Cryptography Quiz

What is the process of converting plaintext into ciphertext called?

• Decryption

• Encryption

• Encoding

• Hashing

What is steganography?

• The practice of disguising ciphertext to prevent unauthorized access

• The practice of embedding secret information within a carrier medium

• The process of securely deleting sensitive information

• The process of decrypting messages without a key

In symmetric key cryptography, how many keys are used for both encryption and decryption?

• Two keys

• Three keys

• One key

• Four keys

Who is credited with inventing the RSA algorithm, one of the first practical public-key cryptosystems?

• Ron Rivest, Adi Shamir, and Leonard Adleman

• Diffie and Hellman

• Whitfield Diffie

• Martin Hellman

What is the term for a cryptographic hash function that maps data of arbitrary size to a fixed-size hash value?

• Key derivation function

• Message authentication code

• Hash function

• Digital signature

Which cryptographic algorithm is widely used for secure data transmission over the Internet, providing encryption, authentication, and integrity?

• RSA

• DES

• AES

• MD5

Which famous cipher, developed by Julius Caesar, involves shifting each letter in the plaintext by a fixed number of positions down the alphabet?

• Vigenère cipher

• Atbash cipher

• Caesar cipher

• Playfair cipher

Which cryptographic protocol is used to secure communication over a computer network, providing secure channels between two devices for data transmission?

• SSH

• HTTP

• SSL/TLS

• FTP

What type of cryptography involves the use of two keys, a public key for encryption and a private key for decryption?

• Symmetric cryptography

• Asymmetric cryptography

• Hash-based cryptography

• Diffie-Hellman cryptography

In the Diffie-Hellman key exchange protocol, what do two parties exchange to establish a shared secret over an insecure channel?

• Private keys

• Symmetric keys

• Public keys

• Hash values