Guilin Wang Joonsang Baek Duncan S. Wong Feng Bao On the Generic and Efficient Constructions of Secure Designated Confirmer Signatures. 43-60 2007 conf/pkc/2007 Public Key Cryptography http://dx.doi.org/10.1007/978-3-540-71677-8_4 db/conf/pkc/pkc2007.html#WangBWB07