in im have rasembled in this page cryptographic source code end project
 

 
                DES is a standart in crypto end is weel knot end verry secure :-)

 
                RSA is also weel knot (used in credit card transaction on web )       see this link for more

 
                RC4 is also a simple but veery secure system at this time no atack  is knot on this    ask me  ..
 

                if you have question about ther soft just drop me a mail :-)