30 Days of CTF: Day 2

simple_keycheck2.c

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

int main(int argc, char *argv[])
{
	int i, sum = 0;
	if (argc != 2) {
		printf("Improper input\nUsage: ./simple_keygen <KEY>\n");
		return -1;
	}

	for (i = 0; i < strlen(argv[1]); i++) {
		sum = sum + (int)argv[1][i];
	}

	if (sum == 1384) {
		printf("Correct key. Congrats!\n");
		return 0;
	}
	printf("Incorrect key\n");
	return 0;
}