public static IBuzHash Create(BuzHashTypes type, BuzHashConfig config)
{
config.CheckNull(nameof(config));
config = config.Clone();
config.HashSizeInBits = (int)type;
return(new BuzHashFunction(config));
}
public BuzHashFunction(BuzHashConfig config)
{
if (config is null)
{
throw new ArgumentNullException(nameof(config));
}
_config = config.Clone();
if (_config.Rtab == null || _config.Rtab.Count != 256)
{
throw new ArgumentException($"{nameof(config.Rtab)} must be non-null list of 256 {nameof(UInt64)} values.", $"{nameof(config)}.{nameof(config.Rtab)}");
}
if (!_validHashSizes.Contains(_config.HashSizeInBits))
{
throw new ArgumentOutOfRangeException($"{nameof(config)}.{nameof(config.HashSizeInBits)}", _config.HashSizeInBits, $"{nameof(config)}.{nameof(config.HashSizeInBits)} must be contained within BuzHashBase.ValidHashSizes.");
}
if (_config.ShiftDirection != CircularShiftDirection.Left && _config.ShiftDirection != CircularShiftDirection.Right)
{
throw new ArgumentOutOfRangeException($"{nameof(config)}.{nameof(config.ShiftDirection)}", _config.ShiftDirection, $"{nameof(config)}.{nameof(config.ShiftDirection)} must be a valid {nameof(CircularShiftDirection)} value.");
}
}