The Double Transposition Cipher Back to Crack the Ciphers This was one of the most secure hand ciphers used in the Second World War. It was used by both the Allies and the Axis, and served both ...

Nov 30, 2022 21:00:00 What is the content of the top secret ciphertext that will be deciphered by the Holy Roman Emperor over 500 years? Charles V , who was crowned Holy Roman Emperor in 1519 at ...

In the research, they propose a blockchain-oriented scheme of controlled security level covert communication based on Bitcoin address confusion ciphertext, which alleviates the problems of ...