‪Black Box
BBMiBandDataEncryption.cs
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1 using BBSensorDataEncryptor;
2 using System;
3 using System.IO;
4 using System.Security.Cryptography;
5 using System.Text;
6 
8 {
10  {
11  private static string ‪pSensor = "";
12  private static string ‪SensorKey = BBSensorDataEncrypDecrypKey.sKey();
13  private static string ‪SensorIV = BBSensorDataEncrypDecrypKey.sIV();
14  private static byte[] ‪SensorIVByte = { };
15  private static byte[] ‪SensorKeyByte = { };
16  private static byte[] ‪inputByteArray;
17  private static MemoryStream ‪ms = null;
18  private static CryptoStream ‪cs = null;
19  private static readonly string ‪dataPath = @"BBPS\BBMibandData.xml";
20 
26  public static void ‪EncryptData(string SensorData)
27  {
28  ‪SensorIVByte = Encoding.UTF8.GetBytes(‪SensorIV.Substring(0, 8));
29  ‪SensorKeyByte = Encoding.UTF8.GetBytes(‪SensorKey.Substring(0, 8));
30 
31  ‪inputByteArray = Encoding.UTF8.GetBytes(SensorData);
32  using (DESCryptoServiceProvider des = new DESCryptoServiceProvider())
33  {
34  ‪ms = new MemoryStream();
35  ‪cs = new CryptoStream(‪ms, des.CreateEncryptor(‪SensorKeyByte, ‪SensorIVByte), CryptoStreamMode.Write);
36  ‪cs.Write(‪inputByteArray, 0, ‪inputByteArray.Length);
37  ‪cs.FlushFinalBlock();
38  ‪pSensor = Convert.ToBase64String(‪ms.ToArray());
39  }
40  // Save encrypted data to a file
42  }
43 
47  private static void ‪SaveSensorData()
48  {
49  if (!File.Exists(‪dataPath))
50  {
51  File.WriteAllText(‪dataPath, ‪pSensor + Environment.NewLine);
52  }
53 
54  File.AppendAllText(‪dataPath, ‪pSensor + Environment.NewLine);
55  }
56  }
57 }
‪static void SaveSensorData()
‪Store encrypted sensor data
‪static void EncryptData(string SensorData)
‪This method encrypts the sensor data