Explain encryption.

Explain encryption.

• A. Encryption converts ciphertext into plaintext.
• B. Encryption uses public networks to secure data.
• C. Encryption transforms ciphertext into plaintext.
• D. Encryption uses keys and algorithms to transform readable data into unreadable form.

Answer: (D)

Encryption is the process of turning readable data (plaintext) into unreadable data (ciphertext) using a specific algorithm and a key, so that only someone with the correct key can recover the original information. The key idea is the transformation of data into a scrambled form that protects confidentiality. There are two main types: symmetric encryption, where the same key locks and unlocks the data, and asymmetric encryption, which uses a public key to encrypt and a private key to decrypt. This helps explain why the correct description focuses on using keys and algorithms to transform readable data into an unreadable form. The other statements describe decryption (converting ciphertext back to plaintext) or focus on networks rather than the encryption process itself, which is why they don’t fit as definitions of encryption.

Encryption is the process of turning readable data (plaintext) into unreadable data (ciphertext) using a specific algorithm and a key, so that only someone with the correct key can recover the original information. The key idea is the transformation of data into a scrambled form that protects confidentiality. There are two main types: symmetric encryption, where the same key locks and unlocks the data, and asymmetric encryption, which uses a public key to encrypt and a private key to decrypt. This helps explain why the correct description focuses on using keys and algorithms to transform readable data into an unreadable form. The other statements describe decryption (converting ciphertext back to plaintext) or focus on networks rather than the encryption process itself, which is why they don’t fit as definitions of encryption.