Luis F. G. Sarmenta Marten van Dijk Charles W. O'Donnell Jonathan Rhodes Srinivas Devadas Virtual monotonic counters and count-limited objects using a TPM without a trusted OS. 27-42 2006 STC http://doi.acm.org/10.1145/1179474.1179485 conf/ccs/2006stc db/conf/ccs/stc2006.html#SarmentaDORD06