Consider the following threats to Web security and describe how each is countered by a particular feature of TLS. A. Brute-Force Cryptanalytic Attack: An exhaustive search of the key space for a conventional encryption algorithm. B. Known Plaintext Dictionary Attack: Many messages will contain predictable plaintext, such as the HTTP GET command. An attacker constructs a dictionary containing every possible encryption of the known-plaintext message. When an encrypted message is intercepted, the attacker takes the portion containing the encrypted known-plaintext and looks up the ciphertext in the dictionary. The ciphertext should match against an entry that was encrypted with the same secret key. If there are several matches, each of these can be tried against the full ciphertext to determine the right one. This attack is especially effective against small key sizes (e.g., 40-bit keys). C. Replay Attack: Earlier TLS handshake messages are replayed. D. Man-in-the-Middle Attack: An attacker interposes during key exchange, acting as the client to the server and as the server to the client.
Consider the following threats to Web security and describe how each is countered by a particular feature of TLS.
A. Brute-Force Cryptanalytic Attack: An exhaustive search of the key space for a conventional encryption
B. Known Plaintext Dictionary Attack: Many messages will contain predictable plaintext, such as the HTTP GET command. An attacker constructs a dictionary containing every possible encryption of the known-plaintext message. When an encrypted message is intercepted, the attacker takes the portion containing the encrypted known-plaintext and looks up the ciphertext in the dictionary. The ciphertext should match against an entry that was encrypted with the same secret key. If there are several matches, each of these can be tried against the full ciphertext to determine the right one. This attack is especially effective against small key sizes (e.g., 40-bit keys).
C. Replay Attack: Earlier TLS handshake messages are replayed.
D. Man-in-the-Middle Attack: An attacker interposes during key exchange, acting as the client to the server and as the server to the client.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
