CISSP Information Systems Security

Answer: D - Calligraphy is not related to encryption. Encryption is a method of transforming readable data into non-readable data. The readable data is called plaintext and is transformed into ciphertext, which appears to be random and unreadable. Plaintext is in a form that can be understood either by a person or by a computer. Once it is transformed into ciphertext, neither human nor machine can properly process it until it is decrypted. This enables the transmission of confidential information over insecure channels without unauthorized disclosure. A system or product that provides encryption and decryption is referred to as a cryptosystem and can be created through hardware components or program code in an application. The cryptosystem uses an encryption algorithm, keys, and the necessary software components and protocols.