diff --git a/app/Contracts/CryptographyContract.php b/app/Contracts/CryptographyContract.php
new file mode 100644
index 0000000..90f5e8a
--- /dev/null
+++ b/app/Contracts/CryptographyContract.php
@@ -0,0 +1,9 @@
+<?php declare(strict_types=1);
+
+namespace App\Contracts;
+
+interface CryptographyContract
+{
+    public function encrypt(string $text): string;
+    public function decrypt(string $encryptedText): string;
+}
diff --git a/app/Providers/AppServiceProvider.php b/app/Providers/AppServiceProvider.php
index 7900e94..4ad927e 100644
--- a/app/Providers/AppServiceProvider.php
+++ b/app/Providers/AppServiceProvider.php
@@ -10,8 +10,10 @@ use App\Captcha\Images\Body;
 use App\Captcha\Images\Head;
 use App\Captcha\Images\ImageManager;
 use App\Captcha\Images\Lines;
+use App\Contracts\CryptographyContract;
 use App\Services\Api\V1\CaptchaGenerateService;
 use App\Services\CaptchaToken\CaptchaTokenHandler;
+use App\Services\CryptographyString;
 use App\Services\GenerateTokenCommand\GenerateTokenUlidCommand;
 use App\Services\GenerateTokenCommand\GenerateTokenUuidCommand;
 use App\Services\Search\CreateSearchInstanceCommand;
@@ -35,6 +37,8 @@ final class AppServiceProvider extends ServiceProvider
         $this->app->bind(ImageBody::class, Body::class);
         $this->app->bind(ImageLines::class, Lines::class);
 
+        $this->app->bind(CryptographyContract::class, CryptographyString::class);
+
         $this->app->bind(CreateSearchInstanceCommand::class, function () {
             return new CreateSearchInstanceCommand(Search::class);
         });
diff --git a/app/Services/CryptographyString.php b/app/Services/CryptographyString.php
new file mode 100644
index 0000000..b5febf6
--- /dev/null
+++ b/app/Services/CryptographyString.php
@@ -0,0 +1,19 @@
+<?php declare(strict_types=1);
+
+namespace App\Services;
+
+use App\Contracts\CryptographyContract;
+use Illuminate\Support\Facades\Crypt;
+
+final class CryptographyString implements CryptographyContract
+{
+    public function encrypt(string $text): string
+    {
+        return Crypt::encryptString($text);
+    }
+
+    public function decrypt(string $encryptedText): string
+    {
+        return Crypt::decryptString($encryptedText);
+    }
+}