diff --git a/modulo6/case4-doghero/.gitignore b/modulo6/case4-doghero/.gitignore
new file mode 100644
index 0000000..8ece3ba
--- /dev/null
+++ b/modulo6/case4-doghero/.gitignore
@@ -0,0 +1,4 @@
+node_modules
+package-lock.json
+build
+.env
\ No newline at end of file
diff --git a/modulo6/case4-doghero/package.json b/modulo6/case4-doghero/package.json
new file mode 100644
index 0000000..599891f
--- /dev/null
+++ b/modulo6/case4-doghero/package.json
@@ -0,0 +1,36 @@
+{
+  "name": "case4-doghero",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "start:dev": "ts-node-dev ./src/index.ts",
+    "start": "tsc && node ./build/index.js",
+    "build": "tsc",
+    "dev": "ts-node-dev ./src/index.ts",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "devDependencies": {
+    "@types/cors": "^2.8.12",
+    "@types/express": "^4.17.13",
+    "@types/knex": "^0.16.1",
+    "knex": "^2.1.0",
+    "mysql": "^2.18.1",
+    "ts-node-dev": "^2.0.0",
+    "typescript": "^4.7.3"
+  },
+  "dependencies": {
+    "@types/bcryptjs": "^2.4.2",
+    "@types/jsonwebtoken": "^8.5.8",
+    "@types/uuid": "^8.3.4",
+    "bcryptjs": "^2.4.3",
+    "cors": "^2.8.5",
+    "dotenv": "^16.0.1",
+    "express": "^4.18.1",
+    "jsonwebtoken": "^8.5.1",
+    "uuid": "^8.3.2"
+  }
+}
diff --git a/modulo6/case4-doghero/src/Services/Authenticator.ts b/modulo6/case4-doghero/src/Services/Authenticator.ts
new file mode 100644
index 0000000..4a859a0
--- /dev/null
+++ b/modulo6/case4-doghero/src/Services/Authenticator.ts
@@ -0,0 +1,32 @@
+import * as jwt from "jsonwebtoken";
+
+export class Authenticator {
+  public generateToken(input: AuthenticationData,
+    expiresIn: string = process.env.ACCESS_TOKEN_EXPIRES_IN!): string {
+    const token = jwt.sign(
+      {
+        id: input.id,
+        role: input.role
+      },
+      process.env.JWT_KEY as string,
+      {
+        expiresIn,
+      }
+    );
+    return token;
+  }
+
+  public getData(token: string): AuthenticationData {
+    const payload = jwt.verify(token, process.env.JWT_KEY as string) as any;
+    const result = {
+      id: payload.id,
+      role: payload.role
+    };
+    return result;
+  }
+}
+
+export interface AuthenticationData {
+  id: string;
+  role?: string;
+}
\ No newline at end of file
diff --git a/modulo6/case4-doghero/src/Services/HashManager.ts b/modulo6/case4-doghero/src/Services/HashManager.ts
new file mode 100644
index 0000000..45704fb
--- /dev/null
+++ b/modulo6/case4-doghero/src/Services/HashManager.ts
@@ -0,0 +1,17 @@
+import * as bcrypt from "bcryptjs";
+
+
+export class HashManager {
+
+    public async hash(text: string): Promise<string> {
+        const rounds = 12;
+        const salt = await bcrypt.genSalt(rounds);
+        const result = await bcrypt.hash(text, salt);
+        return result;
+    }
+
+    public async compare(text: string, hash: string): Promise<boolean>{
+        return await bcrypt.compare(text, hash);
+    }
+
+}
\ No newline at end of file
diff --git a/modulo6/case4-doghero/src/Services/IdGeneretor.ts b/modulo6/case4-doghero/src/Services/IdGeneretor.ts
new file mode 100644
index 0000000..3392265
--- /dev/null
+++ b/modulo6/case4-doghero/src/Services/IdGeneretor.ts
@@ -0,0 +1,7 @@
+import { v4 } from "uuid";
+
+export class IdGenerator{
+    public generate(): string{
+        return v4()
+    }
+}
\ No newline at end of file
diff --git a/modulo6/case4-doghero/src/Services/TokenGenerator.ts b/modulo6/case4-doghero/src/Services/TokenGenerator.ts
new file mode 100644
index 0000000..1e212ba
--- /dev/null
+++ b/modulo6/case4-doghero/src/Services/TokenGenerator.ts
@@ -0,0 +1,34 @@
+import * as jwt from "jsonwebtoken";
+import dotenv from "dotenv";
+
+dotenv.config();
+
+export class TokenGenerator {
+  private static expiresIn: number = 1200;
+
+  public generate = (input: AuthenticationData): string => {
+    const newToken = jwt.sign(
+      {
+        id: input.id,
+        role: input.role,
+      },
+      process.env.JWT_KEY as string,
+      {
+        expiresIn: TokenGenerator.expiresIn,
+      }
+    );
+    return newToken;
+  };
+
+  public verify(token: string) {
+    const payload = jwt.verify(token, process.env.JWT_KEY as string) as any;
+    const result = { id: payload.id, role: payload.role };
+    return result;
+  }
+}
+
+export interface AuthenticationData {
+  id: string;
+  role: string;
+}
+
diff --git a/modulo6/case4-doghero/src/data/BaseDatabase.ts b/modulo6/case4-doghero/src/data/BaseDatabase.ts
new file mode 100644
index 0000000..1d5f6bb
--- /dev/null
+++ b/modulo6/case4-doghero/src/data/BaseDatabase.ts
@@ -0,0 +1,21 @@
+import knex from 'knex'
+import dotenv from 'dotenv'
+
+dotenv.config()
+
+export abstract class BaseDatabase{
+   protected static connection = knex({
+     client: 'mysql',
+     connection: {
+        host: process.env.DB_HOST,
+        user: process.env.DB_USER,
+        password: process.env.DB_PASSWORD,
+        database: process.env.DB_SCHEMA,
+        port: 3306,
+        multipleStatements: true
+     }
+  })
+  public static async destroyConnection(): Promise<void> {
+    await BaseDatabase.connection.destroy();
+ }
+}
\ No newline at end of file
diff --git a/modulo6/case4-doghero/src/index.ts b/modulo6/case4-doghero/src/index.ts
new file mode 100644
index 0000000..b6224d0
--- /dev/null
+++ b/modulo6/case4-doghero/src/index.ts
@@ -0,0 +1,22 @@
+import express, {Express} from 'express'
+import cors from 'cors'
+import { AddressInfo } from 'net';
+import dotenv from "dotenv";
+const app: Express = express();
+
+dotenv.config();
+
+
+app.use(express.json());
+app.use(cors())
+
+
+
+const server = app.listen(process.env.PORT || 3003, () => {
+  if (server) {
+    const address = server.address() as AddressInfo;
+    console.log(`Servidor rodando em http://localhost:${address.port}`);
+  } else {
+    console.error(`Falha ao rodar o servidor.`);
+  }
+});
\ No newline at end of file
diff --git a/modulo6/case4-doghero/tsconfig.json b/modulo6/case4-doghero/tsconfig.json
new file mode 100644
index 0000000..b092733
--- /dev/null
+++ b/modulo6/case4-doghero/tsconfig.json
@@ -0,0 +1,12 @@
+{
+    "compilerOptions": {
+        "target": "es6", /* Specify ECMAScript target version */
+        "module": "commonjs", /* Specify module code generation */
+        "sourceMap": true, /* Generates corresponding '.map' file. */
+        "outDir": "./build", /* Redirect output structure to the directory. */
+        "rootDir": "./src", /* Specify the root directory of input files. */
+        "removeComments": true, /* Do not emit comments to output. */
+        "noImplicitAny": true, /* Raise error on declarations with an implied 'any' type. */
+        "strict": true,
+    }
+}
\ No newline at end of file