diff --git a/Security/Services/AuthService.cs b/Security/Services/AuthService.cs
index e13f565..90ceb14 100644
--- a/Security/Services/AuthService.cs
+++ b/Security/Services/AuthService.cs
@@ -1,8 +1,12 @@
-using System;
+using Mirea.Api.Security.Common.Domain;
+using Mirea.Api.Security.Common.Dto.Requests;
+using Mirea.Api.Security.Common.Dto.Responses;
+using Mirea.Api.Security.Common.Interfaces;
+using System;
 
 namespace Mirea.Api.Security.Services;
 
-public class AuthService()
+public class AuthService(ICacheService cache)
 {
     public TimeSpan Lifetime { private get; init; }
 
@@ -10,4 +14,11 @@ public class AuthService()
                                                     GeneratorKey.GenerateString(32);
 
     private static string GetAuthCacheKey(string fingerprint) => $"{fingerprint}_auth_token";
+
+    private Task SetAuthTokenDataToCache(string fingerprint, AuthToken data, CancellationToken cancellation) =>
+        cache.SetAsync(
+            GetAuthCacheKey(fingerprint),
+            JsonSerializer.SerializeToUtf8Bytes(data),
+            slidingExpiration: Lifetime,
+            cancellationToken: cancellation);
 }
\ No newline at end of file