Symmetric encryption (AES, DES) in Computer Networks - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the sentence to define symmetric encryption.

Computer Networks

Symmetric encryption uses the same [1] for both encryption and decryption.

Drag options to blanks, or click blank then click option'

Akey

Balgorithm

Chash

Dprotocol

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing the key with the encryption algorithm.

Thinking the protocol is the secret used for encryption.

Symmetric encryption uses the same key to encrypt and decrypt data, making it fast and efficient.

2fill in blank

medium

Complete the sentence to identify a popular symmetric encryption algorithm.

Computer Networks

One widely used symmetric encryption algorithm is [1].

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ARSA

BTLS

CSHA-256

DAES

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing RSA, which is asymmetric encryption.

Confusing encryption algorithms with hashing functions like SHA-256.

AES (Advanced Encryption Standard) is a popular symmetric encryption algorithm used worldwide.

3fill in blank

hard

Fix the error in the statement about DES encryption.

Computer Networks

DES uses a [1]-bit key for encryption.

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A128

B56

C64

D256

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 64 bits, which is the block size, not the key size.

Thinking DES uses a 128-bit or 256-bit key like AES.

DES (Data Encryption Standard) uses a 56-bit key for encryption, which is now considered weak.

4fill in blank

hard

Fill both blanks to complete the description of symmetric encryption.

Computer Networks

Symmetric encryption is generally [1] than asymmetric encryption but requires secure [2] distribution.

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Afaster

Bkey

Cslower

Dalgorithm

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the words 'faster' and 'slower'.

Confusing 'key' with 'algorithm' for what needs secure distribution.

Symmetric encryption is faster than asymmetric encryption but requires secure key distribution to keep the secret safe.

5fill in blank

hard

Fill both blanks to complete the dictionary comprehension describing key lengths.

Computer Networks

key_lengths = {: {BLANK_2}} for {{BLANK_2}} in ['AES', 'DES']

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A{

B'AES'

C'DES'

D}

Attempts:

3 left

💡 Hint

Common Mistakes

Using closing brace '}' at the start.

Confusing the algorithm names or missing braces.

This dictionary comprehension creates a dictionary with keys 'AES' and 'DES' representing encryption algorithms.