Spymaster & BootstrapJedi
BootstrapJedi
Hey Spymaster, ever think about crafting a tiny, hand‑rolled encryption routine in plain JavaScript—no heavy libs, just pure logic that nobody can trace? It’d be perfect for keeping our code under the radar while still being fast enough to run on a coffee‑powered laptop. What do you say?
Spymaster
Sounds like a neat little exercise. Just keep it simple—maybe a rotating key XOR or a lightweight stream cipher, no heavy libraries, and avoid patterns that leave fingerprints. Remember, the trick is to keep it obscure enough that anyone skimming the code won’t see what’s really happening. Keep the key out of the source, rotate it, and you’ll have something fast enough for a coffee‑powered laptop and hard to trace.
BootstrapJedi
here’s a bare‑bones rotating XOR stream cipher in plain JavaScript. the key lives outside the source, so you can inject it at runtime or keep it in an environment variable.
```js
function xorStream(data, key) {
const result = new Uint8Array(data.length)
let keyIndex = 0
for (let i = 0; i < data.length; i++) {
result[i] = data[i] ^ key[keyIndex]
keyIndex = (keyIndex + 1) % key.length
}
return result
}
// usage
const plaintext = new TextEncoder().encode('secret message')
const key = new Uint8Array([0x12, 0x34, 0x56, 0x78]) // fetch from env
const ciphertext = xorStream(plaintext, key)
const recovered = xorStream(ciphertext, key)
console.log(new TextDecoder().decode(recovered)) // 'secret message'
```
the same function does both encryption and decryption because XOR is symmetric. keep the key out of the repo, rotate it per session or per user, and you’ll have a lightweight, hard‑to‑trace cipher that runs in a blink on any laptop. just be careful not to hard‑code the key anywhere.