@TechReport{RSW96, author = { Ronald L. Rivest and Adi Shamir and David A. Wagner }, title = { Time-lock puzzles and timed-release crypto }, institution = { MIT Laboratory for Computer Science }, number = { Technical memo MIT/LCS/TR-684 }, date = { 1996-02 }, OPTyear = { 1996 }, OPTmonth = { February }, urla = { LCS page }, note = { (Revision 3/10/96) }, }