testrandomhex.cxx

这是国外的resip协议栈

#include <iostream>
#include <set>

#include "rutil/Data.hxx"
#include "rutil/Random.hxx"

using namespace std;
using namespace resip;

int main(int argc, char** argv)
{
   int runs = 1000;
   int length = 8;

   if(argc == 3)
   {
      runs = atoi(argv[1]);
      length = atoi(argv[2]);
   }

   //Random::initialize();

   if (runs <= 0 || length <= 0)
   {
      cerr << "usage: testRandomHex number_of_tries string_length" << endl
           << "number_of_tries and string_length must be a positive integers." << endl;
      exit(-1);
   }

   cerr << "Generating " << runs << " random " << length << " byte strings and checking for uniqueness." << endl;

   set<Data> randomDatas;
   
   for (int i = 0; i < runs; i++)
   {
      Data foo = Random::getRandomHex(length/2);
      cerr << foo << endl;
      if (randomDatas.insert(foo).second == false)
      {
         cerr << "RandomHex produced a duplicate" << length << "byte string after " << i << " runs. " << endl;
         exit(-1);
      }
   }

   cerr << endl << "Now doing crypto random" << endl;
   
   for (int i = 0; i < runs; i++)
   {
      Data foo = Random::getCryptoRandomHex(length/2);
      cerr << foo << endl;
      if (randomDatas.insert(foo).second == false)
      {
         cerr << "RandomHex produced a duplicate" << length << "byte string after " << i << " runs. " << endl;
         exit(-1);
      }
   }

   cerr << "Success." << endl;
   return 0;
}


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