The Institute for Defense Analyses, based in Alexandria, VA,
   is a 50-year partner of NSA. It has two Centers for Communications
   Research at Princeton, NJ, and La Jolla, CA, both doing cryptological
   research for NSA:
   [1]http://www.idaccr.org/
   [2]http://www.ccrwest.org/
   The latter's web site lists only this offering:
   [Quote]

                          La Jolla Covering Repository

   A (v,k,t)-covering design is a collection of k-element subsets, called
   blocks, of {1,2,...,v}, such that any t-element subset is contained in
   at least one block.  This site contains a collection of good
   (v,k,t)-coverings. Each of these coverings gives an upper bound for the
   corresponding C(v,k,t), the smallest possible number of blocks in such
   a covering design.
   The limit for coverings is v<100, k<=25, and t<=8 just to draw the line
   somewhere. Only coverings with at most 100000 blocks are given, except
   for some which were grandfathered in. Some Steiner systems (coverings
   in which every t-set is covered exactly once) which are too big for the
   database will be included in the link below.
   [Unquote]
   What is "covering" and how does it related to cryptology?
   -----
   Eyeballs of the two centers:
   [3]http://cryptome.org/2013-info/09/nsa-ccr/nsa-ccr.htm

References

   1. http://www.idaccr.org/
   2. http://www.ccrwest.org/
   3. http://cryptome.org/2013-info/09/nsa-ccr/nsa-ccr.htm