3 ms·
A big problem with these types of ciphers is that you need to transmit the key somehow. If you have had no previous encrypted contact with the intended receiver
by gonnakillme 16y ago
A big problem with these types of ciphers is that you need to transmit the key somehow. If you have had no previous encrypted contact with the intended receiver, you have to get the key to that person in plaintext. This is why public key cryptography was invented.
As a side note, isn't this just a less secure Enigma cipher? Alan Turing would have your u-boats for dinner.
- billpg 16y ago"isn't this just a less secure Enigma cipher?" Talk is cheap, my friend. I've described the algorithm and supplied some cipher-text. What's the plain text? Seriously though, if you know what the Enigma cipher is without having to look it up, you're probably over qualified for this sort of puzzle.
- swolchok 16y agoWell, the first word is probably THE. I have doubts as to whether this is broken enough in practice if you follow standard cryptographic practice and remove spacing and punctuation; the key space size is still 26^17, assuming "random codeword" means a random string of letters and not a randomly selected string of one or more dictionary words.
- billpg 16y agoThe key is 17 random letters generated using the password generator at GRC.COM. I don't think I'm giving away anything by confirming that at least one of those three letter groups is "THE".