Re: XChaCha20 Python3 CLI tool

Phil Carmody wrote:

Stefan Claas <pollux@tilde.club> writes:

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.
 
$ ./xchacha20.py
Error: Incorrect number of arguments
Usage: ./xchacha20.py <keyfile> <noncefile> < infile > outfile
 
XChaCha20 encryption/decryption tool
 
Arguments:
  keyfile    Path to the file containing the key in hexadecimal format
  noncefile  Path to the file containing the nonce in hexadecimal format

 
Why is the nonce in a file - are you planning on using it multiple
times?

I always use nonces from files and for each message a new one. I have
my nonce rachtet program 'nora' which calculates them, without needing
to transfer them.

https://github.com/706f6c6c7578/nora

--
Regards
Stefan