\input zb-basic \input zb-ioport \iteman{io-port 70989029} \itemau{Mannan, Mohammad; Kim, Beom Heyn; Ganjali, Afshar; Lie, David} \itemti{Unicorn: two-factor attestation for data security} \itemso{ACM Conference on Computer and Communications Security, 17-28 (2011).} \itemcc{} \itemut{} \itemli{doi:10.1145/2046707.2046712} \end