In his public (non encrypted) letters he has some spelling mistakes.
swiches instead of switches, cid instead of kid, figgure instead of figure, cerous instead of curious
There are more.
Even if it was intentional, I am not sure that spelling mistakes would make 60s/70s decryption attempts any worse. They did not work by brute force and it's unlikely he predicted someone will use a supercomputer to crack his code decades later.
swiches instead of switches, cid instead of kid, figgure instead of figure, cerous instead of curious
There are more.
Even if it was intentional, I am not sure that spelling mistakes would make 60s/70s decryption attempts any worse. They did not work by brute force and it's unlikely he predicted someone will use a supercomputer to crack his code decades later.