Intro To Cryptography d334 EXAM Questions AND Correct Answers

Intro To Cryptography d334 EXAM Questions AND Correct Answers

Bifid - ✔✔ Makes use of a grid and which maps the letters into numeric
values.


Block size of 3DES(Symmetric)? - ✔✔ 64 bits


Block size of AES(Symmetric)? - ✔✔ 128 bits


Block size of BlowFish(Symmetric)? - ✔✔ 64 bit


Block size of Camellia(Symmetric)? - ✔✔ 128 bit


Block size of DES(Symmetric)? - ✔✔ 64 bits


Block size of IDEA(Symmetric)? - ✔✔ 64 bits


Block size of RC2(Symmetric)? - ✔✔ 64 bits


Block size of RC5(Symmetric)? - ✔✔ 32, 64, or 128 bits


Block size of RC6(Symmetric)? - ✔✔ Variable, but a common size is 128 bits


Block size of SkipJack(Symmetric)? - ✔✔ 64 bits


Block size of TwoFish(Symmetric)? - ✔✔ 128 bits

, Block size of XTEA(Symmetric)? - ✔✔ 64 bits


Caesar Cipher - ✔✔ Mono-alphabetic substitution cipher known as "shift"
cipher. Involves plaintext being replaced by a letter some fixed number of
positions down the alphabet. i.e., a Caesar Cipher using a shift of +3 would
mean a plaintext letter A would result in a ciphertext letter D (a shift of three
positions to the right in the alphabet).


Certificate cancellation - ✔✔ This includes certificate expiration, certificate
revocation, key history and key archiving


Certificate Initialization - ✔✔ This includes registration, key pair generation,
certificate creation and certificate/key distribution, certificate dissemination,
and key backup


Certificate Issued - ✔✔ This includes certificate retrieval, certificate
validation, key recovery and key update


Cipher type of WEP - ✔✔ WEP uses a symmetric stream cipher


Cipher type of WPA - ✔✔ WPA uses a symmetric stream cipher


Cipher type of WPA-2 - ✔✔ WPA-2 uses a symmetric block cipher


Combination - ✔✔ Not concerned with the order


Encryption method of WPA - ✔✔ WPA uses TKIP + RC4