Internet Security Quiz

Interception, Manipulation, Impersonation and Repudiation are typical threats to security in communications.

• True

• False

AES and DES are symmetric key encryption mechanisms.

• True

• False

DES and AES are examples of block-based ciphering mechanisms.

• True

• False

The DES (Data Encryption Standard) for symmetric encryption is obsolete (it is not used) respect to the AES (Advanced Encryption Standard).

• True

• False

It is not possible to use the AES algorithm for digital signature.

• True

• False

In cryptography, the “confusion” principle is the one that provokes that a small change in the key achieves a big change in the ciphered text.

• True

• False

In cryptography, the “diffusion” principle is the one that achieves that with a small change in the clear text, a big change in the ciphered text will happen (plain text vs. cipher text independence).

• True

• False

SubBytes, ShiftRows and MixColumns are examples of permutations of the RSA algorithm for symmetric encryption.

• True

• False

ShiftRows, MixColumns and AddRoundKey are examples of permutations of the DES algorithm for symmetric encryption.

• True

• False

Diffie-Hellman allows sharing a secret key through the communication channel in a secure manner.

• True

• False