chosen-ciphertext attack

chosen-ciphertext attack

English

Noun

chosen-ciphertext attack (plural chosen-ciphertext attacks)

1. (cryptography) An attack on a cryptosystem that relies on the attacker's ability to choose any ciphertext of their liking and decrypt it into the corresponding plaintext with that system and key. More powerful than a chosen-plaintext attack.

   The ElGamal encryption system is resistant against chosen-plaintext attacks, but not against chosen-ciphertext attacks.

Synonyms

• CCA (initialism)

Coordinate terms

• ciphertext-only attack, known-plaintext attack, chosen-plaintext attack

Translations

cryptanalytic attack

Finnish: valittuun salatekstiin perustuva hyökkäys