Re:The Cryptographic Doom Principle
by bandrami on Tuesday April 14, 2015 @11:32PM
(#9378761)
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.)
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.)