/// <summary>
/// Initializes a new instance of the <see cref="Hkdf"/> class.
/// </summary>
/// <param name="keyedHashAlgorithm">The class that will be used to perform key derivation.</param>
/// <param name="data">The additional input data.</param>
private Hkdf(KeyedHashAlgorithm keyedHashAlgorithm, byte[] data)
{
if (keyedHashAlgorithm.IsNull())
{
throw new ArgumentNullException(paramName: nameof(keyedHashAlgorithm));
}
m_data = (data ?? CompatibilityUtils.Array.Empty <byte>());
m_keyedHashAlgorithm = keyedHashAlgorithm;
m_maxKeyLength = (byte.MaxValue * (keyedHashAlgorithm.HashSize >> 3));
}
/// <summary>
/// Initializes a new instance of the <see cref="Pbkdf2"/> class.
/// </summary>
/// <param name="keyedHashAlgorithm">The class that will be used to perform key derivation.</param>
/// <param name="salt">The salt that will be combined with the passord during key derivation.</param>
/// <param name="iterationCount">The number of iterations that will be performed to derive a new key.</param>
private Pbkdf2(KeyedHashAlgorithm keyedHashAlgorithm, ReadOnlySpan <byte> salt, uint iterationCount)
{
if (keyedHashAlgorithm.IsNull())
{
throw new ArgumentNullException(paramName: nameof(keyedHashAlgorithm));
}
m_iterationCount = iterationCount;
m_keyedHashAlgorithm = keyedHashAlgorithm;
m_salt = salt.ToArray();
}