@inproceedings{1986-desmedt ,note={URL: {\tt http://cr.yp.to/\allowbreak bib/\allowbreak entries.html\#\allowbreak 1986/\allowbreak desmedt}} ,author={Yvo Desmedt} ,crossref={1986-williams} ,pages={42--55} ,title={{Unconditionally secure authentication schemes and practical and theoretical consequences}} ,year={1986} }