Powershell:如何将字节字符串与二进制注册表值进行比较 [英] Powershell: How to compare a byte string with a binary registry value

问题描述

我有一个二进制注册表值，我想在 Powershell 脚本中检查它的一致性.我正在通过以下方式检索值:

I have a binary registry value that I'd like to check for consistency in a Powershell script. I'm retrieving the value by:

(Get-ItemProperty -Path HKLM:\Software\ORL\WinVNC3 -Name ACL).ACL

这将返回一个字节字符串作为结果.

This returns a byte string as a result.

然后我创建一个字节字符串变量，该变量与我期望的值相匹配，然后通过 regedit.exe 导出注册表项来查询该值.然后，我通过在由逗号分隔的每个字节前面加上0x"并键入 [byte] 来从该文本创建一个字节字符串.当我只观察两个字符串时，它们完全相同.但是，当我:

I then create a byte string variable that matches what I should expect then querying this value by exporting out the registry key through regedit.exe. I then create a byte string from that text by prepending "0x" in front of each byte separated by a comma and typing is a [byte]. When I just eyeball both strings they are exactly the same. However, when I:

$RegistryValue -eq $CreatedValue

他们不返回True.我做错了什么?

they don't return True. What am I doing wrong?

推荐答案

我终于通过我自己的一些不同方法和 Compare-Object cmdlet 的组合解决了这个问题.谢谢，达拉斯.

I finally figured this out by a combination of some different methods on my part and the Compare-Object cmdlet. Thanks, Dallas.

1. 在注册表中设置适当的二进制值.
2. 通过以下方式检索值:

$ValueItsSupposedToBe = (Get-ItemProperty -Path HKLM:\Software\ORL\WinVNC3 -Name ACL).ACL

$ValueItsSupposedToBe = (Get-ItemProperty -Path HKLM:\Software\ORL\WinVNC3 -Name ACL).ACL

1. 创建一个逗号分隔的值字符串并将该字符串插入到比较脚本中.

1. Create a comma,separated string of the values and insert this string into the compare script.

在比较脚本中，拆分字符串并将其转换为字节数组.

In the compare script, split the string and convert it into a byte array.

[byte[]]$ValueItsSupposedToBe = $ValueItsSupposedToBe.Split(',')

[byte[]]$ValueItsSupposedToBe = $ValueItsSupposedToBe.Split(',')

1. 读取另一台机器上当前设置的值.

$CompareValue = (Get-ItemProperty -Path HKLM:\Software\ORL\WinVNC3 -Name ACL).ACL

$CompareValue = (Get-ItemProperty -Path HKLM:\Software\ORL\WinVNC3 -Name ACL).ACL

1. 如果 Compare-Object 返回 null，则它们相等.

比较对象 $CompareValue $ValueItsSupposedTobe

Compare-Object $CompareValue $ValueItsSupposedTobe

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