dwitter.net | #codebreaking

+ New dweet
function u(t) {
} //
122/140


Please log in (or register) to post a dweet (copy-paste the code somewhere safe to save it meanwhile)


u(t) is called 60 times per second. t: Elapsed time in seconds. S: Shorthand for Math.sin. C: Shorthand for Math.cos. T: Shorthand for Math.tan. R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5) c: A 1920x1080 canvas. x: A 2D context for that canvas.
Theme challenge of the month: #crypto
show FPS hide FPS share fullscreen

function u(t) {

}//
57/140


Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

  • If the message is tiny, does it matter that my cypher sucks?
  • Show more comments…
  • u/tomxor
    Combining keystream (x) with plaintext to get ciphertext: ciphertxt = [...plaintxt].map(c => {c = String.fromCharCode(x & 31 ^ c.charCodeAt(0));x = LFSR(x);return c;}).join('')
  • u/tomxor
    Remaining pieces: keytext, plaintext, LFSR function.
  • u/tomxor
    key = 'dwitter'; plaintxt = 'awesome'
  • u/tomxor
    Only piece left is which 32bit LFSR is used to generate keystream x.

Please log in (or register) to comment.

You've reached the end.