Advanced Placement (AP) Computer Science

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Which principle of Encryption involves verifying the original author of the message?

  1. Integrity

  2. Non-repudiation

  3. Authentication

  4. Encryption

The correct answer is: Authentication

The principle that involves verifying the original author of a message is authentication. Authentication ensures that the sender of the message is who they claim to be, which is essential in establishing trust in the communication process. This is often achieved through the use of digital signatures or other cryptographic techniques that confirm the identity of the sender, allowing the receiver to be confident that the information came from a legitimate source. Understanding this principle is crucial in various applications, such as secure online transactions or communications, where verifying the sender's identity is key to preventing fraud and ensuring the integrity of the information being exchanged.

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