This page uses content from Wikipedia and is licensed under CC BY-SA.
A key-recovery attack is an adversary's attempt to recover the cryptographic key of an encryption scheme.:52 Historically, cryptanalysis of block ciphers has focused on key-recovery, but security against these sorts of attacks is a very weak guarantee since it may not be necessary to recover the key to obtain partial information about the message or decrypt message entirely.:52 Modern cryptography uses more robust notions of security. Recently, indistinguishability under adaptive chosen-ciphertext attack (IND-CCA2 security) has become the "golden standard" of security.:566 The most obvious key-recovery attack is the exhaustive key-search attack. But modern ciphers often have a key space of size or greater, making such attacks infeasible with current technology.
|This cryptography-related article is a stub. You can help Wikipedia by expanding it.|