In ciphertext-only.
EXPLANATION: it is an attack model for cryptanalysis where the attacker is assumed to have access only to a set of ciphertexts. The attack is completely successful if the corresponding plaintexts can be extracted or, even better, the key.
A auto trans cooling system is the fan that is in the motor that is in the computer and when it gets hot then that can kicks on and cools it down.
No its actually used for looking up concerns, questions, or rumours
