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WorksheetsCryptography
Total questions: 13
Worksheet time: 3hrs 15mins
Who was the first know user of the Caesar Cipher?
Caesar Romanus
Julius Caesar
Alan Turing
There isn't one
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
_______ 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
A(n) ______ algorithm transforms cipher text to plain text.
Encryption
Decryption
The _______ is a number or a set of numbers on which the cipher operates.
secret
cipher
key
none of the mentioned
What encryption algorithm uses the same pre-shared key to encrypt and decrypt data?
hash
one-time pad
symmetric
asymmetric
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
"letters" has been encrypted with Caesar cipher to "cvkkvij". The key used was:
16
14
18
17
"PLAINTEXT" has been encrypted with Caesar cipher to "AWLTYEPIE". The key used was:
16
12
11
19
"CIPHERTEXT" has been encrypted with Caesar cipher to "EKRJGTVGZV". The key used was:
7
6
3
2
"CAESAR CIPHER" has been encrypted with Caesar cipher to "SQUIQH SYFXUH". The key used was:
16
14
13
12
