Secure Instant Messaging has following features:
- Secure IP Messaging with private\public keys
- RSA decryption/encryption
- Generate key pair and save keys as files
In cryptography, Triple DES (3DES or TDES) is a symmetric-key block cipher, which applies the DES cipher algorithm three times to each data block.
https://en.wikipedia.org/w/index.php?title=Triple_DES&oldid=995820064
To use 3DES functionality first off all we need to include “System.Security.Cryptography”.
using System.Security.Cryptography;
Then we should create and adjust an object which will do encryption:
var tdese = TripleDES.Create();
tdese.Mode = CipherMode.ECB;
tdese.Padding = PaddingMode.PKCS7;
tdese.Key = ConvertHexStringToByteArray("AABBCCDDEE11223344556677889900FF");
var encryptor = tdese.CreateEncryptor();
“ConvertHexStringToByteArray” function to convert hex string to byte array:
public static byte[] ConvertHexStringToByteArray(string hexString)
{
if (hexString.Length % 2 != 0)
{
throw new ArgumentException(String.Format(CultureInfo.InvariantCulture, "The binary key cannot have an odd number of digits: {0}", hexString));
}
byte[] HexAsBytes = new byte[hexString.Length / 2];
for (int index = 0; index < HexAsBytes.Length; index++)
{
string byteValue = hexString.Substring(index * 2, 2);
if (byteValue == " ")
{
HexAsBytes[index] = Convert.ToByte("32");
}
else
{
HexAsBytes[index] = byte.Parse(byteValue, NumberStyles.HexNumber, CultureInfo.InvariantCulture);
}
}
return HexAsBytes;
}
Source code below shows how to use object “encryptor” to encrypt the file “FileToEncrypt.txt”.
byte[] result = null;
byte[] data = File.ReadAllBytes("FileToEncrypt.txt");
using (var mse = new MemoryStream())
{
using (var cs = new CryptoStream(mse, encryptor, CryptoStreamMode.Write))
cs.Write(data, 0, data.Length);
result = mse.ToArray();
}
if (result != null)
{
string encrypteddata = UTF8Encoding.Default.GetString(result);
File.AppendAllText("OutputFileName" + ".enc", encrypteddata, UTF8Encoding.Default);
}
With this code we can store our file “FileToEncrypt.txt” encrypted as “OutputFileName.enc”. Decryption can be done with “tdese.CreateDecryptor();”.
A IoT device programmed with Arduino need connect to WiFi at start of device to use internet for data transfer etc. First of all we need to include header file “WiFiClient” to our sketch.
#include <WiFiClient.h>
With code below we will let user enter WiFi credentials over serial communication. we should add this code to our setup() part of our Arduino sketch.
Serial.write("Please enter name of your wifi network\n");
while(Serial.available() == 0){};
String Uid=Serial.readStringUntil('\n');
Serial.write("Please enter password of your wifi network\n");
while(Serial.available() == 0){};
String pass= Serial.readStringUntil('\n');
If you want give user a tool to setup WiFi over serial you can download a free serial communication tool “Vengito Serial Tool”. With this tool user can connect IoT device easily and enter WiFi credentials.
After user entered credentials device should try connecting to internet. Code below have 3 parts and also should be in setup() part of our sketch. First part disconnects from any WiFi network if it is connected already. Second part starts connection with Wifi.begin function. And the last part waits connecting and gives IP address of device over serial port if device connected WiFi successfully.
WiFi.disconnect();
delay(1000);
WiFi.begin(Uid, pass); //begin WiFi connection
Serial.println("Started");
unsigned long startedWaiting = millis();
// Wait for connection
while (WiFi.status() != WL_CONNECTED && millis() - startedWaiting <= 25000)
{
delay(500);
Serial.print("*");
}
if(WiFi.status() != WL_CONNECTED)
{
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
}
You can try this code with ESP8266 or any other chip which supports Arduino.
In this video i will give 4 simple examples of using LabVIEW.
Examples:
- Display a simple sine wave
- Algebraic loop example
- Get value of array element
- Build array with for loop
In this video i will give 4 simple examples of using Scilab Xcos for simulation.
Examples:
- Display a simple sine wave
- Algebraic loop example
- Example for lookup table
- Example for derivative of time dependent function (derivative of x²: 2x)
RoomLog measures ambient temperature and humdity.According to setted min and max values RoomLog sends email (if enabled) and activates 3.3V digital outputs. RoomLog also checks fire and smoke.If RoomLog detects fire or smoke, it sends email and activates 3.3V digital outputs.
- Monitor ambient temperature and humidity
- Check fire and smoke around
- 3.3V Alarm Output for Temp., Humidity, Fire and Smoke
- Sends Alarm Emails
- Linux OS
File Privacy has following features:
- File decryption/encryption (3DES)
- File compare for cryptography
- Create random key hex string and save as file
- Hex string based decryption/encryption
After calibrating and setting maximum and minimum limits this device gives 3.3V output if limit exceeded. It has 4 sensor connections available and accordingly has four 3.3V digital output connections. Raw sensor value will be multiplied with a constant value and an other constant value will be added to have calibrated value. This calibrated sensor value will be compared with setted limits for decision of 3.3V outputs.
• Four ±10V Sensor Input
• Four 3.3V Alarm Output
• Monitor ambient temperature and humidity
• Linux OS
ProduLog — Machine Monitoring System
• Devices on Wi-Fi network will found automatically
• Every device gets a label
• 4 counter per device (24V Input)
• Monitor counters online
• Generate daily and monthly reports at any time
• Automatically sending reports via mail
• Data logging customizable in minute or hour
• Track history of counters
• 200 Counter (50 device) per server
Convert Files has following features:
- Convert pdf files to text files
- Convert xlsx files to csv files
- Convert bmp files to jpg files and vice versa
- Convert bmp files to png files and vice versa
- Convert png files to jpg files and vice versa
- Convert mp3 files to wav files and vice versa
- Convert mp3 files to wma files and vice versa
- Convert wav files to wma files and vice versa
- Convert mp4 files to avi files and vice versa
- Convert mp4 files to wmv files and vice versa
- Convert avi files to wmv files and vice versa
Password List Generator has following features:
- Create file with unique random passwords
- Calculate hash of password files and hash of passwords
- Split password list file in files with desired number of passwords
CRM 365 Tool is using service connection of Microsoft Dynamics 365 system to export and search data from that system. It has following features:
- Export entity collections of Microsoft Dynamics 365 system
- Search in attributes of Microsoft Dynamics 365 system
