WorksheetsQuiz on Security
Total questions: 45
Worksheet time: 39mins
To encrypt a message you need 2 main parts, a _________ & a key
cipher
code
algorithm
crypt
In Cryptography, original message, before being transformed, is called
Simple Text
Plain Text
Cipher Text
Filled Text
In Cryptography, original message, before being transformed, is called
Simple Text
Plain Text
Cipher Text
Filled Text
_______ is the science and art of transforming messages to make them secure and immune to attacks.
Cryptography
Cryptoanalysis
neither Cryptography nor Cryptoanalysis
either Cryptography or Cryptoanalysis
_______ is the science and art of transforming messages to make them secure and immune to attacks.
Cryptography
Cryptoanalysis
neither Cryptography nor Cryptoanalysis
either Cryptography or Cryptoanalysis
An encryption algorithm transforms plain text into:
Cipher text
Simple Text
Empty Text
Plain Text
A(n) ______ algorithm transforms cipher text to plain text.
Encryption
Decryption
A cipher is _________________________.
a person who makes up secret codes
an algorithm that is used to scramble text so that it can be passed in secret
a lock that can be used to lock a message in a lock box
any puzzle, such as a crossword or Sudoku puzzle
Plaintext
original message
coded message
algorithm for transforming plaintext to ciphertext
info used in cipher known only to sender/receiver
ciphertext
•field of both cryptography and cryptanalysis
•study of encryption principles/methods
•converting plaintext to ciphertext
•coded message
key
algorithm for transforming plaintext to ciphertext
info used in cipher known only to sender/receiver
•recovering ciphertext from plaintext
•converting plaintext to ciphertext
encipher
converting plaintext to ciphertext
coded message
•study of principles/methods of deciphering ciphertext without knowing key
study of encryption principles/methods
Confidentiality
Ensure message remains secret during transmission between parties
Ensure message is not altered while in transit between communicating partners
Verifies sender is who she says she is
Proves that nobody but on sender could have sent a particular message
Integrity
Ensure message remains secret during transmission between parties
Ensure message is not altered while in transit between communicating partners
Verifies sender is who she says she is
Proves that nobody but on sender could have sent a particular message
Non-repudiation
Ensure message remains secret during transmission between parties
Ensure message is not altered while in transit between communicating partners
Verifies sender is who she says she is
Proves that nobody but on sender could have sent a particular message
It is also called as private key cryptography.
Symmetric Cryptography
Asymmetric Cryptography
Decryption Key
Hashing
One key is used for data encryption and another for data decryption.
Symmetric Cryptography
Asymmetric Cryptography
Asymmetric Key
Hashing
It is used to determine whether a message actually came from the sender that is expected and whether the message hasn't tampered with.
Hash
Key
Tag
Plaint Text
Which of the following is an example of a Cryptographic Hash Function Algorithm?
ECB
CBC
OFB
SHA-256
Which of the following is an example of a Cryptographic Hash Function Algorithm?
ECB
CBC
OFB
SHA-256
a secret or disguised way of writing; a code.
cipher
decrypt
Vigenere
to decode or decipher.
cipher
enigma machine
brute force
decrypt
convert (information or data) into a cipher or code, especially to prevent unauthorized access.
Vigenere
Turing
decipher
encrypt
a type of substitution cipher in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet. For example, with a left shift of 3, D would be replaced by A, E would become B, and so on. The method is named after Julius Caesar, who used it in his private correspondence.[1]
Vigenere
Caesar Cipher
CRIBS
cryptography
To encrypt a message you need 2 main parts, a _________ & a key
cipher
code
algorithm
crypt
What does the word cryptography mean?
The art of cooking or baking secret codes
The art of writing or solving secret codes
The art of drawing or painting secret codes
The art of throwing or catching secret codes
CIA Stands for
Confidentiality , Integrity, Authenticity
Confidentiality , Integrity, Availability
Confidentiality , Interruption, Authenticity
Confidentiality , Integrity, Accountability
--------------------- is that compromise the security of information owned by an organisation.
Security Mechanism
Security Services
Security Attacks
What is the term used to describe the science of making and breaking secret codes?
cryptology
impersonation
spoofing
factorization
jamming
Which type of cipher is able to encrypt a fixed-length block of plaintext into a 128-bit block of ciphertext at any one time?
hash
symmetric
block
stream
transform
What type of cipher encrypts plaintext one byte or one bit at a time?
block
enigma
hash
elliptical
stream
Which 128-bit block cipher encryption algorithm does the US government use to protect classified information?
Skipjack
3DES
Caesar
AES
Vignere
What encryption algorithm uses one key to encrypt data and a different key to decrypt data?
symmetric
transposition
one-time pad
asymmetric
Encrypted text that will appear to be a random string.
Encryption
Plaintext
Ciphertext
It is a value that is known to the sender.
Decryption Key
Encryption Key
PKI
The original message in its original legible form.
Ciphertext
Plaintext
Text Message
One key is used for data encryption and another for data decryption.
Symmetric Cryptosystem
Asymmetric Cryptosystem
Asymmetric Key
DES stands for?
(a)
What does AES stands for?
(a)
The two methods of encrypting data are?
Substitution and transposition
Block and stream
Symmetric and asymmetric
DES and AES
Cryptography supports all of the core principles of information security except
Availability
Confidentiality
Integrity
Authenticity
What alternative term can be used to describe asymmetric cryptographic algorithms?
public key cryptography
user key cryptography
private key cryptography
cipher-text cryptography
This method of encryption is the replacement of an item with a different item.
Transposition
Confusion
Substitution
Diffusion
