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Question 6/66
Which of the following algorithms uses three different keys to encrypt the plain text?
Correct Answer: D
3DES
https://en.wikipedia.org/wiki/Triple_DES
Triple DES (3DES) has a three different keys with same size (56-bit).
Incorrect answers:
AES. For AES, NIST selected three members of the Rijndael family, each with a block size of 128 bits, but three different key lengths: 128, 192 and 256 bits.
Blowfish. Blowfish has a 64-bit block size and a variable key length from 32 bits up to 448 bits.
Skipjack. Skipjack uses an 80-bit key to encrypt or decrypt 64-bit data blocks.
https://en.wikipedia.org/wiki/Triple_DES
Triple DES (3DES) has a three different keys with same size (56-bit).
Incorrect answers:
AES. For AES, NIST selected three members of the Rijndael family, each with a block size of 128 bits, but three different key lengths: 128, 192 and 256 bits.
Blowfish. Blowfish has a 64-bit block size and a variable key length from 32 bits up to 448 bits.
Skipjack. Skipjack uses an 80-bit key to encrypt or decrypt 64-bit data blocks.
- Question List (66q)
- Question 1: John is going to use RSA to encrypt a message to Joan. What ...
- Question 2: Bob's password is hashed, and so is John's. Even though they...
- Question 3: John is trying to explain the basics of cryptography to a gr...
- Question 4: If Bob is using asymmetric cryptography and wants to send a ...
- Question 5: Collision resistance is an important property for any hashin...
- Question 6: Which of the following algorithms uses three different keys ...
- Question 7: What is an IV?
- Question 8: Network of trusted certificate authority servers. Use asymme...
- Question 9: Original, unencrypted information is referred to as ____....
- Question 10: A disk you rotated to encrypt/decrypt. Created by Leon Alber...
- Question 11: Ferris has been assigned the task of selecting security for ...
- Question 12: With Cipher-block chaining (CBC) what happens?...
- 1 commentQuestion 13: You are explaining basic mathematics to beginning cryptograp...
- Question 14: This algorithm was published by the German engineering firm ...
- Question 15: Which of the following is a protocol for exchanging keys?...
- Question 16: Hash. Created by Ronald Rivest. Replaced MD4. 128 bit output...
- Question 17: What is Kerchoff's principle?
- Question 18: Which one of the following are characteristics of a hash fun...
- Question 19: In IPSec, if the VPN is a gateway-gateway or a host-gateway,...
- Question 20: Which of the following is generally true about key sizes?...
- Question 21: A type of frequency analysis used to attack polyalphabetic s...
- Question 22: Developed by Netscape and has been replaced by TLS. It was t...
- Question 23: In 2007, this wireless security algorithm was rendered usele...
- Question 24: Which of the following is an asymmetric cipher?...
- Question 25: Which one of the following is a symmetric key system using 6...
- Question 26: A linear congruential generator is an example of what?...
- Question 27: Fred is using an operating system that stores all passwords ...
- Question 28: Which of the following asymmetric algorithms is described by...
- Question 29: With Cipher feedback (CFB) what happens?...
- Question 30: You are trying to find a modern method for security web traf...
- Question 31: Part of understanding cryptography is understanding the cryp...
- Question 32: Encryption of the same plain text with the same key results ...
- Question 33: Which one of the following uses three different keys, all of...
- Question 34: John is responsible for VPNs at his company. He is using IPS...
- Question 35: During the process of encryption and decryption, what keys a...
- Question 36: A measure of the uncertainty associated with a random variab...
- Question 37: Which of the following would be the weakest encryption algor...
- Question 38: Which of the following equations is related to EC?...
- Question 39: Which one of the following is an authentication method that ...
- Question 40: A symmetric Stream Cipher published by the German engineerin...
- Question 41: Which of the following is a cryptographic protocol that allo...
- Question 42: In relationship to hashing, the term _____refers to random b...
- Question 43: Manipulating individuals so that they will divulge confident...
- Question 44: Denis is looking at an older system that uses DES encryption...
- Question 45: When learning algorithms, such as RSA, it is important to un...
- Question 46: Which of the following is required for a hash?...
- Question 47: Which of the following is a fundamental principle of cryptog...
- Question 48: Protocol suite provides a method of setting up a secure chan...
- Question 49: Software for maintaining an on-the-fly-encrypted volume. Dat...
- Question 50: In 1977 researchers and MIT described what asymmetric algori...
- Question 51: Changing some part of the plain text for some matching part ...
- Question 52: The most widely used asymmetric encryption algorithm is what...
- Question 53: MD5 can best be described as which one of the following?...
- Question 54: Hash algortihm created by the Russians. Produces a fixed len...
- Question 55: What size block does FORK256 use?...
- Question 56: What is the basis for the difficulty in breaking RSA?...
- Question 57: What is the formula m^e %n related to?...
- Question 58: RFC 1321 describes what hash?
- Question 59: Which of the following is a substitution cipher used by anci...
- Question 60: What is the name of the attack where the attacker obtains th...
- Question 61: What is a "Collision attack" in cryptography?...
- Question 62: A number that is used only one time, then discarded is calle...
- Question 63: A cryptographic hash function which uses a Merkle tree-like ...
- Question 64: Which of the following Secure Hashing Algorithm (SHA) produc...
- Question 65: Which of the following techniques is used (other than brute ...
- Question 66: With Electronic codebook (ECB) what happens:...
