Exam 6: Cryptography

Which term is used for a message in its original format?

Which term is used for the amount of time and resources that would be needed to break the encryption?

Secure Sockets Layer (SSL) is a transport layer protocol that provides encryption, server and client authentication, and message integrity.

The Caesar cipher and the Vigenere cipher are two of the earliest forms of substitution ciphers.

What is another term for a null cipher?

Which of the following is NOT an e-mail standard?

In a hybrid cipher, the asymmetric algorithm provides the keys used for encryption.

Diffie-Hellman provides secure key distribution, confidentiality, authentication, and nonrepudiation.

Substitution is also referred to as permutation.

DES and 3DES are symmetric algorithms.

What should you implement to prevent man-in-the-middle attacks against the Diffie-Hellman algorithm?

Which of the following is the most secure encryption scheme that can be used?

Julius Caesar created the scytale cipher.

Which of the following is NOT a symmetric algorithm?

The U.S. government requires the usage of SHA-2 instead of MD5.

Which hash function produces 128-, 160-, or 192-bit hash values after performing 24 rounds of computations on 512-bit blocks?

A key is a parameter that controls the transformation of plaintext into ciphertext or vice versa.

The U.S. federal government requires the use of DSA, RSA, or Elliptic Curve DSA (ECDSA) and SHA for digital signatures.

Which entity creates and signs digital certificates, maintains the certificates, and revokes them when necessary?

Which cipher uses 27 shift alphabets with letters being shifted up one place?