marcomagdy

class Program
    {
        static void Main(string[] args) {
            var secretByets = Base32Encoding.ToBytes("supersecretpassword");
            var input = GetEpoch() / 30;
            var hmac = new HMACSHA1(secretByets);

            var output = hmac.ComputeHash(toBytes(input));
            Console.WriteLine("{0:d6}", calculate(output));

marcomagdy

enum { BMAX = 32, BMIN = BMAX / 2, BHEIGHT = 6 };

struct BNode {
    uint32_t length;
    Key keys[BMAX];
    union {
        BNode *children[BMAX];
        Value values[BMAX];
    };
};

marcomagdy

enum { BMAX = 32, BCUT = BMAX / 2, BHEIGHT = 6 };

typedef uint8_t BIndex;

struct BNode {
    BIndex length;
    Key keys[BMAX];
    union {
        BNode *children[BMAX];
        Value values[BMAX];

marcomagdy

// Build with > clang++ -std=c++17 pinger.cpp -o pinger -Wall -Werror -fsanitize=address,undefined

#include <arpa/inet.h>
#include <netdb.h>
#include <netinet/ip_icmp.h>
#include <signal.h>
#include <stdio.h>
#include <unistd.h>

#include <string>