/// <summary>
/// Create Sha512 hash of data
/// </summary>
/// <param name="data">Data to hash</param>
/// <param name="key">Aes key</param>
/// <returns>Hash</returns>
public static byte[] HmacSha(byte[] data, byte[] key)
{
using (var sha512 = HMACSHA512.Create("HMACSHA512"))
{
sha512.Key = key;
return(sha512.ComputeHash(data));
}
}
private void ComputeHash(string path)
{
using (var fileStream = File.OpenRead(path))
{
using (var hasher = HMACSHA512.Create())
{
_result = hasher.ComputeHash(fileStream);
}
}
}
public static byte[] ComputeHash(byte[] input, byte[] key, string algorithm)
{
if (input == null || input.Length == 0)
{
throw new ArgumentException();
}
if (key == null || key.Length == 0)
{
throw new ArgumentException();
}
System.Security.Cryptography.KeyedHashAlgorithm hash;
switch (algorithm.ToUpperInvariant())
{
case "MD5":
case "HMACMD5":
hash = HMACMD5.Create();
break;
case "MD160":
case "RIPEMD160":
case "HMACRIPEMD160":
hash = HMACRIPEMD160.Create();
break;
case "SHA":
case "SHA1":
case "HMACSHA":
case "HMACSHA1":
hash = HMACSHA1.Create();
break;
case "SHA256":
case "HMACSHA256":
hash = HMACSHA256.Create();
break;
case "SHA384":
case "HMACSHA384":
hash = HMACSHA384.Create();
break;
case "SHA512":
case "HMACSHA512":
hash = HMACSHA512.Create();
break;
default:
throw new NotSupportedException();
}
hash.Key = key;
byte[] result = hash.ComputeHash(input);
hash.Clear();
return(result);
}
// public static string GetHash512(string password)
public static string GetHash512(string password, string salt)
{
// byte[] passwordByte = ASCIIEncoding.ASCII.GetBytes(password);
byte[] passwordByte = ASCIIEncoding.ASCII.GetBytes(password + salt + "SM");
//HashAlgorithm algorithm = new HMACSHA512();
HashAlgorithm algorithm = HMACSHA512.Create();
Byte[] hashPassword = algorithm.ComputeHash(passwordByte);
return Convert.ToBase64String(hashPassword);
}
/// <summary>
/// HMAC加密，用于密码非可逆加密
/// </summary>
/// <param name="str">字符串参数</param>
/// <returns>返回字符串值</returns>
public static byte[] HMAC(string str)
{
if (string.IsNullOrEmpty(str))
{
return(null);
}
HMAC hmac = HMACSHA512.Create();
hmac.Key = Encoding.Default.GetBytes(key);
return(hmac.ComputeHash(Encoding.Default.GetBytes(str)));
}
private static HashAlgorithm getHasher(string key)
{
if (key == null)
{
return(HMACSHA512.Create());
}
else
{
byte[] keyBytes = Encoding.ASCII.GetBytes(key);
return(new HMACSHA512(keyBytes));
}
}
private static byte[] GetHash([CanBeNull] string input, EHashType hash)
{
var inputBytes = Encoding.ASCII.GetBytes(input);
switch (hash)
{
case EHashType.HMAC:
return(HMAC.Create().ComputeHash(inputBytes));
#pragma warning disable RECS0030 // Suggests using the class declaring a static function when calling it
case EHashType.HMACMD5: // DevSkim: ignore DS126858
return(HMACMD5.Create().ComputeHash(inputBytes)); // DevSkim: ignore DS126858
case EHashType.HMACSHA1: // DevSkim: ignore DS126858
return(HMACSHA1.Create().ComputeHash(inputBytes)); // DevSkim: ignore DS126858
case EHashType.HMACSHA256:
return(HMACSHA256.Create().ComputeHash(inputBytes));
case EHashType.HMACSHA384:
return(HMACSHA384.Create().ComputeHash(inputBytes));
case EHashType.HMACSHA512:
return(HMACSHA512.Create().ComputeHash(inputBytes));
#pragma warning restore RECS0030 // Suggests using the class declaring a static function when calling it
case EHashType.MD5: // DevSkim: ignore DS126858
#pragma warning disable SG0006 // Weak hashing function
return(MD5.Create().ComputeHash(inputBytes)); // DevSkim: ignore DS126858
#pragma warning restore SG0006 // Weak hashing function
case EHashType.SHA1: // DevSkim: ignore DS126858
#pragma warning disable SG0006 // Weak hashing function
return(SHA1.Create().ComputeHash(inputBytes)); // DevSkim: ignore DS126858
#pragma warning restore SG0006 // Weak hashing function
case EHashType.SHA256:
return(SHA256.Create().ComputeHash(inputBytes));
case EHashType.SHA384:
return(SHA384.Create().ComputeHash(inputBytes));
case EHashType.SHA512:
return(SHA512.Create().ComputeHash(inputBytes));
default:
return(inputBytes);
}
}
private async Task <byte[]> ComputeHashAsync(string path)
{
using (var fileStream = File.OpenRead(path))
{
using (var hasher = HMACSHA512.Create())
{
return(await Task.Run(() =>
{
return hasher.ComputeHash(fileStream);
}));
}
}
}
/// <summary>
/// Returns a hashed password + salt, to be used in generating a token.
/// </summary>
/// <param name="password">string - user's password</param>
/// <returns>string - hashed password</returns>
public static string GetHashedPassword(string password)
{
string key = string.Join(":", new string[] { password, _salt });
using (HMAC hmac = HMACSHA512.Create(_alg))
{
// Hash the key.
hmac.Key = Encoding.UTF8.GetBytes(_salt);
hmac.ComputeHash(Encoding.UTF8.GetBytes(key));
return(Convert.ToBase64String(hmac.Hash));
}
}
private static byte[] GetHash(string Source, HashType hash)
{
byte[] inputBytes = Encoding.ASCII.GetBytes(Source);
switch (hash)
{
case HashType.HMAC:
return(HMAC.Create().ComputeHash(inputBytes));
case HashType.HMACMD5:
return(HMACMD5.Create().ComputeHash(inputBytes));
case HashType.HMACSHA1:
return(HMACSHA1.Create().ComputeHash(inputBytes));
case HashType.HMACSHA256:
return(HMACSHA256.Create().ComputeHash(inputBytes));
case HashType.HMACSHA384:
return(HMACSHA384.Create().ComputeHash(inputBytes));
case HashType.HMACSHA512:
return(HMACSHA512.Create().ComputeHash(inputBytes));
/*
* case HashType.MACTripleDES:
* return MACTripleDES.Create().ComputeHash(inputBytes);
*/
case HashType.MD5:
return(MD5.Create().ComputeHash(inputBytes));
/*
* case HashType.RIPEMD160:
* return RIPEMD160.Create().ComputeHash(inputBytes);
*/
case HashType.SHA1:
return(SHA1.Create().ComputeHash(inputBytes));
case HashType.SHA256:
return(SHA256.Create().ComputeHash(inputBytes));
case HashType.SHA384:
return(SHA384.Create().ComputeHash(inputBytes));
case HashType.SHA512:
return(SHA512.Create().ComputeHash(inputBytes));
default:
return(inputBytes);
}
}
private static byte[] GetHash(string input, EHashType hash)
{
var inputBytes = Encoding.ASCII.GetBytes(input);
switch (hash)
{
case EHashType.HMAC:
return(HMAC.Create().ComputeHash(inputBytes));
case EHashType.HMACMD5:
return(HMACMD5.Create().ComputeHash(inputBytes));
case EHashType.HMACSHA1:
return(HMACSHA1.Create().ComputeHash(inputBytes));
case EHashType.HMACSHA256:
return(HMACSHA256.Create().ComputeHash(inputBytes));
case EHashType.HMACSHA384:
return(HMACSHA384.Create().ComputeHash(inputBytes));
case EHashType.HMACSHA512:
return(HMACSHA512.Create().ComputeHash(inputBytes));
case EHashType.MACTripleDES:
return(MACTripleDES.Create().ComputeHash(inputBytes));
case EHashType.MD5:
return(MD5.Create().ComputeHash(inputBytes));
case EHashType.RIPEMD160:
return(RIPEMD160.Create().ComputeHash(inputBytes));
case EHashType.SHA1:
return(SHA1.Create().ComputeHash(inputBytes));
case EHashType.SHA256:
return(SHA256.Create().ComputeHash(inputBytes));
case EHashType.SHA384:
return(SHA384.Create().ComputeHash(inputBytes));
case EHashType.SHA512:
return(SHA512.Create().ComputeHash(inputBytes));
default:
return(inputBytes);
}
}
/// <summary>
/// Generates a token to be used in API calls.
/// The token is generated by hashing a message with a key, using HMAC SHA256.
/// The message is: username:ip:userAgent:timeStamp
/// The key is: password:ip:salt
/// The resulting token is then concatenated with username:timeStamp and the result base64 encoded.
///
/// API calls may then be validated by:
/// 1. Base64 decode the string, obtaining the token, username, and timeStamp.
/// 2. Ensure the timestamp is not expired.
/// 2. Lookup the user's password from the db (cached).
/// 3. Hash the username:ip:userAgent:timeStamp with the key of password:salt to compute a token.
/// 4. Compare the computed token with the one supplied and ensure they match.
/// </summary>
/// TODO: add custom route
public static string GenerateToken(string username, string password, string ip, string userAgent, long ticks)
{
string hash = string.Join(":", new string[] { username, ip, userAgent, ticks.ToString() });
string hashLeft = "";
string hashRight = "";
using (HMAC hmac = HMACSHA512.Create(_alg))
{
hmac.Key = Encoding.UTF8.GetBytes(password); // Already hashed in db !! => Encoding.UTF8.GetBytes(GetHashedPassword(password));
hmac.ComputeHash(Encoding.UTF8.GetBytes(hash));
hashLeft = Convert.ToBase64String(hmac.Hash);
hashRight = string.Join(":", new string[] { username, ticks.ToString() });
}
return(Convert.ToBase64String(Encoding.UTF8.GetBytes(string.Join(":", hashLeft, hashRight))));
}
private static byte[] GetHash(string input, EHashType hash)
{
byte[] inputBytes = Encoding.ASCII.GetBytes(input);
switch (hash)
{
case EHashType.HMAC:
return(HMAC.Create().ComputeHash(inputBytes));
case EHashType.HMACMD5:
return(HMACMD5.Create().ComputeHash(inputBytes));
case EHashType.HMACSHA1:
return(HMACSHA1.Create().ComputeHash(inputBytes));
case EHashType.HMACSHA256:
return(HMACSHA256.Create().ComputeHash(inputBytes));
case EHashType.HMACSHA384:
return(HMACSHA384.Create().ComputeHash(inputBytes));
case EHashType.HMACSHA512:
return(HMACSHA512.Create().ComputeHash(inputBytes));
#pragma warning disable CS0618 // Type or member is obsolete
case EHashType.MD5:
#pragma warning restore CS0618 // Type or member is obsolete
return(MD5.Create().ComputeHash(inputBytes));
#pragma warning disable CS0618 // Type or member is obsolete
case EHashType.SHA1:
#pragma warning restore CS0618 // Type or member is obsolete
return(SHA1.Create().ComputeHash(inputBytes));
case EHashType.SHA256:
return(SHA256.Create().ComputeHash(inputBytes));
case EHashType.SHA384:
return(SHA384.Create().ComputeHash(inputBytes));
case EHashType.SHA512:
return(SHA512.Create().ComputeHash(inputBytes));
default:
return(inputBytes);
}
}
internal static string HashFile(string filePath, HashType algo)
{
switch (algo)
{
case HashType.MD5:
return(MakeHashString(MD5.Create().ComputeHash(new FileStream(filePath, FileMode.Open))));
case HashType.SHA1:
return(MakeHashString(SHA1.Create().ComputeHash(new FileStream(filePath, FileMode.Open))));
case HashType.SHA512:
return(MakeHashString(HMACSHA512.Create().ComputeHash(new FileStream(filePath, FileMode.Open))));
default:
return("");
}
}
private static byte[] GetHash(string input, eHashType hash)
{
byte[] inputBytes = Encoding.ASCII.GetBytes(input);
switch (hash)
{
case eHashType.HMAC:
return(HMAC.Create().ComputeHash(inputBytes));
case eHashType.HMACMD5:
return(HMACMD5.Create().ComputeHash(inputBytes));
case eHashType.HMACSHA1:
return(HMACSHA1.Create().ComputeHash(inputBytes));
case eHashType.HMACSHA256:
return(HMACSHA256.Create().ComputeHash(inputBytes));
case eHashType.HMACSHA384:
return(HMACSHA384.Create().ComputeHash(inputBytes));
case eHashType.HMACSHA512:
return(HMACSHA512.Create().ComputeHash(inputBytes));
case eHashType.MD5:
return(MD5.Create().ComputeHash(inputBytes));
case eHashType.SHA1:
return(SHA1.Create().ComputeHash(inputBytes));
case eHashType.SHA256:
return(SHA256.Create().ComputeHash(inputBytes));
case eHashType.SHA384:
return(SHA384.Create().ComputeHash(inputBytes));
case eHashType.SHA512:
return(SHA512.Create().ComputeHash(inputBytes));
default:
return(inputBytes);
}
}
/// <summary>
/// 为指定的数据创建安全令牌
/// </summary>
/// <param name="key">动态密钥</param>
/// <param name="time">令牌创建时间</param>
/// <returns></returns>
public string Create(string key, DateTime time)
{
string masterKey = this.masterKey ?? ALConfig.DllConfigs["BIUtils"]["SecurityConfig"]["MasterKey"];
string inputStr = key + "|" + masterKey + "|" + time.ToString("yyyy-MM-dd HH:mm");
Encoding encoding = Encoding.GetEncoding((int)this.encryEncoding);
switch (this.encryMode)
{
case EncryMode.HMAC:
HMAC hmac = HMACSHA512.Create();
hmac.Key = encoding.GetBytes(ALEncrypt.key);
byte[] hmacData = hmac.ComputeHash(encoding.GetBytes(inputStr));
return(BitConverter.ToString(hmacData).Replace("-", ""));
case EncryMode.MD5:
MD5 md5 = new MD5CryptoServiceProvider();
byte[] md5Data = md5.ComputeHash(encoding.GetBytes(inputStr));
return(BitConverter.ToString(md5Data).Replace("-", ""));
default:
throw new ArgumentOutOfRangeException("encryMode");
}
}
// 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;
}
}