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AES-256 encryption and decryption in PHP and C#

Update: There is a more secure version available. Details

PHP

<?php

$plaintext = 'My secret message 1234';

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public class SimpleJSON {

    public static Object toJSON(Object object) throws JSONException {
        if (object instanceof HashMap) {
            JSONObject json = new JSONObject();
            HashMap map = (HashMap) object;
            for (Object key : map.keySet()) {
                json.put(key.toString(), toJSON(map.get(key)));
            }
            return json;

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import java.net.URL;
import java.security.SecureRandom;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.KeyManager;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.TrustManager;

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#Update your package.

$ sudo apt-get update
$ sudo apt-get install apache2

# Open up the main configuration file with your text edit:

ServerName server_domain_or_IP

$ sudo systemctl restart apache2

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#!/bin/bash

export DEBIAN_FRONTEND=noninteractive

# General utils
sudo apt-get -y update
sudo apt-get -y upgrade
sudo apt-get -y install unzip
sudo apt-get -y install software-properties-common python-software-properties