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WorksheetsCryptography KS3
Total questions: 37
Worksheet time: 1hrs 20mins
How many different ways of setting up the machine was there said to be?
1000
1 Trillion
186 million million million
1 Million
What was the name of the man who led the team that cracked the German's "Enigma Code" in WW2?
Tim Berners-Lee
Alan Turing
Stephen Hawking
Bill Gates
Which of the following statements is INCORRECT?
Original methods of encryption (such as the Caesar Cipher) do not need the use of a key
Data can be encrypted using ciphers and decrypted using a key
Users cannot read or understand encrypted data without the use of a key
The Caesar Cipher is an example of a substitution cipher
What was the name of the man who led the team that cracked the German's "Enigma Code" in WW2?
Tim Berners-Lee
Alan Turing
Stephen Hawking
Bill Gates
In Cryptography, original message, before being transformed, is called
Simple Text
Plain Text
Cipher Text
Filled Text
An encryption algorithm transforms plain text into:
Cipher text
Simple Text
Empty Text
Plain Text
The process of converting a ciphertext into plaintext.
encryption
decryption
plaintext
cryptography
What is the name of the electro-mechanical device used by British cryptologists to help decipher German Enigma-machine-encrypted secret messages during WWII?
Bomba
Bomby
Bombe
Bomb
Which country do hieroglyphics come from?
Greece
Spain
South Africa
Egypt
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
Who invented the Enigma Cipher Machine?
The Americans
The British
The Germans
The Mexicans
What was the Enigma Cipher Machine used for?
To bake pancakes
To send secret messages
To iron clothes
To receive secret messages
Can you break this code?
Orange = 10
Orange = 6
Orange = 5
Orange = 2
What is the problem with the following plain text to encrypt with a Caesar Cipher?
Is your birthday 9/30/1998?
Numbers cannot be encrypted
It would be relatively easy to decipher after encryption
Symbols cannot be encrypted
all of the above
Consider the process of encoding and decoding a message using the following Caesar cipher encoding scheme in which the plaintext and ciphertext alphabets are offset by four positions, as shown below:
Plaintext: a b c d e f g h i j k l m n o p q r s t u v w x y z
Ciphertext: w x y z a b c d e f g h i j k l m n o p q r s t u v
Which of the following encoded ciphertext strings decodes to an original plaintext message of "secret"?
etsecr
wigvix
kwujwl
oaynap
What is the algorithm of ceasar's cipher?
Each letter is replaced with a particular symbol
Each letter is replaced with a letter a certain number of steps down the alphabet
Each letter is replaced with a particular number from 0 to 26, and numbers are replaced with letters.
What is the meaning of Greek words "crypt" or "cryph"
hidden
scary
away
off
What was the code name for Bletchley Park?
Station A
Bletch
Station Z
Station X
What was the name of the machine designed in Bletchley Park to break the enigma code?
Bomba
Bombe
Enigma
Prototype
What country first started working on decoding Enigma encoded messages?
Poland
France
Germany
Great Britain
What cipher system did the Germans use to transmit Enigma encoded messages?
Caesar Cipher
Morse code
Keypad Cipher
Telephone
What was the name of the place in the UK that worked on decoding Enigma messages?
Bletchley Park
Buckingham Palace
The Bombe
Turing Park
What symbols does the Morse Code cipher use?
Simple Alphabet
Dots and dashes
Squares and triangles
Numbers
