@article{1976-diffie ,note={URL: {\tt http://cr.yp.to/\allowbreak bib/\allowbreak entries.html\#\allowbreak 1976/\allowbreak diffie}} ,author={Whitfield Diffie and Martin Hellman} ,ISSN={0018--9448} ,journal={IEEE Transactions on Information Theory} ,MR={55:10141} ,pages={644--654} ,title={{New directions in cryptography}} ,volume={22} ,year={1976} }