diff --git a/modulo7/introducao-autenticacao/.gitignore b/modulo7/introducao-autenticacao/.gitignore
new file mode 100644
index 0000000..eb337e0
--- /dev/null
+++ b/modulo7/introducao-autenticacao/.gitignore
@@ -0,0 +1,4 @@
+node_modules 
+package-lock.json
+ build
+ .env
diff --git a/modulo7/introducao-autenticacao/package.json b/modulo7/introducao-autenticacao/package.json
new file mode 100644
index 0000000..6e8daed
--- /dev/null
+++ b/modulo7/introducao-autenticacao/package.json
@@ -0,0 +1,31 @@
+{
+    "name": "to-do-list",
+    "version": "1.0.0",
+    "main": "index.js",
+    "scripts": {
+        "start": "tsc && node --inspect ./build/index.js",
+        "dev": "tsnd --transpile-only --ignore-watch node_modules ./src/index.ts",
+        "test": "ts-node-dev ./src/services/authenticator.ts"
+    },
+    "author": "Labenu",
+    "license": "ISC",
+    "dependencies": {
+        "@types/jsonwebtoken": "^8.5.8",
+        "@types/uuid": "^8.3.4",
+        "cors": "^2.8.5",
+        "dotenv": "^8.2.0",
+        "express": "^4.17.1",
+        "jsonwebtoken": "^8.5.1",
+        "knex": "^0.21.5",
+        "mysql": "^2.18.1",
+        "uuid": "^8.3.2"
+    },
+    "devDependencies": {
+        "@types/cors": "^2.8.8",
+        "@types/express": "^4.17.8",
+        "@types/knex": "^0.16.1",
+        "@types/node": "^14.11.2",
+        "ts-node-dev": "^1.0.0-pre.63",
+        "typescript": "4.6.4"
+    }
+}
diff --git a/modulo7/introducao-autenticacao/requests.rest b/modulo7/introducao-autenticacao/requests.rest
new file mode 100644
index 0000000..fa18261
--- /dev/null
+++ b/modulo7/introducao-autenticacao/requests.rest
@@ -0,0 +1,32 @@
+
+POST http://localhost:3003/user/signup
+Content-Type: application/json
+
+{
+   "name": "Locke", 
+   "nickname": "barrigudinho", 
+   "email": "locke@gmail.com" ,
+   "password": "156374"
+}
+
+###
+
+POST http://localhost:3003/user/login
+Content-Type: application/json
+
+{
+
+   "email": "locke@gmail.com" ,
+   "password": "156374"
+}
+
+###
+
+PUT http://localhost:3003/user/edit/
+Authorization: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpZCI6IjdlYTk2Yzg1LTZlNDItNGU2Ny04MmYwLWUwMmVmMzUyM2M3YiIsImlhdCI6MTY2MDYwNjU5NywiZXhwIjoxNjYwNjEwMTk3fQ._v-3r5TVEx4WwRQIu6fFDV-l7uGyN-MOSvMToHL-IPA
+Content-Type: application/json
+
+{
+   "name": "Lolo",
+   "nickname": "lambelambe" 
+}
\ No newline at end of file
diff --git a/modulo7/introducao-autenticacao/src/business/UserBusiness.ts b/modulo7/introducao-autenticacao/src/business/UserBusiness.ts
new file mode 100644
index 0000000..67faed4
--- /dev/null
+++ b/modulo7/introducao-autenticacao/src/business/UserBusiness.ts
@@ -0,0 +1,107 @@
+import { UserDatabase } from "../data/UserDatabase";
+import {CustomError,InvalidEmail,InvalidName,InvalidPassword,UserNotFound,} from "../error/customError";
+import {UserInputDTO,user,EditUserInputDTO,EditUserInput,} from "../model/user";
+import { Authenticator } from "../services/Authenticator";
+import { IdGenerator } from "../services/IdGenerator";
+
+const idGenerator = new IdGenerator();
+const authenticator = new Authenticator();
+
+export class UserBusiness {
+  public signup = async (input: UserInputDTO): Promise<string> => {
+    try {
+      const { name, nickname, email, password } = input;
+
+      if (!name || !nickname || !email || !password) {
+        throw new CustomError(
+          400,
+          'Preencha os campos "name","nickname", "email" e "password"'
+        );
+      }
+
+      if (name.length < 4) {
+        throw new InvalidName();
+      }
+
+      if (!email.includes("@")) {
+        throw new InvalidEmail();
+      }
+
+      const id: string = idGenerator.generateId();
+
+      const user: user = {
+        id,
+        name,
+        nickname,
+        email,
+        password,
+      };
+      const userDatabase = new UserDatabase();
+      await userDatabase.insertUser(user);
+
+      const token = authenticator.generateToken({ id });
+      return token;
+    } catch (error: any) {
+      throw new CustomError(400, error.message);
+    }
+  };
+
+  public login = async (input: any): Promise<string> => {
+    try {
+      const { email, password } = input;
+
+      if (!email || !password) {
+        throw new CustomError(400, 'Preencha os campos "email" e "password"');
+      }
+
+      if (!email.includes("@")) {
+        throw new InvalidEmail();
+      }
+      const userDatabase = new UserDatabase();
+      const user = await userDatabase.findUserByEmail(email);
+
+      if (!user) {
+        throw new UserNotFound();
+      }
+
+      if (user.password !== password) {
+        throw new InvalidPassword();
+      }
+
+      const id = user.id
+      const token = authenticator.generateToken({ id});
+      return token;
+    } catch (error: any) {
+      throw new CustomError(400, error.message);
+    }
+  };
+
+  public editUser = async (input: EditUserInputDTO) => {
+    try {
+      const { name, nickname, token } = input;
+
+      if (!name || !nickname) {
+        throw new CustomError(
+          400,
+          'Preencha os campos , "name" e "nickname"'
+        );
+      }
+      const {id} = authenticator.getTokenData(token)
+      
+      if (name.length < 4) {
+        throw new InvalidName();
+      }
+
+      const editUserInput: EditUserInput = {
+        id,
+        name,
+        nickname,
+      };
+
+      const userDatabase = new UserDatabase();
+      await userDatabase.editUser(editUserInput);
+    } catch (error: any) {
+      throw new CustomError(400, error.message);
+    }
+  };
+}
diff --git a/modulo7/introducao-autenticacao/src/controller/UserController.ts b/modulo7/introducao-autenticacao/src/controller/UserController.ts
new file mode 100644
index 0000000..a2c19ea
--- /dev/null
+++ b/modulo7/introducao-autenticacao/src/controller/UserController.ts
@@ -0,0 +1,65 @@
+import { Request, Response } from "express";
+import { UserBusiness } from "../business/UserBusiness";
+import { EditUserInputDTO, LoginInputDTO, UserInputDTO } from "../model/user";
+
+export class UserController {
+
+      public signup = async (req: Request, res: Response) => {
+        try {
+          const { name, nickname, email, password } = req.body;
+    
+          const input: UserInputDTO = {
+            name,
+            nickname,
+            email,
+            password,
+          };
+          const userBusiness = new UserBusiness()
+          const token = await userBusiness.signup(input);
+    
+          res.status(201).send({ message: "Usuário criado!", token });
+        } catch (error: any) {
+          res.status(400).send(error.message);
+        }
+      };    
+
+      public login = async (req: Request, res: Response) => {
+        try {
+          const { email, password } = req.body;
+    
+          const input: LoginInputDTO = {
+            email,
+            password,
+          };
+
+          const userBusiness = new UserBusiness()
+          const token = await userBusiness.login(input);
+    
+          res.status(200).send({token});
+        } catch (error: any) {
+          res.status(400).send(error.message);
+        }
+      };    
+
+      public editUser = async (req: Request, res: Response) => {
+        try {
+          
+          const input: EditUserInputDTO = {
+            name: req.body.name,
+            nickname: req.body.nickname,
+            token: req.headers.authorization as string
+          };
+
+          const userBusiness = new UserBusiness()
+          await userBusiness.editUser(input);
+    
+          res.status(201).send({ message: "Usuário alterado!" });
+        } catch (error: any) {
+          res.status(400).send(error.message);
+        }
+      }; 
+ 
+
+
+
+}
diff --git a/modulo7/introducao-autenticacao/src/controller/app.ts b/modulo7/introducao-autenticacao/src/controller/app.ts
new file mode 100644
index 0000000..32e736f
--- /dev/null
+++ b/modulo7/introducao-autenticacao/src/controller/app.ts
@@ -0,0 +1,13 @@
+import express from 'express'
+import cors from 'cors'
+
+const app = express()
+
+app.use(express.json())
+app.use(cors())
+
+app.listen(3003, ()=>{
+    console.log('Servidor rodando na porta 3003')
+})
+
+export default app
\ No newline at end of file
diff --git a/modulo7/introducao-autenticacao/src/controller/userRouter.ts b/modulo7/introducao-autenticacao/src/controller/userRouter.ts
new file mode 100644
index 0000000..a225cb0
--- /dev/null
+++ b/modulo7/introducao-autenticacao/src/controller/userRouter.ts
@@ -0,0 +1,12 @@
+import express from "express";
+
+import { UserController } from "../controller/UserController";
+
+export const userRouter = express.Router()
+
+const userController = new UserController()
+
+userRouter.post('/signup', userController.signup)
+userRouter.post('/login', userController.login)
+
+userRouter.put('/edit',userController.editUser )
diff --git a/modulo7/introducao-autenticacao/src/data/BaseDatabase.ts b/modulo7/introducao-autenticacao/src/data/BaseDatabase.ts
new file mode 100644
index 0000000..c1578b7
--- /dev/null
+++ b/modulo7/introducao-autenticacao/src/data/BaseDatabase.ts
@@ -0,0 +1,21 @@
+import knex from 'knex'
+import dotenv from 'dotenv'
+
+dotenv.config()
+
+export 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
+      }
+   })
+
+}
+
diff --git a/modulo7/introducao-autenticacao/src/data/UserDatabase.ts b/modulo7/introducao-autenticacao/src/data/UserDatabase.ts
new file mode 100644
index 0000000..ec68130
--- /dev/null
+++ b/modulo7/introducao-autenticacao/src/data/UserDatabase.ts
@@ -0,0 +1,44 @@
+import { CustomError } from "../error/customError";
+import { EditUserInput, user } from "../model/user";
+import { BaseDatabase } from "./BaseDatabase";
+
+export class UserDatabase extends BaseDatabase {
+  public insertUser = async (user: user) => {
+    try {
+      await UserDatabase.connection
+        .insert({
+          id: user.id,
+          name: user.name,
+          nickname: user.nickname,
+          email: user.email,
+          password: user.password,
+        })
+        .into("Auth_users");
+    } catch (error: any) {
+      throw new CustomError(400, error.message);
+    }
+  };
+
+  public editUser = async (user: EditUserInput) => {
+    try {
+      await UserDatabase.connection
+        .update({ name: user.name, nickname: user.nickname })
+        .where({ id: user.id })
+        .into("Auth_users");
+    } catch (error: any) {
+      throw new CustomError(400, error.message);
+    }
+  };
+
+  public findUserByEmail = async (email: string): Promise<user> => {
+    try {
+      const result = await UserDatabase.connection("Auth_users")
+        .select()
+        .where({ email });
+
+      return result[0];
+    } catch (error: any) {
+      throw new CustomError(400, error.message);
+    }
+  };
+}
diff --git a/modulo7/introducao-autenticacao/src/error/customError.ts b/modulo7/introducao-autenticacao/src/error/customError.ts
new file mode 100644
index 0000000..370d3e1
--- /dev/null
+++ b/modulo7/introducao-autenticacao/src/error/customError.ts
@@ -0,0 +1,35 @@
+export class CustomError extends Error {
+    constructor(statusCode: number, message: string){
+        super(message)
+    }
+}
+
+export class InvalidName extends CustomError{ 
+    constructor(){
+        super(400, "Nome inválido")
+    }
+}
+
+export class InvalidEmail extends CustomError{ 
+    constructor(){
+        super(400, "Email inválido")
+    }
+}
+
+export class InvalidPassword extends CustomError{ 
+    constructor(){
+        super(400, "Senha inválida")
+    }
+}
+
+export class UserNotFound extends CustomError{ 
+    constructor(){
+        super(404, "Usuário não encontrado")
+    }
+}
+
+export class Unauthorized extends CustomError{ 
+    constructor(){
+        super(401, "Usuário não não authorizado, faça login novamente")
+    }
+}
\ No newline at end of file
diff --git a/modulo7/introducao-autenticacao/src/index.ts b/modulo7/introducao-autenticacao/src/index.ts
new file mode 100644
index 0000000..aa04b7d
--- /dev/null
+++ b/modulo7/introducao-autenticacao/src/index.ts
@@ -0,0 +1,5 @@
+import app from "./controller/app"
+import { userRouter } from "./controller/userRouter"
+
+
+app.use('/user/', userRouter)
diff --git a/modulo7/introducao-autenticacao/src/model/user.ts b/modulo7/introducao-autenticacao/src/model/user.ts
new file mode 100644
index 0000000..35ca925
--- /dev/null
+++ b/modulo7/introducao-autenticacao/src/model/user.ts
@@ -0,0 +1,31 @@
+export type user = {
+   id: string
+   email: string
+   password: string
+   name: string
+   nickname: string
+}
+
+export interface UserInputDTO {
+   name: string,
+   nickname: string,
+   email: string,
+   password: string
+}
+
+export interface EditUserInputDTO {
+   name: string,
+   nickname: string,
+   token: string
+}
+
+export interface EditUserInput {
+   name: string,
+   nickname: string,
+   id: string
+}
+
+export interface LoginInputDTO {
+   email: string,
+   password: string
+}
\ No newline at end of file
diff --git a/modulo7/introducao-autenticacao/src/services/Authenticator.ts b/modulo7/introducao-autenticacao/src/services/Authenticator.ts
new file mode 100644
index 0000000..4be57d9
--- /dev/null
+++ b/modulo7/introducao-autenticacao/src/services/Authenticator.ts
@@ -0,0 +1,29 @@
+import * as jwt from "jsonwebtoken";
+import { Unauthorized } from "../error/customError";
+
+export type AuthenticationData = {
+  id: string,
+};
+
+export class Authenticator {
+  generateToken = ({ id }: AuthenticationData): string => {
+    const token = jwt.sign({ id }, process.env.JWT_KEY as string, {
+      expiresIn: process.env.JWT_DURATION,
+    });
+    return token;
+  };
+
+  getTokenData = (token: string): AuthenticationData => {
+    try {
+      const payload = jwt.verify(
+        token,
+        process.env.JWT_KEY as string
+      ) as AuthenticationData;
+      return payload;
+    } catch (error: any) {
+      console.log(error.message)
+      throw new Unauthorized()
+    }
+
+  };
+}
diff --git a/modulo7/introducao-autenticacao/src/services/IdGenerator.ts b/modulo7/introducao-autenticacao/src/services/IdGenerator.ts
new file mode 100644
index 0000000..7574c54
--- /dev/null
+++ b/modulo7/introducao-autenticacao/src/services/IdGenerator.ts
@@ -0,0 +1,8 @@
+import { v4 } from "uuid"
+
+
+export class IdGenerator {
+    generateId = () => {
+        return v4()
+    }
+}
\ No newline at end of file
diff --git a/modulo7/introducao-autenticacao/tables.sql b/modulo7/introducao-autenticacao/tables.sql
new file mode 100644
index 0000000..6787d50
--- /dev/null
+++ b/modulo7/introducao-autenticacao/tables.sql
@@ -0,0 +1,27 @@
+
+CREATE TABLE IF NOT EXISTS Auth_users (
+    id VARCHAR(64) PRIMARY KEY,
+    name VARCHAR(64) NOT NULL,
+    nickname VARCHAR(64) NOT NULL,
+    email VARCHAR(64) NOT NULL,
+    password VARCHAR(64) NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS Auth_tasks (
+    id VARCHAR(64) PRIMARY KEY,
+    title VARCHAR(64) NOT NULL,
+    description VARCHAR(1024) DEFAULT "No description provided",
+    deadline DATE,
+    status ENUM("TO_DO", "DOING", "DONE") DEFAULT "TO_DO",
+    author_id VARCHAR(64),
+    FOREIGN KEY (author_id) REFERENCES Auth_users(id)
+);
+
+CREATE TABLE IF NOT EXISTS Auth_assignees (
+    task_id VARCHAR(64),
+    assignee_id VARCHAR(64),
+    PRIMARY KEY (task_id, assignee_id),
+    FOREIGN KEY (task_id) REFERENCES Auth_tasks(id),
+    FOREIGN KEY (assignee_id) REFERENCES Auth_users(id)
+);
+
diff --git a/modulo7/introducao-autenticacao/tsconfig.json b/modulo7/introducao-autenticacao/tsconfig.json
new file mode 100644
index 0000000..8c020cc
--- /dev/null
+++ b/modulo7/introducao-autenticacao/tsconfig.json
@@ -0,0 +1,14 @@
+{
+   "compilerOptions": {
+      "target": "es6",
+      "module": "commonjs",
+      "outDir": "./build",
+      "rootDir": "./src",
+      "removeComments": true,
+      "strict": true,
+      "noImplicitAny": true,
+      "esModuleInterop": true,
+      "skipLibCheck": true,
+      "forceConsistentCasingInFileNames": true
+   }
+}
\ No newline at end of file