如何做一個密碼“產生器”？

randompassword.asp

<%

Dim i, intNum, intUpper, intLower, intRand, strPartPass, genPassword

genPassword = \"\"

Randomize

' 用Randomize產生隨機種子.

For i = 1 to 7

' 迴圈7次，即建立7位隨機密碼.

intNum = Int(10 * Rnd + 48)

' 0-9的ASCII碼範圍是48-57.

intUpper = Int(26 * Rnd + 65)

' A-Z的ASCII碼範圍是65-90.

intLower = Int(26 * Rnd + 97)

' a-z的ASCII碼範圍是97-123.

intRand = Int(3 * Rnd + 1)

' 對Int(3 * Rnd + 1)取整得到intRand,會有3種結果,用select case判斷當前的intRand值是1,2還是3.如果是1顯示數字,是2顯示大寫字元,是3則顯示小寫字元.

Select Case intRand

Case 1

strPartPass = Chr(intNum)

' 用Chr方法換算到對應的ASCII值.

Case 2

strPartPass = Chr(intUpper)

Case 3

strPartPass = Chr(intLower)

End Select

genPassword = genPassword & strPartPass

Next

randomPassword = genPassword

' 將建立的密碼儲存在變數randomPassword中.

%>

<%=\"請儲存好，您的密碼是：\" & randomPassword%>

 

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