AP Computer Science Practice Test 2025 – Complete Exam Prep

Question: 1 / 400

What does the term ciphertext refer to?

The decoded version of a message

The original readable message

The encrypted version of a message

The term ciphertext specifically refers to the version of a message that has been transformed through encryption. This transformation makes the original plaintext message unreadable without a specific decryption key or method. Ciphertext results from applying an encryption algorithm to the plaintext, ensuring that unauthorized parties cannot easily interpret the information contained within.

Understanding this concept is crucial for recognizing how secure communications are established and maintained. In cybersecurity and data protection, distinguishing between plaintext (readable message) and ciphertext (encrypted message) is fundamental to ensuring that sensitive information remains confidential.

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Any message written in plain text

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