獲得證書目的

Question

我有這個代碼，可以獲取有關“本地機器”SSL證書的信息，並將它們存儲在CSV文件中。 我擔心的是我找不到定義這些證書的正確名稱。 所以我問是否有一個字段表明證書名稱？

此外，我想存儲SSL證書的“預期用途”，我無法弄清楚如何做到這一點。

最后的問題，我發現有一些證書，其中“目標用途”字段具有ALL值，所以我想知道在這種情況下提到的目的是什么？

這是我的腳本，我希望它也向我展示“Intented Purposes”，如果找到了證書的名稱。

$StartDate = Get-Date
$CertPath = 'Cert:\LocalMachine\'
$CertsDetail = Get-ChildItem -Path $CertPath -Recurse | Where-Object {
    $_.PsIsContainer -ne $true
} | ForEach-Object {
    $DaysLeft = (New-TimeSpan -Start $StartDate -End $_.NotAfter).Days
    if ($DaysLeft -lt 1) {
        $Under30 = $true
        $Expired = $true
        $Text = "The Certificate is expired"
    } elseif ($DaysLeft -lt 30) {
        $Under30 = $true
        $Expired = $false
        $Text = "The Certificate is but valid about to expire"
    } else {
        $Under30 = $false
        $Expired = $false
        $Text = "The Certificate is still valid and not going soon to expire"
    }
    $FinalDate = Get-Date $_.NotAfter -Format 'dd/MM/yyyy hh:mm'

    [PSCustomObject]@{
        Text = $Text
        Subject = $_.Subject
        ExpireDate = $FinalDate
        DaysRemaining = $DaysLeft
        Under30Days = $Under30
        Expired = $Expired
    }
}
$CertsDetail | Where-Object {
    $_.DaysRemaining -lt 3650
} | Export-Csv -NoTypeInformation -Path 'C:\SECnology\Data\Utilities\Certificate_State.csv'

Answer 1

以下腳本迭代Cert Extensions，如果是Usage，則存儲在變量$ Usage中，並將其合並到[PSCustomObject]中

編輯：納入JosefZ的寶貴提示

## Q:\Test\2019\05\22\SO_56254011.ps1
$StartDate = Get-Date
$CertPath  = 'Cert:\LocalMachine\'
$FileOut   = 'C:\SECnology\Data\Utilities\Certificate_State.csv'
$CertsDetail = Get-ChildItem -Path $CertPath -Recurse | Where-Object {
    $_.PsIsContainer -ne $true
} | ForEach-Object {
    $DaysLeft = (New-TimeSpan -Start $StartDate -End $_.NotAfter).Days
    if ($DaysLeft -lt 1) {
        $Under30 = $true
        $Expired = $true
        $Text = "The Certificate is expired"
    } elseif ($DaysLeft -lt 30) {
        $Under30 = $true
        $Expired = $false
        $Text = "The Certificate is but valid about to expire"
    } else {
        $Under30 = $false
        $Expired = $false
        $Text = "The Certificate is still valid and not going soon to expire"
    }
    $FinalDate = Get-Date $_.NotAfter -Format 'dd/MM/yyyy hh:mm'
    $Usages = foreach($key in $_.Extensions){
      if('KeyUsages' -in $key.psobject.Properties.Name ){ $key.KeyUsages}
      if('EnhancedKeyUsages' -in $key.psobject.Properties.Name){
          $key.EnhancedKeyUsages.FriendlyName
      }
    }
    [PSCustomObject]@{
        Text         = $Text
        Subject       = $_.Subject
        ExpireDate    = $FinalDate
        DaysRemaining = $DaysLeft
        Under30Days   = $Under30
        Expired       = $Expired
        Usages        = $Usages-join ';'
    }
}
$CertsDetail | Out-Gridview
$CertsDetail | Where-Object {
    $_.DaysRemaining -lt 3650
} | Export-Csv -NoTypeInformation -Path $FileOut

樣本輸出。

Text          : The Certificate is expired
Subject       : CN=SITHS CA v3, O=Carelink, C=SE
ExpireDate    : 28-11-2015 07:02
DaysRemaining : -1271
Under30Days   : True
Expired       : True
Usages        : CrlSign, KeyCertSign