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WorksheetsINS Class Activity -1
Total questions: 35
Worksheet time: 36mins
Who was the first known 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 art and science of breaking the cipher text is known as
Cryptanalysis
Cryptography
Staganography
Watermarking
A method for determining a solution to a problem by sequentially testing all possible solutions.
brute force
relative frequency
cipher
paired keys
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
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 country do hieroglyphics come from?
Greece
Spain
South Africa
Egypt
In Cryptography, original message, before being transformed, is called
Simple Text
Plain Text
Cipher Text
Filled Text
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
_______ 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
Authentication
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
Which of the following is an example of a Cryptographic Hash Function Algorithm?
ECB
CBC
OFB
SHA-256
Digital Signatures are:
Proof of authenticity of the sender
Proof of authenticity of the receiver
Proof of authenticity of the verifier
Proof of authenticity of Alice
