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(1) Encrypt console app. (2) Decode app.=> Decrypt (3) LocalSettings uses MemStream (4) PaddingMode.Zeros, ver. 2.18.1270

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This commit is contained in:
Milan Hanajik
2019-07-23 12:09:22 +02:00
parent e98d633d7f
commit e622718c27
16 changed files with 385 additions and 175 deletions
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TBF/LocalSettings.cs
+63 -51
View File
@@ -6,6 +6,7 @@ using System.IO;
using System.Security.Cryptography;
using System.Text;
using System.Xml.Serialization;
using log4net;
namespace TBF
{
@@ -19,12 +20,15 @@ namespace TBF
[XmlRootAttribute("TestBenchFramework")]
public class LocalSettings
{
static XmlSerializer serializer = XmlSerializer.FromTypes(new[] { typeof(LocalSettings) })[0];
private static readonly ILog log = LogManager.GetLogger(typeof(LocalSettings));
static XmlSerializer serializer = XmlSerializer.FromTypes(new[] { typeof(LocalSettings) })[0];
static byte[] cryptoKey = new byte[] { 235, 7, 236, 58, 24, 225, 97, 102, 231, 1, 121, 12, 177, 145, 87, 200,
102, 85, 152, 73, 230, 203, 101, 169, 242, 213, 228, 219, 239, 157, 245, 156 };
///
/// Configuration file ecryption/decryption key and initialization vector
///
static byte[] key = new byte[] { 83, 254, 105, 64, 184, 201, 195, 127, 52, 99, 77, 45, 252, 132, 163, 156 };
static byte[] IV = new byte[] { 189, 23, 137, 56, 204, 241, 242, 118, 28, 89, 9, 198, 224, 111, 186, 125 };
static byte[] cryptoIV = new byte[] { 189, 23, 137, 56, 204, 241, 242, 118, 28, 89, 9, 198, 224, 111, 186, 125 };
/// <summary>
/// User interface language (used as CultureInfo(..) constructor argument).
@@ -291,33 +295,37 @@ namespace TBF
if (isEncrypted)
{
int length = (int)(new FileInfo(fileName).Length);
/// Write settings to a string
StringBuilder plain = new StringBuilder();
Stream stream = File.OpenRead(fileName);
using (BinaryReader binaryReader = new BinaryReader(stream))
using (RijndaelManaged aes = new RijndaelManaged { Padding = PaddingMode.Zeros })
{
/// Load encrypted binary data into an array
byte[] encrypted = new byte[length];
int bytesRead = binaryReader.Read(encrypted, 0, length);
if (bytesRead != length) return null;
using (RijndaelManaged myRijndael = new RijndaelManaged())
using (FileStream fsCrypt = new FileStream(fileName, FileMode.Open))
{
// Create a decryptor to perform the stream transform.
ICryptoTransform decryptor = myRijndael.CreateDecryptor(cryptoKey, cryptoIV);
// Create the streams used for decryption.
using (MemoryStream msDecrypt = new MemoryStream(encrypted))
using (ICryptoTransform decryptor = aes.CreateDecryptor(key, IV))
{
using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
using (CryptoStream cs = new CryptoStream(fsCrypt, decryptor, CryptoStreamMode.Read))
{
using (StreamReader srDecrypt = new StreamReader(csDecrypt))
using (MemoryStream mStream = new MemoryStream())
{
TextReader txtReader = new StringReader(srDecrypt.ReadToEnd());
LocalSettings ls = serializer.Deserialize(txtReader) as LocalSettings;
using (var writer = new BinaryWriter(mStream))
{
int data;
while ((data = cs.ReadByte()) != -1)
{
if (data != 0) writer.Write((byte)data);
}
writer.Flush();
mStream.Position = 0;
ls.UpdateResultsOutputData();
return ls;
using (var reader = new StreamReader(mStream))
{
LocalSettings ls = serializer.Deserialize(reader) as LocalSettings;
log.WarnFormat("Succesfully loaded and decrypted from '{0}'", fileName);
ls.UpdateResultsOutputData();
return ls;
}
}
}
}
}
@@ -329,6 +337,7 @@ namespace TBF
using (StreamReader reader = new StreamReader(fileName))
{
LocalSettings ls = serializer.Deserialize(reader) as LocalSettings;
log.WarnFormat("Succesfully loaded from '{0}'", fileName);
ls.UpdateResultsOutputData();
return ls;
}
@@ -336,8 +345,8 @@ namespace TBF
}
catch (Exception e)
{
string msg = e.Message;
return null;
log.ErrorFormat("Failed to load from '{0}': {1}", fileName, e.Message);
return null;
}
}
@@ -346,44 +355,46 @@ namespace TBF
/// </summary>
public void Save()
{
UpdateResultsOutputData();
try
{
UpdateResultsOutputData();
#if PUCHONG_200
/// Write settings to an unencrypted file
using (TextWriter writer = new StreamWriter(Program.LocalSettingsFileName))
{
serializer.Serialize(writer, this);
log.Warn("LocalSettings succesfully saved");
}
#else
/// Write settings to a string
StringBuilder plain = new StringBuilder();
using (TextWriter writer = new StringWriter(plain))
/// Encrypt and write to file 'Program.LocalSettingsFileName'
using (RijndaelManaged aes = new RijndaelManaged { Padding = PaddingMode.Zeros })
{
serializer.Serialize(writer, this);
}
/// Encrypt and write to a file
using (RijndaelManaged myRijndael = new RijndaelManaged())
{
/// Create an encryptor to perform the stream transform.
ICryptoTransform encryptor = myRijndael.CreateEncryptor(cryptoKey, cryptoIV);
/// Create the streams used for encryption.
using (MemoryStream msEncrypt = new MemoryStream())
using (FileStream fsCrypt = new FileStream(Program.LocalSettingsFileName, FileMode.Create))
{
using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
using (ICryptoTransform encryptor = aes.CreateEncryptor(key, IV))
{
using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
using (CryptoStream cs = new CryptoStream(fsCrypt, encryptor, CryptoStreamMode.Write))
{
/// Write all data to the stream.
swEncrypt.Write(plain);
}
using (MemoryStream mStream = new MemoryStream())
{
using (var writer = new StreamWriter(mStream))
{
/// Serialize and write settings to a memory stream
serializer.Serialize(writer, this);
writer.Flush();
mStream.Position = 0;
Stream stream = File.OpenWrite(Program.LocalSettingsFileName);
using (BinaryWriter writer = new BinaryWriter(stream))
{
writer.Write(msEncrypt.ToArray());
using (var reader = new StreamReader(mStream))
{
/// Encrypt and write to file 'Program.LocalSettingsFileName'
int data;
while ((data = mStream.ReadByte()) != -1) cs.WriteByte((byte)data);
log.WarnFormat("Succesfully encrypted and saved to '{0}'", Program.LocalSettingsFileName);
}
}
}
}
}
}
@@ -392,10 +403,11 @@ namespace TBF
}
catch (Exception e)
{
string msg = e.Message;
log.ErrorFormat("Failed to save to '{0}': {1}", Program.LocalSettingsFileName, e.Message);
}
}
/// <summary>
/// To be able to have RealDensity and AtTemperatire in reports.
/// </summary>
TBF/Program.cs
-4
View File
@@ -107,7 +107,6 @@ namespace TBF
}
catch (Exception e)
{
log.Error("Fatal error when creating a local application data directory and preparing an initial configuration", e);
MessageBox.Show("Error creating a local application data directory and preparing an initial configuration", "Fatal error");
return; /// Fatal error
}
@@ -128,7 +127,6 @@ namespace TBF
Program.LocalSettings = LocalSettings.Load(Program.LocalSettingsBackupName);
if (Program.LocalSettings == null || Program.LocalSettings.TestBenches == null)
{
log.FatalFormat("Local settings: Could not load file {0}, nor {1}.", Program.LocalSettingsFileName, Program.LocalSettingsBackupName);
log.Fatal("Application terminated.");
MessageBox.Show(string.Format("Could not load file {0}, nor {1}.", Program.LocalSettingsFileName, Program.LocalSettingsBackupName), "Fatal error");
return; /// Fatal error
@@ -136,7 +134,6 @@ namespace TBF
else
{
LocalSettings.Save(); /// Save the settings to overwrite the wrong file
log.FatalFormat("Local settings: Could not load file {0}, successfully loaded {1}", Program.LocalSettingsFileName, Program.LocalSettingsBackupName);
log.FatalFormat("BatchNr = {0}", LocalSettings.BatchNr);
}
}
@@ -144,7 +141,6 @@ namespace TBF
{
/// Loading local seetings from the regular config file was successful. Update the backup
File.Copy(Program.LocalSettingsFileName, Program.LocalSettingsBackupName, true);
log.FatalFormat("Local settings: Successfully loaded from {0}", Program.LocalSettingsFileName);
log.FatalFormat("BatchNr = {0}", LocalSettings.BatchNr);
}
TBF/Properties/AssemblyInfo.cs
+2 -2
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@@ -29,5 +29,5 @@ using System.Runtime.InteropServices;
// Build Number
// Revision
//
[assembly: AssemblyVersion("2.18.1269.0")]
[assembly: AssemblyFileVersion("2.18.1269.0")]
[assembly: AssemblyVersion("2.18.1270.0")]
[assembly: AssemblyFileVersion("2.18.1270.0")]