protected Fnv1Base(FnvConfig config)
{
if (config is null)
{
throw new ArgumentNullException(nameof(config));
}
_config = config.Clone();
if (_config.HashSizeInBits <= 0 || _config.HashSizeInBits % 32 != 0)
{
throw new ArgumentOutOfRangeException($"{nameof(config)}.{nameof(config.HashSizeInBits)}", _config.HashSizeInBits, $"{nameof(config)}.{nameof(config.HashSizeInBits)} must be a positive a multiple of 32.");
}
if (_config.Prime <= BigInteger.Zero)
{
throw new ArgumentOutOfRangeException($"{nameof(config)}.{nameof(config.Prime)}", _config.Prime, $"{nameof(config)}.{nameof(config.Prime)} must be greater than zero.");
}
if (_config.Offset <= BigInteger.Zero)
{
throw new ArgumentOutOfRangeException($"{nameof(config)}.{nameof(config.Offset)}", _config.Offset, $"{nameof(config)}.{nameof(config.Offset)} must be greater than zero.");
}
_fnvPrimeOffset = FnvPrimeOffset.Create(_config.HashSizeInBits, _config.Prime, _config.Offset);
}
public BlockTransformer_ExtendedBase(FnvPrimeOffset fnvPrimeOffset) : this()
{
_prime = fnvPrimeOffset.Prime.ToArray();
_hashValue = fnvPrimeOffset.Offset.ToArray();
_hashSizeInBytes = _hashValue.Length * 4;
}
public BlockTransformer_64BitBase(FnvPrimeOffset fnvPrimeOffset) : this()
{
_prime = ((UInt64)fnvPrimeOffset.Prime[1] << 32) | fnvPrimeOffset.Prime[0];
_hashValue = ((UInt64)fnvPrimeOffset.Offset[1] << 32) | fnvPrimeOffset.Offset[0];
}
public BlockTransformer_32BitBase(FnvPrimeOffset fnvPrimeOffset) : this()
{
_prime = fnvPrimeOffset.Prime[0];
_hashValue = fnvPrimeOffset.Offset[0];
}