Katrin Hoeper Guang Gong Short Paper: Limitations of Key Escrow in Identity-Based Schemes in Ad Hoc Networks. 403-405 2005 SecureComm http://doi.ieeecomputersociety.org/10.1109/SECURECOMM.2005.43 conf/securecomm/2005 db/conf/securecomm/securecomm2005.html#HoeperG05