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

/**
 * crypto/shachain - compactly-representable chain of 256-bit numbers.
 *
 * This code produces a practically infinite (2^64) chain of 256-bit numbers
 * from a single number, such that you can't derive element N from any element
 * less than N, but can efficiently derive element N from a limited number
 * of elements >= N.
 *
 * License: BSD-MIT
 * Author: Rusty Russell <rusty@rustcorp.com.au>
 */
int main(int argc, char *argv[])
{
	/* Expect exactly one argument */
	if (argc != 2)
		return 1;

	if (strcmp(argv[1], "depends") == 0) {
		printf("ccan/ilog\n");
		printf("ccan/crypto/sha256\n");
		return 0;
	}

	return 1;
}