"A cryptosystem should be secure even if the attacker knows all details about the system, except the key." is often referred to as the Principle of Cryptology LaCava's Theorem Kerckhoff's principle Theory of key security QUESTION 5 Substitution ciphers are not vulnerable to Brute force-attack True False The science of breaking or analyzing a secret message is known as Cryptography Cryptanalysis Cryptology Cryptofusion QUESTION 8 Symmetric key cryptography is also known as private key/secret key cryptography True False QUESTION 9 The science of secret writing with the goal of hiding a message is known as Cryptography Cryptanalysis Cryptology Diffusion QUESTION 10 The security of a stream cipher depends entirely on the key stream True False