An Efficient Signcryption Scheme with Key Privacy. - Chung Ki Li; Guomin Yang; Duncan S. Wong; Xiaotie Deng; Sherman S. M. Chow (EuroPKI, 2007)

Signcryption from randomness recoverable public key encryption. - Chung Ki Li; Duncan S. Wong (Inf. Sci., 2010)

An efficient signcryption scheme with key privacy and its extension to ring signcryption. - Chung Ki Li; Guomin Yang; Duncan S. Wong; Xiaotie Deng; Sherman S. M. Chow (J. Comput. Secur., 2010)