public Crc32(Crc32Type type, Endianness endianness)
{
_polynomial = GetPolynomialByType(type);
if (endianness == Endianness.Big)
{
_polynomial = FlipPolynomial(_polynomial);
_endianness = endianness;
}
Reset();
}
public Crc32(Crc32Type type, Endianness endianness, UInt32 seed)
{
_polynomial = GetPolynomialByType(type);
if (endianness == Endianness.Big)
{
_polynomial = FlipPolynomial(_polynomial);
_endianness = endianness;
}
_seed = seed;
Reset();
}
private UInt32 GetPolynomialByType(Crc32Type type)
{
switch (type)
{
case Crc32Type.Castagnoli:
return(0x82F63B78);
case Crc32Type.ISO_3309:
return(0xEDB88320);
case Crc32Type.Koopman:
return(0xEB31D82E);
case Crc32Type.Koopman_2:
return(0x992C1A4C);
case Crc32Type.Q:
return(0xD5828281);
default:
throw new ArgumentOutOfRangeException("type", "The type parameter must be a valid Crc32Type.");
}
}
public Crc32(Crc32Type type)
{
_polynomial = GetPolynomialByType(type);
Reset();
}
