IT3182 Cryptology and Network Security Midterm Exam

A company wants to ensure that only authorized users can access its internal communication. Which cryptographic objective does this scenario represent?

Alice sends Bob a message encrypted with Bob's public key. What type of encryption is used?

A hacker attempts to alter an online transaction. Which cryptographic property prevents this?

Which of the following encryption methods is considered insecure today?

Which algorithm is best suited for digital signatures due to its small key size and strong security?

A banking application needs encryption that balances security and performance. Which algorithm is the best choice?

The Caesar cipher is an example of which type of encryption?

Which modern encryption technique uses a pair of public and private keys?

If a cryptographic system allows a sender to prove they sent a message, which property is satisfied?

What is the primary weakness of MD5 as a cryptographic hash function?