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

// Declare the function from sha0.c
void Internal_Sha0(unsigned char *dest, const unsigned char *src, const unsigned int size);

#define SHA0_DIGEST_SIZE 20

int main(int argc, char **argv) {
    if (argc != 2) {
        fprintf(stderr, "Usage: %s <string>\n", argv[0]);
        return 1;
    }

    unsigned char digest[SHA0_DIGEST_SIZE];
    Internal_Sha0(digest, (const unsigned char *)argv[1], strlen(argv[1]));

    for (int i = 0; i < SHA0_DIGEST_SIZE; i++) {
        printf("%02x", digest[i]);
    }
    printf("\n");

    return 0;
}