Cryptographic System Services for Local Network Privacy

D.

The confidentiality service of a cryptographic system ensures that information will not be disclosed to any unauthorized person on a local network.

The cryptographic system service that ensures that information will not be disclosed to any unauthorized person on a local network is Confidentiality.

Confidentiality is a fundamental aspect of information security that protects the secrecy of information. It refers to the process of converting plain text into an unreadable format using a cryptographic algorithm. The unreadable format is referred to as cipher text, and the algorithm used to convert the plain text into the cipher text is referred to as an encryption algorithm.

The encryption process is typically done using a secret key that is known only to the sender and the intended receiver. This ensures that even if the encrypted message is intercepted by an unauthorized person, they will not be able to read it without the key.

Confidentiality is critical for protecting sensitive information such as financial data, personal information, trade secrets, and other proprietary information. It is achieved by using encryption and other cryptographic techniques to ensure that information is kept confidential and not disclosed to unauthorized persons.

Authentication, integrity, and non-repudiation are also important cryptographic system services, but they do not provide the same level of protection as confidentiality. Authentication ensures that the person or system accessing the information is who they claim to be, while integrity ensures that the information has not been tampered with or altered. Non-repudiation ensures that a sender cannot deny sending a message.

In summary, confidentiality is the cryptographic system service that ensures that information will not be disclosed to any unauthorized person on a local network.