Praveen Gauravaram William Millan Ed Dawson Kapali Viswanathan Constructing Secure Hash Functions by Enhancing Merkle-Damgård Construction. 407-420 2006 conf/acisp/2006 ACISP http://dx.doi.org/10.1007/11780656_34 db/conf/acisp/acisp2006.html#GauravaramMDV06