Which of the following best describes the process of encrypting and decrypting data using an asymmetric encryption algorithm?
a. Only the public key is used to encrypt, and only the private key is used to decrypt.
b. The public key is used to either encrypt or decrypt.
c. Only the private key is used to encrypt, and only the public key is used to decrypt.
d. The private key is used to decrypt data encrypted with the public key.
Answer: D
When encrypting and decrypting data using an asymmetric encryption algorithm, you use only the private key to decrypt data encrypted with the public key. Answers A and B are both incorrect because in public key encryption, if one key is used to encrypt, you can use the other to decrypt the data. Answer C is incorrect because the public key is not used to decrypt the same data it encrypted.
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Cryptography Basics
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