William McHale's Perl-Java ElGamal system revised
  use this to decrypt once you have "a"
  Also see C. Toole's  modification to the Perl code.


'. 



Chris McCubbins' SHANKS DLP Solver 

  
  euclid.h 
 


Jeff Walton's DLP Solver

  
BinaryHeap.java 

  
DLP.java 




   From David Bishop's book "Cryptography with Java Applets" 
  
instructions 
  
BigIntegerMath.java  
  
TestDiscreteLogApplet.java 

  
log.html needed html file 


  

   Christian Wagner has also contributed another solution 
      His program 'pohlighellman.cpp' requires a large size integer
      package that can be obtained free from the internet. It is easy
      to download and install----
  
instructions 
  
pohlighellman.cpp