Exam 6: Encryption and Password Cracking

____ is a change in the position or order of letters or words, as in an anagram.

Block ciphers operate on blocks of data.

As might be expected,Triple DES is almost three times faster than DES.

____ attacks use all possible combination of letters, numbers, and special characters to determine the target password.

____________________ uses an algorithm to encrypt a ciphertext document from a plaintext document, and when the information is needed again, the algorithm is used to decrypt the ciphertext back into plaintext.

Also called public key algorithms, ____________________ key algorithms use two keys for encrypting and decrypting data.

Whether or not encryption is used, the use of password protection is open to various kinds of attack.

Sometimes called secret key algorithms, ____________________ key algorithms use the same key to encrypt and to decrypt the data.

____ is a method for secure key exchange over an insecure channel based on the nature of photons.

Briefly describe 3DES.

DSS stands for the United States government's Digital Signature Standard, which is based on the Digital Signature Algorithm (DSA).

____________________ is a secure hash algorithm developed in 1992 by Ron Rivest,one of the inventors of RSA.

Briefly describe Enigma.

____ ciphers use a key stream to encrypt and decrypt a plaintext message.

Transposition relies on length of password.

____ is the replacement of a letter or group of letters with another letter or group of letters.

The ____________________, also known as Rijndael, is a block cipher adopted as an encryption standard by the U.S. government.

Describe some of the most common terms you need to know when dealing with cryptography.