#include <stdio.h>
#include <string.h>
#include <rpc/des_crypt.h>

#define LEN 8

char* code_to_msg(int code)
{
     switch (code) {  
     case DESERR_NONE:
	  return "No error";
     case DESERR_NOHWDEVICE:
	  return "Encryption succeeded, but done in software";
     case DESERR_HWERROR:
	  return "An error occurred in the hardware or driver.";
     case DESERR_BADPARAM:
	  return "Bad argument to routine.";
     default:
	  return "Unknown code";
     }
}

int main(void)
{
     char key1[LEN] = "testkey1";
     char key2[LEN] = "T3S7k3y2";
     char secret1[LEN] = "secret 1";
     char secret2[LEN] = "Hello !!";
     char secret3[LEN] = "MoreText";
     char ivec[LEN] = "01234567";
     
     des_setparity(key1);
     int ret = ecb_crypt(key1, secret1, LEN, DES_ENCRYPT);
     printf("ecb_crypt result: %s | key: %.*s, encrypted buf: %.*s\n",
	    code_to_msg(ret), LEN, key1, LEN, secret1);
     
     ret = ecb_crypt(key1, secret1, LEN, DES_DECRYPT);
     printf("ecb_crypt result: %s | key: %.*s, decrypted buf: %.*s\n",
	    code_to_msg(ret), LEN, key1, LEN, secret1);
     
     ret = ecb_crypt(key2, secret2, LEN, DES_ENCRYPT);
     printf("ecb_crypt (without des_setparity) result: %s | "
	    "key: %.*s, encrypted buf: %.*s\n",
	    code_to_msg(ret), LEN, key2, LEN, secret2);

     ret = cbc_crypt(key1, secret3, LEN, DES_ENCRYPT, ivec);
     printf ("cbc_crypt resutl %s | key: %.*s, encrypted buf: %.*s\n",
	     code_to_msg(ret), LEN, key1, LEN, secret3);
     printf ("ivec: %.*s\n", LEN, ivec);
     
     return 0;     
}

/* output
restricted@prison1:/usr/home/restricted/projects/ecb_crypt % uname -rps
FreeBSD 10.1-STABLE amd64
restricted@prison1:/usr/home/restricted/projects/ecb_crypt % cc poc.c -o poc
restricted@prison1:/usr/home/restricted/projects/ecb_crypt % ./poc
ecb_crypt result: Encryption succeeded, but done in software | key: udsukdy1,
 encrypted buf: secret 1                                                    
ecb_crypt result: Encryption succeeded, but done in software | key: udsukdy1,
 decrypted buf: secret 1                                                    
ecb_crypt (without des_setparity) result: Encryption succeeded, but done in s
oftware | key: T3S7k3y2, encrypted buf: Hello !!                            
cbc_crypt resutl Encryption succeeded, but done in software | key: udsukdy1, 
encrypted buf: MoreText
*/