2 ms·
I described a relatively simple protocol that monotonically increases the security of a communication Careful. Encryption is decryption, remember. Do any of th
by bandrami 12y ago
I described a relatively simple protocol that monotonically increases the security of a communication
Careful. Encryption is decryption, remember. Do any of the rounds of CC undo any of the rounds of KC? Can you verify that bits that were correlated in PT and uncorrelated in KC are still uncorrelated in KC + CC? Does CC change the entropy content of the resulting message? (If it decreases it you have a problem, and most popular ciphers end up with damn near 8 bits per byte in the ciphertext.)
- madez 12y agoBy definition, if CC doesn't know the key and doesn't search to key space of KC and it reduces the security of KC then CC breaks KC.