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WorksheetsCryptography 1 (1.4.1-1.4.4)
Total questions: 20
Worksheet time: 3600secs
This type of encryption uses a single, pre-shared key to encrypt and decrypt data.
Asymmetric encryption
Symmetric encryption
Quantum encryption
Elliptical-curve encryption
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
The practice of hiding messages in an image or text is called...
a) Steganography
b) Bibliography
c) Photography
d) Chirography
In __________ cryptography, a different key is used to encrypt the message than is used to decrypt the message.
Asymmetric
Symmetric
Forward
Backward
Using the __________ cipher, you choose some number by which to shift each letter of a text.
Multi-alphabet substitution
Caesar
Atbash
Rail fence
What defines key length in cryptography?
The physical size of the encryption key
The time required to generate a key
The number of bits in the key
The complexity of the algorithm
Which statement about private keys is correct?
They should be publicly shared
They must be kept secret
They are used for encryption only
They are generated randomly each use
What is the purpose of data encryption?
To speed up data transfer
To make data unreadable to unauthorized users
To increase data storage capacity
To make data deletion easier
What kind of cipher is this an example of?
Enhanced Caesar
AES
Rail Fence
Pigpen
Why can't passwords be reversed once they are hashed?
Hashing is a one-way function
They are encrypted with a reversible algorithm
They are stored in plain text
They are encoded with a reversible code
What is obfuscation?
A process of compressing data
A process of making something easier to understand
A process of making something more difficult to understand
A process of encrypting data
What is steganography?
A process of hiding information within a text document
A process of encrypting audio files
A process of hiding information within an image
A process of compressing video files
What is the term for replacing sensitive data with a token?
Encryption
Steganography
Obfuscation
Tokenization
What is the purpose of data masking?
To hide parts of the original number
To compress audio files
To replace sensitive data with a token
To hide data within an image
What is the term for the process of reversing the obfuscation to gain access to the original data?
Decryption
Tokenization
Reversal
Deobfuscation
What is the term for hiding parts of the original number and only showing a portion of that number?
Obfuscation
Data masking
Tokenization
Steganography
