암호화 기법

http://cafe.naver.com/xlsvba/1276


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<script language="javascript" src="/js/base64.js"></script>
<script language="javascript">
function EncryptionText(str)
{
 var e1 = str ;
 var e2 = s2r(e1);
 return e2;
}

function DecryptionText(str)
{
 var d1 = r2s(str);
 return d1;
}
var t = "wendy81";
var a = EncryptionText(t );
alert(a);
if (t == DecryptionText(a))
{
 alert("equal");
}
else
{
 alert("difference");
}
</script>

base64.js