Converting A Function

I need help with converting the following function in ASP.Net (VB.Net) to Classic ASP:

Function EncryptIt(_strClearText as String, _strEncryptionType as String) as String
dim strEncryptedText as String
'Encrypt the text
strEncryptedText = FormsAuthentication.HashPasswordForStoringInConfig File(_strClearText, _strEncryptionType)
return strEncryptedText
End Function

Code for Const under Button Click Event in ASP.Net:

const strENCRYPTION_TYPE = "SHA1"