View difference between Paste ID: ShsUSctL and s7eJQJk5

 Add-Type -TypeDefinition @"
 // Copyright (c) Damien Guard.  All rights reserved.
 // Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
 // Originally published at http://damieng.com/blog/2006/08/08/calculating_crc32_in_c_and_net
 // JaCk sourced it from: https://pastebin.com/s7eJQJk5
 
 using System;
 using System.Collections.Generic;
 using System.Security.Cryptography;
 
 /// <summary>
 /// Implements a 32-bit CRC hash algorithm compatible with Zip etc.
 /// </summary>
 /// <remarks>
 /// Crc32 should only be used for backward compatibility with older file formats
 /// and algorithms. It is not secure enough for new applications.
 /// If you need to call multiple times for the same data either use the HashAlgorithm
 /// interface or remember that the result of one Compute call needs to be ~ (XOR) before
 /// being passed in as the seed for the next Compute call.
 /// </remarks>
 public sealed class Crc32 : HashAlgorithm
 {
     public const UInt32 DefaultPolynomial = 0xedb88320u;
     public const UInt32 DefaultSeed = 0xffffffffu;
 
     static UInt32[] defaultTable;
 
     readonly UInt32 seed;
     readonly UInt32[] table;
     UInt32 hash;
 
     public Crc32()
         : this(DefaultPolynomial, DefaultSeed)
     {
     }
 
     public Crc32(UInt32 polynomial, UInt32 seed)
     {
         table = InitializeTable(polynomial);
         this.seed = hash = seed;
     }
 
     public override void Initialize()
     {
         hash = seed;
     }
 
     protected override void HashCore(byte[] array, int ibStart, int cbSize)
     {
         hash = CalculateHash(table, hash, array, ibStart, cbSize);
     }
 
     protected override byte[] HashFinal()
     {
         var hashBuffer = UInt32ToBigEndianBytes(~hash);
         HashValue = hashBuffer;
         return hashBuffer;
     }
 
     public override int HashSize { get { return 32; } }
 
     public static UInt32 Compute(byte[] buffer)
     {
         return Compute(DefaultSeed, buffer);
     }
 
     public static UInt32 Compute(UInt32 seed, byte[] buffer)
     {
         return Compute(DefaultPolynomial, seed, buffer);
     }
 
     public static UInt32 Compute(UInt32 polynomial, UInt32 seed, byte[] buffer)
     {
         return ~CalculateHash(InitializeTable(polynomial), seed, buffer, 0, buffer.Length);
     }
 
     static UInt32[] InitializeTable(UInt32 polynomial)
     {
         if (polynomial == DefaultPolynomial && defaultTable != null)
             return defaultTable;
 
         var createTable = new UInt32[256];
         for (var i = 0; i < 256; i++)
         {
             var entry = (UInt32)i;
             for (var j = 0; j < 8; j++)
                 if ((entry & 1) == 1)
                     entry = (entry >> 1) ^ polynomial;
                 else
                     entry = entry >> 1;
             createTable[i] = entry;
         }
 
         if (polynomial == DefaultPolynomial)
             defaultTable = createTable;
 
         return createTable;
     }
 
     static UInt32 CalculateHash(UInt32[] table, UInt32 seed, IList<byte> buffer, int start, int size)
     {
         var crc = seed;
         for (var i = start; i < size - start; i++)
             crc = (crc >> 8) ^ table[buffer[i] ^ crc & 0xff];
         return crc;
     }
 
     static byte[] UInt32ToBigEndianBytes(UInt32 uint32)
     {
         var result = BitConverter.GetBytes(uint32);
 
         if (BitConverter.IsLittleEndian)
             Array.Reverse(result);
 
         return result;
     }
 }
 "@ -PassThru | Out-Null
 
 Function Get-Crc32
 {
     Param (
         [Parameter(Mandatory=$true)][String]$String
     )
     $crc32 = New-Object Crc32
     $encoding = [System.Text.Encoding]::UTF8
 
     $bytes = $encoding.GetBytes($String)
 
     $hash = [String]::Empty
     foreach ($byte in $crc32.ComputeHash($bytes))
     {
         $hash += $byte.toString('x2').toLower()
     }
 
     $hash
 }