It's not necessary to write the ciphering logic. CIPHER, UNCIPHER = str.maketrans(CIPHER), str.maketrans(UNCIPHER) print(s := 'STREAM CIPHER'.translate(CIPHER)) print(s.translate(UNCIPHER))
NICE!!
Scream cipher
91–100 of 112 posts
Re: Scream cipher
#92here's a JS one liner that handles scream and unscream in one function
transform=s=>[...s.toUpperCase()].map(s=>(l="BÁGẲLẬQǞVÀCĂHẴMẦRȦWẢDẮIǍNẨSǠXȂEẶJÂOẪTẠYĀFẰKẤPÄUȀZĄ")[l.indexOf(s)^1]||s).join``Re: Scream cipher
#93I was rather confused by the dictionary comprehension syntax used there, because I wasn't aware that you could write one without the ":" to delineate the key: value pair. Turns out you can, but it just creates a dict with no values stored, just the keys! This works here because the returned dict is an iterable that returns the keys on iteration, and "update" accepts an iterable of (key, value) tuples - and the keys are just that in this case. So the effect is the same as if it was a list comprehension! Just slightly more confusing
Re: Scream cipher
#94I have been using ROT13, but I’ve been looking for a post-quantum replacement so definitely I’m going to convert to SCREAM. It’s generally understood that qubits are unable to represent or even discern the little squiggly bits above normal Latin letters. Thank you for this important contribution to cryptography!
I wonder if Chatgpt can decrypt all of them just by analyzing vowel frequency, and then trying to find the algo on the internet.
In my tests, ChatGPT 5 Thinking can handle a monoalphabetic substitution cipher if you prompt it a couple times to keep going.
Re: Scream cipher
#95I thought this was gonna be about the actual Scream stream cipher: https://eprint.iacr.org/2002/019
Re: Scream cipher
#96I was rather confused by the dictionary comprehension syntax used there, because I wasn't aware that you could write one without the ":" to delineate the key: value pair. Turns out you can, but it just creates a dict with no values stored, just the keys! This works here because the returned dict is an iterable that returns the keys on iteration, and "update" accepts an iterable of (key, value) tuples - and the keys a…
Not precisely. {x} is a set literal; {x for y in z} is a set comprehension.
Re: Scream cipher
#97Re: Scream cipher
#98Re: Scream cipher
#99I was rather confused by the dictionary comprehension syntax used there, because I wasn't aware that you could write one without the ":" to delineate the key: value pair. Turns out you can, but it just creates a dict with no values stored, just the keys! This works here because the returned dict is an iterable that returns the keys on iteration, and "update" accepts an iterable of (key, value) tuples - and the keys a…
Not precisely. {x} is a set literal; {x for y in z} is a set comprehension.
Ah, my bad! I did not know these were a thing, but that makes more sense! Teaches me a thing about only quickly trying things in an online REPL on mobile and jumping to conclusions - I forgot curly braces were also a way to denote a set
Re: Scream cipher
#100Now I need a TTS to read a scream.
Artosis' channel on Twitch has got that one covered.