WorksheetsCryptography
Total questions: 17
Worksheet time: 10mins
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
Who was the first known user of the Caesar Cipher?
Caesar Romanus
Julius Caesar
Alan Turing
There isn't one
In Cryptography, the 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
Encrypt the word alphabet using a Caesar cipher with a shift of 3
DVSDULQV
DOOFOHDU
DOSKDEHW
DORQHBHV
The process of converting a ciphertext into plaintext.
encryption
decryption
plaintext
cryptography
The following word was encrypted using a Caesar cipher with a shift of 2: ecguct. What word is it?
julius
caesar
romans
cipher
A method for determining a solution to a problem by sequentially testing all possible solutions.
brute force
relative frequency
cipher
paired keys
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
It is also called as private key cryptography.
Symmetric Cryptography
Asymmetric Cryptography
Decryption Key
Hashing
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
