Using different keys for different blocks improves security because if an attacker cracks one key, they can only decrypt that specific block. The rest of the message remains encrypted, forcing the attacker to test multiple keys for each block separately.
Conditions: The cipher is a block cipher where each block uses a different key.; The attacker attempts to decrypt the message by guessing keys.
Using different keys for different blocks improves security because if an attacker cracks one key, they can only decrypt that specific block. The rest of the message remains encrypted, forcing the attacker to test multiple keys for each block separately.
Conditions: The cipher is a block cipher where each block uses a different key.; The attacker attempts to decrypt the message by guessing keys.