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cert.c

/*
 * This crypt(3) validation program shipped with UFC-crypt
 * is derived from one distributed with Phil Karns PD DES package.
 *
 * @(#)cert.c     1.8 11 Aug 1996
 */

#include <stdio.h>
#include <stdlib.h>
#include "crypt.h"

int totfails = 0;

#if __STDC__ - 0
int main (int argc, char *argv[]);
void get8 (char *cp);
void put8 (char *cp);
void good_bye (void) __attribute__ ((noreturn));
#else
void get8(), put8();
#endif

void good_bye ()
{
  if(totfails == 0) {
    printf("Passed DES validation suite\n");
    exit(0);
  } else {
    printf("%d failures during DES validation suite!!!\n", totfails);
    exit(1);
  }
}

int
main(argc, argv)
     int argc;
     char *argv[];
{
      char key[64],plain[64],cipher[64],answer[64];
      int i;
      int test;
      int fail;

      for(test=0;!feof(stdin);test++){

            get8(key);
            printf(" K: "); put8(key);
            setkey(key);

            get8(plain);
            printf(" P: "); put8(plain);

            get8(answer);
            printf(" C: "); put8(answer);

            for(i=0;i<64;i++)
                  cipher[i] = plain[i];
            encrypt(cipher, 0);

            for(i=0;i<64;i++)
                  if(cipher[i] != answer[i])
                        break;
            fail = 0;
            if(i != 64){
                  printf(" Encrypt FAIL");
                  fail++; totfails++;
            }

            encrypt(cipher, 1);

            for(i=0;i<64;i++)
                  if(cipher[i] != plain[i])
                        break;
            if(i != 64){
                  printf(" Decrypt FAIL");
                  fail++; totfails++;
            }

            if(fail == 0)
                  printf(" OK");
            printf("\n");
      }
      good_bye();
}
void
get8(cp)
char *cp;
{
      int i,j,t;

      for(i=0;i<8;i++){
            scanf("%2x",&t);
            if(feof(stdin))
              good_bye();
            for(j=0; j<8 ; j++) {
              *cp++ = (t & (0x01 << (7-j))) != 0;
            }
      }
}
void
put8(cp)
char *cp;
{
      int i,j,t;

      for(i=0;i<8;i++){
        t = 0;
        for(j = 0; j<8; j++)
          t = (t<<1) | *cp++;
        printf("%02x", t);
      }
}

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