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Scream cipher

sethmlarson.dev

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Re: Scream cipher

#61

Post by junon »

Retr0id wrote: post #51
junon wrote: post #49

Earlier quoted context omitted.

Interesting, I actually expected it to encode a single letter with infinitely long combining marks such that 'highlighting' it was just highlighting one character.

You can do that too, if you increase the STACK_HEIGHT constant (btw, the decoder still works the same, so changing this doesn't break compatibility)

Oh neat! Thanks :)

Re: Scream cipher

#62

Post by efitz »

I 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!

Re: Scream cipher

#63

Post by s20n »

It's hilarious that Stream Ciphers are the closest thing to the One-Time-Pad (which provides "Perfect Secrecy") and this thing is a Monoalphabetic Substitution Cipher which provides no security whatsoever.

Re: Scream cipher

#67

Post by Bender »

fainpul wrote: post #24

One could use emojis instead, then the message could be hidden in plain sight in places where emoji-spam is common.

For fun there are other variants of base64 in a similar spirit [1][2] full unicode. [3] see other links in that repo... Not a stream cipher, just encoding but could be used in conjunction with a stream cipher to add compression. It could go turtles all the way down.

[1] - https://github.com/qntm/base2048

[2] - https://github.com/qntm/base32768

[3] - https://github.com/qntm/base65536

Re: Scream cipher

#68

Post by timonoko »

Most of these are short/long vowel markings, except last one which is (probably) implosion. And rest are frontal/back and wide/narrow A.

But Swedish "Å" is just stupidity "O", because they started pronouncing "O" as "U" and "U" as "Y".

-- Can you pronounce these screams?

Re: Scream cipher

#69

Post by eastbound »

efitz wrote: post #62

I 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.
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