[js] 초간단 암호화/복호화 소스..
by The JavaScript Source
<!-- TWO STEPS TO INSTALL ASCII ENCRYPTION:
1. Copy the coding into the HEAD of your HTML document
2. Add the last code into the BODY of your HTML document -->
<!-- STEP ONE: Paste this code into the HEAD of your HTML document -->
<HEAD>
<SCRIPT LANGUAGE="JavaScript">
<!-- Original: David Salsinha (david.salsinha@popsi.pt) -->
<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->
<!-- Begin
function Encrypt(theText) {
output = new String;
Temp = new Array();
Temp2 = new Array();
TextSize = theText.length;
for (i = 0; i < TextSize; i++) {
rnd = Math.round(Math.random() * 122) + 68;
Temp[i] = theText.charCodeAt(i) + rnd;
Temp2[i] = rnd;
}
for (i = 0; i < TextSize; i++) {
output += String.fromCharCode(Temp[i], Temp2[i]);
}
return output;
}
function unEncrypt(theText) {
output = new String;
Temp = new Array();
Temp2 = new Array();
TextSize = theText.length;
for (i = 0; i < TextSize; i++) {
Temp[i] = theText.charCodeAt(i);
Temp2[i] = theText.charCodeAt(i + 1);
}
for (i = 0; i < TextSize; i = i+2) {
output += String.fromCharCode(Temp[i] - Temp2[i]);
}
return output;
}
// End -->
</script>
</HEAD>
<!-- STEP TWO: Copy this code into the BODY of your HTML document -->
<BODY>
<center>
<form name=encform onsubmit="return false;">
<textarea name=box1 rows=5 cols=50>The quick brown fox jumps over the lazy dog</textarea>
<p>
<input type=button value="Encrypt Box1 to Box2" onClick="this.form.box2.value=Encrypt(this.form.box1.value);">
<p>
<textarea name=box2 rows=5 cols=50></textarea>
<p>
<input type=button value="Decrypt Box2 to Box3" onClick="this.form.box3.value=unEncrypt(this.form.box2.value);">
<p>
<textarea name=box3 rows=5 cols=50></textarea>
</form>
</center>
<p><center>
<font face="arial, helvetica" size="-2">Free JavaScripts provided<br>
by <a href="http://javascriptsource.com">The JavaScript Source</a></font>
</center><p>
<!-- Script Size: 1.83 KB -->
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