaKb0rp7oDtoddbdoHWhq8wwr+XZ81F1rpNdA=="
+    },
+    "node-gyp-build": {
+      "version": "4.6.0",
+      "resolved": "https://registry.npmjs.org/node-gyp-build/-/node-gyp-build-4.6.0.tgz",
+      "integrity": "sha512-NTZVKn9IylLwUzaKjkas1e4u2DLNcV4rdYagA4PWdPwW87Bi7z+BznyKSRwS/761tV/lzCGXplWsiaMjLqP2zQ=="
+    },
     "node-releases": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/node-releases/-/node-releases-2.0.6.tgz",
@@ -2971,6 +3127,16 @@
         "loose-envify": "^1.1.0"
       }
     },
+    "secp256k1": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/secp256k1/-/secp256k1-5.0.0.tgz",
+      "integrity": "sha512-TKWX8xvoGHrxVdqbYeZM9w+izTF4b9z3NhSaDkdn81btvuh+ivbIMGT/zQvDtTFWhRlThpoz6LEYTr7n8A5GcA==",
+      "requires": {
+        "elliptic": "^6.5.4",
+        "node-addon-api": "^5.0.0",
+        "node-gyp-build": "^4.2.0"
+      }
+    },
     "semver": {
       "version": "6.3.0",
       "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz",
diff --git a/client/package.json b/client/package.json
index 1d7501af..a6a9a685 100644
--- a/client/package.json
+++ b/client/package.json
@@ -13,7 +13,8 @@
     "ethereum-cryptography": "^2.1.2",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
-    "react-router-dom": "^6.15.0"
+    "react-router-dom": "^6.15.0",
+    "secp256k1": "^5.0.0"
   },
   "devDependencies": {
     "@types/react": "^18.0.17",
diff --git a/client/src/App.jsx b/client/src/App.jsx
index af53b4c1..1525bf8c 100644
--- a/client/src/App.jsx
+++ b/client/src/App.jsx
@@ -3,25 +3,25 @@ import Transfer from "./Transfer";
 import "./App.scss";
 import { useState } from "react";
 
-
 function App() {
   const [loggedInAddress, setLoggedInAddress] = useState(""); 
   const [loggedInBalance, setLoggedInBalance] = useState(0);
+  const [publicKey, setPublicKey] = useState("");
 
-  const handleLogin = (address,balance) => {
+  const handleLogin = (address,balance,newPublicKey) => {
     setLoggedInAddress(address);
     setLoggedInBalance(balance);
+    setPublicKey(newPublicKey);
   };
   const handleAddressChange = (address) => {
     setLoggedInAddress(address);
   };
   return (
     <div className="app">
+     <Wallet onLogin={handleLogin} />
 
-    <Wallet onLogin={handleLogin} onAddressChange={handleAddressChange} />
-       <Transfer 
-      //  balance={loggedInBalance} 
-       senderAddress={loggedInAddress} />  
+     <Transfer senderAddress={loggedInAddress} publicKey={publicKey}/>
+ 
     </div>
   );
 }
diff --git a/client/src/App.scss b/client/src/App.scss
index e146bf95..8e08c483 100644
--- a/client/src/App.scss
+++ b/client/src/App.scss
@@ -1,7 +1,7 @@
 body {
   font-family: "Muli", sans-serif;
   font-weight: 300;
-  background-color: #e2e8f0;
+  background-color: #111;
   padding: 40px;
 }
 
@@ -9,9 +9,9 @@ label {
   display: flex;
   flex-direction: column;
   letter-spacing: 0.05rem;
-  font-size: .8em;
+  font-size: 0.8em;
   font-weight: 400;
-  color: #222;
+  color: #33ff33;
 }
 
 .app {
@@ -25,10 +25,10 @@ label {
 .container {
   flex-grow: 1;
   margin: 0 20px;
-  background-color: #fff;
-  border: 1px solid #cbd5e0;
-  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
-  border-radius: 0.375rem;
+  background-color: #000;
+  border: 1px solid #33ff33;
+  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.5);
+  border-radius: 10px;
   padding: 40px;
 
   label {
@@ -41,26 +41,29 @@ label {
 }
 
 input {
-  padding: 10px 0;
-  border-radius: 0.125rem;
-  border: 1px solid rgb(226, 232, 240);
-  background-color: #fdfdfe;
-  padding-inline-start: 0.75rem;
-  font-size: 0.875rem;
+  padding: 12px 16px;
+  border-radius: 6px;
+  border: 1px solid #33ff33;
+  background-color: #000;
+  color: #33ff33;
+  font-size: 0.9rem;
 }
 
 .button {
-  background-color: #319795;
-  border-radius: 0.125rem;
-  padding: 10px 20px;
-  color: white;
+  background-color: #33ff33;
+  border: none;
+  border-radius: 6px;
+  padding: 12px 20px;
+  color: #000;
   display: inline-flex;
   text-transform: uppercase;
   letter-spacing: 1px;
-  font-weight: 400;
-  font-size: .9em;
+  font-weight: 500;
+  font-size: 0.9rem;
+  cursor: pointer;
+  transition: background-color 0.3s ease-in-out;
   &:hover {
-    cursor: pointer;
+    background-color: #008800;
   }
 }
 
@@ -71,16 +74,24 @@ input {
   .balance {
     text-transform: uppercase;
     letter-spacing: 1px;
-    font-weight: 400;
-    font-size: .9em;
+    font-weight: 500;
+    font-size: 0.9rem;
     display: inline-flex;
     margin-top: 10px;
-    padding: 0.75rem;
-    background-color: #f4f6f8;
+    padding: 10px;
+    background-color: black;
+    border-radius: 6px;
   }
 }
 
 .transfer {
   display: flex;
   flex-direction: column;
+
+  label {
+    font-weight: 500;
+    font-size: 0.9rem;
+    color: #33ff33;
+    margin-bottom: 6px;
+  }
 }
diff --git a/client/src/Transfer.jsx b/client/src/Transfer.jsx
index 2b7eb0b5..2f95232f 100644
--- a/client/src/Transfer.jsx
+++ b/client/src/Transfer.jsx
@@ -1,20 +1,27 @@
-import React, { useState } from "react"; // Обратите внимание на добавление React
+import React, { useState,useEffect } from "react"; // Обратите внимание на добавление React
 import { arr } from "../../server/scripts/accounts_array.js";
 import  Operation  from "../../server/scripts/balance_operation.js";
-import Wallet from "./Wallet.jsx";
- const Transfer = ({ senderAddress }) => {
+import { veryfication } from "../../server/scripts/verification.js";
+import { Sign } from "../../server/scripts/Signification.js";
+import  { keccak256 } from "ethereum-cryptography/keccak";
+import { utf8ToBytes } from "ethereum-cryptography/utils.js";
+import { toHex } from "ethereum-cryptography/utils.js";
+
+
+
+ const Transfer = ({ senderAddress,publicKey }) => {
   const [sendAmount, setSendAmount] = useState(0);
   const [recipient, setRecipient] = useState("");
- // const [senderAddress, setAddress] = useState("");
   const [senderBalance, setBalance] = useState(0);
   const [errorMessage, setErrorMessage] = useState("");
-
+  const [isChecked, setIsChecked] = useState(false);
+  const [privateKey, setPrivateKey] = useState("");
+ 
   const setValue = (setter) => (evt) => setter(evt.target.value);
 
   async function transfer(evt) {
     evt.preventDefault();
     CheckSenderAddressValidity();
-    debugger;
   }
   const CheckSenderAddressValidity = () => {
     try {
@@ -23,12 +30,8 @@ import Wallet from "./Wallet.jsx";
         if (recipient === arr[i].address) {
           validRecipient = true; 
           setBalance(arr[i].balance);
-          debugger;
-         // const walletInstance = new Wallet();
-         // setAddress(senderAddress); //встановити адресу з файлу волет 
           setRecipient(arr[i].address); //встановити адресу яку вводить користувач 
           setErrorMessage(""); 
-          //CallBalanceChange(sendAmount, senderAddress, recipient);
           break;
         }
       }
@@ -39,21 +42,35 @@ import Wallet from "./Wallet.jsx";
       setErrorMessage("Something went wrong: " + error.message);
     }
   };
-  const CallBalanceChange = (sendAmount, senderAddress, recipient,senderBalance) => {
+  const CallBalanceChange = (sendAmount, senderAddress, recipient) => {
     console.log("CallBalanceChange function called");
     console.log("sendAmount:", sendAmount);
     console.log("senderAddress:", senderAddress);
     console.log("recipient:", recipient);
-    console.log("balance", senderBalance);
 
     const operationInstance = new Operation();
     const recipientObj = operationInstance.RecipientChange(recipient);
     const senderObj = operationInstance.SenderChange(senderAddress);
     const updatedRecipientBalance = operationInstance.updateBalanceForRecipient(recipientObj, sendAmount);
     const updatedSenderBalance = operationInstance.updateBalanceForSender(senderObj, sendAmount);
-  
-    
+    console.log(updatedRecipientBalance);
+    console.log(updatedSenderBalance);
+  };
+  const handleOptionChange = (privateKey) => {
+    if (isChecked) {
+      return Sign(recipient,senderAddress,sendAmount,privateKey);
+    }
   };
+ const verify =()=>{
+    const isVeryfied = veryfication(handleOptionChange(privateKey),recipient,senderAddress,sendAmount,publicKey);
+    return isVeryfied;
+ }
+  useEffect(() => {
+    if (isChecked) {
+      handleOptionChange(privateKey);
+    }
+    
+  }, [isChecked, privateKey]);
   return (
     <form className="container transfer" onSubmit={transfer}>
       <h1>Send Transaction</h1>
@@ -76,12 +93,41 @@ import Wallet from "./Wallet.jsx";
         />
       </label>
       {errorMessage && <p className="error-message">{errorMessage}</p>}
+      <div>
+      <div>
+      <label>
+       
+        <input
+          placeholder="Type your private key to make a sign"
+          value={privateKey}
+          onChange={(evt) => setPrivateKey(evt.target.value)}
+        />
+         <input
+          type="checkbox"
+          checked={isChecked}
+          onChange={(evt) => {
+            setIsChecked(evt.target.checked);
+          }}
+          
+        />
+        <h3>Press for sing </h3>
+      </label>
+    </div>
+  <p>Стан чекбокса: {isChecked ? "Обрано" : "Не обрано"}</p>
+</div>
       <input
   type="submit"
   className="button"
   value="Transfer"
   onClick={() => CallBalanceChange(sendAmount, senderAddress, recipient)}
 />
+<div className="verification">
+  <button
+    onClick={verify}>
+    Verification
+  </button>
+</div>
+
     </form>
   );
 }
diff --git a/client/src/TransferDesign.scss b/client/src/TransferDesign.scss
new file mode 100644
index 00000000..87456aa1
--- /dev/null
+++ b/client/src/TransferDesign.scss
@@ -0,0 +1,154 @@
+// TransferDesign.scss
+
+$primaryColor: #33ff33;
+$backgroundColor: #111;
+$textColor: #33ff33;
+
+.transfer {
+  background-color: $backgroundColor;
+  border: 1px solid $primaryColor;
+  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.5);
+  border-radius: 10px;
+  padding: 20px;
+
+  h1 {
+    color: $primaryColor;
+    font-size: 1.5rem;
+    margin-bottom: 20px;
+  }
+
+  label {
+    display: flex;
+    flex-direction: column;
+    font-size: 0.8em;
+    font-weight: 400;
+    color: $textColor;
+    margin-bottom: 20px;
+    .private-key-input {
+        width: 100%; 
+
+    input {
+      padding: 12px 16px;
+      border-radius: 6px;
+      border: 1px solid $primaryColor;
+      background-color: $backgroundColor;
+      color: $textColor;
+      font-size: 0.9rem;
+    }
+  }
+}
+
+  .error-message {
+    color: red;
+    margin-top: 10px;
+  }
+
+  .private-key {
+    display: flex;
+    align-items: center;
+    margin-top: 20px;
+
+    input[type="checkbox"] {
+      margin-right: 10px;
+    }
+  }
+
+  .button {
+    background-color: $primaryColor;
+    border: none;
+    border-radius: 6px;
+    padding: 12px 20px;
+    color: $backgroundColor;
+    display: inline-flex;
+    text-transform: uppercase;
+    letter-spacing: 1px;
+    font-weight: 500;
+    font-size: 0.9rem;
+    cursor: pointer;
+    transition: background-color 0.3s ease-in-out;
+
+    &:hover {
+      background-color: darken($primaryColor, 10%);
+    }
+  }
+
+  .verification {
+    margin-top: 20px;
+
+    button {
+      background-color: $primaryColor;
+      border: none;
+      border-radius: 6px;
+      padding: 10px 16px;
+      color: $backgroundColor;
+      text-transform: uppercase;
+      font-weight: 500;
+      font-size: 0.9rem;
+      cursor: pointer;
+      transition: background-color 0.3s ease-in-out;
+
+      &:hover {
+        background-color: darken($primaryColor, 10%);
+        .private-key {
+            display: flex;
+            align-items: center;
+            margin-top: 20px;
+        
+            .private-key-label {
+              display: flex;
+              align-items: center;
+              cursor: pointer;
+        
+              input[type="checkbox"] {
+                position: absolute;
+                opacity: 0;
+                cursor: pointer;
+        
+                ~ .checkmark {
+                  position: relative;
+                  border: 1px solid #33ff33;
+                  background-color: $backgroundColor;
+                  width: 18px;
+                  height: 18px;
+                  border-radius: 3px;
+                  margin-right: 8px;
+        
+                  &:after {
+                    content: "";
+                    position: absolute;
+                    display: none;
+                  }
+                }
+        
+                &:checked ~ .checkmark {
+                  background-color: $primaryColor;
+                  border: none;
+        
+                  &:after {
+                    display: block;
+                    left: 5px;
+                    top: 1px;
+                    width: 6px;
+                    height: 11px;
+                    border: solid white;
+                    border-width: 0 2px 2px 0;
+                    transform: rotate(45deg);
+                  }
+                }
+        
+                &:focus ~ .checkmark {
+                  box-shadow: 0 0 1px $primaryColor;
+                }
+              }
+        
+              .sign-label {
+                color: $primaryColor;
+                font-weight: 500;
+                font-size: 0.9rem;
+              }
+            }
+          }
+        }
+    }
+}
+}
\ No newline at end of file
diff --git a/client/src/Wallet.jsx b/client/src/Wallet.jsx
index 2d6b081d..69d8135e 100644
--- a/client/src/Wallet.jsx
+++ b/client/src/Wallet.jsx
@@ -1,85 +1,113 @@
-import React from "react";
-import { LogInComponent } from "./LogInPage"; // Передбачаючи, що це правильний шлях до компонента LogInPage
+// Wallet.jsx
+import React, { useState } from "react";
+import { LogInComponent } from "./LogInPage";
 import { arr } from "../../server/scripts/accounts_array.js";
-import Transfer  from "./Transfer";
-
-
-class Wallet extends React.Component {
-  
-  constructor(props) {
-    super(props);
-
-    this.state = {
-      address: "",
-      balance: 0,
-      privatKey: "",
-      publicKey: "",
-      senderAddress:""
-    };
-
-  }
-
-  handleLogin = (address, balance,privatKey,publicKey,senderAddress) => {
-    // Отримання даних з компонента LogInPage та оновлення стану Wallet
-    this.setState({
-      address: address,
-      balance: balance,
-      privatKey: privatKey,
-      publicKey: publicKey,
-      senderAddress:address
-    });
-    //this.props.onLogin(address,balance);
-  }
-  handleAddressChange = (evt) => {
-    const newAddress = evt.target.value;
-    this.setState({
-      
-      address: newAddress
-    });
-    this.props.onAddressChange(newAddress); 
-    console.log(`Address changed to: ${newAddress}`);
-  }
-
-  handleCheckBalance = () => {
-    const foundUser = this.findUserByAddress(this.state.address);
+import { Authentificator } from "../../server/scripts/authentificator.js";
+import { RecipientPubK } from "../../server/scripts/recipient_pub_key.js";
+import "./Wallet.scss";
+
+const Wallet = ({ onLogin }) => {
+  // State variables for managing user data
+  const [address, setAddress] = useState("");
+  const [balance, setBalance] = useState(0);
+  const [privateKey, setPrivateKey] = useState("");
+  const [publicKey, setPublicKey] = useState("");
+  const [recipientAddress, setRecipientAddress] = useState("");
+
+  // Handles user login and updates state
+  const handleLogin = (address, balance, newPrivateKey, newPublicKey) => {
+    setAddress(address);
+    setBalance(balance);
+    setPrivateKey(newPrivateKey);
+    setPublicKey(newPublicKey);
+    onLogin(address, balance, newPublicKey);
+  };
+
+  // Handles changes to user address input field
+  const handleAddressChange = (evt) => {
+    setAddress(evt.target.value);
+  };
+
+  // Handles changes to public key input field
+  const handlePublicKeyChange = (evt) => {
+    const newPublicKey = evt.target.value;
+    setPublicKey(newPublicKey);
+    const isAuthorized = Authentificator(address, newPublicKey);
+    // Do something with isAuthorized
+  };
+
+  // Checks and updates user balance
+  const handleCheckBalance = () => {
+    const foundUser = findUserByAddress(address);
     if (foundUser) {
-      this.setState({ balance: foundUser.balance });
+      setBalance(foundUser.balance);
     } else {
-      // Якщо адрес не знайдено, можна встановити баланс в 0 або вивести повідомлення
-      this.setState({ balance: 0 });
-       alert("Адрес не знайдено");
+      setBalance(0);
+      alert("Address not found");
     }
-  }
+  };
 
-  findUserByAddress = (address) => {
-    // Пошук користувача за адресою у масиві arr
+  // Finds a user by their address in the accounts array
+  const findUserByAddress = (address) => {
     return arr.find((user) => user.address === address);
-  }
-  render() {
-    return (
-      <div className="container wallet">
-        <h1>Your Wallet</h1>
-        <LogInComponent onLogin={this.handleLogin} />
+  };
+
+  // Handles changes to recipient's public key input field
+  const handleRecipientPublicKeyChange = (evt) => {
+    const recipientPK = evt.target.value;
+    setRecipientAddress(recipientPK);
+    const foundRecipientPubK = RecipientPubK(recipientPK);
+    // Do something with foundRecipientPubK
+  };
+
+  // JSX for the Wallet component
+  return (
+    <div className="container wallet">
+      <h1>Your Wallet</h1>
+      <LogInComponent onLogin={handleLogin} />
+
+      {/* User address input */}
+      <input
+        placeholder="Type an address, e.g., 0x..."
+        type="text"
+        onChange={handleAddressChange}
+      />
+
+      {/* User public key input */}
+      <input
+        placeholder="Type your public key, e.g., 765dhb..."
+        type="text"
+        onChange={handlePublicKeyChange}
+      />
+
+      {/* Display user balance */}
+      <div className="balance">Balance: {balance}</div>
+
+      {/* Button to check user balance */}
+      <button className="button" onClick={handleCheckBalance}>Check Balance</button>
+
+      <h3>Your Data</h3>
+      <p>Keep your private key secret!</p>
+
+      {/* Display user data */}
+      <div className="usersData">
+        <p>Address: {address}</p>
+        <p>Balance: {balance}</p>
+        <p>Public Key: {publicKey}</p>
+        <p>Private Key: {privateKey}</p>
+      </div>
+
+      {/* Input for recipient's public key */}
+      <div className="recipientPublicKey">
         <input
-            type="text"
-           // value={this.state.address}
-            onChange={this.handleAddressChange}
-
-          />
-        <div className="balance">Balance: {this.state.balance}</div>
-         <button onClick={this.handleCheckBalance}>Check Balance</button>
-         {/* <Transfer senderAddress={this.state.address} /> */}
-        <h3>Your Data</h3>
-        <p>Keep your privat key in secret !</p>
-        <div className="usersData">
-       <p> Address: {this.state.address}</p>
-       <p>Balance:  {this.state.balance}  </p> 
-       <p> Public Key:  {this.state.publicKey}</p>
-       <p> Privat Key:  {this.state.privatKey}</p>
-        </div>
+          placeholder="Type an address, e.g., 0xwad..."
+          type="text"
+          onChange={handleRecipientPublicKeyChange}
+        />
+        {/* Button to perform recipient public key related action */}
       </div>
-    );
-  }
-}
+    </div>
+  );
+};
 
 export default Wallet;
diff --git a/client/src/Wallet.scss b/client/src/Wallet.scss
new file mode 100644
index 00000000..71afed09
--- /dev/null
+++ b/client/src/Wallet.scss
@@ -0,0 +1,78 @@
+// Wallet.scss
+
+$primaryColor: #33ff33;
+$backgroundColor: #111;
+$textColor: #33ff33;
+
+.wallet {
+  background-color: $backgroundColor;
+  color: $textColor;
+  padding: 40px;
+  border-radius: 10px;
+  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
+
+  h1 {
+    font-size: 24px;
+    margin-bottom: 20px;
+  }
+
+  
+
+  .usersData {
+    margin-top: 20px;
+    p {
+      margin: 5px 0;
+    }
+  }
+
+  .recipientPublicKey {
+    margin-top: 30px;
+    input {
+      width: 100%;
+      padding: 10px;
+      border: none;
+      background-color: $primaryColor;
+      color: $backgroundColor;
+      border-radius: 6px;
+      margin-right: 10px;
+      margin-bottom: 10px;
+    }
+    .button {
+      background-color: #33ff33;
+      border: none;
+      border-radius: 6px;
+      padding: 12px 20px;
+      color: #000;
+      display: inline-flex;
+      text-transform: uppercase;
+      letter-spacing: 1px;
+      font-weight: 500;
+      font-size: 0.9rem;
+      cursor: pointer;
+      transition: background-color 0.3s ease-in-out;
+      &:hover {
+        background-color: #008800;
+      }
+    }
+    
+.balance {
+  background-color: transparent black ; // Set background-color to transparent
+  padding: 10px 20px;
+  border-radius: 6px;
+  margin-top: 10px;
+  text-transform: uppercase;
+  font-weight: 500;
+  font-size: 0.9rem;
+  position: relative; // Add position relative
+  z-index: 1; // Add a higher z-index to bring text above the background
+  &::before {
+    content: "Balance: "; // Add the text using pseudo-element
+    position: absolute;
+    left: 20px;
+    top: 50%;
+    transform: translateY(-50%);
+    color: black;
+  }
+}
+  }
+}
diff --git a/server/.gitignore b/server/.gitignore
index e69f6c6f..0fe94dd2 100644
--- a/server/.gitignore
+++ b/server/.gitignore
@@ -1,2 +1,4 @@
 !.gitignore
-node_modules
\ No newline at end of file
+node_modules
+src/package-lock.json
+src/package.json
diff --git a/server/package-lock.json b/server/package-lock.json
index ef68f93e..11ac581e 100644
--- a/server/package-lock.json
+++ b/server/package-lock.json
@@ -12,7 +12,8 @@
         "cors": "^2.8.5",
         "ethereum-cryptography": "^2.1.2",
         "express": "^4.18.1",
-        "react-router-dom": "^6.15.0"
+        "react-router-dom": "^6.15.0",
+        "secp256k1": "^5.0.0"
       }
     },
     "node_modules/@noble/curves": {
@@ -98,6 +99,11 @@
       "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
       "integrity": "sha512-PCVAQswWemu6UdxsDFFX/+gVeYqKAod3D3UVm91jHwynguOwAvYPhx8nNlM++NqRcK6CxxpUafjmhIdKiHibqg=="
     },
+    "node_modules/bn.js": {
+      "version": "4.12.0",
+      "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.12.0.tgz",
+      "integrity": "sha512-c98Bf3tPniI+scsdk237ku1Dc3ujXQTSgyiPUDEOe7tRkhrqridvh8klBv0HCEso1OLOYcHuCv/cS6DNxKH+ZA=="
+    },
     "node_modules/body-parser": {
       "version": "1.20.0",
       "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.20.0.tgz",
@@ -121,6 +127,11 @@
         "npm": "1.2.8000 || >= 1.4.16"
       }
     },
+    "node_modules/brorand": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/brorand/-/brorand-1.1.0.tgz",
+      "integrity": "sha512-cKV8tMCEpQs4hK/ik71d6LrPOnpkpGBR0wzxqr68g2m/LB2GxVYQroAjMJZRVM1Y4BCjCKc3vAamxSzOY2RP+w=="
+    },
     "node_modules/bytes": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.2.tgz",
@@ -215,6 +226,20 @@
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
       "integrity": "sha512-WMwm9LhRUo+WUaRN+vRuETqG89IgZphVSNkdFgeb6sS/E4OrDIN7t48CAewSHXc6C8lefD8KKfr5vY61brQlow=="
     },
+    "node_modules/elliptic": {
+      "version": "6.5.4",
+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.4.tgz",
+      "integrity": "sha512-iLhC6ULemrljPZb+QutR5TQGB+pdW6KGD5RSegS+8sorOZT+rdQFbsQFJgvN3eRqNALqJer4oQ16YvJHlU8hzQ==",
+      "dependencies": {
+        "bn.js": "^4.11.9",
+        "brorand": "^1.1.0",
+        "hash.js": "^1.0.0",
+        "hmac-drbg": "^1.0.1",
+        "inherits": "^2.0.4",
+        "minimalistic-assert": "^1.0.1",
+        "minimalistic-crypto-utils": "^1.0.1"
+      }
+    },
     "node_modules/encodeurl": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-1.0.2.tgz",
@@ -361,6 +386,25 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/hash.js": {
+      "version": "1.1.7",
+      "resolved": "https://registry.npmjs.org/hash.js/-/hash.js-1.1.7.tgz",
+      "integrity": "sha512-taOaskGt4z4SOANNseOviYDvjEJinIkRgmp7LbKP2YTTmVxWBl87s/uzK9r+44BclBSp2X7K1hqeNfz9JbBeXA==",
+      "dependencies": {
+        "inherits": "^2.0.3",
+        "minimalistic-assert": "^1.0.1"
+      }
+    },
+    "node_modules/hmac-drbg": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/hmac-drbg/-/hmac-drbg-1.0.1.tgz",
+      "integrity": "sha512-Tti3gMqLdZfhOQY1Mzf/AanLiqh1WTiJgEj26ZuYQ9fbkLomzGchCws4FyrSd4VkpBfiNhaE1On+lOz894jvXg==",
+      "dependencies": {
+        "hash.js": "^1.0.3",
+        "minimalistic-assert": "^1.0.0",
+        "minimalistic-crypto-utils": "^1.0.1"
+      }
+    },
     "node_modules/http-errors": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-2.0.0.tgz",
@@ -469,6 +513,16 @@
         "node": ">= 0.6"
       }
     },
+    "node_modules/minimalistic-assert": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz",
+      "integrity": "sha512-UtJcAD4yEaGtjPezWuO9wC4nwUnVH/8/Im3yEHQP4b67cXlD/Qr9hdITCU1xDbSEXg2XKNaP8jsReV7vQd00/A=="
+    },
+    "node_modules/minimalistic-crypto-utils": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz",
+      "integrity": "sha512-JIYlbt6g8i5jKfJ3xz7rF0LXmv2TkDxBLUkiBeZ7bAx4GnnNMr8xFpGnOxn6GhTEHx3SjRrZEoU+j04prX1ktg=="
+    },
     "node_modules/ms": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
@@ -482,6 +536,21 @@
         "node": ">= 0.6"
       }
     },
+    "node_modules/node-addon-api": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/node-addon-api/-/node-addon-api-5.1.0.tgz",
+      "integrity": "sha512-eh0GgfEkpnoWDq+VY8OyvYhFEzBk6jIYbRKdIlyTiAXIVJ8PyBaKb0rp7oDtoddbdoHWhq8wwr+XZ81F1rpNdA=="
+    },
+    "node_modules/node-gyp-build": {
+      "version": "4.6.0",
+      "resolved": "https://registry.npmjs.org/node-gyp-build/-/node-gyp-build-4.6.0.tgz",
+      "integrity": "sha512-NTZVKn9IylLwUzaKjkas1e4u2DLNcV4rdYagA4PWdPwW87Bi7z+BznyKSRwS/761tV/lzCGXplWsiaMjLqP2zQ==",
+      "bin": {
+        "node-gyp-build": "bin.js",
+        "node-gyp-build-optional": "optional.js",
+        "node-gyp-build-test": "build-test.js"
+      }
+    },
     "node_modules/object-assign": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
@@ -658,6 +727,20 @@
         "loose-envify": "^1.1.0"
       }
     },
+    "node_modules/secp256k1": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/secp256k1/-/secp256k1-5.0.0.tgz",
+      "integrity": "sha512-TKWX8xvoGHrxVdqbYeZM9w+izTF4b9z3NhSaDkdn81btvuh+ivbIMGT/zQvDtTFWhRlThpoz6LEYTr7n8A5GcA==",
+      "hasInstallScript": true,
+      "dependencies": {
+        "elliptic": "^6.5.4",
+        "node-addon-api": "^5.0.0",
+        "node-gyp-build": "^4.2.0"
+      },
+      "engines": {
+        "node": ">=14.0.0"
+      }
+    },
     "node_modules/send": {
       "version": "0.18.0",
       "resolved": "https://registry.npmjs.org/send/-/send-0.18.0.tgz",
@@ -828,6 +911,11 @@
       "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
       "integrity": "sha512-PCVAQswWemu6UdxsDFFX/+gVeYqKAod3D3UVm91jHwynguOwAvYPhx8nNlM++NqRcK6CxxpUafjmhIdKiHibqg=="
     },
+    "bn.js": {
+      "version": "4.12.0",
+      "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.12.0.tgz",
+      "integrity": "sha512-c98Bf3tPniI+scsdk237ku1Dc3ujXQTSgyiPUDEOe7tRkhrqridvh8klBv0HCEso1OLOYcHuCv/cS6DNxKH+ZA=="
+    },
     "body-parser": {
       "version": "1.20.0",
       "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.20.0.tgz",
@@ -847,6 +935,11 @@
         "unpipe": "1.0.0"
       }
     },
+    "brorand": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/brorand/-/brorand-1.1.0.tgz",
+      "integrity": "sha512-cKV8tMCEpQs4hK/ik71d6LrPOnpkpGBR0wzxqr68g2m/LB2GxVYQroAjMJZRVM1Y4BCjCKc3vAamxSzOY2RP+w=="
+    },
     "bytes": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.2.tgz",
@@ -916,6 +1009,20 @@
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
       "integrity": "sha512-WMwm9LhRUo+WUaRN+vRuETqG89IgZphVSNkdFgeb6sS/E4OrDIN7t48CAewSHXc6C8lefD8KKfr5vY61brQlow=="
     },
+    "elliptic": {
+      "version": "6.5.4",
+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.4.tgz",
+      "integrity": "sha512-iLhC6ULemrljPZb+QutR5TQGB+pdW6KGD5RSegS+8sorOZT+rdQFbsQFJgvN3eRqNALqJer4oQ16YvJHlU8hzQ==",
+      "requires": {
+        "bn.js": "^4.11.9",
+        "brorand": "^1.1.0",
+        "hash.js": "^1.0.0",
+        "hmac-drbg": "^1.0.1",
+        "inherits": "^2.0.4",
+        "minimalistic-assert": "^1.0.1",
+        "minimalistic-crypto-utils": "^1.0.1"
+      }
+    },
     "encodeurl": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-1.0.2.tgz",
@@ -1032,6 +1139,25 @@
       "resolved": "https://registry.npmjs.org/has-symbols/-/has-symbols-1.0.3.tgz",
       "integrity": "sha512-l3LCuF6MgDNwTDKkdYGEihYjt5pRPbEg46rtlmnSPlUbgmB8LOIrKJbYYFBSbnPaJexMKtiPO8hmeRjRz2Td+A=="
     },
+    "hash.js": {
+      "version": "1.1.7",
+      "resolved": "https://registry.npmjs.org/hash.js/-/hash.js-1.1.7.tgz",
+      "integrity": "sha512-taOaskGt4z4SOANNseOviYDvjEJinIkRgmp7LbKP2YTTmVxWBl87s/uzK9r+44BclBSp2X7K1hqeNfz9JbBeXA==",
+      "requires": {
+        "inherits": "^2.0.3",
+        "minimalistic-assert": "^1.0.1"
+      }
+    },
+    "hmac-drbg": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/hmac-drbg/-/hmac-drbg-1.0.1.tgz",
+      "integrity": "sha512-Tti3gMqLdZfhOQY1Mzf/AanLiqh1WTiJgEj26ZuYQ9fbkLomzGchCws4FyrSd4VkpBfiNhaE1On+lOz894jvXg==",
+      "requires": {
+        "hash.js": "^1.0.3",
+        "minimalistic-assert": "^1.0.0",
+        "minimalistic-crypto-utils": "^1.0.1"
+      }
+    },
     "http-errors": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-2.0.0.tgz",
@@ -1110,6 +1236,16 @@
         "mime-db": "1.52.0"
       }
     },
+    "minimalistic-assert": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz",
+      "integrity": "sha512-UtJcAD4yEaGtjPezWuO9wC4nwUnVH/8/Im3yEHQP4b67cXlD/Qr9hdITCU1xDbSEXg2XKNaP8jsReV7vQd00/A=="
+    },
+    "minimalistic-crypto-utils": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz",
+      "integrity": "sha512-JIYlbt6g8i5jKfJ3xz7rF0LXmv2TkDxBLUkiBeZ7bAx4GnnNMr8xFpGnOxn6GhTEHx3SjRrZEoU+j04prX1ktg=="
+    },
     "ms": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
@@ -1120,6 +1256,16 @@
       "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.3.tgz",
       "integrity": "sha512-+EUsqGPLsM+j/zdChZjsnX51g4XrHFOIXwfnCVPGlQk/k5giakcKsuxCObBRu6DSm9opw/O6slWbJdghQM4bBg=="
     },
+    "node-addon-api": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/node-addon-api/-/node-addon-api-5.1.0.tgz",
+      "integrity": "sha512-eh0GgfEkpnoWDq+VY8OyvYhFEzBk6jIYbRKdIlyTiAXIVJ8PyBaKb0rp7oDtoddbdoHWhq8wwr+XZ81F1rpNdA=="
+    },
+    "node-gyp-build": {
+      "version": "4.6.0",
+      "resolved": "https://registry.npmjs.org/node-gyp-build/-/node-gyp-build-4.6.0.tgz",
+      "integrity": "sha512-NTZVKn9IylLwUzaKjkas1e4u2DLNcV4rdYagA4PWdPwW87Bi7z+BznyKSRwS/761tV/lzCGXplWsiaMjLqP2zQ=="
+    },
     "object-assign": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
@@ -1236,6 +1382,16 @@
         "loose-envify": "^1.1.0"
       }
     },
+    "secp256k1": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/secp256k1/-/secp256k1-5.0.0.tgz",
+      "integrity": "sha512-TKWX8xvoGHrxVdqbYeZM9w+izTF4b9z3NhSaDkdn81btvuh+ivbIMGT/zQvDtTFWhRlThpoz6LEYTr7n8A5GcA==",
+      "requires": {
+        "elliptic": "^6.5.4",
+        "node-addon-api": "^5.0.0",
+        "node-gyp-build": "^4.2.0"
+      }
+    },
     "send": {
       "version": "0.18.0",
       "resolved": "https://registry.npmjs.org/send/-/send-0.18.0.tgz",
diff --git a/server/package.json b/server/package.json
index d2790322..65e4e511 100644
--- a/server/package.json
+++ b/server/package.json
@@ -14,6 +14,7 @@
     "cors": "^2.8.5",
     "ethereum-cryptography": "^2.1.2",
     "express": "^4.18.1",
-    "react-router-dom": "^6.15.0"
+    "react-router-dom": "^6.15.0",
+    "secp256k1": "^5.0.0"
   }
 }
diff --git a/server/scripts/HashMessage.js b/server/scripts/HashMessage.js
new file mode 100644
index 00000000..3eabf40e
--- /dev/null
+++ b/server/scripts/HashMessage.js
@@ -0,0 +1,23 @@
+import { utf8ToBytes } from "ethereum-cryptography/utils.js";
+import { toHex } from "ethereum-cryptography/utils.js";
+
+export function HashMessage(recipientAddress, senderAddress, Amount) {
+  const recipient = recipientAddress;
+  const address = senderAddress;
+  const amount = Amount;
+  // Convert your input strings to Uint8Arrays before concatenating
+  const recipientBytes = utf8ToBytes(recipient);
+  const addressBytes = utf8ToBytes(address);
+  const amountBytes = utf8ToBytes(amount);
+  
+  // Concatenate the bytes of recipient, address, and amount
+  const combinedDataUTF8 = new Uint8Array([
+    ...recipientBytes,
+    ...addressBytes,
+    ...amountBytes
+  ]);
+
+  // Hash the combined data using keccak256
+  const hash = toHex(combinedDataUTF8);
+  return hash;
+}
diff --git a/server/scripts/Signification.js b/server/scripts/Signification.js
new file mode 100644
index 00000000..f33d70a1
--- /dev/null
+++ b/server/scripts/Signification.js
@@ -0,0 +1,10 @@
+import { secp256k1 } from "ethereum-cryptography/secp256k1.js";
+import { HashMessage } from "./HashMessage.js";
+
+
+export function Sign (recipientAddress,senderAddress,Amount,privateKey){
+    const msgHash = HashMessage(recipientAddress,senderAddress,Amount);
+    const sign = secp256k1.sign(msgHash,privateKey)
+
+    return sign;
+}
\ No newline at end of file
diff --git a/server/scripts/accounts_array.js b/server/scripts/accounts_array.js
index f92aed45..51f49467 100644
--- a/server/scripts/accounts_array.js
+++ b/server/scripts/accounts_array.js
@@ -13,7 +13,6 @@ export function UsersData() {
   };
 
   arr.push(userData); // Додаємо об'єкт userData до масиву
-  //debugger;
   return userData;
 }
 
diff --git a/server/scripts/authentificator.js b/server/scripts/authentificator.js
new file mode 100644
index 00000000..6d6fd8ac
--- /dev/null
+++ b/server/scripts/authentificator.js
@@ -0,0 +1,24 @@
+import{ arr} from "./accounts_array.js";
+
+export const addressPubKey = [];
+
+export const Authentificator = async (newAddress, newPublicKey) => {
+     let pushToAddressPK = arr
+        .filter(item => item.address === newAddress && item.publicKey === newPublicKey)
+        .map(item => ({ address: item.address, publicKey: item.publicKey }));
+        
+    if (pushToAddressPK.length > 0) {
+        pushToAddressPK ={
+            address: newAddress,
+            publicKey: newPublicKey
+        }
+        console.log(`Public key is valid`);
+        console.log(pushToAddressPK);
+    } else {
+        console.log(`public key is unvalid`);
+        return [];
+    }
+    addressPubKey.push(pushToAddressPK);
+    console.log(addressPubKey);
+    return pushToAddressPK;
+};
diff --git a/server/scripts/balance_operation.js b/server/scripts/balance_operation.js
index 3fa1d177..1e08fe40 100644
--- a/server/scripts/balance_operation.js
+++ b/server/scripts/balance_operation.js
@@ -1,6 +1,5 @@
 import { arr } from "../../server/scripts/accounts_array.js";
-import Transfer from "../../client/src/Transfer.jsx"
-import Wallet from "../../client/src/Wallet.jsx";
+
  class Operation{
    RecipientChange  (recipient){
       const recipientObj = arr.find(item => item.address === recipient);
@@ -11,18 +10,25 @@ import Wallet from "../../client/src/Wallet.jsx";
       const senderObj = arr.find(item => item.address === senderAddress); 
         return senderObj;
     }
-      //перевірити відносно валет
+
       updateBalanceForRecipient(recipient, sendAmount) {
-        const updatedArr = arr.map(recipient => recipient.balance += sendAmount);
-        console.log(recipient.balance);
-        return updatedArr;
-      }
-    
-      updateBalanceForSender(senderAddress, sendAmount) {
-        const updatedArr = arr.map(senderAddress => senderAddress.balance -= sendAmount);
-        console.log(senderAddress.balance);
-        return updatedArr;
-      }
+      arr.forEach(item => {
+        if (item.address === recipient.address) {
+          item.balance += parseInt(sendAmount);
+        }
+      });
+      return arr;
     }
     
+    updateBalanceForSender(senderAddress, sendAmount) {
+      arr.forEach(item => {
+        if (item.address === senderAddress.address) {
+          item.balance -= parseInt(sendAmount);
+        }
+      });
+      return arr;
+    }
+       
+ }
+
 export default Operation;
\ No newline at end of file
diff --git a/server/scripts/logs.js b/server/scripts/logs.js
index f6d7b2ed..1b500ad8 100644
--- a/server/scripts/logs.js
+++ b/server/scripts/logs.js
@@ -5,15 +5,16 @@ import { getRandomBytesSync } from "ethereum-cryptography/random.js";
 export const AddressConfig = {
      privatKeyGen (privateKey){
         return privateKey = toHex(secp256k1.utils.randomPrivateKey());
+
     },
      addressGen (address){
-        return address = "0x"+toHex(getRandomBytesSync(20));
+        return address = "0x"+toHex(getRandomBytesSync());
     },
     balanceLog (){
         return 100;
     },
     publicKeyGen (publicKey){
-        return publicKey = toHex(secp256k1.getPublicKey(this.privatKeyGen()));
+        return publicKey = toHex(secp256k1.getPublicKey(secp256k1.utils.randomPrivateKey()));
     }
 
 }
@@ -23,9 +24,9 @@ export default class bebra{
     }
 }
 
-    //  console.log(AddressConfig.addressGen());
-    //  console.log(AddressConfig.balanceLog());
-    //  console.log(AddressConfig.privatKeyGen());
-    //  console.log(AddressConfig.publicKeyGen());
+     console.log(AddressConfig.addressGen());
+     console.log(AddressConfig.balanceLog());
+     console.log(AddressConfig.privatKeyGen());
+     console.log(AddressConfig.publicKeyGen());
 
 
diff --git a/server/scripts/recipient_pub_key.js b/server/scripts/recipient_pub_key.js
new file mode 100644
index 00000000..f034d0f1
--- /dev/null
+++ b/server/scripts/recipient_pub_key.js
@@ -0,0 +1,7 @@
+import { addressPubKey } from "./authentificator.js";
+
+export const RecipientPubK = (addressRecipient)=>{
+    const recipientPubKeyPairs = addressPubKey.filter(item => item.address === addressRecipient);
+    console.log(recipientPubKeyPairs);
+    return recipientPubKeyPairs;
+}
\ No newline at end of file
diff --git a/server/scripts/verification.js b/server/scripts/verification.js
new file mode 100644
index 00000000..a66ffe3e
--- /dev/null
+++ b/server/scripts/verification.js
@@ -0,0 +1,19 @@
+import { secp256k1 } from "ethereum-cryptography/secp256k1.js";
+import { HashMessage } from "./HashMessage.js";
+import { keccak256 } from "ethereum-cryptography/keccak.js";
+import { hexToBytes, utf8ToBytes } from "ethereum-cryptography/utils.js";
+import { toHex } from "ethereum-cryptography/utils.js";
+
+
+
+export function veryfication(makeSign,recipientAddress,senderAddress,Amount,publicKey) {
+    const msgHash = HashMessage(recipientAddress,senderAddress,Amount);
+    const validation  = new secp256k1.Signature(makeSign.r,makeSign.s,makeSign.recovery);
+    let sign = validation.recoverPublicKey(msgHash,makeSign,makeSign.recovery);
+    const validity = secp256k1.verify(validation,msgHash,publicKey);
+    console.log(sign);
+    console.log(validation)
+    console.log(validity);
+    return validity;
+}
+