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Questions and Answers
What operation is used to combine the plaintext with the key stream in RC4 encryption?
What operation is used to combine the plaintext with the key stream in RC4 encryption?
- Multiplication
- Addition
- Bitwise Exclusive OR (correct)
- Bitwise AND
Why is RC4 known to be a symmetric operation for decryption?
Why is RC4 known to be a symmetric operation for decryption?
- Because it uses bit-wise exclusive OR operation (correct)
- Due to its use of asymmetric keys
- By employing multiplication as its decryption technique
- It uses a different algorithm for encryption and decryption
What does the Key-Scheduling Algorithm (KSA) do in RC4 encryption?
What does the Key-Scheduling Algorithm (KSA) do in RC4 encryption?
- Creates the key stream using a variable-length key
- Generates the secret key
- Permutates each of the 256 available bytes (correct)
- Uses asymmetric keys for encryption
Why has there been a call to stop using RC4 encryption algorithms?
Why has there been a call to stop using RC4 encryption algorithms?
What is the main advantage of using RC4 stream ciphers?
What is the main advantage of using RC4 stream ciphers?
Which organization banned the usage of RC4 in TLS protocols in 2015?
Which organization banned the usage of RC4 in TLS protocols in 2015?
What is a drawback identified in using RC4 stream ciphers?
What is a drawback identified in using RC4 stream ciphers?
What does RC4A+ offer as an improvement over basic RC4?
What does RC4A+ offer as an improvement over basic RC4?
What type of operation is used in RC4 encryption to combine the plaintext with the key stream?
What type of operation is used in RC4 encryption to combine the plaintext with the key stream?
What was urged by major software companies like Microsoft and Mozilla due to threat vulnerabilities associated with RC4?
What was urged by major software companies like Microsoft and Mozilla due to threat vulnerabilities associated with RC4?
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