Custom Cipher -- What do you think? 04-03-2017, 03:58 PM
#1
(Disclaimer: Use the term "encrypt" loosely in this post. Sorry.)
A while ago (back in the ol' main JavaScript game, long before I got into hacking), I made a little cipher tool to send messages to a friend and receive them back without having anybody be able to read them. Basically just a mini-encryption (use the term loosely) to prevent mitm's, etc. I'd like to know whether this could be used on a higher level, and what people generally think of it. You can create a plain-text key, and then submit the key and JS gives it a number value based on it's first 5 ascii values and multiplied by some big number that I made up. Keep in mind, this is back in the (g)olden days when I wasn't very good and/or sensible with JavaScript.
It changes the ascii values and adds some to the value to prevent against the counting of characters, then converts them back to text. For example, under a certain key. If I were to input "hello" and encrypt it with the same key, .
Is there any flaw you can find in this? Also, tell me if you don't understand some of the code or would like me to explain it in further detail.
A while ago (back in the ol' main JavaScript game, long before I got into hacking), I made a little cipher tool to send messages to a friend and receive them back without having anybody be able to read them. Basically just a mini-encryption (use the term loosely) to prevent mitm's, etc. I'd like to know whether this could be used on a higher level, and what people generally think of it. You can create a plain-text key, and then submit the key and JS gives it a number value based on it's first 5 ascii values and multiplied by some big number that I made up. Keep in mind, this is back in the (g)olden days when I wasn't very good and/or sensible with JavaScript.
Code:
function charChange(form) {
var intinp = form.input.value
var inparr = new Array(intinp.length)
var arrplu = new Array(inparr.length)
var newasc = new Array(arrplu.length)
for (var i = 0; i < inparr.length; i++) {
var lengthn = i
var cca = intinp.charCodeAt(i)
inparr[i] = cca
var inppluss = ((inparr[i] + 2) + lengthn) + finalkey / 30000000
console.log(inppluss)
var inpplu = Math.round(inppluss)
console.log(inpplu);
var arrdec = String.fromCharCode(inpplu)
newasc[i] = arrdec
var newascstr = newasc.join("")
document.getElementById("output").value =
newascstr
}
}It changes the ascii values and adds some to the value to prevent against the counting of characters, then converts them back to text. For example,
Code:
aaaaaaaaa --> defghijklCode:
hello --> kiqrvIs there any flaw you can find in this? Also, tell me if you don't understand some of the code or would like me to explain it in further detail.
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