🚀 go-pugleaf

I plan to write a C program to implement the RSA (Rivest-Shamir-Adleman)
Public Key Cryptosystem.  Because the scheme requires large block lengths
for security, I require arbitrary precision arithmetic functions.  I'd
like to port the program to a PC eventually, therefore I ultimately need
a source library of these functions.  If you know of such a library in 
the public domain, please post/email information as to how I could get a copy.
Please do not email the library. 

Alternatively, please inform me if you know of any robust RSA programs.  I
imagine such a program will soon become standard on Unix as the crypt()
function implements the much-maligned DES. 

Jason J. W. Lisenchuk
4B Computer Science, Combinatorics and Optimization
Faculty of Mathematics
University of Waterloo