public static string GetMD5HashAsHexString(byte[] data)
{
var md5Implementation = System.Security.Cryptography.MD5.Create();
byte[] hashData = md5Implementation.ComputeHash(data);
return(GeneralConverters.ByteArrayToHexString(hashData));
}
public static string GetSHA512HashAsHexString(byte[] data)
{
System.Security.Cryptography.SHA256 sha512Implementation = System.Security.Cryptography.SHA256.Create();
var hashData = sha512Implementation.ComputeHash(data);
return(GeneralConverters.ByteArrayToHexString(hashData));
}
public static string GetCRC326HashAsHexString(byte[] data)
{
var crc32Implementation = new CRC32();
byte[] hashData = crc32Implementation.ComputeHash(data);
return(GeneralConverters.ByteArrayToHexString(hashData));
}
private void UpdateHashTextField(object sender, EventArgs e)
{
if (hashBytes != null)
{
currentHashOutputTextBox.Text = GeneralConverters.ByteArrayToHexString(hashBytes);
}
}
private static string CreateApplicationSalt()
{
var randomBytes = new byte[512];
using (RandomNumberGenerator random = RandomNumberGenerator.Create())
{
random.GetBytes(randomBytes);
return(GeneralConverters.ByteArrayToHexString(randomBytes));
}
}
public void TestPasswordDerivates()
{
RandomNumberGenerator rng = RandomNumberGenerator.Create();
byte[] salt = new byte[32];
rng.GetBytes(salt);
string password = SHA256.GetSHA256HashAsHexString(GeneralConverters.StringToByteArray("MartinDahl"));
Rfc2898DeriveBytes pDeriveBytes = new Rfc2898DeriveBytes(password, salt, 1000);
Rfc2898DeriveBytes pDeriveBytes2 = new Rfc2898DeriveBytes(password, salt, 1000);
string a1 = GeneralConverters.ByteArrayToHexString(pDeriveBytes.GetBytes(16));
string a2 = GeneralConverters.ByteArrayToHexString(pDeriveBytes2.GetBytes(16));
Assert.IsTrue(a1 == a2, "Passwords derived was not correct");
}
public void GenrateSFVFile(StringCollection filePathCollection, string sfvFilename)
{
using (var fs = File.Create(sfvFilename))
{
var CRC32HashImplemenation = new CRC32();
// Write Header
var sw = new StreamWriter(fs);
sw.WriteLine(CHECKSUM_FILE_HEADER, _applicationName, DateTime.Now.ToString("yyyy-MM-dd"), DateTime.Now.ToString("HH:mm:ss"));
_checksumProgress.FilesTotal = filePathCollection.Count;
_checksumProgress.Text = "Generating SFV file header";
if (_progress != null)
{
_progress.Report(_checksumProgress);
}
foreach (string filename in filePathCollection)
{
var fileInfo = new FileInfo(filename);
if (!fileInfo.Exists)
{
_checksumProgress.FilesTotal = _checksumProgress.FilesTotal - 1;
continue;
}
sw.WriteLine(CHECKSUM_FILE_INFO, FormatFileSize(fileInfo.Length, 14), fileInfo.LastWriteTime.ToString("HH:mm:ss"), fileInfo.LastWriteTime.ToString("yyyy-MM-dd"), GeneralConverters.GetFileNameFromPath(filename));
}
foreach (string filename in filePathCollection)
{
_checksumProgress.Text = "Processing file: " + filename;
if (_progress != null)
{
_progress.Report(_checksumProgress);
}
var fileInfo = new FileInfo(filename);
if (!fileInfo.Exists)
{
continue;
}
try
{
string hexChecksum = GeneralConverters.ByteArrayToHexString(CRC32HashImplemenation.ComputeHash(fileInfo.OpenRead()));
sw.WriteLine(GeneralConverters.GetFileNameFromPath(filename) + " " + hexChecksum);
_checksumProgress.DataRead = _checksumProgress.DataRead + fileInfo.Length;
}
catch (Exception ex)
{
_checksumProgress.Text = ex.Message;
}
_checksumProgress.FilesCompleted = _checksumProgress.FilesCompleted + 1;
_checksumProgress.TotalProgress = _checksumProgress.FilesCompleted * 100 / _checksumProgress.FilesTotal;
if (_progress != null)
{
_progress.Report(_checksumProgress);
}
}
fs.Flush();
fs.Close();
if (_progress != null)
{
_checksumProgress.Text = "SFV file generation completed";
_checksumProgress.TotalProgress = 100;
_checksumProgress.Completed = true;
_progress.Report(_checksumProgress);
}
}
}