檢查密碼最小長度

我正在構建我自己的PowerShell GUI密碼生成器，目前爲止它的工作原理。但是，當我想要更多地控制輸入時，我遇到了一個問題; 驗證最小長度輸入是否大於x。檢查密碼最小長度

$NumberBox1是設置密碼長度的文本框。如果小於8，則應該自動將其設置爲8，並在單擊該按鈕時生成密碼。如果我將文本框$NumberBox1中的值更改爲9，則該值有效。但不是當值低於8或高於9

這是這一部分，我不能得到正確的：

## Check password length 
if ($pw_length -le "7") { 
    $pw_length = "8" 
    $NumberBox1.Text = "8" 
}

如果我註釋掉上面的部分，我可以設置密碼的長度。

全部下面的代碼：

[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms") 
[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Drawing") 

$form1 = New-Object System.Windows.Forms.Form 
$form1.Text = "Password generator" 
$form1.Name = "Password generator" 
$System_Drawing_Size = New-Object System.Drawing.Size 
$System_Drawing_Size.Width = 400 
$System_Drawing_Size.Height = 200 
$form1.ClientSize = $System_Drawing_Size 

$NumberBox1 = New-Object System.Windows.Forms.TextBox 
$NumberBox1.Location = New-Object System.Drawing.Size(110,20) 
$NumberBox1.Size = New-Object System.Drawing.Size(50,25) 
$NumberBox1.Text = "12" 

$InfoBox1 = New-Object System.Windows.Forms.Label 
$InfoBox1.Location = New-Object System.Drawing.Size(20,23) 
$InfoBox1.Size = New-Object System.Drawing.Size(150,25) 
$InfoBox1.Text = "Password length:" 

$InfoBox3 = New-Object System.Windows.Forms.Label 
$InfoBox3.Location = New-Object System.Drawing.Size(170,24) 
$InfoBox3.Size = New-Object System.Drawing.Size(180,25) 
$InfoBox3.Text = "Minimum length is always set to 8" 

$TextBox1 = New-Object System.Windows.Forms.TextBox 
$TextBox1.Location = New-Object System.Drawing.Size(200,140) 
$TextBox1.Size = New-Object System.Drawing.Size(150,25) 

$generate = New-Object System.Windows.Forms.Button 
$generate.Location = New-Object System.Drawing.Size(20,140) 
$generate.Size = New-Object System.Drawing.Size(150,22) 
$generate.Text = "Generate password" 

$InfoBox2 = New-Object System.Windows.Forms.Label 
$InfoBox2.Location = New-Object System.Drawing.Size(20,165) 
$InfoBox2.Size = New-Object System.Drawing.Size(360,25) 

$generate.Add_Click({ 
    $pw_length = $NumberBox1.Text 

    ## Check password length 
    if ($pw_length -lt "7") { 
     $pw_length = "8" 
     $NumberBox1.Text = "8" 
    } 

    ## Password with letters, numbers and punctiation 
    $PW_F = ([char[]](Get-Random -Input $(33..93 + 95 + 97..122) -Count $pw_length)) -join "" 

    $TextBox1.Text = $pw_F 
    $InfoBox2.Text = "Full complexity used. Length: $pw_length" 
}) 

$form1.Controls.Add($generate) 
$form1.Controls.Add($NumberBox1) 
$form1.Controls.Add($TextBox1) 
$form1.Controls.Add($InfoBox1) 
$form1.Controls.Add($InfoBox2) 
$form1.Controls.Add($InfoBox3) 

$form1.Add_Shown({$form1.Activate()}) 
[void] $form1.ShowDialog()

來源

2017-08-27 GreyWilk

你$pw_length包含string。對於您的-lt操作，您需要它是一個integer。

解決方法：像這樣投射你的變量。

[int]$pw_length = $NumberBox1.Text

或

$pw_length = $NumberBox1.Text -as [int]

來源

2017-08-27 14:40:01 vrdse

您可以使用[數學] :: max函數，所以沒有必要時（內在鑄造）：

$generate.Add_Click({ 

    $pw_length = [math]::max($NumberBox1.Text,8) 
    $NumberBox1.Text = $pw_length 

    ## Password with letters, numbers and punctiation 
    $PW_F = ([char[]](Get-Random -Input $(33..93 + 95 + 97..122) -Count $pw_length)) -join "" 

    $TextBox1.Text = $pw_F 
    $InfoBox2.Text = "Full complexity used. Length: $pw_length" 
})

來源

2017-08-27 15:14:09 LotPings

檢查密碼最小長度

回答

相關問題