itunes auth 2020-02-23 hw-1 1234567891011itunes auth key=GetValue string=FairPlayCertificate --> certgenerate grappaID grappaDataGrappa(grappaData) --> afsync.rqcert rq --> rsbufferrsbuffer GrappaID --> sigBuffer (afsync.rs)/AirFair/sync/afsync.rq/AirFair/sync/afsync.rs libimobiledevice install /usr/lib/libauto.dylib: mach-o, but not built for iOS simulator