Computer Security MT24, Asymmetric key ciphers


Flashcards

@Define intuitively a trapdoor function.

A function that is easy to perform and difficult to invert, but easy to invert given some extra information.

What is the difference between the public key and the private key?

  • Public key: Published publicly, used for encryption
  • Private key: Kept secret, used for decryption

Why is a chosen plaintext attack always possible against an asymmetric key cipher?

An attacker can use the public key to encrypt as many plaintexts as they want.