public Pearson_Implementation(IPearsonConfig config)
{
if (config == null)
{
throw new ArgumentNullException(nameof(config));
}
_config = config.Clone();
if (_config.Table == null)
{
throw new ArgumentException($"{nameof(config)}.{nameof(config.Table)} must be non-null.", $"{nameof(config)}.{nameof(config.Table)}");
}
if (_config.Table.Count != 256 || _config.Table.Distinct().Count() != 256)
{
throw new ArgumentException($"{nameof(config)}.{nameof(config.Table)} must be a permutation of [0, 255].", $"{nameof(config)}.{nameof(config.Table)}");
}
if (_config.HashSizeInBits <= 0 || _config.HashSizeInBits % 8 != 0)
{
throw new ArgumentOutOfRangeException($"{nameof(config)}.{nameof(config.HashSizeInBits)}", _config.HashSizeInBits, $"{nameof(config)}.{nameof(config.HashSizeInBits)} must be a positive integer that is divisible by 8.");
}
}
public BlockTransformer(IPearsonConfig config)
: this()
{
_table = config.Table;
_anyBytesProcessed = false;
_hashValue = new byte[config.HashSizeInBits / 8];
}
/// <summary>
/// Creates a new <see cref="IPearson"/> instance with the specified configuration.
/// </summary>
/// <param name="config">Configuration to use when constructing the instance.</param>
/// <returns>A <see cref="IPearson"/> instance.</returns>
public IPearson Create(IPearsonConfig config)
{
if (config == null)
{
throw new ArgumentNullException(nameof(config));
}
return(new Pearson_Implementation(config));
}