diff --git a/app/Services/EDocument/Standards/Verifactu/Signing/SigningService.php b/app/Services/EDocument/Standards/Verifactu/Signing/SigningService.php
new file mode 100644
index 0000000000..6dbb2c4ae2
--- /dev/null
+++ b/app/Services/EDocument/Standards/Verifactu/Signing/SigningService.php
@@ -0,0 +1,45 @@
+<?php
+
+namespace App\Services\EDocument\Standards\Verifactu\Signing;
+
+use RobRichards\XMLSecLibs\XMLSecurityDSig;
+use RobRichards\XMLSecLibs\XMLSecurityKey;
+
+class SigningService
+{
+
+    public function __construct(
+        private string $xml,
+        private string $private_key,
+        private string $certificate
+    ) {
+    }
+
+    public function sign()
+    {
+        $doc = new \DOMDocument();
+        $doc->loadXML($this->xml);
+
+        $objDSig = new XMLSecurityDSig();
+        $objDSig->setCanonicalMethod(XMLSecurityDSig::EXC_C14N);
+        $objDSig->addReference(
+            $doc,
+            XMLSecurityDSig::SHA256,
+            ['http://www.w3.org/2000/09/xmldsig#enveloped-signature'],
+            ['force_uri' => true]
+        );
+
+        $objKey = new XMLSecurityKey(XMLSecurityKey::RSA_SHA256, ['type' => 'private']);
+        $objKey->loadKey($this->private_key, false);
+
+        // Attach the certificate (public) to the KeyInfo
+        $objDSig->add509Cert($this->certificate, true, false, ['subjectName' => true]);
+
+        $objDSig->sign($objKey);
+        $objDSig->appendSignature($doc->documentElement);
+
+        // --- 3. Return signed XML as string ---
+        return $doc->saveXML();
+
+    }
+}
\ No newline at end of file