Ciphertext refers to the encrypted form of data or message that has undergone a process of encryption. It is the result of applying an encryption algorithm and a specific encryption key to the original plaintext to transform it into a form that is not easily readable or understandable without the corresponding decryption key.
Ciphertext is designed to be unintelligible and appear as random data, making it difficult for unauthorized individuals to comprehend the original message without the decryption process. The security of a cryptographic system relies on the fact that even if an attacker intercepts the ciphertext, they should not be able to derive the original plaintext without knowledge of the decryption key.
Ciphertext plays a crucial role in ensuring the confidentiality and security of sensitive information during transmission or storage. Only authorized parties possessing the correct decryption key can revert the ciphertext back to its original plaintext form.