diff --git a/src/Dto/Connector/EppClientProviderAuthDto.php b/src/Dto/Connector/EppClientProviderAuthDto.php
new file mode 100644
index 0000000..67b006d
--- /dev/null
+++ b/src/Dto/Connector/EppClientProviderAuthDto.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace App\Dto\Connector;
+
+use Symfony\Component\Validator\Constraints as Assert;
+
+final class EppClientProviderAuthDto
+{
+    #[Assert\NotBlank]
+    public string $username;
+
+    #[Assert\NotBlank]
+    public string $password;
+
+    #[Assert\NotBlank]
+    public EppClientProviderAuthSSLDto $ssl;
+}
diff --git a/src/Dto/Connector/EppClientProviderAuthSSLDto.php b/src/Dto/Connector/EppClientProviderAuthSSLDto.php
new file mode 100644
index 0000000..6605f4d
--- /dev/null
+++ b/src/Dto/Connector/EppClientProviderAuthSSLDto.php
@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Dto\Connector;
+
+final class EppClientProviderAuthSSLDto
+{
+    public ?string $peer_name = null;
+
+    public ?bool $verify_peer = null;
+
+    public ?bool $verify_peer_name = null;
+
+    public ?bool $allow_self_signed = null;
+
+    public ?int $verify_depth = null;
+
+    public ?string $passphrase = null;
+
+    public ?bool $disable_compression = null;
+}
diff --git a/src/Dto/Connector/EppClientProviderDomainDto.php b/src/Dto/Connector/EppClientProviderDomainDto.php
new file mode 100644
index 0000000..f9aad21
--- /dev/null
+++ b/src/Dto/Connector/EppClientProviderDomainDto.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Dto\Connector;
+
+use Symfony\Component\Validator\Constraints as Assert;
+
+final class EppClientProviderDomainDto
+{
+    #[Assert\NotBlank]
+    public int $period;
+
+    #[Assert\NotBlank]
+    public string $unit;
+
+    #[Assert\NotBlank]
+    public string $registrant;
+
+    #[Assert\NotBlank]
+    public string $password;
+
+    #[Assert\NotBlank]
+    public array $contacts;
+}
diff --git a/src/Dto/Connector/EppClientProviderDto.php b/src/Dto/Connector/EppClientProviderDto.php
new file mode 100644
index 0000000..544e4df
--- /dev/null
+++ b/src/Dto/Connector/EppClientProviderDto.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace App\Dto\Connector;
+
+use Symfony\Component\Validator\Constraints as Assert;
+
+final class EppClientProviderDto extends DefaultProviderDto
+{
+    #[Assert\NotBlank]
+    public string $version;
+
+    #[Assert\NotBlank]
+    public string $language;
+
+    #[Assert\NotBlank]
+    public string $hostname;
+
+    #[Assert\NotBlank]
+    public int $port;
+
+    #[Assert\NotBlank]
+    public EppClientProviderAuthDto $auth;
+
+    #[Assert\NotBlank]
+    public EppClientProviderDomainDto $domain;
+
+    public array $xPathURI = [];
+
+    public array $extURI = [];
+
+    public array $objURI = [];
+
+    #[Assert\NotBlank]
+    public string $certificate_pem;
+
+    #[Assert\NotBlank]
+    public string $certificate_key;
+
+    public ?EppClientProviderFilesDto $files;
+}
diff --git a/src/Dto/Connector/EppClientProviderFilesDto.php b/src/Dto/Connector/EppClientProviderFilesDto.php
new file mode 100644
index 0000000..6f69098
--- /dev/null
+++ b/src/Dto/Connector/EppClientProviderFilesDto.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace App\Dto\Connector;
+
+use Symfony\Component\Validator\Constraints as Assert;
+
+final class EppClientProviderFilesDto
+{
+    #[Assert\NotBlank]
+    public string $pem;
+
+    #[Assert\NotBlank]
+    public string $key;
+}
diff --git a/src/Service/Connector/EppClientProvider.php b/src/Service/Connector/EppClientProvider.php
index 367b12f..e8e529c 100644
--- a/src/Service/Connector/EppClientProvider.php
+++ b/src/Service/Connector/EppClientProvider.php
@@ -2,6 +2,7 @@
 
 namespace App\Service\Connector;
 
+use App\Dto\Connector\EppClientProviderDto;
 use App\Entity\Domain;
 use Metaregistrar\EPP\eppCheckDomainRequest;
 use Metaregistrar\EPP\eppCheckDomainResponse;
@@ -14,26 +15,23 @@ use Metaregistrar\EPP\eppHelloRequest;
 use Psr\Cache\CacheItemInterface;
 use Psr\Cache\CacheItemPoolInterface;
 use Psr\Cache\InvalidArgumentException;
+use Symfony\Component\Serializer\Normalizer\DenormalizerInterface;
+use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
+use Symfony\Component\Validator\Validator\ValidatorInterface;
 
 class EppClientProvider extends AbstractProvider implements CheckDomainProviderInterface
 {
     public const EPP_CERTIFICATES_PATH = '../var/epp-certificates/';
 
+    protected string $dtoClass = EppClientProviderDto::class;
     private eppConnection $eppClient;
 
     public function __construct(
         CacheItemPoolInterface $cacheItemPool,
+        DenormalizerInterface&NormalizerInterface $serializer,
+        ValidatorInterface $validator,
     ) {
-        parent::__construct($cacheItemPool);
-    }
-
-    protected function verifySpecificAuthData(array $authData): array
-    {
-        // TODO: Create DTO for each authData schema
-        unset($authData['certificate_pem']);
-        unset($authData['certificate_key']);
-
-        return $authData;
+        parent::__construct($cacheItemPool, $serializer, $validator);
     }
 
     protected function assertAuthentication(): void