使用输入字符串在c#中生成CRC32校验和

using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;

public class CRC32Generator
{
    public static string GenerateChecksum(string input)
    {
        byte[] bytes = Encoding.UTF8.GetBytes(input);
        
        using (var crc32 = new CRC32())
        {
            byte[] hashBytes = crc32.ComputeHash(bytes);
            return BitConverter.ToString(hashBytes).Replace("-", "").ToLower();
        }
    }
}

public class CRC32 : HashAlgorithm
{
    private const uint Polynomial = 0xEDB88320;
    private uint[] table;
    private uint crc;

    public CRC32()
    {
        table = InitializeTable(Polynomial);
        crc = 0xFFFFFFFF;
    }

    public override void Initialize()
    {
        crc = 0xFFFFFFFF;
    }

    protected override void HashCore(byte[] array, int ibStart, int cbSize)
    {
        crc ^= 0xFFFFFFFF;

        for (int i = ibStart; i < cbSize; i++)
        {
            crc = (crc >> 8) ^ table[array[i] ^ crc & 0xFF];
        }

        crc ^= 0xFFFFFFFF;
    }

    protected override byte[] HashFinal()
    {
        byte[] hashBuffer = BitConverter.GetBytes(crc);
        Array.Reverse(hashBuffer);
        return hashBuffer;
    }

    private static uint[] InitializeTable(uint polynomial)
    {
        uint[] table = new uint[256];

        for (uint i = 0; i < 256; i++)
        {
            uint entry = i;

            for (int j = 0; j < 8; j++)
            {
                if ((entry & 1) == 1)
                {
                    entry = (entry >> 1) ^ polynomial;
                }
                else
                {
                    entry >>= 1;
                }
            }

            table[i] = entry;
        }

        return table;
    }
}

string input = "Hello, World!";
string checksum = CRC32Generator.GenerateChecksum(input);
Console.WriteLine("CRC32 Checksum: " + checksum);

CRC32 Checksum: 3610a686