主程序共三个
我的调用方式 <script language="javascript" src="/verify/num.asp"></script>
验证方式 if trim(Loginnum)<>trim(session("Loginnum")) then
Response.Write Error("验证码错误!")
Response.End
end if
num.asp
<%
'### To encrypt/decrypt include this code in your page
'### strMyEncryptedString = EncryptString(strString)
'### strMyDecryptedString = DeCryptString(strMyEncryptedString)
'### You are free to use this code as long as credits remain in place
'### also if you improve this code let me know.
Private Function EncryptString(strString)
'####################################################################
'### Crypt Function ? 2001 by Slavic Kozyuk grindkore@yahoo.com ###
'### Arguments: strString <--- String you wish to encrypt ###
'### Output: Encrypted HEX string ###
'####################################################################
Dim CharHexSet, intStringLen, strTemp, strRAW, I, intKey, intOffSet
Randomize Timer
intKey = Round((RND * 1000000) + 1000000) '##### Key Bitsize
intOffSet = Round((RND * 1000000) + 1000000) '##### KeyOffSet Bitsize
If IsNull(strString) = False Then
strRAW = strString
intStringLen = Len(strRAW)
For i = 0 to intStringLen - 1
strTemp = Left(strRAW, 1)
strRAW = Right(strRAW, Len(strRAW) - 1)
CharHexSet = CharHexSet & Hex(Asc(strTemp) * intKey)& Hex(intKey)
Next
EncryptString = CharHexSet & "|" & Hex(intOffSet + intKey) & "|" & Hex(intOffSet)
Else
EncryptString = ""
End If
End Function
Private Function DeCryptString(strCryptString)
'####################################################################
'### Crypt Function ? 2001 by Slavic Kozyuk grindkore@yahoo.com ###
'### Arguments: Encrypted HEX stringt ###
'### Output: Decrypted ASCII string ###
'####################################################################
asp下的一个很简单的验证码程序第1/3页
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