WGU C839 FLASH CARDS FOR OA
which two symmetric block encryption modes turn block ciphers into stream
ciphers? - ANSWERS-OFB - CTR
Ciphertext Only Attack - ANSWERS-an attack in which the attacker only has access
to the ciphertext of a message?
Co-Prime - ANSWERS-a number that only shares the number 1 as a common
factor with another?
Differential cryptanalysis - ANSWERS-involves the examination of differences in
an input and how that affects the resultant difference in output
Mono-Alphabetic Ciphers - ANSWERS-Atbash - Scytale - ROT-13
Playfair - ANSWERS-Cipher makes use of a 5x5 table containing a keyword or key
phrase and encrypts pairs of letters or digraphs
Cryptosystem - ANSWERS-represents the entire cryptographic operation i.e. the
algorithm, key, and key management functions
Prime - ANSWERS-number whose factors are 1 and itself?
, Pseudo-random number generator - ANSWERS-a mechanism used to create
number streams with random properties. Examples include Lagged Fibonacci and
Mersenne Twister
Kerberos Ticket - ANSWERS-Used to authenticate. Contains the identity of the
client, the session key, timestamp, and checksum
Kerberos TGS - ANSWERS-Issues tickets
Kerberos KDC - ANSWERS-Server that provides the initial ticket
Kerberos TGT - ANSWERS-The ticket that is granted during the authentication
process
Kerberos AS - ANSWERS-Server that authorizes the principal and connects them
to the ticket granting server
DES - ANSWERS-64 Bit Block - 56 Bit Key - 16 Rounds
AES - ANSWERS-128 Bit Block - 128, 192, 256 Bit Key - 10, 12, 14 Rounds
which two symmetric block encryption modes turn block ciphers into stream
ciphers? - ANSWERS-OFB - CTR
Ciphertext Only Attack - ANSWERS-an attack in which the attacker only has access
to the ciphertext of a message?
Co-Prime - ANSWERS-a number that only shares the number 1 as a common
factor with another?
Differential cryptanalysis - ANSWERS-involves the examination of differences in
an input and how that affects the resultant difference in output
Mono-Alphabetic Ciphers - ANSWERS-Atbash - Scytale - ROT-13
Playfair - ANSWERS-Cipher makes use of a 5x5 table containing a keyword or key
phrase and encrypts pairs of letters or digraphs
Cryptosystem - ANSWERS-represents the entire cryptographic operation i.e. the
algorithm, key, and key management functions
Prime - ANSWERS-number whose factors are 1 and itself?
, Pseudo-random number generator - ANSWERS-a mechanism used to create
number streams with random properties. Examples include Lagged Fibonacci and
Mersenne Twister
Kerberos Ticket - ANSWERS-Used to authenticate. Contains the identity of the
client, the session key, timestamp, and checksum
Kerberos TGS - ANSWERS-Issues tickets
Kerberos KDC - ANSWERS-Server that provides the initial ticket
Kerberos TGT - ANSWERS-The ticket that is granted during the authentication
process
Kerberos AS - ANSWERS-Server that authorizes the principal and connects them
to the ticket granting server
DES - ANSWERS-64 Bit Block - 56 Bit Key - 16 Rounds
AES - ANSWERS-128 Bit Block - 128, 192, 256 Bit Key - 10, 12, 14 Rounds
