$ErrorActionPreference = 'Stop';
$toolsDir   = "$(Split-Path -parent $MyInvocation.MyCommand.Definition)"
$fileLocation   = Join-Path $toolsDir 'hashcat32_installer.msi'
$fileLocation64 = Join-Path $toolsDir 'hashcat64_installer.msi'

$packageArgs = @{
  packageName   = $env:ChocolateyPackageName
  fileType      = 'msi'
  file          = $fileLocation
  file64        = $fileLocation64

  softwareName  = 'Hashcat*'

  checksum      = '74996ab21482a59d89f3a3622617c275836b4549770a97beb2ff273966bc107e'
  checksumType  = 'sha256'
  checksum64    = '4dcbea9563f43b4662b34f661c748fb0c41e29204a271e68d215c550b33ae1cf'
  checksumType64= 'sha256'

  silentArgs    = "/quiet"
  validExitCodes= @(0, 3010, 1641)
}

Install-ChocolateyInstallPackage @packageArgs

$ErrorActionPreference = 'Stop';
$packageArgs = @{
  packageName   = $env:ChocolateyPackageName
  softwareName  = 'Hashcat*'
  fileType      = 'msi'
  silentArgs    = "/quiet"
  validExitCodes= @(0, 3010, 1605, 1614, 1641)
}

$uninstalled = $false
[array]$key = Get-UninstallRegistryKey -SoftwareName $packageArgs['softwareName']

if ($key.Count -eq 1) {
  $key | % { 
    $packageArgs['file'] = "$($_.UninstallString)"
    if ($packageArgs['fileType'] -eq 'MSI') {
      $packageArgs['silentArgs'] = "$($_.PSChildName) $($packageArgs['silentArgs'])"
      
      $packageArgs['file'] = ''
    }

    Uninstall-ChocolateyPackage @packageArgs
  }
} elseif ($key.Count -eq 0) {
  Write-Warning "$packageName has already been uninstalled by other means."
} elseif ($key.Count -gt 1) {
  Write-Warning "$($key.Count) matches found!"
  Write-Warning "To prevent accidental data loss, no programs will be uninstalled."
  Write-Warning "Please alert package maintainer the following keys were matched:"
  $key | % {Write-Warning "- $($_.DisplayName)"}
}

md5: 4C614F62ED4926F4F0C512494AA17506 | sha1: 074DB8D26A9D80D10CC936569A66287C0F6410C8 | sha256: 74996AB21482A59D89F3A3622617C275836B4549770A97BEB2FF273966BC107E | sha512: 3902EE00E6A4279FF3B7D4E7C44B804D9F6F1019B8E348A8A9DDBDFEAFD29B3CCA7031E6F9262F746EC4D7D887F70DDFCA8BE9364EA3DE8B50C2FF8AE825A343

md5: 9DD256F6237540B4E1424DC29714EBB2 | sha1: F2887B0A88E4E65E1CB67E0A4A15D954C1072F46 | sha256: 4DCBEA9563F43B4662B34F661C748FB0C41E29204A271E68D215C550B33AE1CF | sha512: 2A9FD9F0F9A122454A4CC45B3C12776C313F278275354CB7549467CD29C22945FC668DF7A5F2C30F30056A523BE8B568B4FEC7F3B809C773E2D97835FE409F62

From: https://github.com/hashcat/hashcat/blob/d0e66bf1985e1325aa828be2059e7304b8b66312/docs/license.txt

LICENSE

The MIT License (MIT)

Copyright (c) 2015-2017 Jens Steube

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

VERIFICATION
1. Download Hashcat v4.0.1 from https://hashcat.net/hashcat/
2. Use 7zip to unpack the files
3. Compute the checksum of the .exe files. The SHA-256-sum should be:
	hashcat64.exe: 449a12dc61ab01175f9a0bc06fd41ca7f79c7aec4febbfef8c0be20346d0c399
	hashcat32.exe: 0d1b14642402bf13ec48f93d716aa9cbd82e6b5ce70ca5a24687094f7f422db4
4. Install the Hashcat package.
	It will run a msi installer.
	The msi installer will unpack the files under (depending on architechture):
		C:\Program Files\hashcat\
		C:\Program Files (x86)\hashcat\
5. Compute the checksum of the installed binaries. They will match the checksum of the downloaded exe files.