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From: Stefan Claas <pollux@tilde.club>
Newsgroups: sci.crypt
Subject: Re: XChaCha20 Python3 CLI tool
Date: Sun, 8 Sep 2024 19:03:11 -0000
Organization: Ch1ffr3punk5
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Stefan Claas wrote:
> Stefan Claas wrote:
> > Stefan Claas wrote:
> > > 
> > > Hi all,
> > > 
> > > DJB's XChaCha20 stream cipher is pretty cool for Text messages (SMS),
> > > if you have also a proper encoder for the binary output.
> > > 
> > > So I decided to convert my Go Code to Python3.
> > > 
> > > Here is the program to play with, base64 encoded.
> 
> Just for fun :-):
> 
> $ echo -n 'Test' | xchacha20 key nonce | armor
> -----BEGIN PGP MESSAGE-----
> 
> eQyt7Q==
> =yEnM
> -----END PGP MESSAGE-----
> 

And a padded SMS in two fiver groups, for easy and error
free typing and reading with a dumb phone. :-)

$ echo -n 'Test' | mp | xchacha20 key nonce2 | az | ug -g
Data successfully padded.
Original size: 4 bytes
Padded size: 5 bytes
OCMOM PCSKG

-- 
Regards
Stefan