herpiko

Membuat sertifikat self-signed

openssl req -newkey rsa:2048 -nodes -keyout key.pem -x509 -days 365 -out cert.pem

Melihat isi sertifikat

openssl x509 -in cert.pem -text

PEM dan DER

kchristidis

There doesn't seem to be a good resource online describing the issues with protocol buffers and deterministic serialization (or lack thereof). This is a collection of links on the subject.

Protocol Buffers v3.0.0. release notes:

The deterministic serialization is, however, NOT canonical across languages; it is also unstable across different builds with schema changes due to unknown fields.

Maps documentation:

Wire format ordering and map iteration ordering of map values is undefined, so you cannot rely on your map items being in a particular order.

SergioDiniz

<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence
             http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"
             version="2.1">

    <persistence-unit name="persistenceUnitName" transaction-type="RESOURCE_LOCAL">

        <properties>
            <property name="javax.persistence.jdbc.driver" value="org.postgresql.Driver" /> <!-- DB Driver -->

VimleshS

#Reference
#https://devnotcorp.wordpress.com/2012/08/21/usage-examples-of-rubys-openssl-lib/



#!/usr/bin/ruby
require 'openssl'
require 'date'
require 'time'
 

puf

package com.google.firebase.zerotoapp;

public class ChatMessage {
    public String name;
    public String message;

    public ChatMessage() {
    }

    public ChatMessage(String name, String message) {

CMCDragonkai

HTTP Streaming (or Chunked vs Store & Forward)

The standard way of understanding the HTTP protocol is via the request reply pattern. Each HTTP transaction consists of a finitely bounded HTTP request and a finitely bounded HTTP response.

However it's also possible for both parts of an HTTP 1.1 transaction to stream their possibly infinitely bounded data. The advantages is that the sender can send data that is beyond the sender's memory limit, and the receiver can act on

meoyawn

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.util.AttributeSet;
import android.view.View;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

public class EmptyRecyclerView extends RecyclerView {
  @Nullable View emptyView;

magnetikonline

<?php
// https://gist.github.com/magnetikonline/650e30e485c0f91f2f40

class DumpHTTPRequestToFile {
	public function execute($targetFile) {
		$data = sprintf(
			"%s %s %s\n\nHTTP headers:\n",
			$_SERVER['REQUEST_METHOD'],
			$_SERVER['REQUEST_URI'],
			$_SERVER['SERVER_PROTOCOL']

ymnk

// The following code is from http://www.academicpub.org/PaperInfo.aspx?PaperID=14496 .
import java.math.BigInteger;
import java.security.*;
import java.security.spec.*;
import javax.crypto.KeyAgreement;

public class ECCKeyAgreement {
  public static void main(String[] args) throws Exception {
    KeyPairGenerator kpg;
    kpg = KeyPairGenerator.getInstance("EC","SunEC");

aodin

package main

import (
	"encoding/json"
	"io/ioutil"
	"log"
	"net/http"
)

type Message struct {