Information, Computer and Network Security Terms Glossary and
Dictionary
Chosen-Ciphertext Attack
A chosen ciphertext attack is an attack on a cryptosystem in which the cryptanalyst chooses ciphertext and causes it to be decrypted with an unknown key. For a self-synchronizing stream cipher, a chosen ciphertext attack can be useful as the key used to encipher each byte depends on the previous ciphertext. It is possible to use a chosen ciphertext attack to get an arbitrary message signed with RSA, if messages are signed without hashing.
Related Terms
Chosen-Ciphertext Attack
|
