/// <summary>
/// Calculates the hash for fixed length data with a prefixed salt value.
/// </summary>
/// <exception cref="T:System.ArgumentNullException">data or salt is null.</exception>
/// <remarks>A "salt" value is random data prefixed to every hashed value to prevent common dictionary attacks.</remarks>
public Data Calculate(Data data, Data salt)
{
if (data == null) throw new ArgumentNullException("data");
if (salt == null) throw new ArgumentNullException("salt");
var value = new byte[data.Bytes.Length + salt.Bytes.Length];
salt.Bytes.CopyTo(value, 0);
data.Bytes.CopyTo(value, salt.Bytes.Length);
return CalculatePrivate(value);
}
private Data DoSaltedHash(HashProvider p, Data salt)
{
using (var h = new Hash(p))
{
return h.Calculate(new Data(_targetString), salt);
}
}
/// <summary>
/// Calculates the hash for fixed length data.
/// </summary>
/// <exception cref="T:System.ArgumentNullException">data is null.</exception>
public Data Calculate(Data data)
{
if (data == null) throw new ArgumentNullException("data");
return CalculatePrivate(data.Bytes);
}
