2 ms·

With a desktop computer, running a FLOSS system? Or a classic phone with a simple voice scrambler? For written messages ciphered paper letters, with a classic a

by kkfx 5y ago

With a desktop computer, running a FLOSS system? Or a classic phone with a simple voice scrambler? For written messages ciphered paper letters, with a classic and simply alphabetic cipher like the classic Vigenère?