#include <stdio.h>
#include <string.h>
#include <libsha1.h>

void printByte(unsigned char);

int main(int argc, char *argv[])
{
    unsigned char hash[20];
    int i;

    #ifndef LIBSHA1_NO_CTX
        sha1_ctx ctx;
    #endif

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

    #ifdef LIBSHA1_NO_CTX
        sha1(hash, argv[1], strlen(argv[1]));
    #else
        sha1_begin(&ctx);
        sha1_hash(argv[1], strlen(argv[1]), &ctx);
        sha1_end(hash, &ctx);
    #endif

    for (i=0; i<5; i++) printByte(byte); printf("\n");

    return 0;
}

void printByte(unsigned char byte)
{
    const char *digits = "0123456789abcdef";
    printf("%c%c", digits[byte / 16], digits[byte % 16]);
}