What does integrity of a message imply in information security?

• A. The message can be compressed effectively
• B. The message remains unchanged and authentic
• C. The message is encrypted properly
• D. The message contains no errors

Answer: (B)

Integrity of a message in information security refers to the assurance that the message remains unchanged and authentic during its transmission and storage. This means that the content of the message has not been altered or tampered with by unauthorized individuals, ensuring that the recipient can trust the information they receive.

Maintaining message integrity is essential for securing communications and preventing data breaches or misinformation. Techniques such as checksums, digital signatures, and hash functions are commonly employed to verify that a message has not been modified. If the message integrity is intact, the recipient can be confident that the data is exactly as it was sent, thus maintaining trust in the communication process.

In contrast, other options may touch on aspects related to message handling, but they do not capture the essence of integrity. For instance, effective compression, proper encryption, or error-free content are significant attributes for various purposes but do not specifically address the concept of integrity in the context of information security.