Lars E. Olson Michael J. Rosulek Marianne Winslett Harvesting credentials in trust negotiation as an honest-but-curious adversary. 64-67 2007 WPES http://doi.acm.org/10.1145/1314333.1314345 conf/wpes/2007 db/conf/wpes/wpes2007.html#OlsonRW07