MoneroMaster

Great idea! yes throwing in random and arbitrary letters can strengthen the encryption. Something I was thinking about was replacing spaces with "-[random text]-"

Example:

sdfsdf-iuocbff-oiurwqx-afewef-gupioue

So the true encrypted text would be sdfsdf oiurwqx gupioue with -iuocbff- -afewef- representing spaces.

Yes it is not impervious to brute force-frequency analysis, however it still has it's uses.

Thanks, glad you found something useful in it.

I'm not sure, I'll have to look into polyseed. I guess the over all point is to take elements of this and make it your own :)

My key focus, as you pointed out, was not to use any third-party software or technology. Trying to think of a "worst case scenario" that provides decent encryption while also only needing a memorisation of a short password and a pen/paper. You could write out the Vigenère Table by hand if you really wanted to.

Next, in this line of thinking, I'll do something on the Playfair Code which was used by the British during the Boer War and by German spies during WWII

An index with contact info would be sound.

Listings and requests can also be done on https://moneromarket.io