In　this　paper,　a　new　trusted　platform　module　(TPM)　anonymous　authentication　scheme　is　presented,　by　adding　a　ring　administrator　the　members　of　the　ring　can　be　ensured　that　they　are　the　legitimacy　TPMs,　the　safety　of　the　scheme　is　based　on　the　DDH　assumption　and　strong　one-way　function,　it　has　shorter　public　parameters　and　it　is　be　suitable　for　engineering.　©　2009　IEEE.