public HMACChiko2(byte[] rgbKey)
{
HashSizeValue = 512;
// Create the hash algorithms.
hash1 = Sha3.Sha3512();
hash2 = Sha3.Sha3512();
// Get the key.
if (rgbKey.Length > 128)
{
KeyValue = hash1.ComputeHash(rgbKey);
// No need to call Initialize; ComputeHash does it automatically.
}
else
{
KeyValue = (byte[])rgbKey.Clone();
}
// Compute rgbInner and rgbOuter.
int i = 0;
for (i = 0; i < 128; i++)
{
rgbInner[i] = 0x36;
rgbOuter[i] = 0x5C;
}
for (i = 0; i < KeyValue.Length; i++)
{
rgbInner[i] ^= KeyValue[i];
rgbOuter[i] ^= KeyValue[i];
}
}
public string CheckDigitalSignature(string hashToCheck, string plainText)
{
//string message = ConfigurationManager.AppSettings["Message"];
Sha3.ComputeHash(plainText);
//string hashedMessage = GetHash();
if (Sha3.Hash.Equals(hashToCheck))
{
return("Poruka je besprijekorna");
}
return("Poruka nema integriteta");
}
/// <summary>
/// Encrypting method using SHA-512 algorithm
/// </summary>
/// <param name="password">Password to encrypt</param>
/// <returns>Encrypted password</returns>
public String EncryptPassword(string password)
{
Sha3 sha512 = Sha3.Sha3512();
byte[] inputBytes = System.Text.Encoding.ASCII.GetBytes(password);
byte[] hashBytes = sha512.ComputeHash(inputBytes);
// Convert the byte array to hexadecimal string
StringBuilder sb = new StringBuilder();
for (int i = 0; i < hashBytes.Length; i++)
{
sb.Append(hashBytes[i].ToString("X2").ToLower());
}
return(sb.ToString());
}
public static string GetPasswordHash(string password)
{
if (password is null)
{
return(null);
}
using Sha3 sha3 = Sha3.Sha3512();
var hash = sha3.ComputeHash(Encoding.UTF8.GetBytes(password));
StringBuilder builder = new StringBuilder();
foreach (var b in hash)
{
builder.Append(b.ToString("x2"));
}
return(builder.ToString());
}
/// <summary>
/// Computes the hash value for the specified string
/// </summary>
/// <exception cref="System.ArgumentNullException"></exception>
/// <exception cref="System.ObjectDisposedException"></exception>
public static byte[] ComputeHash(this Sha3 hasher, string value)
{
return(hasher.ComputeHash(Encoding.UTF8.GetBytes(value)));
}
