What is the purpose of encryption?

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Multiple Choice

What is the purpose of encryption?

Explanation:
Encryption hides the content of a message by turning readable data (plaintext) into unreadable ciphertext using an algorithm and a key. The main goal is to keep information private so that only someone with the correct key can recover the original data. This protects confidentiality during storage or transmission, preventing unauthorized listeners from understanding the message. It’s not intended to increase network speed; encryption adds some processing overhead. It also doesn’t by itself verify that data hasn’t been altered—that role belongs to integrity checks like hashes or digital signatures (though some schemes combine both in authenticated encryption).

Encryption hides the content of a message by turning readable data (plaintext) into unreadable ciphertext using an algorithm and a key. The main goal is to keep information private so that only someone with the correct key can recover the original data. This protects confidentiality during storage or transmission, preventing unauthorized listeners from understanding the message. It’s not intended to increase network speed; encryption adds some processing overhead. It also doesn’t by itself verify that data hasn’t been altered—that role belongs to integrity checks like hashes or digital signatures (though some schemes combine both in authenticated encryption).

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