diff --git a/backend/openapiconfig.json b/backend/openapiconfig.json
new file mode 100644
index 0000000..d42a2a2
--- /dev/null
+++ b/backend/openapiconfig.json
@@ -0,0 +1,15 @@
+{
+  "npmName": "Ticket-API-Services",
+  "npmVersion": "0.0.0",
+  "providedIn": "root",
+  "withInterfaces": true,
+  "enumNameSuffix": "Enum",
+  "supportsES6": true,
+  "ngVersion": "17.0.0",
+  "modelSuffix": "Model",
+  "stringEnums": true,
+  "enumPropertyNaming": "PascalCase",
+  "modelPropertyNaming": "original",
+  "fileNaming": "camelCase",
+  "paramNaming": "camelCase"
+}
diff --git a/backend/openapitools.json b/backend/openapitools.json
new file mode 100644
index 0000000..7b50e33
--- /dev/null
+++ b/backend/openapitools.json
@@ -0,0 +1,48 @@
+{
+  "$schema": "./node_modules/@openapitools/openapi-generator-cli/config.schema.json",
+  "spaces": 2,
+  "generator-cli": {
+    "version": "7.6.0",
+    "generators": {
+      "typescript-angular": {
+        "generatorName": "typescript-angular",
+        "output": "web-api",
+        "inputSpec": "http://localhost:3000/api-json",
+        "additionalProperties": {
+          "npmName": "Ticket-API-Services",
+          "npmVersion": "0.0.0",
+          "ngVersion": "17.0.0",
+          "npmRepository": null,
+          "configurationPrefix": null,
+          "apiModulePrefix" : "TicketApi",
+          "providedIn": "any",
+          "fileNaming": "camelCase",
+          "paramNaming": "camelCase",
+          "enumPropertyNamingReplaceSpecialChar": "false",
+          "enumUnknownDefaultCase": "false",
+          "enumNameSuffix": "ApiEnum",
+          "enumPropertyNaming": "PascalCase",
+          "modelPropertyNaming": "original",
+          "modelSuffix": "ApiModel",
+          "modelFileSuffix": ".api.model",
+          "serviceSuffix": "ApiService",
+          "serviceFileSuffix": ".api.service",
+          "withInterfaces": true,
+          "supportsES6": true,
+          "stringEnums": true,
+          "sortParamsByRequiredFlag": true,
+          "sortModelPropertiesByRequiredFlag": true,
+          "useSingleRequestParameter": false,
+          "taggedUnions": false,
+          "snapshot": false,
+          "prependFormOrBodyParameters": false,
+          "nullSafeAdditionalProps": false,
+          "legacyDiscriminatorBehavior": true,
+          "ensureUniqueParams": true,
+          "disallowAdditionalPropertiesIfNotPresent": true,
+          "allowUnicodeIdentifiers": false
+        }
+      }
+    }
+  }
+}
diff --git a/backend/package.json b/backend/package.json
index e5bd261..32ac129 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -17,7 +17,8 @@
     "test:watch": "jest --watch",
     "test:cov": "jest --coverage",
     "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
-    "test:e2e": "jest --config ./test/jest-e2e.json"
+    "test:e2e": "jest --config ./test/jest-e2e.json",
+    "build:api": "pnpm openapi-generator-cli generate"
   },
   "dependencies": {
     "@nestjs/common": "^10.0.0",
@@ -28,6 +29,7 @@
     "@nestjs/platform-express": "^10.0.0",
     "@nestjs/swagger": "^7.3.1",
     "@nestjs/typeorm": "^10.0.2",
+    "argon2": "^0.40.1",
     "class-transformer": "^0.5.1",
     "class-validator": "^0.14.1",
     "install": "^0.13.0",
diff --git a/backend/pnpm-lock.yaml b/backend/pnpm-lock.yaml
index 1fdc979..58ceaed 100644
--- a/backend/pnpm-lock.yaml
+++ b/backend/pnpm-lock.yaml
@@ -29,6 +29,9 @@ dependencies:
   '@nestjs/typeorm':
     specifier: ^10.0.2
     version: 10.0.2(@nestjs/common@10.3.7)(@nestjs/core@10.3.7)(reflect-metadata@0.2.2)(rxjs@7.8.1)(typeorm@0.3.20)
+  argon2:
+    specifier: ^0.40.1
+    version: 0.40.1
   class-transformer:
     specifier: ^0.5.1
     version: 0.5.1
@@ -1182,7 +1185,6 @@ packages:
   /@phc/format@1.0.0:
     resolution: {integrity: sha512-m7X9U6BG2+J+R1lSOdCiITLLrxm+cWlNI3HUFA92oLO77ObGNzaKdh8pMLqdZcshtkKuV84olNNXDfMc4FezBQ==}
     engines: {node: '>=10'}
-    dev: true
 
   /@pkgjs/parseargs@0.11.0:
     resolution: {integrity: sha512-+1VkjdD0QBLPodGrJUeqarH8VAIvQODIbwh9XpP5Syisf7YoQgsJKPNFoqqLQlu+VQ/tVSshMR6loPMn8U+dPg==}
@@ -1823,7 +1825,6 @@ packages:
       '@phc/format': 1.0.0
       node-addon-api: 7.1.0
       node-gyp-build: 4.8.1
-    dev: true
 
   /argparse@1.0.10:
     resolution: {integrity: sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==}
@@ -4230,7 +4231,6 @@ packages:
   /node-addon-api@7.1.0:
     resolution: {integrity: sha512-mNcltoe1R8o7STTegSOHdnJNN7s5EUvhoS7ShnTHDyOSd+8H+UdWODq6qSv67PjC8Zc5JRT8+oLAMCr0SIXw7g==}
     engines: {node: ^16 || ^18 || >= 20}
-    dev: true
 
   /node-emoji@1.11.0:
     resolution: {integrity: sha512-wo2DpQkQp7Sjm2A0cq+sN7EHKO6Sl0ctXeBdFZrL9T9+UywORbufTcTZxom8YqpLQt/FqNMUkOpkZrJVYSKD3A==}
@@ -4252,7 +4252,6 @@ packages:
   /node-gyp-build@4.8.1:
     resolution: {integrity: sha512-OSs33Z9yWr148JZcbZd5WiAXhh/n9z8TxQcdMhIOlpN9AhWpLfvVFO73+m77bBABQMaY9XSvIa+qk0jlI7Gcaw==}
     hasBin: true
-    dev: true
 
   /node-int64@0.4.0:
     resolution: {integrity: sha512-O5lz91xSOeoXP6DulyHfllpq+Eg00MWitZIbtPfoSEvqIHdl5gfcY6hYzDWnj0qD5tz52PI08u9qUvSVeUBeHw==}