PowerShell - 解碼System.Security.SecureString爲可讀密碼

Question

我想解密從System.Security.SecureString到可讀密碼的密碼。

$password = convertto-securestring "TestPassword" -asplaintext -force 
$credentials = New-Object System.Net.NetworkCredential("TestUsername", $password, "TestDomain") 

此代碼部分工作正常，我可以使用$ credentials對象。 但後來在我的代碼中，我需要可讀格式的密碼。因爲方法需要可讀字符串中的密碼。所以我必須將密碼解碼回來。

如何從$ credentials對象解碼密碼？

更新

不工作：

$password = convertto-securestring "TestPassword" -asplaintext -force 
$credentials = New-Object System.Net.NetworkCredential("TestUsername", $password, "TestDomain") 

$Ptr = [System.Runtime.InteropServices.Marshal]::SecureStringToCoTaskMemUnicode($credentials.password) 
$result = [System.Runtime.InteropServices.Marshal]::PtrToStringUni($Ptr) 
[System.Runtime.InteropServices.Marshal]::ZeroFreeCoTaskMemUnicode($Ptr) 
$result 

Answer 1

在這裏你去：

$password = ConvertTo-SecureString 'P@ssw0rd' -AsPlainText -Force 

$Ptr = [System.Runtime.InteropServices.Marshal]::SecureStringToCoTaskMemUnicode($password) 
$result = [System.Runtime.InteropServices.Marshal]::PtrToStringUni($Ptr) 
[System.Runtime.InteropServices.Marshal]::ZeroFreeCoTaskMemUnicode($Ptr) 
$result 

2P @ ssw0rd

Answer 2

的細節解釋http://blogs.msdn.com/b/besidethepoint/archive/2010/09/21/decrypt-secure-strings-in-powershell.aspx

我還有另一個稍微不同的方法。

$pass=convertto-securestring "P@ssw0rd" -asplaintext -force | ConvertFrom-SecureString 
[Runtime.InteropServices.Marshal]::PtrToStringAuto([Runtime.InteropServices.Marshal]::SecureStringToBSTR((ConvertTo-SecureString $pass))) 

2P @ ssw0rd

Answer 3

($credentials.GetNetworkCredential()).Password 

Answer 4

對於 「System.Net.NetworkCredential」 對象，所有你需要做的是閱讀的字符串密碼。

$password = convertto-securestring "TestPassword" -asplaintext -force 
$credentials = New-Object System.Net.NetworkCredential("TestUsername", $password, "TestDomain") 
$credentials.Password 
TestPassword 

$credentials | gm 

TypeName: System.Net.NetworkCredential 

Name   MemberType Definition 
----   ---------- ---------- 
Equals   Method  bool Equals(System.Object obj) 
GetCredential Method  System.Net.NetworkCredential GetCredential(uri uri, str 
GetHashCode Method  int GetHashCode() 
GetType  Method  type GetType() 
ToString  Method  string ToString() 
Domain   Property string Domain {get;set;} 
Password  Property string Password {get;set;} 
SecurePassword Property securestring SecurePassword {get;set;} 
UserName  Property string UserName {get;set;} 

如果你結束了一個PSCredential對象，從以獲得更多信息，證書使用交互式命令

$credentials=Get-Credential 
$credentials.GetNetworkCredential().UserName 
TestUsername 
$credentials.GetNetworkCredential().Domain 
TestDomain 
$credentials.GetNetworkCredential().Password 
TestPassword 

詳見http://blogs.technet.com/b/heyscriptingguy/archive/2013/03/26/decrypt-powershell-secure-string-password.aspx。

注：我在這個例子中使用了PS 4。