/// <summary>
/// Given a file path, compute the file hashes.
/// </summary>
/// <param name="filePath"></param>
/// <param name="md5Hash"></param>
/// <param name="sha1Hash"></param>
/// <param name="sha256Hash"></param>
public static void ComputeHashes(string filePath, out byte[] md5Hash, out byte[] sha1Hash, out byte[] sha256Hash)
{
using (var md5 = MD5Cng.Create())
using (var sha1 = SHA1Cng.Create())
using (var sha256 = SHA256Cng.Create())
using (var input = File.OpenRead(filePath))
{
byte[] buffer = new byte[8192];
int bytesRead;
while ((bytesRead = input.Read(buffer, 0, buffer.Length)) > 0)
{
md5.TransformBlock(buffer, 0, bytesRead, buffer, 0);
sha1.TransformBlock(buffer, 0, bytesRead, buffer, 0);
sha256.TransformBlock(buffer, 0, bytesRead, buffer, 0);
}
// We have to call TransformFinalBlock, but we don't have any
// more data - just provide 0 bytes.
md5.TransformFinalBlock(buffer, 0, 0);
sha1.TransformFinalBlock(buffer, 0, 0);
sha256.TransformFinalBlock(buffer, 0, 0);
md5Hash = md5.Hash;
sha1Hash = sha1.Hash;
sha256Hash = sha256.Hash;
}
}
public static string Hash(byte[] data)
{
using (var md5 = MD5Cng.Create())
{
return(BitConverter.ToString(md5.ComputeHash(data)).Replace("-", string.Empty));
}
}
//============================================================
// STATIC METHODS
//============================================================
#region GenerateHash(Stream stream, YahooMediaHashAlgorithm algorithm)
/// <summary>
/// Computes the hash value for the supplied <see cref="Stream"/> using the specified <see cref="YahooMediaHashAlgorithm"/>.
/// </summary>
/// <param name="stream">The input to compute the hash code for.</param>
/// <param name="algorithm">A <see cref="YahooMediaHashAlgorithm"/> enumeration value that indicates the algorithm to use.</param>
/// <returns>The <b>base64</b> encoded result of the computed hash code.</returns>
/// <exception cref="ArgumentNullException">The <paramref name="stream"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentException">The <paramref name="algorithm"/> is equal to <see cref="YahooMediaHashAlgorithm.None"/>.</exception>
public static string GenerateHash(Stream stream, YahooMediaHashAlgorithm algorithm)
{
//------------------------------------------------------------
// Local members
//------------------------------------------------------------
string base64EncodedHash = String.Empty;
MD5 md5 = MD5Cng.Create();
SHA1 sha1 = SHA1Cng.Create();
//------------------------------------------------------------
// Validate parameters
//------------------------------------------------------------
Guard.ArgumentNotNull(stream, "stream");
if (algorithm == YahooMediaHashAlgorithm.None)
{
throw new ArgumentException(String.Format(null, "Unable to generate a hash value for the {0} algorithm.", algorithm), "algorithm");
}
if (algorithm == YahooMediaHashAlgorithm.MD5)
{
byte[] hash = md5.ComputeHash(stream);
base64EncodedHash = Convert.ToBase64String(hash);
}
else if (algorithm == YahooMediaHashAlgorithm.Sha1)
{
byte[] hash = sha1.ComputeHash(stream);
base64EncodedHash = Convert.ToBase64String(hash);
}
return(base64EncodedHash);
}
/// <summary>
/// CheckSum128 method implementation
/// </summary>
public static byte[] CheckSum128(byte[] value)
{
byte[] hash = null;
using (MD5 md5 = MD5Cng.Create())
{
hash = md5.ComputeHash(value);
}
return(hash);
}
public static string MD5Hash(string str)
{
using (var md5 = MD5Cng.Create())
{
var result = md5.ComputeHash(Encoding.ASCII.GetBytes(str));
var strResult = BitConverter.ToString(result);
return(strResult.Replace("-", ""));
}
}
internal static string Compute(string str)
{
byte[] byteArr;
string HashStr = "";
byteArr = Encoding.ASCII.GetBytes(str);
var md5Hash = MD5Cng.Create().ComputeHash(byteArr);
HashStr = BitConverter.ToString(md5Hash).Replace("-", String.Empty).ToLower();
return(HashStr);
}
public string Compute(string input)
{
var bytes = Encoding.UTF8.GetBytes(input);
var secureGuid = String.Empty;
using (var sha = MD5Cng.Create())
{
var hash = sha.ComputeHash(bytes);
var guid = new Guid(hash);
secureGuid = guid.ToString();
}
return(secureGuid);
}
/// <summary>
/// 计算文件的 MD5 值
/// </summary>
/// <param name="path">要计算 MD5 值的文件名和路径</param>
/// <returns>MD5 值16进制字符串</returns>
public static string GetFileMD5(string path)
{
if (System.IO.File.Exists(path) == false)
{
return(string.Empty);
}
FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);
MD5 md5 = MD5Cng.Create();
byte[] hashByts = md5.ComputeHash(fs);
return(ConvertHashBytes(hashByts));
}
/// <summary>
/// 计算MD5Cng哈希值
/// </summary>
/// <param name="input">输入</param>
/// <returns>结果</returns>
public static string HashMD5Cng(string input, Encoding encoding = null)
{
encoding = encoding ?? AgileEncoding.Default;
var md5Hash = MD5Cng.Create();
byte[] datas = md5Hash.ComputeHash(encoding.GetBytes(input));
var ret = new StringBuilder();
for (var i = 0; i < datas.Length; i++)
{
ret.Append(datas[i].ToString("X2"));
}
return(ret.ToString());
}
/// <summary>
/// 利用MD5进行加密
/// </summary>
/// <param name="astr_Value"></param>
/// <returns></returns>
public static string EncryptMD5(string astr_Value)
{
string cl1 = astr_Value;
string pwd = "";
MD5 md5 = MD5Cng.Create();
// 加密后是一个字节类型的数组
byte[] s = md5.ComputeHash(Encoding.Unicode.GetBytes(cl1));
// 通过使用循环，将字节类型的数组转换为字符串，此字符串是常规字符格式化所得
for (int i = 0; i < s.Length; i++)
{
// 将得到的字符串使用十六进制类型格式。格式后的字符是小写的字母，如果使用大写（X）则格式后的字符是大写字符
pwd = pwd + s[i].ToString("x");
}
return(pwd);
}
public static Hashes CalculateHash(string filePath)
{
Hashes res = new Hashes()
{
sha1 = null, md5 = null
};
try
{
/*
* using(var sha1 = SHA1.Create())
* using (var md5 = MD5.Create())
* using (var stream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
* {
* md5.
* hash = BitConverter.ToString(md5.ComputeHash(stream)).Replace("-", string.Empty);
* }*/
using (var md5 = MD5Cng.Create()) // Or MD5Cng.Create
using (var sha1 = SHA1Cng.Create()) // Or SHA1Cng.Create
using (var input = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
byte[] buffer = new byte[8192];
int bytesRead;
while ((bytesRead = input.Read(buffer, 0, buffer.Length)) > 0)
{
md5.TransformBlock(buffer, 0, bytesRead, buffer, 0);
sha1.TransformBlock(buffer, 0, bytesRead, buffer, 0);
}
// We have to call TransformFinalBlock, but we don't have any
// more data - just provide 0 bytes.
md5.TransformFinalBlock(buffer, 0, 0);
sha1.TransformFinalBlock(buffer, 0, 0);
res.md5 = BitConverter.ToString(md5.Hash).Replace("-", string.Empty);
res.sha1 = BitConverter.ToString(sha1.Hash).Replace("-", string.Empty);
}
}
catch (Exception e)
{
// This should never happen at this time, but we don't want to stuck the process if it happens.
}
return(res);
}
internal static string Compute(FileStream streem)
{
byte[] byteArr = new byte[streem.Length];
//List<byte> byteList = new List<byte>();
string HashStr = "";
/*int i = 0;
* foreach (char temp in str.ToCharArray())
* {
* byteList.Add((byte)temp);
* i++;
* }
* i = 0;*/
streem.Read(byteArr, 0, (int)streem.Length);
//byteArr = byteList.ToArray();
var md5Hash = MD5Cng.Create().ComputeHash(byteArr);
HashStr = BitConverter.ToString(md5Hash).Replace("-", String.Empty).ToLower();
return(HashStr);
}
/// <summary>
/// Generates a unique subscription ID that can be passed to <see cref="LiveCaptureSubscription()"/>
/// </summary>
/// <returns>The generated ID.</returns>
/// <param name="connectionIndex">Client origin.</param>
/// <param name="equpimentType">Equipment type.</param>
/// <param name="equipmentIndex">Equipment index to observe.</param>
public static ulong GenerateSubscriptionID(int connectionIndex, SensorType equpimentType, int equipmentIndex)
{
// concat arguments to input array
byte[] bConnection = BitConverter.GetBytes(connectionIndex);
byte[] bSensor = BitConverter.GetBytes((int)equpimentType);
byte[] bIndex = BitConverter.GetBytes(equipmentIndex);
byte[] input = new byte[bConnection.Length + bSensor.Length + bIndex.Length];
int offset = 0;
Array.Copy(bConnection, 0, input, offset, bConnection.Length);
offset += bConnection.Length;
Array.Copy(bSensor, 0, input, offset, bSensor.Length);
offset += bSensor.Length;
Array.Copy(bIndex, 0, input, offset, bIndex.Length);
// comptute some hash
byte[] hash;
using (MD5 md5 = MD5Cng.Create()) {
hash = md5.ComputeHash(input);
}
// reduce the hash to a shorter value
ulong checkSum = 0x0;
if (hash.Length < sizeof(ulong))
{
// fail safe
// generate something if the hash is somehow very short
for (int i = 0; i < hash.Length; i++)
{
checkSum |= ((ulong)hash[i] << (8 * i));
}
return(checkSum);
}
for (int i = 0; i + sizeof(ulong) <= hash.Length; i += sizeof(ulong))
{
checkSum ^= BitConverter.ToUInt64(hash, i);
}
return(checkSum);
}
private static void Main(string[] args)
{
string filePath = null;
if (args.Length == 1)
{
filePath = args[0];
}
if (!File.Exists(filePath))
{
Console.WriteLine("File doesn't exist:" + filePath);
return;
}
var sha1 = Utilities.SHA1Hash(filePath);
var sha256 = Utilities.SHA256Hash(filePath);
var md5 = Utilities.Hash(filePath, MD5Cng.Create());
Console.WriteLine($"SHA1: {sha1}");
Console.WriteLine($"SHA256: {sha256}");
Console.WriteLine($"MD5: {md5}");
}
private static string GetPreCode(string input)
{
Byte[] preCode = Encoding.UTF8.GetBytes(input);
using (MD5 coder = MD5Cng.Create())
{
coder.Initialize();
preCode = coder.ComputeHash(preCode);
}
StringBuilder sBuilder = new StringBuilder();
// Loop through each byte of the hashed data
// and format each one as a hexadecimal string.
for (int i = 0; i < preCode.Length; i++)
{
sBuilder.Append(preCode[i].ToString("x2"));
}
// Return the hexadecimal string.
return(sBuilder.ToString());
}
public string GetMD5Cng()
{
var hasher = MD5Cng.Create();
return(ComputeHash(hasher));
}
private void Run()
{
// Create x files of y mb files and write to their streams
var assFI = new FileInfo(new Uri(typeof(Program).Assembly.Location).LocalPath);
var shadowspawn = new FileInfo(Path.Combine(assFI.DirectoryName, "shadowspawn.exe"));
if (!shadowspawn.Exists)
{
Error($"[Shadowspawn] {shadowspawn.FullName} doesn't exists", -1);
}
Section("Clean up");
RecreateDirs(ShadowBackupDI, DirectBackupDI, DataDI);
// Setup the files
Section("Creating files");
for (int i = 0; i < Count; i++)
{
var fi = GetFile(DataDI, SizeMB, i);
fi.Directory.Create();
// Using the file flag no buffering and write through seems to fool shadowspawn
FileOptions FileFlagNoBuffering = (FileOptions)0x20000000;
var stream = new FileStream(fi.FullName, FileMode.Create, FileAccess.ReadWrite, FileShare.Read, 8, FileOptions.WriteThrough | FileFlagNoBuffering);
fi.Refresh();
Info($"[{i}] Creating: {fi.FullName}");
Trace($"[{i}] LastWrite: {fi.LastWriteTime}");
stream.SetLength(SizeBytes);
m_streams[i] = stream;
}
var blockCount = SizeMB * Count;
Section($"Writing blocks 0 -> {blockCount}");
using (var md5 = MD5Cng.Create())
{
for (int i = 0; i < blockCount; i++)
{
if (s_cancelSrc.IsCancellationRequested)
{
break;
}
s_indent = 0;
Section($"Loop#{i}");
s_indent++;
rnd.NextBytes(m_buffer);
var dataHash = Convert.ToBase64String(md5.ComputeHash(m_buffer));
Trace($"[Memory] Hash: {dataHash}");
// Update the block information
m_helper.Update(i);
WriteStream();
// Read the hash to make sure properly written
ReadFile(DataDI);
var writtenHash = Convert.ToBase64String(md5.ComputeHash(m_buffer));
Trace($"[DataDI] Hash: {dataHash}");
if (!string.Equals(dataHash, writtenHash))
{
Error($"[Write], hash mismatch: {dataHash} != {writtenHash}", -11);
}
//// Plain copy
//DirectCopy();
//ReadFile(DirectBackupDI);
//var directHash = Convert.ToBase64String(md5.ComputeHash(m_buffer));
//Trace($"[DirectCopy] Hash: {directHash}");
//if (!string.Equals(dataHash, directHash))
//{
// Error($"[DirectCopy], hash mismatch: {dataHash} != {directHash}", -12);
//}
// Shadow Copy
MakeShadowCopy(shadowspawn);
// Now read the block from backup
ReadFile(ShadowBackupDI);
var shadowHash = Convert.ToBase64String(md5.ComputeHash(m_buffer));
Trace($"[ShadowCopy] Hash: {shadowHash}");
if (!string.Equals(dataHash, shadowHash))
{
Error($"[ShadowCopy], hash mismatch: {dataHash} != {shadowHash}", -13);
}
}
}
}
/// <summary>ハッシュ（キー無し）サービスプロバイダの生成</summary>
/// <param name="eha">ハッシュ（キー無し）サービスプロバイダの列挙型</param>
/// <returns>ハッシュ（キー無し）サービスプロバイダ</returns>
/// <remarks>
/// EnumHashAlgorithmから、HashAlgorithmを生成するために追加。
/// HashAlgorithm.Create(HashNameConst.SHA256) は .NET Core 2 で動作せず。
/// - KeyedHashAlgorithm.Create("HMACSHA1") throw PNSE (on .NET Core 2
/// https://github.com/dotnet/standard/issues/530#issuecomment-375043416
/// </remarks>
public static HashAlgorithm CreateHashAlgorithmSP(EnumHashAlgorithm eha)
{
// ハッシュ（キー無し）サービスプロバイダ
HashAlgorithm ha = null;
if (eha == EnumHashAlgorithm.Default)
{
// 既定の暗号化サービスプロバイダ
ha = HashAlgorithmCmnFunc.GetHashAlgorithmFromNameString(); // devps(1703)
}
#region MD5
else if (eha == EnumHashAlgorithm.MD5_CSP)
{
// MD5CryptoServiceProviderサービスプロバイダ
ha = MD5CryptoServiceProvider.Create(); // devps(1703)
}
#if NETSTD
#else
else if (eha == EnumHashAlgorithm.MD5_CNG)
{
// MD5Cngサービスプロバイダ
ha = MD5Cng.Create(); // devps(1703)
}
#endif
#endregion
#region RIPEMD160
else if (eha == EnumHashAlgorithm.RIPEMD160_M)
{
#if NETSTD
ha = null; // BouncyCastleを使用する。
#else
// RIPEMD160Managedサービスプロバイダ
ha = RIPEMD160Managed.Create(); // devps(1703)
#endif
}
#endregion
#region SHA1
else if (eha == EnumHashAlgorithm.SHA1_CSP)
{
// SHA1CryptoServiceProviderサービスプロバイダ
ha = SHA1CryptoServiceProvider.Create(); // devps(1703)
}
#if NETSTD
#else
else if (eha == EnumHashAlgorithm.SHA1_CNG)
{
// SHA1Cngサービスプロバイダ
ha = SHA1Cng.Create(); // devps(1703)
}
#endif
else if (eha == EnumHashAlgorithm.SHA1_M)
{
// SHA1Managedサービスプロバイダ
ha = SHA1Managed.Create(); // devps(1703)
}
#endregion
#region SHA256
else if (eha == EnumHashAlgorithm.SHA256_CSP)
{
// SHA256CryptoServiceProviderサービスプロバイダ
ha = SHA256CryptoServiceProvider.Create(); // devps(1703)
}
#if NETSTD
#else
else if (eha == EnumHashAlgorithm.SHA256_CNG)
{
// SHA256Cngサービスプロバイダ
ha = SHA256Cng.Create(); // devps(1703)
}
#endif
else if (eha == EnumHashAlgorithm.SHA256_M)
{
// SHA256Managedサービスプロバイダ
ha = SHA256Managed.Create(); // devps(1703)
}
#endregion
#region SHA384
else if (eha == EnumHashAlgorithm.SHA384_CSP)
{
// SHA384CryptoServiceProviderサービスプロバイダ
ha = SHA384CryptoServiceProvider.Create(); // devps(1703)
}
#if NETSTD
#else
else if (eha == EnumHashAlgorithm.SHA384_CNG)
{
// SHA384Cngサービスプロバイダ
ha = SHA384Cng.Create(); // devps(1703)
}
#endif
else if (eha == EnumHashAlgorithm.SHA384_M)
{
// SHA384Managedサービスプロバイダ
ha = SHA384Managed.Create(); // devps(1703)
}
#endregion
#region SHA512
else if (eha == EnumHashAlgorithm.SHA512_CSP)
{
// SHA512CryptoServiceProviderサービスプロバイダ
ha = SHA512CryptoServiceProvider.Create(); // devps(1703)
}
#if NETSTD
#else
else if (eha == EnumHashAlgorithm.SHA512_CNG)
{
// SHA512Cngサービスプロバイダ
ha = SHA512Cng.Create(); // devps(1703)
}
#endif
else if (eha == EnumHashAlgorithm.SHA512_M)
{
// SHA512Managedサービスプロバイダ
ha = SHA512Managed.Create(); // devps(1703)
}
#endregion
else
{
// 既定の暗号化サービスプロバイダ
ha = HashAlgorithmCmnFunc.GetHashAlgorithmFromNameString(); // devps(1703)
}
return(ha);
}
// ReSharper disable AccessToStaticMemberViaDerivedType
private void setHashAlgorithm()
{
switch (cbAlgo.SelectedIndex)
{
case 0:
switch (cbOption.SelectedIndex)
{
case 0: _ha = SHA256.Create();
break;
case 1: _ha = SHA256Cng.Create();
break;
case 2: _ha = HMACSHA256.Create();
break;
}
break;
case 1:
switch (cbOption.SelectedIndex)
{
case 0: _ha = SHA512.Create();
break;
case 1: _ha = SHA512Cng.Create();
break;
case 2: _ha = HMACSHA512.Create();
break;
}
break;
case 2:
switch (cbOption.SelectedIndex)
{
case 0: _ha = SHA1.Create();
break;
case 1: _ha = SHA1Cng.Create();
break;
case 2: _ha = HMACSHA1.Create();
break;
}
break;
case 3:
switch (cbOption.SelectedIndex)
{
case 0: _ha = MD5.Create();
break;
case 1: _ha = MD5Cng.Create();
break;
case 2: _ha = HMACMD5.Create();
break;
}
break;
case 4:
//stays null for Modbus-CRC16
break;
case 5:
_ha = new Crc32();
break;
}
}