private static string GetSha384Hash(string text)
{
using (var sha = new System.Security.Cryptography.SHA384Managed())
{
return(Convert.ToBase64String(sha.ComputeHash(System.Text.Encoding.UTF8.GetBytes(text))));
}
}
/// <summary>
/// Make hashed password with Salt and hard coded block for improving security
/// </summary>
/// <param name="shelter"></param>
/// <param name="Salted"></param>
/// <returns></returns>
public static string GetHash(System.Security.SecureString inputpassword, string Salted)
{
IntPtr unsafePtr = IntPtr.Zero;
byte[] MergedArray = null;
try
{
unsafePtr = System.Runtime.InteropServices.Marshal.SecureStringToGlobalAllocAnsi(inputpassword);
byte[] myByteArray = new byte[inputpassword.Length];
System.Runtime.InteropServices.Marshal.Copy(unsafePtr, myByteArray, 0, inputpassword.Length);
byte[] saltbuf = System.Text.Encoding.ASCII.GetBytes(Salted);
byte[] hardcode = System.Text.Encoding.ASCII.GetBytes("U-m63W4HP2QCOz+u7UL9awx01Zg=");
MergedArray = new byte[saltbuf.Length + myByteArray.Length + hardcode.Length];
System.Buffer.BlockCopy(saltbuf, 0, MergedArray, 0, saltbuf.Length);
System.Buffer.BlockCopy(myByteArray, 0, MergedArray, saltbuf.Length, myByteArray.Length);
System.Buffer.BlockCopy(hardcode, 0, MergedArray, saltbuf.Length + myByteArray.Length, hardcode.Length);
MergedArray = new System.Security.Cryptography.SHA384Managed().ComputeHash(MergedArray);
}
catch (Exception ex)
{
throw ex;
}
finally
{
System.Runtime.InteropServices.Marshal.ZeroFreeGlobalAllocAnsi(unsafePtr);
inputpassword.Dispose();
}
return(Convert.ToBase64String(MergedArray));
}
public string GetSHA384Hash(string pathName)
{
string strResult = "";
string strHashData = "";
byte[] arrbytHashValue;
System.IO.FileStream oFileStream = null;
System.Security.Cryptography.SHA384 oSHA384Hasher = new System.Security.Cryptography.SHA384Managed();
try
{
oFileStream = GetFileStream(pathName);
arrbytHashValue = oSHA384Hasher.ComputeHash(oFileStream);
oFileStream.Close();
strHashData = System.BitConverter.ToString(arrbytHashValue);
strHashData = strHashData.Replace("-", "");
strResult = strHashData;
}
catch (System.Exception ex)
{
System.Windows.Forms.MessageBox.Show(ex.Message, "Error!", System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Error, System.Windows.Forms.MessageBoxDefaultButton.Button1);
}
return(strResult);
}
/// <summary>
/// Generates hash equivalent for the plain text data
/// </summary>
/// <param name="inputText">Plain text input string</param>
/// <returns></returns>
public string ComputeHash(string inputText)
{
if (string.IsNullOrWhiteSpace(inputText))
{
throw new NullReferenceException("inputText should not be empty!");
}
byte[] _saltBytes;
if (string.IsNullOrWhiteSpace(saltValue))
{
saltValue = System.Web.Security.Membership.GeneratePassword(128, 64);
}
_saltBytes = Encoding.UTF8.GetBytes(saltValue);
byte[] _plainTextBytes = Encoding.UTF8.GetBytes(inputText);
byte[] _plainTextWithSaltBytes = new byte[_plainTextBytes.Length + _saltBytes.Length];
_plainTextBytes.CopyTo(_plainTextWithSaltBytes, 0);
_saltBytes.CopyTo(_plainTextWithSaltBytes, _plainTextBytes.Length);
System.Security.Cryptography.HashAlgorithm _hash;
switch (_hashAlgorithm)
{
case CustomHashAlgorithm.HashAlgorithm.SHA1:
_hash = new System.Security.Cryptography.SHA1Managed();
break;
case CustomHashAlgorithm.HashAlgorithm.SHA256:
_hash = new System.Security.Cryptography.SHA256Managed();
break;
case CustomHashAlgorithm.HashAlgorithm.SHA384:
_hash = new System.Security.Cryptography.SHA384Managed();
break;
default:
_hash = new System.Security.Cryptography.SHA512Managed();
break;
}
return Convert.ToBase64String(_hash.ComputeHash(_plainTextWithSaltBytes));
}
/// <summary>
/// SHA384加密，不可逆转
/// </summary>
/// <param name="str">string str:被加密的字符串</param>
/// <returns>返回加密后的字符串</returns>
private string SHA384Encrypt(string str)
{
System.Security.Cryptography.SHA384 s384 = new System.Security.Cryptography.SHA384Managed();
byte[] byte1;
byte1 = s384.ComputeHash(Encoding.Default.GetBytes(str));
s384.Clear();
return Convert.ToBase64String(byte1);
}
public string GetSHA384Hash(string pathName)
{
string strResult = "";
string strHashData = "";
byte[] arrbytHashValue;
System.IO.FileStream oFileStream = null;
System.Security.Cryptography.SHA384 oSHA384Hasher = new System.Security.Cryptography.SHA384Managed();
try
{
oFileStream = GetFileStream(pathName);
arrbytHashValue = oSHA384Hasher.ComputeHash(oFileStream);
oFileStream.Close();
strHashData = System.BitConverter.ToString(arrbytHashValue);
strHashData = strHashData.Replace("-", "");
strResult = strHashData;
}
catch (System.Exception ex)
{
System.Windows.Forms.MessageBox.Show(ex.Message, "Error!", System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Error, System.Windows.Forms.MessageBoxDefaultButton.Button1);
}
return (strResult);
}
