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From: Stefan Claas <pollux@tilde.club>
Newsgroups: sci.crypt
Subject: Re: base26 Encoder/Decoder
Date: Mon, 29 Apr 2024 19:42:50 +0200
Organization: i2pn2 (i2pn.org)
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Stefan Claas wrote:

> Herbert Kleebauer wrote:
> 
> > If you only can use A-Z as transferable digits, you can
> > use an alternative to the standard hex encoding:
> > 
> >   0  A  or Q
> >   1  B  or R
> >   2  C  or S
> >   3  D  or T
> >   4  E  or U
> >   5  F  or V
> >   6  G  or W
> >   7  H  or X
> >   8  I  or Y
> >   9  J  or Z
> > 10  K
> > 11  L
> > 12  M
> > 13  N
> > 14  O
> > 15  P
> > 
> > Because there are two ways to encode 0-9, you
> > can use this to send a second data stream. If
> > A-J is used a 0 bit transferred and if Q-Z is used
> > a 1 bit is transferred on this second channel. You
> > can use this for example for a check sum or an
> > error correcting code.
> 
> Would this be the correct output for A-Z encoding?
> 
> $ echo -n 'sci.crypt is cool! :-)' | ./az
> XDGTWJCOWDHSXJHQXECQWJHTSAGTWPGPWMCRSADKSNCZ
> 
> $ echo -n 'sci.crypt is cool! :-)' | base16
> 7363692e637279707420697320636f6f6c21203a2d29

I would say yes, because the table matches the hex
values and the encoder/decoder is also fast enough
to handle 1 GB of data, for example. 

Well, a new tool to play with, thanks to Herbert's
suggestion. :-)

-- 
Regards
Stefan