Symmetric Cryptography Quiz Form
Please answer all questions below to test your knowledge of symmetric cryptography. All questions are required.
What is the primary characteristic that distinguishes symmetric cryptography from asymmetric cryptography?
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Which of the following is a widely used symmetric encryption algorithm?
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AES
RSA
ECC
Diffie-Hellman
Select all block cipher algorithms from the list below.
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DES
RC4
Blowfish
IDEA
In symmetric cryptography, what must both parties possess to encrypt and decrypt messages?
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A shared secret key
A pair of public and private keys
A digital certificate
A hash function
Name one mode of operation used with block ciphers.
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Which of the following are stream ciphers?
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RC4
AES
Salsa20
Triple DES
What is a major disadvantage of symmetric cryptography compared to asymmetric cryptography?
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Which of the following best describes the Electronic Codebook (ECB) mode?
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Each plaintext block is encrypted independently
Blocks are chained together for encryption
A unique key is used for each block
ECB is only used with stream ciphers
Select all correct statements about key management in symmetric cryptography.
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Keys must be kept secret from unauthorized parties
Keys can be publicly distributed
Key distribution can be challenging for large groups
Keys must be changed regularly to maintain security
Briefly explain the difference between block ciphers and stream ciphers.
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