Dear sir .
   I'm doing my Master degree research on parallelizing the LUC algorithm,
   and the Extended Cubic LUC algorithm.
   I try first to program both of the algorithms sequentialy with the
   standard C language. And so far with small integers both the algorithms
   are working perfectlly, But the problem that I have encounter is how to
   deal with very larg primes such(p,q,N), since they are larger than the
   largest reserved field at the C language[unsigned long].
   And how to deal with non integer Plaintext, since the algorithm work
   with integers only.
   I will be so greatfull if you could feed my knowledge and illustrate
   those points to me.
   Thanks for your cooperation.............
   yours....
   ESAM ABULKHIRAT..
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References

   1. http://go.msn.com/bql/hmtag_itl_EN.asp