Cryptography

What is the process of turning ciphertext back into plaintext using a key?

• Decryption
• Encryption
• Hashing
• Authentication

What is the primary purpose of hashing functions in cryptography?

• To encrypt data
• To ensure data integrity
• To exchange keys securely
• To authenticate users

Which encryption method uses a pair of keys, one public and one private, to secure data?

• Symmetric encryption
• One-time pad encryption
• Asymmetric encryption
• Two-key encryption

Encryption transforms readable data, known as (a)   , into an unreadable format called ciphertext.

In an asymmetric communication between 6 people, how many keys do you need to communicate

(a)  

In a private key cryptographic communication, how many keys do you need to communicate between 2 people

(a)  

What is the term for the process of transforming plaintext into ciphertext using a cryptographic algorithm?

• Decryption
• Hashing
• Encryption
• Authentication

What cryptographic technique guarantees that the information hasn't been altered or modified in transit or storage?

• Confidentiality
• Hashing
• Symmetric encryption
• Asymmetric encryption

In the context of asymmetric encryption, what is a public key used for?

• Decryption only
• Encryption only
• Both encryption and decryption
• Neither encryption nor decryption

Which of the following is true about symmetric encryption?

• It uses different keys for encryption and decryption.
• It is primarily used for data in transit.
• Both parties use the same key for encryption and decryption.
• It is more suitable for scenarios where key distribution is not an issue.