Question

我有来自原始来源的以下powershell脚本。它用于生成用于验证视图状态MAC的机器密钥。但是，当我在Powershell中运行它时：

PS C:\Users\Documents> .\Generate-MachineKey.ps1 -decryptionAlgorithm AES -validationAlgorithm SHA1

没有输出，以下是脚本。什么都没有输出的原因是什么。

 function Generate-MachineKey {
  [CmdletBinding()]
  param (
    [ValidateSet("AES", "DES", "3DES")]
    [string]$decryptionAlgorithm = 'AES',
    [ValidateSet("MD5", "SHA1", "HMACSHA256", "HMACSHA384", "HMACSHA512")]
    [string]$validationAlgorithm = 'HMACSHA256'
  )
  process {
    function BinaryToHex {
        [CmdLetBinding()]
        param($bytes)
        process {
            $builder = new-object System.Text.StringBuilder
            foreach ($b in $bytes) {
              $builder = $builder.AppendFormat([System.Globalization.CultureInfo]::InvariantCulture, "{0:X2}", $b)
            }
            $builder
        }
    }
    switch ($decryptionAlgorithm) {
      "AES" { $decryptionObject = new-object System.Security.Cryptography.AesCryptoServiceProvider }
      "DES" { $decryptionObject = new-object System.Security.Cryptography.DESCryptoServiceProvider }
      "3DES" { $decryptionObject = new-object System.Security.Cryptography.TripleDESCryptoServiceProvider }
    }
    $decryptionObject.GenerateKey()
    $decryptionKey = BinaryToHex($decryptionObject.Key)
    $decryptionObject.Dispose()
    switch ($validationAlgorithm) {
      "MD5" { $validationObject = new-object System.Security.Cryptography.HMACMD5 }
      "SHA1" { $validationObject = new-object System.Security.Cryptography.HMACSHA1 }
      "HMACSHA256" { $validationObject = new-object System.Security.Cryptography.HMACSHA256 }
      "HMACSHA385" { $validationObject = new-object System.Security.Cryptography.HMACSHA384 }
      "HMACSHA512" { $validationObject = new-object System.Security.Cryptography.HMACSHA512 }
    }
    $validationKey = BinaryToHex($validationObject.Key)
    $validationObject.Dispose()
    [string]::Format([System.Globalization.CultureInfo]::InvariantCulture,
      "<machineKey decryption=`"{0}`" decryptionKey=`"{1}`" validation=`"{2}`" validationKey=`"{3}`" />",
      $decryptionAlgorithm.ToUpperInvariant(), $decryptionKey,
      $validationAlgorithm.ToUpperInvariant(), $validationKey)
  }
}

Answer 1

因为在命令中调用脚本文件实际上并没有在脚本中调用函数Generate-MachineKey。

在您的情况下，正确的方法是“dot source”脚本文件，然后调用脚本中包含的函数：

. .\Generate-MachineKey.ps1
Generate-MachineKey -decryptionAlgorithm AES -validationAlgorithm SHA1

请阅读dot sourcing Powershell scripts了解更多详情，了解脚本，功能，呼叫和点源概念之间的区别

Answer 2

您正在调用脚本，但内部没有函数。在脚本末尾添加对函数的调用：

Generate-MachineKey -decryptionAlgorithm AES  -validationAlgorithm SHA1

或者，你可以从函数中取出代码，然后让＃pa;＆＃39;而是将section作为脚本的参数定义。

生成的shell脚本不输出任何内容

2 个答案: