43b7af74_vices_List___Overclockers_Club__Notes
[Service Name] Cryptographic Services [Recommended Setting] Automatic [Notes] 
Basically it confirms signatures of Windows files You may always get a dialog box complaining about uncertified drivers if this is disabled. Keep it enabled in order to download updates from windowsupdate.microsoft.com
Windows XP Services Removal Guide » Page 2 - Windows Services List - Overclockers Club
Notes