diff --git a/apps/backend/package.json b/apps/backend/package.json
index 11e7307..694691d 100644
--- a/apps/backend/package.json
+++ b/apps/backend/package.json
@@ -30,6 +30,7 @@
     "@types/jsonwebtoken": "^9.0.10",
     "@types/passport-local": "^1.0.38",
     "argon2": "^0.44.0",
+    "cookie-parser": "^1.4.7",
     "dayjs": "^1.11.13",
     "dotenv": "^17.2.1",
     "ejs": "^3.1.10",
@@ -53,6 +54,7 @@
     "@nestjs/testing": "^11.0.1",
     "@swc/cli": "^0.6.0",
     "@swc/core": "^1.10.7",
+    "@types/cookie-parser": "^1.4.9",
     "@types/ejs": "^3.1.5",
     "@types/express": "^5.0.0",
     "@types/jest": "^29.5.14",
diff --git a/apps/backend/src/app/auth/auth-core/auth-core.service.ts b/apps/backend/src/app/auth/auth-core/auth-core.service.ts
index 1c4ed33..bd10355 100644
--- a/apps/backend/src/app/auth/auth-core/auth-core.service.ts
+++ b/apps/backend/src/app/auth/auth-core/auth-core.service.ts
@@ -1,16 +1,25 @@
 import { Injectable } from '@nestjs/common';
 import { AuthRegistry } from './auth-registry';
 import * as dayjs from 'dayjs';
-import { isDefined, ResetAuth } from '@my-monorepo/common';
+import { AuthTokenPayload, isDefined, ResetAuth } from '@my-monorepo/common';
 import { CryptoService } from '../../../services/core/crypto/crypto.service';
+import { EnvService } from '../../../services/core/env/env.service';
 
 const RESET_TOKEN_VALIDITY_MINUTES = 15;
 
+const REFRESH_TOKEN_VALIDITY_DAYS = 7;
+
+export interface TokenWithHmac {
+  token: string;
+  hmac: string;
+}
+
 @Injectable()
 export class AuthCoreService {
   constructor(
     private authRegistry: AuthRegistry,
     private cryptoService: CryptoService,
+    private envService: EnvService,
   ) {}
 
   async addNewResetToken(
@@ -31,4 +40,41 @@ export class AuthCoreService {
     const res = await this.authRegistry.checkAndInvalidateResetToken(resetAuth);
     return res > 0;
   }
+
+  async addNewRefreshToken(userId: string): Promise<TokenWithHmac> {
+    const { token } = await this.authRegistry.addRefreshToken({
+      userId,
+      token: this.createUserAuthJwt({ userId }),
+      validUntil: dayjs().add(REFRESH_TOKEN_VALIDITY_DAYS, 'days'),
+    });
+
+    // TODO : add hash and return validity (req and in JWT)
+    return { token, hmac: this.generateAuthHmac(token) };
+  }
+
+  async verifyPassword(opts: {
+    hashedPassword: string;
+    plainTextPassword: string;
+  }): Promise<boolean> {
+    return this.cryptoService.verifyPassword(
+      opts.hashedPassword,
+      opts.plainTextPassword,
+    );
+  }
+
+  createAccessToken(userId: string): TokenWithHmac {
+    const token = this.createUserAuthJwt({ userId });
+    return { token, hmac: this.generateAuthHmac(token) };
+  }
+
+  private createUserAuthJwt(payload: AuthTokenPayload): string {
+    return this.cryptoService.createJwt(payload);
+  }
+
+  private generateAuthHmac(payload: string): string {
+    return this.cryptoService.generateHmac(
+      payload,
+      this.envService.config.secrets.authHmac,
+    );
+  }
 }
diff --git a/apps/backend/src/app/auth/auth-core/auth-registry.ts b/apps/backend/src/app/auth/auth-core/auth-registry.ts
index 06afc35..4742280 100644
--- a/apps/backend/src/app/auth/auth-core/auth-registry.ts
+++ b/apps/backend/src/app/auth/auth-core/auth-registry.ts
@@ -30,6 +30,22 @@ export class AuthRegistry {
       .executeTakeFirst();
   }
 
+  async addRefreshToken(opts: {
+    userId: string;
+    token: string;
+    validUntil: dayjs.Dayjs;
+  }): Promise<{ token: string; user_id: string }> {
+    return this.database
+      .insertInto('refresh_tokens')
+      .values({
+        user_id: opts.userId,
+        token: opts.token,
+        valid_until: opts.validUntil.toDate(),
+      })
+      .returning(['user_id', 'token'])
+      .executeTakeFirstOrThrow();
+  }
+
   async checkAndInvalidateResetToken(resetAuth: ResetAuth): Promise<bigint> {
     const res = await this.database
       .deleteFrom('reset_tokens')
diff --git a/apps/backend/src/app/auth/auth-feature/auth-controller.service.ts b/apps/backend/src/app/auth/auth-feature/auth-controller.service.ts
index f079b89..bcaca3c 100644
--- a/apps/backend/src/app/auth/auth-feature/auth-controller.service.ts
+++ b/apps/backend/src/app/auth/auth-feature/auth-controller.service.ts
@@ -1,12 +1,12 @@
+import { CredentialAuth, ResetAuth } from '@my-monorepo/common';
 import {
   Injectable,
   NotFoundException,
   UnauthorizedException,
 } from '@nestjs/common';
-import { UsersCoreService } from '../../users/users-core/users-core.service';
-import { AuthCoreService } from '../auth-core/auth-core.service';
-import { ResetAuth } from '@my-monorepo/common';
 import { CryptoService } from '../../../services/core/crypto/crypto.service';
+import { UsersCoreService } from '../../users/users-core/users-core.service';
+import { AuthCoreService, TokenWithHmac } from '../auth-core/auth-core.service';
 
 @Injectable()
 export class AuthControllerService {
@@ -16,11 +16,30 @@ export class AuthControllerService {
     private cryptoService: CryptoService,
   ) {}
 
-  async verifyCredentials() {
-    const isValidCredential = await this.userCoreService.existsEmailPassword();
-    if (!isValidCredential) {
+  async handleCredentialsAuth(credentials: CredentialAuth): Promise<{
+    refreshToken: TokenWithHmac;
+    accessToken: TokenWithHmac;
+  }> {
+    const userWithHash =
+      await this.userCoreService.getUserIdAndHashPass(credentials);
+    if (!userWithHash || !userWithHash.hash) {
       throw new UnauthorizedException('invalid credentials');
     }
+    const { userId, hash } = userWithHash;
+    const isPasswordValid = await this.authCoreService.verifyPassword({
+      hashedPassword: hash,
+      plainTextPassword: credentials.password,
+    });
+    if (!isPasswordValid) {
+      throw new UnauthorizedException('invalid credentials');
+    }
+
+    const refreshToken = await this.authCoreService.addNewRefreshToken(userId);
+    const accessToken = this.authCoreService.createAccessToken(userId);
+    return {
+      refreshToken,
+      accessToken,
+    };
   }
 
   async resetPassword(resetData: ResetAuth) {
diff --git a/apps/backend/src/app/auth/auth-feature/auth.controller.ts b/apps/backend/src/app/auth/auth-feature/auth.controller.ts
index f509117..a09007c 100644
--- a/apps/backend/src/app/auth/auth-feature/auth.controller.ts
+++ b/apps/backend/src/app/auth/auth-feature/auth.controller.ts
@@ -1,15 +1,66 @@
-import { Body, Controller, Post } from '@nestjs/common';
+import { Body, Controller, Post, Res } from '@nestjs/common';
 import { AuthControllerService } from './auth-controller.service';
 import { ZodValidationPipe } from '../../../lib/nestjs/zod-validation/zod-validation.pipe';
-import { ResetAuth, resetAuthParser } from '@my-monorepo/common';
+import {
+  CredentialAuth,
+  credentialAuthParser,
+  ResetAuth,
+  resetAuthParser,
+} from '@my-monorepo/common';
+import { Response } from 'express';
+import { EnvService, EnvType } from '../../../services/core/env/env.service';
+
+const REFRESH_TOKEN_COOKIE_NAME = 'refresh';
+const REFRESH_HASH_COOKIE_NAME = `${REFRESH_TOKEN_COOKIE_NAME}_hash`;
+const ACCESS_TOKEN_COOKIE_NAME = 'access';
+const ACCESS_HASH_COOKIE_NAME = `${ACCESS_TOKEN_COOKIE_NAME}_hash`;
 
 @Controller('auth')
 export class AuthController {
-  constructor(private authService: AuthControllerService) {}
+  constructor(
+    private authService: AuthControllerService,
+    private envService: EnvService,
+  ) {}
 
   @Post('credentials')
-  async postCredentials() {
-    return this.authService.verifyCredentials();
+  async postCredentials(
+    @Body(new ZodValidationPipe(credentialAuthParser))
+    credentials: CredentialAuth,
+    @Res({ passthrough: true }) response: Response,
+  ) {
+    const { accessToken, refreshToken } =
+      await this.authService.handleCredentialsAuth(credentials);
+
+    console.log('>>> paul-debug', {
+      httpOnly: true,
+      sameSite: 'strict',
+      domain: this.envService.config.app.domain,
+      secure: this.envService.config.app.envType === EnvType.Production,
+    });
+    response.cookie(REFRESH_TOKEN_COOKIE_NAME, refreshToken.token, {
+      httpOnly: true,
+      sameSite: 'strict',
+      domain: this.envService.config.app.domain,
+      secure: this.envService.config.app.envType === EnvType.Production,
+    });
+    response.cookie(REFRESH_HASH_COOKIE_NAME, refreshToken.hmac, {
+      httpOnly: false,
+      sameSite: 'strict',
+      domain: this.envService.config.app.domain,
+      secure: this.envService.config.app.envType === EnvType.Production,
+    });
+    response.cookie(ACCESS_TOKEN_COOKIE_NAME, accessToken.token, {
+      httpOnly: true,
+      sameSite: 'strict',
+      domain: this.envService.config.app.domain,
+      secure: this.envService.config.app.envType === EnvType.Production,
+    });
+    response.cookie(ACCESS_HASH_COOKIE_NAME, accessToken.hmac, {
+      httpOnly: false,
+      sameSite: 'strict',
+      domain: this.envService.config.app.domain,
+      secure: this.envService.config.app.envType === EnvType.Production,
+    });
   }
 
   @Post('reset')
diff --git a/apps/backend/src/app/users/users-core/users-core.service.ts b/apps/backend/src/app/users/users-core/users-core.service.ts
index b967c88..091b4f2 100644
--- a/apps/backend/src/app/users/users-core/users-core.service.ts
+++ b/apps/backend/src/app/users/users-core/users-core.service.ts
@@ -1,14 +1,18 @@
 import { Injectable } from '@nestjs/common';
 import { UsersRegistry } from './users-registry';
-import { CreateUser, Result, User } from '@my-monorepo/common';
+import { CreateUser, CredentialAuth, Result, User } from '@my-monorepo/common';
 import { UserEmailAlreadyExistError } from './users-error';
 
 @Injectable()
 export class UsersCoreService {
   constructor(private userRegistry: UsersRegistry) {}
 
-  async existsEmailPassword() {
-    return await this.userRegistry.existsEmailPassword('', '');
+  async getUserIdAndHashPass(
+    credentials: CredentialAuth,
+  ): Promise<{ userId: string; hash?: string } | undefined> {
+    return await this.userRegistry.getUserIdPasswordFromEmail(
+      credentials.email,
+    );
   }
 
   async addUser(
diff --git a/apps/backend/src/app/users/users-core/users-registry.ts b/apps/backend/src/app/users/users-core/users-registry.ts
index 88b6c57..da7e30c 100644
--- a/apps/backend/src/app/users/users-core/users-registry.ts
+++ b/apps/backend/src/app/users/users-core/users-registry.ts
@@ -11,16 +11,22 @@ export class UsersRegistry {
 
   constructor(private databaseService: DatabaseService) {}
 
-  async existsEmailPassword(email: string, hashedPassword: string) {
-    const id = await this.database
+  async getUserIdPasswordFromEmail(
+    email: string,
+  ): Promise<{ userId: string; hash?: string } | undefined> {
+    const user = await this.database
       .selectFrom('users')
-      .select('id')
-      .where((eb) => eb('email', '=', email).and('hash', '=', hashedPassword))
+      .select(['id', 'hash'])
+      .where((eb) => eb('email', '=', email))
       .executeTakeFirst();
 
-    return isDefined(id);
+    return isDefined(user)
+      ? {
+          userId: user.id,
+          hash: user.hash ?? undefined,
+        }
+      : undefined;
   }
-
   async addUser(
     newUser: CreateUser,
   ): Promise<Result<User, UserEmailAlreadyExistError>> {
diff --git a/apps/backend/src/database/db.d.ts b/apps/backend/src/database/db.d.ts
index 8cbaa37..a64a56b 100644
--- a/apps/backend/src/database/db.d.ts
+++ b/apps/backend/src/database/db.d.ts
@@ -13,6 +13,16 @@ export type Int8 = ColumnType<string, bigint | number | string, bigint | number
 
 export type Timestamp = ColumnType<Date, Date | string, Date | string>;
 
+export interface RefreshTokens {
+  created_at: Generated<Timestamp>;
+  deleted_at: Timestamp | null;
+  id: Generated<Int8>;
+  token: string;
+  updated_at: Generated<Timestamp>;
+  user_id: Generated<Int8>;
+  valid_until: Timestamp;
+}
+
 export interface ResetTokens {
   created_at: Generated<Timestamp>;
   deleted_at: Timestamp | null;
@@ -35,6 +45,7 @@ export interface Users {
 }
 
 export interface DB {
+  refresh_tokens: RefreshTokens;
   reset_tokens: ResetTokens;
   users: Users;
 }
diff --git a/apps/backend/src/lib/nestjs/cookies/cookies-decorator.ts b/apps/backend/src/lib/nestjs/cookies/cookies-decorator.ts
new file mode 100644
index 0000000..258adfd
--- /dev/null
+++ b/apps/backend/src/lib/nestjs/cookies/cookies-decorator.ts
@@ -0,0 +1,11 @@
+import { createParamDecorator, ExecutionContext } from '@nestjs/common';
+import { Request } from 'express';
+import { ZodType } from 'zod';
+
+export const Cookies = createParamDecorator(
+  <T>(data: { key: string; parser: ZodType<T> }, ctx: ExecutionContext) => {
+    const request = ctx.switchToHttp().getRequest<Request>();
+    const res = data.parser.safeParse(request.cookies?.[data.key]);
+    return res.success ? res.data : undefined;
+  },
+);
diff --git a/apps/backend/src/main.ts b/apps/backend/src/main.ts
index d5c787b..05228ba 100644
--- a/apps/backend/src/main.ts
+++ b/apps/backend/src/main.ts
@@ -1,10 +1,13 @@
 import { NestFactory } from '@nestjs/core';
 import { AppModule } from './app.module';
 import { AppErrorFilter } from './app-error.filter';
+import * as cookieParser from 'cookie-parser';
 
 async function bootstrap() {
   const app = await NestFactory.create(AppModule);
   app.useGlobalFilters(new AppErrorFilter());
+  app.use(cookieParser());
+  console.log('Starting server on port', process.env.PORT ?? 3000);
   await app.listen(process.env.PORT ?? 3000);
 }
 bootstrap();
diff --git a/apps/backend/src/services/core/crypto/crypto.service.ts b/apps/backend/src/services/core/crypto/crypto.service.ts
index 4f85818..876b1ff 100644
--- a/apps/backend/src/services/core/crypto/crypto.service.ts
+++ b/apps/backend/src/services/core/crypto/crypto.service.ts
@@ -38,4 +38,12 @@ export class CryptoService {
       );
     });
   }
+
+  generateHmac(payload: string, key: string) {
+    return crypto.createHmac('sha256', key).update(payload).digest('hex');
+  }
+
+  validateHmac(payload: string, hmac: string, key: string): boolean {
+    return this.generateHmac(payload, key) === hmac;
+  }
 }
diff --git a/apps/backend/src/services/core/env/env.service.ts b/apps/backend/src/services/core/env/env.service.ts
index 2c0fd70..10d48c9 100644
--- a/apps/backend/src/services/core/env/env.service.ts
+++ b/apps/backend/src/services/core/env/env.service.ts
@@ -2,6 +2,11 @@ import { Injectable } from '@nestjs/common';
 import z from 'zod';
 import * as dotenv from 'dotenv';
 
+export enum EnvType {
+  Dev = 'dev',
+  Production = 'production',
+}
+
 const envParser = z
   .object({
     DATABASE: z.string(),
@@ -13,8 +18,10 @@ const envParser = z
     MAIL_PORT: z.coerce.number(),
     MAIL_USER: z.string().email(),
     MAIL_PASSWORD: z.string(),
-    APP_FRONTEND_URL: z.string(),
+    APP_DOMAIN: z.string(),
+    APP_ENV_TYPE: z.nativeEnum(EnvType),
     SECRET_AUTH_SIGN: z.string(),
+    SECRET_AUTH_HMAC: z.string(),
   })
   .transform((parsed) => ({
     database: {
@@ -31,10 +38,12 @@ const envParser = z
       password: parsed.MAIL_PASSWORD,
     },
     app: {
-      frontendUrl: parsed.APP_FRONTEND_URL,
+      domain: parsed.APP_DOMAIN,
+      envType: parsed.APP_ENV_TYPE,
     },
     secrets: {
       authSign: parsed.SECRET_AUTH_SIGN,
+      authHmac: parsed.SECRET_AUTH_HMAC,
     },
   }));
 
diff --git a/apps/backend/src/services/core/link-builder/link-builder.service.ts b/apps/backend/src/services/core/link-builder/link-builder.service.ts
index bc5c376..b5da217 100644
--- a/apps/backend/src/services/core/link-builder/link-builder.service.ts
+++ b/apps/backend/src/services/core/link-builder/link-builder.service.ts
@@ -9,7 +9,7 @@ export class LinkBuilderService {
     path: string[],
     queryParams: Record<string, string> = {},
   ) {
-    const base = this.envService.config.app.frontendUrl;
+    const base = this.envService.config.app.domain;
     const segments = path.join('/');
     const queryParamsList = Object.entries(queryParams);
     const joinedQueryParam = queryParamsList
diff --git a/documentation/bruno-rest-api/LocalAPI/auth/credentials.bru b/documentation/bruno-rest-api/LocalAPI/auth/credentials.bru
index 633b37d..2fcde46 100644
--- a/documentation/bruno-rest-api/LocalAPI/auth/credentials.bru
+++ b/documentation/bruno-rest-api/LocalAPI/auth/credentials.bru
@@ -6,10 +6,17 @@ meta {
 
 post {
   url: {{BASE_URL}}/auth/credentials
-  body: none
+  body: json
   auth: inherit
 }
 
+body:json {
+  {
+    "email": "paul@cowsi.ch",
+    "password": "Password1234"
+  }
+}
+
 settings {
   encodeUrl: true
 }
diff --git a/packages/common/src/models/auth/auth-token-payload.ts b/packages/common/src/models/auth/auth-token-payload.ts
new file mode 100644
index 0000000..d3c6a9e
--- /dev/null
+++ b/packages/common/src/models/auth/auth-token-payload.ts
@@ -0,0 +1,3 @@
+export interface AuthTokenPayload {
+  userId: string;
+}
diff --git a/packages/common/src/models/auth/credential-auth.ts b/packages/common/src/models/auth/credential-auth.ts
index 5d956ec..9d261a8 100644
--- a/packages/common/src/models/auth/credential-auth.ts
+++ b/packages/common/src/models/auth/credential-auth.ts
@@ -5,10 +5,4 @@ export const credentialAuthParser = z.object({
   password: z.string({ message: "invalid password" }),
 });
 
-export const credentialAuthResponse = z.object({
-  accessToken: z.string({ message: "invalid access tokens" }),
-});
-
 export type CredentialAuth = z.infer<typeof credentialAuthParser>;
-
-export type CredentialAuthResponse = z.infer<typeof credentialAuthResponse>;
diff --git a/packages/common/src/models/auth/index.ts b/packages/common/src/models/auth/index.ts
index 763ca48..97cd94b 100644
--- a/packages/common/src/models/auth/index.ts
+++ b/packages/common/src/models/auth/index.ts
@@ -1,2 +1,3 @@
+export * from "./auth-token-payload";
 export * from "./credential-auth";
 export * from "./reset-auth";
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 8513acd..4001a5b 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -34,6 +34,9 @@ importers:
       argon2:
         specifier: ^0.44.0
         version: 0.44.0
+      cookie-parser:
+        specifier: ^1.4.7
+        version: 1.4.7
       dayjs:
         specifier: ^1.11.13
         version: 1.11.13
@@ -98,6 +101,9 @@ importers:
       '@swc/core':
         specifier: ^1.10.7
         version: 1.12.11
+      '@types/cookie-parser':
+        specifier: ^1.4.9
+        version: 1.4.9(@types/express@5.0.3)
       '@types/ejs':
         specifier: ^3.1.5
         version: 3.1.5
@@ -1042,6 +1048,11 @@ packages:
   '@types/connect@3.4.38':
     resolution: {integrity: sha512-K6uROf1LD88uDQqJCktA4yzL1YYAK6NgfsI0v/mTgyPKWsX1CnJ0XPSDhViejru1GcRkLWb8RlzFYJRqGUbaug==}
 
+  '@types/cookie-parser@1.4.9':
+    resolution: {integrity: sha512-tGZiZ2Gtc4m3wIdLkZ8mkj1T6CEHb35+VApbL2T14Dew8HA7c+04dmKqsKRNC+8RJPm16JEK0tFSwdZqubfc4g==}
+    peerDependencies:
+      '@types/express': '*'
+
   '@types/cookiejar@2.1.5':
     resolution: {integrity: sha512-he+DHOWReW0nghN24E1WUqM0efK4kI9oTqDm6XmK8ZPe2djZ90BSNdGnIyCLzCPw7/pogPlGbzI2wHGGmi4O/Q==}
 
@@ -1666,6 +1677,13 @@ packages:
   convert-source-map@2.0.0:
     resolution: {integrity: sha512-Kvp459HrV2FEJ1CAsi1Ku+MY3kasH19TFykTz2xWmMeq6bk2NU3XXvfJ+Q61m0xktWwt+1HSYf3JZsTms3aRJg==}
 
+  cookie-parser@1.4.7:
+    resolution: {integrity: sha512-nGUvgXnotP3BsjiLX2ypbQnWoGUPIIfHQNZkkC668ntrzGWEZVW70HDEB1qnNGMicPje6EttlIgzo51YSwNQGw==}
+    engines: {node: '>= 0.8.0'}
+
+  cookie-signature@1.0.6:
+    resolution: {integrity: sha512-QADzlaHc8icV8I7vbaJXJwod9HWYp8uCqf1xa4OfNu1T7JVxQIrUgOWtHdNDtPiywmFbiS12VjotIXLrKM3orQ==}
+
   cookie-signature@1.2.2:
     resolution: {integrity: sha512-D76uU73ulSXrD1UXF4KE2TMxVVwhsnCgfAyTg9k8P6KGZjlXKrOLe4dJQKI3Bxi5wjesZoFXJWElNWBjPZMbhg==}
     engines: {node: '>=6.6.0'}
@@ -4860,6 +4878,10 @@ snapshots:
     dependencies:
       '@types/node': 22.16.3
 
+  '@types/cookie-parser@1.4.9(@types/express@5.0.3)':
+    dependencies:
+      '@types/express': 5.0.3
+
   '@types/cookiejar@2.1.5': {}
 
   '@types/ejs@3.1.5': {}
@@ -5650,6 +5672,13 @@ snapshots:
 
   convert-source-map@2.0.0: {}
 
+  cookie-parser@1.4.7:
+    dependencies:
+      cookie: 0.7.2
+      cookie-signature: 1.0.6
+
+  cookie-signature@1.0.6: {}
+
   cookie-signature@1.2.2: {}
 
   cookie@0.7.2: {}