Advanced Warfare FastFiles?

#define FF_SIGNATURE  "\x53\x31\x66\x66\x75\x31\x30\x30\x2E\x07" // "S1ffu100"

FS_OpenFile() - 0x1404B7890

struct FFDef{
     HANDLE ff_handle; // 0x0000
     INT64 ff_posInMemory; // 0x0008 - The relative index position in memory
     char* ff_signature; // 0x0010
     char ff_name[64];    // 0x0018 - This seems to be encrypted. It's xor'd with a simple key.
}