typedef struct _CM_KEY_SECURITY_CACHE
{
     ULONG Cell;
     ULONG ConvKey;
     LIST_ENTRY List;
     ULONG DescriptorLength;
     ULONG RealRefCount;
     SECURITY_DESCRIPTOR_RELATIVE Descriptor;
} CM_KEY_SECURITY_CACHE, *PCM_KEY_SECURITY_CACHE;

Windows Vista Kernel Structures