diff --git a/README.md b/README.md
index 91cf57a..7506419 100644
--- a/README.md
+++ b/README.md
@@ -27,10 +27,10 @@ A new file called `openapi.json` has been generated !
 class Controller {
     #[
         GET("/path/{id}", ["Tag1", "Tag2"], "Description of the method"),
-        Property(PropertyType::STRING, "prop1", description: "Property description", enum: ["val1", "val2"]),
-        Property(PropertyType::INT, "prop2", example: 1),
-        Property(PropertyType::BOOLEAN, "prop3"),
-        Property(PropertyType::REF, "prop4", ref: RefSchema::class)
+        Property(Type::STRING, "prop1", description: "Property description", enum: ["val1", "val2"]),
+        Property(Type::INT, "prop2", example: 1),
+        Property(Type::BOOLEAN, "prop3"),
+        Property(Type::REF, "prop4", ref: RefSchema::class)
         Response(ref: SchemaName::class, description: "Response description")
     ]
     public function get(#[Parameter("Parameter description")] int $id): JsonResponse {
diff --git a/composer.json b/composer.json
index 6b1d5e9..dc63880 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,8 @@
     "require": {
         "php": ">=8.0",
         "symfony/finder": "^6.0",
-        "symfony/http-foundation": "^6.0"
+        "symfony/http-foundation": "^6.0",
+        "symfony/string": "^6.2"
     },
     "autoload": {
         "psr-4": {
diff --git a/opag b/opag
index cda2146..caef9a5 100755
--- a/opag
+++ b/opag
@@ -35,8 +35,15 @@ foreach ($files as $autoload) {
     include_once $autoload->getPathName();
 }
 
-$generator = \OpenApiGenerator\Generator::create()->generate();
+try {
+    $generator = \OpenApiGenerator\Generator::create()->generate();
+} catch (\Exception $e) {
+    echo "[ERROR] ".$e->getMessage();
+    die;
+}
 
 $schema = json_encode($generator, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
 
 file_put_contents($outputFile, $schema);
+
+echo "DONE !";
diff --git a/src/ApiDescriptionChecker.php b/src/ApiDescriptionChecker.php
index ee916ff..d61e332 100644
--- a/src/ApiDescriptionChecker.php
+++ b/src/ApiDescriptionChecker.php
@@ -14,6 +14,8 @@ private function __construct(private array $definition)
         $this->checkOpenApiVersion();
         $this->checkInfo();
         $this->checkServers();
+        $this->checkSecurityScheme();
+        $this->checkSecurity();
     }
 
     /**
@@ -65,6 +67,71 @@ private function checkServers(): void
         }
     }
 
+    private function checkSecurityScheme(): void
+    {
+        if (!isset($this->definition['securitySchemes'])) {
+            return;
+        }
+
+        foreach ($this->definition['securitySchemes'] as $securityScheme) {
+            switch ($securityScheme["type"]) {
+                case "apiKey":
+                    if (empty($securityScheme["name"]) || !in_array(
+                            $securityScheme["in"],
+                            ['query', 'header', 'cookie'],
+                            true
+                        )) {
+                        throw new \InvalidArgumentException("SecurityScheme: apiKey must have name and in");
+                    }
+                    break;
+                case "http":
+                    if (empty($securityScheme["scheme"])) {
+                        throw new \InvalidArgumentException("SecurityScheme: http must have scheme");
+                    }
+                    break;
+                case "mutualTLS":
+                    break;
+                case "oauth2":
+                    if (empty($securityScheme["flows"])) {
+                        throw new \InvalidArgumentException("SecurityScheme: oauth2 must have flows");
+                    }
+                    break;
+                case "openIdConnect":
+                    if (empty($securityScheme["openIdConnectUrl"])) {
+                        throw new \InvalidArgumentException("SecurityScheme: openIdConnect must have openIdConnectUrl");
+                    }
+                    break;
+                default:
+                    throw new \InvalidArgumentException(
+                        'Invalid security scheme type: should be one of "apiKey", "http", "oauth2", "openIdConnect"'
+                    );
+            }
+        }
+    }
+
+    private function checkSecurity(): void
+    {
+        if (!isset($this->definition['security'])) {
+            return;
+        }
+
+        foreach ($this->definition['security'] as $security) {
+            if ($security instanceof \stdClass) {
+                continue;
+            }
+
+            $availableValues = array_keys($this->definition['components']['securitySchemes']);
+            $securityName = array_keys($security)[0];
+
+            if (!in_array($securityName, $availableValues, true)) {
+                throw new \InvalidArgumentException(
+                    "Security: security scheme not found. Please choose one of the followings: " .
+                    implode(', ', $availableValues)
+                );
+            }
+        }
+    }
+
     /**
      * Check the API description for any omitted mandatory fields or wrong formats.
      */
diff --git a/src/Attributes/Security.php b/src/Attributes/Security.php
new file mode 100644
index 0000000..05031ce
--- /dev/null
+++ b/src/Attributes/Security.php
@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenApiGenerator\Attributes;
+
+use Attribute;
+use JsonSerializable;
+use Symfony\Component\String\UnicodeString;
+
+#[Attribute(Attribute::TARGET_CLASS)]
+class Security implements JsonSerializable
+{
+    /**
+     * Be aware that security scheme keys are the slugified names or the type of the security scheme.
+     * An empty array means that security is optional: https://spec.openapis.org/oas/v3.1.0#fixed-fields
+     */
+    public function __construct(private array $securitySchemeKeys = [])
+    {
+        // ...
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function jsonSerialize(): array
+    {
+        if (empty($this->securitySchemeKeys)) {
+            return [new \stdClass()];
+        }
+
+        return array_map(fn (string $key) => [$key => []], $this->securitySchemeKeys);
+    }
+}
diff --git a/src/Attributes/SecurityScheme.php b/src/Attributes/SecurityScheme.php
index 16bf7b0..493d3d9 100644
--- a/src/Attributes/SecurityScheme.php
+++ b/src/Attributes/SecurityScheme.php
@@ -6,19 +6,21 @@
 
 use Attribute;
 use JsonSerializable;
+use Symfony\Component\String\UnicodeString;
 
 #[Attribute(Attribute::TARGET_CLASS | Attribute::IS_REPEATABLE)]
 class SecurityScheme implements JsonSerializable
 {
     public function __construct(
-        private string $securityKey = '',
-        private string $type = '',
-        private string $name= '',
-        private string $in = '',
-        private string $bearerFormat = '',
-        private string $scheme = '',
+        private string $type,
+        private ?string $description = null,
+        private ?string $name = null,
+        private ?string $in = null,
+        private ?string $scheme = null,
+        private ?string $bearerFormat = null,
+        private array $flows = [],
+        private ?string $openIdConnectUrl = null,
     ) {
-        //
     }
 
     /**
@@ -26,14 +28,20 @@ public function __construct(
      */
     public function jsonSerialize(): array
     {
+        $slugger = new UnicodeString($this->name ?: $this->type);
+        $slugName = (string)$slugger->snake();
+
         return [
-            $this->securityKey => [
+            $slugName => array_filter([
                 'type' => $this->type,
+                'description' => $this->description,
                 'name' => $this->name,
                 'in' => $this->in,
-                'bearerFormat' => $this->bearerFormat,
                 'scheme' => $this->scheme,
-            ],
+                'bearerFormat' => $this->bearerFormat,
+                'flows' => $this->flows,
+                'openIdConnectUrl' => $this->openIdConnectUrl,
+            ])
         ];
     }
 }
diff --git a/src/Generator.php b/src/Generator.php
index d14a3ea..1d11f27 100644
--- a/src/Generator.php
+++ b/src/Generator.php
@@ -8,6 +8,7 @@
 use OpenApiGenerator\Attributes\Controller;
 use OpenApiGenerator\Attributes\Info;
 use OpenApiGenerator\Attributes\Schema;
+use OpenApiGenerator\Attributes\Security;
 use OpenApiGenerator\Attributes\SecurityScheme;
 use OpenApiGenerator\Attributes\Server;
 use ReflectionAttribute;
@@ -16,7 +17,7 @@
 
 class Generator
 {
-    public const OPENAPI_VERSION = "3.0.0";
+    public const OPENAPI_VERSION = "3.1.0";
 
     /**
      * API description
@@ -68,6 +69,7 @@ public function generate(): array
             $this->loadSchema($reflectionClass);
             $this->loadServer($reflectionClass);
             $this->loadSecurityScheme($reflectionClass);
+            $this->loadSecurity($reflectionClass);
         }
 
         $this->description['paths'] = $this->generatorHttp->build();
@@ -158,18 +160,26 @@ private function loadServer(ReflectionClass $reflectionClass): void
     private function loadSecurityScheme(ReflectionClass $reflectionClass): void
     {
         if (count($reflectionClass->getAttributes(SecurityScheme::class))) {
-            $securitySchemas = $reflectionClass->getAttributes(SecurityScheme::class);
+            $securitySchemes = $reflectionClass->getAttributes(SecurityScheme::class);
 
-            foreach ($securitySchemas as $item) {
+            foreach ($securitySchemes as $item) {
                 $data = $item->newInstance()->jsonSerialize();
                 $key = array_keys($data)[0];
                 $this->description['components']['securitySchemes'][$key] = $data[$key];
             }
+        }
+    }
+    /**
+     * @param ReflectionClass $reflectionClass
+     * @return void
+     */
+    private function loadSecurity(ReflectionClass $reflectionClass): void
+    {
+        if (count($reflectionClass->getAttributes(Security::class))) {
+            $securityAttributes = $reflectionClass->getAttributes(Security::class);
+            $security = reset($securityAttributes);
 
-            $this->description['security'] = array_map(
-                fn(string $canonicalName) => [$canonicalName => []],
-                array_keys($this->description['components']['securitySchemes'])
-            );
+            $this->description['security'] = $security->newInstance()->jsonSerialize();
         }
     }
 }
diff --git a/tests/Examples/Controller/SimpleController.php b/tests/Examples/Controller/SimpleController.php
index 1dc38be..af71e83 100644
--- a/tests/Examples/Controller/SimpleController.php
+++ b/tests/Examples/Controller/SimpleController.php
@@ -11,6 +11,7 @@
 use OpenApiGenerator\Attributes\PathParameter;
 use OpenApiGenerator\Attributes\Property;
 use OpenApiGenerator\Attributes\Response;
+use OpenApiGenerator\Attributes\Security;
 use OpenApiGenerator\Attributes\SecurityScheme;
 use OpenApiGenerator\Attributes\Server;
 use OpenApiGenerator\Type;
@@ -19,14 +20,8 @@
     Server('same server1', 'same url1'),
     Info("title", "1.0.0", "The description"),
     Server('same server2', 'same url2'),
-    SecurityScheme(
-        'bearerAuth',
-        'http',
-        'bearerAuth',
-        'header',
-        'JWT',
-        'bearer',
-    ),
+    Security(['http']),
+    SecurityScheme(type: 'http', scheme: 'Bearer', bearerFormat: 'JWT bearer token'),
     Controller,
 ]
 class SimpleController