iokit/Kernel/IOHibernateIO.cpp

1342 	    AppleRTCHibernateVars rtcVars;
1344 	    rtcVars.signature[0] = 'A';
1345 	    rtcVars.signature[1] = 'A';
1346 	    rtcVars.signature[2] = 'P';
1347 	    rtcVars.signature[3] = 'L';
1348 	    rtcVars.revision     = 1;
1349 	    bcopy(&vars->wiredCryptKey[0], &rtcVars.wiredCryptKey[0], sizeof(rtcVars.wiredCryptKey));
1355 		    (c = gIOHibernateBootSignature[i]) && (i < (sizeof(rtcVars.booterSignature) << 1));
1368 			rtcVars.booterSignature[i >> 1] = value;
1371 	    data = OSData::withBytes(&rtcVars, sizeof(rtcVars));