8 Questions
What is public-key encryption?
Public-key encryption is a technique that uses a pair of keys, a public key for encryption and a private key for decryption, to securely transmit data.
Why is public-key encryption considered more secure from cryptanalysis than symmetric encryption?
Public-key encryption is considered more secure because it uses different keys for encryption and decryption, making it more difficult for attackers to decipher the encrypted data.
What is the advantage of using public-key encryption in terms of key distribution?
The advantage of using public-key encryption is that key distribution is easier compared to symmetric encryption, as there is no need for a complex handshaking process with key distribution centers.
What are the two requirements for conventional encryption to work?
The same algorithm with the same key is used for encryption and decryption. The sender and receiver must share the algorithm and the key.
What are the three requirements for security in conventional encryption?
The key must be kept secret. It must be impossible or at least impractical to decipher a message if the key is kept secret. Knowledge of the algorithm plus samples of ciphertext must be insufficient to determine the key.
What are the two requirements for public-key encryption to work?
One algorithm is used for encryption and a related algorithm for decryption with a pair of keys, one for encryption and one for decryption. The sender and receiver must each have one of the matched pair of keys (not the same one).
What are the two requirements for security in public-key encryption?
One of the two keys must be kept secret. It must be impossible or at least impractical to decipher a message if one of the keys is kept secret. Knowledge of the algorithm plus one of the keys plus samples of ciphertext must be insufficient.
What is the main advantage of public-key encryption compared to conventional encryption?
In public-key encryption, the sender and receiver do not need to share the same key, making key distribution easier.
Take the quiz to test your knowledge about public-key encryption and its advantages over symmetric encryption. Explore the security benefits and ease of key distribution in public-key encryption compared to traditional symmetric encryption methods.
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