/****************************************************************************
	ringneckparrot (c)
	License: http://creativecommons.org/licenses/by-nc-sa/3.0/
	
	Contact Me:
	Email: ringneckparrot@hotmail.com
	Facebook: http://www.facebook.com/ringneckparrot
	Twitter ID: pp4rr0t
	SecurityTube: http://www.securitytube.net/user/ringneckparrot

****************************************************************************/

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

main(int argc, char **argv)
{
	int i;
	char *string;
	char encrypted_string[strlen(string)];
	char decrypted_string[strlen(string)];
	char *key_ch;
	char key_int;

	string = argv[1];
	key_ch = argv[2];
	key_int = atoi(key_ch);

	if (strcmp(argv[3], "encrypt") == 0)
	{
		i = 0;
		while(i <= strlen(string)-1)
		{
			encrypted_string[i] = string[i]+ key_int;
			i++;
		}
		
		printf("Encrypted String: ");
		i = 0;
		while (i <= strlen(string)-1 )
		{	
			printf("%c", encrypted_string[i]);
			i++;
		}
		printf("\n");
	}
	if (strcmp(argv[3], "decrypt") == 0)
	{
		i = 0;
		while(i <= strlen(string)-1)
		{
			decrypted_string[i] = string[i] - key_int;
			i++;
		}	
		
		printf("Decrypted String: ");
		i = 0;
		while(i <= strlen(string)-1)
		{
			printf("%c", decrypted_string[i]);
			i++;
		}

		printf("\n");
	}
}