Kwangsu Lee Jung Yeon Hwang Dong Hoon Lee Non-interactive Identity-Based DNF Signature Scheme and Its Extensions. 166-183 2008 ICISC http://dx.doi.org/10.1007/978-3-642-00730-9_11 conf/icisc/2008 db/conf/icisc/icisc2008.html#LeeHL08