# Cambiar la página de códigos a UTF-8
chcp 65001

# Configurar la consola para usar UTF-8
[Console]::OutputEncoding = [System.Text.Encoding]::UTF8


# Array con las licencias genéricas
$genericLicenses = @(
    "YTMG3-N6DKC-DKB77-7M9GH-8HVX7",
    "4CPRK-NM3K3-X6XXQ-RXX86-WXCHW",
    "BT79Q-G7N6G-PGBYW-4YWX6-6F4BT",
    "N2434-X9D7W-8PF6X-8DV9T-8TYMD",
    "VK7JG-NPHTM-C97JM-9MPGT-3V66T",
    "2B87N-8KFHP-DKV6R-Y2C8J-PKCKT",
    "DXG7C-N36C4-C4HTG-X4T3X-2YV77",
    "WYPNQ-8C467-V2W6J-TX4WX-WT2RQ",
    "8PTT6-RNW4C-6V7J2-C2D3X-MHBPB",
    "GJTYN-HDMQY-FRR76-HVGC7-QPF8P",
    "YNMGQ-8RYV3-4PGQ3-C8XTP-7CFBY",
    "84NGF-MHBT6-FXBX8-QWJK7-DRR8H",
    "XGVPP-NMH47-7TTHJ-W3FW7-8HV2C",
    "WGGHN-J84D6-QYCPR-T7PJ7-X766F",
    "FW7NV-4T673-HF4VX-9X4MM-B4H4T",
    "TX9XD-98N7V-6WMQ6-BX7FG-H8Q99",
    "3KHY7-WNT83-DGQKR-F7HPR-844BM",
    "7HNRX-D7KGG-3K4RQ-4WPJ4-YTDFH",
    "PVMJN-6DFY6-9CCP6-7BKTT-D3WVR",
    "W269N-WFGWX-YVC9B-4J6C9-T83GX",
    "MH37W-N47XK-V7XM9-C7227-GCQG9",
    "NRG8B-VKK3Q-CXVCJ-9G2XF-6Q84J",
    "9FNHH-K3HBT-3W4TD-6383H-6XYWF",
    "6TP4R-GNPTD-KYYHQ-7B7DP-J447Y",
    "YVWGF-BXNMC-HTQYQ-CPQ99-66QFC",
    "NW6C2-QMPVW-D7KKK-3GKT6-VCFB2",
    "2WH4N-8QGBV-H22JP-CT43Q-MDWWJ",
    "NPPR9-FWDCX-D2C8J-H872K-2YT43",
    "DPH2V-TTNVB-4X9Q3-TJR4H-KHJW4",
    "YYVX9-NTFWV-6MDM3-9PT4T-4M68B",
    "44RPN-FTY23-9VTTB-MP9BX-T84FV",
    "M7XTQ-FN8P6-TTKYV-9D4CC-J462D",
    "92NFX-8DJQP-P6BBQ-THF9C-7CG2H",
    "46J3N-RY6B3-BJFDY-VBFT9-V22HG",
    "PGGM7-N77TC-KVR98-D82KJ-DGPHV",
    "RHGJR-N7FVY-Q3B8F-KBQ6V-46YP4",
    "GH37Y-TNG7X-PP2TK-CMRMT-D3WV4",
    "68WP7-N2JMW-B676K-WR24Q-9D7YC",
    "37GNV-YCQVD-38XP9-T848R-FC2HD",
    "33CY4-NPKCC-V98JP-42G8W-VH636",
    "NF6HC-QH89W-F8WYV-WWXV4-WFG6P",
    "NH7W7-BMC3R-4W9XT-94B6D-TCQG3",
    "NTRHT-XTHTG-GBWCG-4MTMP-HH64C",
    "7B6NC-V3438-TRQG7-8TCCX-H6DDY",
    "3NF4D-GF9GY-63VKH-QRC3V-7QW8P",
    "NK96Y-D9CD8-W44CQ-R8YTK-DYJWX",
    "FWN7H-PF93Q-4GGP8-M8RF3-MDWWW",
    "WNMTR-4C88C-JK8YV-HQ7T2-76DF9",
    "2F77B-TNFGY-69QQF-B8YKP-D69TJ",
    "DCPHK-NFMTC-H88MJ-PFHPY-QJ4BJ",
    "QFFDN-GRT3P-VKWWX-X7T3R-8B639",
    "CB7KF-BWN84-R7R2Y-793K2-8XDDG",
    "WC2BQ-8NRM3-FDDYY-2BFGV-KHKQY",
    "JCKRF-N37P4-C2D82-9YXRT-4M63B",
    "WMDGN-G9PQG-XVVXX-R3X43-63DFG",
    "N69G4-B89J2-4G8F4-WWYCC-J464C",
    "WVDHN-86M7X-466P6-VHXV7-YY726",
    "46V6N-VCBYR-KT9KT-6Y4YF-QGJYH",
    "V7C3N-3W6CM-PDKR2-KW8DQ-RJMRD",
    "7QNT4-HJDDR-T672J-FBFP4-2J8X9",
    "4NX4X-C98R3-KBR22-MGBWC-D667X",
    "NH7GX-2BPDT-FDPBD-WD893-RJMQ4",
    "NTTX3-RV7VB-T7X7F-WQYYY-9Y92"
)

# Obtiene la información de la versión de Windows
$osInfo = [System.Environment]::OSVersion.Version

# Define la versión de Windows y su edición
if ($osInfo.Major -eq 10) {
    # Windows 10
    $edition = Get-WmiObject -Class Win32_OperatingSystem | Select-Object -ExpandProperty Caption
    $windowsVersion = "Windows 10"
} elseif ($osInfo.Major -eq 6 -and $osInfo.Minor -eq 1) {
    # Windows 7
    $edition = "Windows 7"
    $windowsVersion = "Windows 7"
} elseif ($osInfo.Major -eq 6 -and $osInfo.Minor -eq 2) {
    # Windows 8
    $edition = "Windows 8"
    $windowsVersion = "Windows 8"
} elseif ($osInfo.Major -eq 6 -and $osInfo.Minor -eq 3) {
    # Windows 8.1
    $edition = "Windows 8.1"
    $windowsVersion = "Windows 8.1"
} elseif ($osInfo.Major -eq 11) {
    # Windows 11
    $edition = Get-WmiObject -Class Win32_OperatingSystem | Select-Object -ExpandProperty Caption
    $windowsVersion = "Windows 11"
} else {
    $edition = "Versión de Windows no identificada"
    $windowsVersion = "Versión de Windows no identificada"
}




function Get-WindowsProductKeyFromRegistry {
  $is64Bit = [Environment]::Is64BitOperatingSystem
  if ($is64Bit) {
      $view = [Microsoft.Win32.RegistryView]::Registry64
  } else {
      $view = [Microsoft.Win32.RegistryView]::Registry32
  }

  $localKey = [Microsoft.Win32.RegistryKey]::OpenBaseKey([Microsoft.Win32.RegistryHive]::LocalMachine, $view)
  $registryKey = $localKey.OpenSubKey("SOFTWARE\Microsoft\Windows NT\CurrentVersion")
  $registryKeyValue = $registryKey.GetValue("DigitalProductId")
  $localKey.Close()

  if (-not $registryKeyValue) {
      Write-Host "Failed to get DigitalProductId from registry"
      return
  }

  $digitalProductId = [byte[]]$registryKeyValue
  $isWin8OrUp = ([Environment]::OSVersion.Version.Major -eq 6 -and [Environment]::OSVersion.Version.Minor -ge 2) -or [Environment]::OSVersion.Version.Major -gt 6

  return (Get-WindowsProductKeyFromDigitalProductId -DigitalProductId $digitalProductId -DigitalProductIdVersion $(if ($isWin8OrUp) { "Windows8AndUp" } else { "UpToWindows7" }))
}

function Get-WindowsProductKeyFromDigitalProductId {
  param (
      [byte[]]$DigitalProductId,
      [string]$DigitalProductIdVersion
  )

  if ($DigitalProductIdVersion -eq "Windows8AndUp") {
      return DecodeProductKeyWin8AndUp -DigitalProductId $DigitalProductId
  } else {
      return DecodeProductKey -DigitalProductId $digitalProductId
  }
}

function DecodeProductKey {
  param (
      [byte[]]$DigitalProductId
  )

  $keyStartIndex = 52
  $keyEndIndex = $keyStartIndex + 14
  $decodeLength = 29
  $decodeStringLength = 15
  $decodedChars = @()

  $digits = 'B', 'C', 'D', 'F', 'G', 'H', 'J', 'K', 'M', 'P', 'Q', 'R', 'T', 'V', 'W', 'X', 'Y', '2', '3', '4', '6', '7', '8', '9'

  for ($i = $keyStartIndex; $i -le $keyEndIndex; $i++) {
      $decodedChars += $DigitalProductId[$i]
  }

  for ($i = $decodeLength - 1; $i -ge 0; $i--) {
      if (($i + 1) % 6 -eq 0) {
          $decodedChars[$i] = '-'
      } else {
          $digitMapIndex = 0
          for ($j = $decodeStringLength - 1; $j -ge 0; $j--) {
              $byteValue = ($digitMapIndex -shl 8) -bor $DigitalProductId[$j]
              $digitMapIndex = $byteValue % 24
              $DigitalProductId[$j] = [math]::Floor($byteValue / 24)
              $decodedChars[$i] = $digits[$digitMapIndex]
          }
      }
  }

  return -join $decodedChars
}

function DecodeProductKeyWin8AndUp {
  param (
      [byte[]]$DigitalProductId
  )

  $key = ""
  $keyOffset = 52
  $digits = "BCDFGHJKMPQRTVWXY2346789"

  $isWin8 = ($DigitalProductId[66] -shr 1) -band 1
  $DigitalProductId[66] = ($DigitalProductId[66] -band 0xf7) -bor ($isWin8 -shl 2)

  for ($i = 24; $i -ge 0; $i--) {
      $current = 0
      for ($j = 14; $j -ge 0; $j--) {
          $current = $current * 256
          $current = $DigitalProductId[$j + $keyOffset] + $current
          $DigitalProductId[$j + $keyOffset] = [math]::Floor($current / 24)
          $current = $current % 24
      }
      $key = $digits[$current] + $key
  }

  $keypart1 = $key.Substring(1, $current)
  $keypart2 = $key.Substring($current + 1)
  $key = $keypart1 + "N" + $keypart2

  for ($i = 5; $i -lt $key.Length; $i += 6) {
      $key = $key.Insert($i, "-")
  }

  return $key
}
$key = Get-WindowsProductKeyFromRegistry


# Llamar a la función principal para obtener y mostrar la clave del producto
cls
# Muestra la versión y la edición de Windows por pantalla
Write-Host "================================" -ForegroundColor White
Write-Host "= Clave de licencia de Windows =" -ForegroundColor White
Write-Host "================================" -ForegroundColor White
Write-Host " "
Write-Host "Edición:               " -NoNewline -ForegroundColor Gray
Write-Host $edition -ForegroundColor Cyan

# Comprobar si la clave de licencia es genérica
if ($genericLicenses -contains $key) {
    Write-Host "Número de licencia:    " -NoNewline -ForegroundColor Gray
	Write-Host -ForegroundColor Yellow $key
    Write-Host "Tipo de licencia:      " -NoNewline -ForegroundColor Gray
	Write-Host "Genérica" -ForegroundColor Yellow
} else {
    Write-Host "Número de licencia:    " -NoNewline -ForegroundColor Gray
	Write-Host -ForegroundColor Green $key
    Write-Host "Tipo de licencia:      " -NoNewline -ForegroundColor Gray
	Write-Host "Original" -ForegroundColor Green
}
Write-Host " "

# Borrar historial
Write-Host " "
$historyFilePath = Join-Path $env:USERPROFILE 'AppData\Roaming\Microsoft\Windows\PowerShell\PSReadline\ConsoleHost_history.txt'
if (Test-Path $historyFilePath) {
    Remove-Item $historyFilePath
}