hashit.c

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

#include <stdbool.h>
#include <gcrypt.h>
#include <errno.h>
#include <time.h>

#include "login.h"

int main(int argc, char** argv) 
{
  time_t thetime = time(NULL);
  printf("hashit v0.1 - %s", ctime(&thetime));  
  clock_t start, end;
  start = clock();
  int algo;
  char buffer[1<<12];
  char final[1<<12];
  gcrypt_init();
  printf("These are the available algorithms: \n\
    GCRY_MD_MD5     = 1,\n\
    GCRY_MD_SHA1    = 2,\n\
    GCRY_MD_RMD160  = 3,\n\
    GCRY_MD_TIGER   = 6,   /* TIGER/192 as used by gpg <= 1.3.2. */\n\
    GCRY_MD_SHA256  = 8,\n\
    GCRY_MD_SHA384  = 9,\n\
    GCRY_MD_SHA512  = 10,\n\
    GCRY_MD_SHA224  = 11,\n\
    GCRY_MD_MD4     = 301,\n\
    GCRY_MD_CRC32   = 302,\n\
    GCRY_MD_CRC32_RFC1510 = 303,\n\
    GCRY_MD_CRC24_RFC2440 = 304,\n\
    GCRY_MD_WHIRLPOOL = 305,\n\
    GCRY_MD_TIGER1  = 306, /* TIGER fixed.  */\n\
    GCRY_MD_TIGER2  = 307  /* TIGER2 variant.   */\n");
  
  printf("Please enter the number of the desired algorithm: ");
  scanf("%i", &algo);
  bool rangeOk = false;
  if ((algo > 0 && algo < 12 && (algo != 4 && algo != 5 && algo != 7)) || (algo > 300 && algo < 308))
    rangeOk = true;
  
  if (!rangeOk) { 
    printf("Select a valid algorithm please\n");
    abort();   
  }
  
  char* ptr = buffer;
  getchar(); // fall thru without this call 
  printf("What value do you want to hash? ");  
  fgets(ptr, sizeof buffer, stdin);  
  ptr[strlen(ptr)-1] = '\0'; // remove '\n' of fgets
    
  char* hash = final;  
  hash_func(ptr, hash, algo, GCRY_MD_FLAG_SECURE);    
  printf("\"%s\" hashed is:\n%s\n", ptr, hash);
  end = clock();
  double execution_time = (double) ((end - start) / CLOCKS_PER_SEC);
  printf("Execution of the program took %.12lf secs\n",execution_time); //(double) ((end - start) / CLOCKS_PER_SEC) );

  return 0;  
  
}