@article{1999-bernstein-stretch
,note={URL: {\tt http://cr.yp.to/papers.html}}
,author={Daniel J. Bernstein}
,ISSN={0933--2790}
,journal={Journal of Cryptology}
,pages={185--192}
,title={{How to stretch random functions: the security of protected counter sums}}
,volume={12}
,year={1999}
}