如何做一个密码“生成器”？

randompassword.asp

<%

dim i, intnum, intupper, intlower, intrand, strpartpass, genpassword

genpassword = \"\"

randomize

' 用randomize生成随机种子.

for i = 1 to 7

' 循环7次，即创建7位随机密码.

intnum = int(10 * rnd + 48)

' 0-9的ascii码范围是48-57.

intupper = int(26 * rnd + 65)

' a-z的ascii码范围是65-90.

intlower = int(26 * rnd + 97)

' a-z的ascii码范围是97-123.

intrand = int(3 * rnd + 1)

' 对int(3 * rnd + 1)取整得到intrand,会有3种结果,用select case判断当前的intrand值是1,2还是3.如果是1显示数字,是2显示大写字符,是3则显示小写字符.

select case intrand

case 1

strpartpass = chr(intnum)

' 用chr方法换算到对应的ascii值.

case 2

strpartpass = chr(intupper)

case 3

strpartpass = chr(intlower)

end select

genpassword = genpassword & strpartpass

next

randompassword = genpassword

' 将创建的密码保存在变量randompassword中.

%>

<%=\"请保存好，您的密码是：\" & randompassword%>

 

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